[Boutique] Measurement Internship Report

This catalogue 1 measurement internship report 2 measurement internship report 3 measurement internship report part 1: measurement internship report

An experimental purpose

Proficiency in the use of the instrument, master the observation and calculation of the leveling measurement of the wire control network.

Practice reading the scale reading with the telescope line of sight to calculate the line of sight. Master the operation, recording and calculation methods of the horizontal angle measurement. Practice the protractor with the theodolite method to map the topographic map. Learn to measure the magnetic azimuth of a line with a compass. Master the general method of measuring the distance between steel bars.

Second experimental requirements

Surveying is a comprehensive discipline. Measuring internship plays an important role in cultivating students' thinking and hands-on ability and mastering specific work programs and content.

During the internship, pay attention to the practice of participating in various work, and strengthen the labor point of view and team spirit.

Three experimental steps

Leveling

The ampoule level is roughly equidistant from point A and point B for rough leveling and eyepiece optics.

Rear view A point on the level, after reading the rear view reading, record; front level B point on the level, after reading the front reading, record, and calculate the two points h1. Change the height of the instrument, read the level gauge record of point A after leveling; read the reading record of point B of the front view point after leveling, and calculate the height difference h2.

If h1-h2 is in the range of +5mm or -5mm, take the average of the two as AB height difference, otherwise retest.

Along the selected route, the observation is still carried out by the method of the first station, and the stations are successively set, continuously observed through points C and D, and finally returned to point A.

Check calculation: The sum of the backsight reading minus the forward reading should be equal to the sum of the height differences. Adjustment of height difference closure. Traverse measurement

The ampoule instrument is placed on the test site, centered and leveled. a round of observation;

Pan left: Aim the left target to read the horizontal dial reading a1, and record it in the hand blog; rotate the sighting part clockwise, aim at the right target b1 and record, calculate the upper half round angle value B left = b1-a1 face right: aim Right target, read b2 and record; rotate the sighting counter counterclockwise, aim at the left target, read a2 and record. Calculate the lower half of the back angle value B right = b2-a2

Detection: Check whether the difference between the upper and lower half-return angle values ​​exceeds the limit. If there is no over-limit, calculate a return angle value B=/2 theodolite orientation

Install the theodolite at point E, aim at point F, brake the sighting unit, turn the telescope up and down, direct the assistant at a certain point between the two points, move the test to the left and right, measure the distance from the test to E with a tape measure, and measure The distance of F. Protractor with theodolite method

After the station E is installed in the theodolite, after the centering is leveled, the left side of the panel is connected to the control point D and the horizontal dial is matched to 0 degrees 0 minutes and 0 seconds.

Before the mapping, according to the location of the station, the terrain and the range of the ruler, the alignment is roughly arranged. The ruler sequence should be coherent and consider the ruler route counterclockwise.

According to the agreed route, the line of sight is placed at each broken point, and the upper, lower, vertical and horizontal angles are recorded.

According to the observed horizontal reading readings and the calculated horizontal distance, the broken points are drawn on the drawing with a special protractor, and the elevation is marked, and the ground objects are drawn in time.

Move the station and survey at the same time until the features in the range have been displayed.

Four experimental experiences

Surveying is a technical subject, and it is a necessary skill for us to learn professional courses. In the classroom, we can only learn some theoretical knowledge, but for the use of instruments, the measurement methods of elevation and the mapping of maps can only stay in the understanding. To the extent that there is a lack of practical ability and experience, I cherish the opportunity of this internship and hope to get exercise from it.

On August 29, 2019, Teacher Chen simply laid the internship task and started a three-week measurement internship. We divided into 6 groups. Liu Bin, Fu Xi Hall, Zhao Yizhong, Jing Gaoli and I were the first. Five groups.

The measurement task is to close the leveling route, measure the elevation of each control point, and draw a topographic map. The first two weeks of the mission was to lay the groundwork for the third week.

The first week is a measure of the elevation of each point. This week's internship task is relatively easy, but some problems are exposed in the measurement: in the use of the instrument, the foot screw is not adjusted to the proper position before the leveling. , can not be leveled; during the measurement process, be careful not to touch the tripod, so as not to level the realignment, resulting in damage to the instrument; when reading data, did not press the post-pre-post-pre-order, but record In this order, the data is wrong, and because of the rigor, there are many errors.

The distance and angle are measured in the second week, and the three groups complete a set of closed level routes, which requires division of labor between each group, but because the measurement tasks of each group are not allocated well before the measurement, a certain distance is missed. And the measurement of a certain angle, the division of labor between each group is very important, without a good division of labor, the measurement task is not clear enough, and it will waste a lot of time.

The task of the third week is to draw the topographic map. Our group is mainly responsible for the residential building part. The task of this week is relatively heavy, so we should pay attention to the time when we strive for quality. Check the measured area, select points, and measure the broken points in advance. , record, and draw maps, as the number of measurements increases, improve the proficiency of using the instrument, minimize or not make mistakes, shorten the measurement time of each broken point, the coordination is more and more tacit, but in order to catch up , some of the features are missing. I think that if the experiment is not completed, we can't relax ourselves. We should always be vigilant and cautious. We must have a spirit of seeking truth and being pragmatic when measuring.

Through this internship, I realized that measurement is an accurate job. You can't take it for granted. Mastering knowledge should be accurate. You can't let go of every detail. Follow the measurement principle of “step by step check.” I need to grind. Practice yourself, make yourself more careful, patient, and persevering. Only in this way can you take less detours in your work position; practice is the only criterion for testing truth. Only the combination of theoretical knowledge and practice can make the two complement each other. Applying theoretical knowledge to complete the measurement work; the measurement work is not done by one person, so each team member should have a spirit of collaboration. Each team member should be motivated and face the problem without shrinking. Only in this way can a good team be formed. In order to cooperate with each other, there is more and more tacit understanding; when encountering problems, you need to take care of your thoughts, you should not be self-defeating, you should be patiently looking for ways to solve problems; through continuous practice, you will improve your proficiency in level and theodolite, and at the same time The understanding of leveling, angle measurement, length measurement, and mapping is also deeper.

This internship not only improved the knowledge, but also accumulated some practical experience. I also honed my character and let me know the importance of the details. At the same time, the friendship with my classmates gradually became in the three-week internship. Ascend. I hope that there will be more internship opportunities in the future to hone myself!

Part 2: Measurement Internship Report

In order to better adapt to the future work, the school provided a four-week civil engineering survey internship. The content of this internship is the practice of engineering survey knowledge. The internship requirement is that we can achieve the basic operation of engineering survey. The degree of mastery. Compared with the previous classroom internships, this internship is more concentrated, more extensive, and more systematic. It is based on the actual control of measurement and production, and deepens the understanding, mastery and comprehensive application of book knowledge. It is to cultivate our theory and practice. Quality of independent work ability, comprehensive analysis of problems and ability to solve problems. It is also a concrete, vivid and comprehensive technical practice.

The first week's task was to perform traverse and leveling measurements. The wires, starting from a set of known control points, passed through several points and back to the starting point to form a closed polygon that became a closed wire. His field work includes: surveying and selecting points, establishing signs, measuring angles, measuring edges, etc. The internal calculation is to calculate the plane coordinates x, y of each wire point. Before the calculation, the wire measurement field record should be thoroughly checked, whether the data is complete, whether there is any mistakes and errors, whether the results meet the accuracy requirements, and whether the data is accurate. This is the first time we have used a level gauge, total station since our internship. After completing this task, we are ahead of the other groups, but the error calculation, we found that our error exceeds the allowable error range, the teacher said that the first week of data directly affects the next week's measurement tasks, we can only rework, However, we found that we had problems in the alignment process, and then we carefully adjusted the instrument, and there was almost no error in the data after the measurement.

In the second week, we are going to do topographic mapping. This week our mission is to measure the topographic map of the part of the Century Building of the Railway Institute, mainly using the closed wire control points measured in the first week to observe the broken points, due to the whole station. The instrument has the function of recording data. The main difficulty of this week is the mapping in the industry. This time the workload is large, but the work is difficult, so our components are two groups, one group is working in the morning, one group is in the afternoon, which ensures that the task can be completed satisfactorily, and allows us to better arrange the time. The hardest part of this week is the knowledge of CAD and CASS software operations and the knowledge of computer processing software. If too much data is accidentally missed, it is necessary to mark the position of each point during the measurement to facilitate recording. This week, one group of people got up early, the other group returned late, the weather was too hot, which also improved our hard work.

In this week, we need to make the line test. The line test must first calculate the internal industry. First, calculate the comprehensive elements of the curve, and then calculate the mileage of each pile and the pile. Then conduct field measurements. It was raining that day, but we still insisted on measuring the point. The most important thing is to ensure that the instrument is ok.

The last week's mission is bridge control measurement. This week's mission is first to measure the bridge control network, and then the internal industry calculates two angles, followed by the staking of the pier, and the ground piers are laid out according to the calculated two angles. Position, we have to use the theodolite this week. At first, we used a rough aim. After we saw it, we found that no matter how the instrument was debugged, we could not level the instrument. We could only change the instrument. It was noon when the instrument was replaced. At this time, the sun was shining. Very glaring, we still bite our teeth, but found that the difference between 2C is too big, the instrument is no problem, we think it should be the cause of the weather. Then we measured the discovery data in half a night, and we know how much the weather affects the measurement...

During the four weeks of measurement, I trained a lot of basic skills in mapping. First of all, I am familiar with the use of the total station, and I am familiar with the various methods of using the total station, and mastered the inspection and calibration methods of the instrument. Secondly, in the process of checking and correcting the data, the sources of various measurement errors are understood, and how to avoid measurement errors and minimize the measurement error is understood. In addition to being familiar with the use of the instrument and understanding the source of the error and the measures to reduce it, you should also master a set of scientific measurement methods. In the measurement, you must follow certain measurement principles, such as: "from the whole to the local", "first control after crushing "Working principle of "from high to low level" and "checking step by step". This not only prevents the accumulation of errors, but also finds errors in time, and can improve the efficiency of measurement.

Through this internship, I really realized that a lot of knowledge can't be learned in class in the textbook. The practical hands-on ability, the importance of theory and practice, the decisiveness of dealing with on-site issues, the importance of unity and cooperation, and the valuable experience gained from this internship will be a valuable asset for my future work and study. Thanks to the school for providing us with this internship opportunity, I hope there is another chance.

Part 3: Measurement Internship Report

In the past two weeks, under the leadership of the teacher, we started an internship in the course of “Engineering Measurement”. Engineering measurement is a combination of theory and practice. Internship is the second classroom of university life and the touchstone for testing truth. In the classroom, the abstract narratives in the books often make us difficult to master, but when we face the actual operation of the real thing, we will be able to grasp the relevant knowledge points very quickly and firmly. More importantly, the internship enables us to work more closely with the practical tasks, and to complete the required actual tasks. This is also an effective way for college students to grow and develop. Therefore, I understand the importance of the internship and must carefully grasp this rare learning opportunity.

Looking back now, the two-week internship is sour, sweet, bitter and spicy. Our first task is to choose a control point. On the first day of the internship, due to the unfamiliarity with the calculation method, our calculation results have been very inaccurate. We can only look at the problem and slowly correct it by constantly comparing the books with other group members. Due to the complicated calculation formula and the repeated calculations, everyone has a headache. Some of the group members also showed frustration on their faces... Until the next day, when our data results finally matched the actual results after the lofting, we felt the bitterness. In addition, our second task is a four-level leveling. When we worked hard for a day, we finally measured the data of the Youth Park circle. When we were resting, we were told by the team responsible for the calculation that the closure was not satisfactory. That means our daily efforts are gone... Everyday Every day, we must be accompanied by the heat or the rain, carrying the relevant computing items with the instrument, busy and busy inside and outside the youth park, even abandoned during the lunch break. Our spirit and energy are consumed a lot.

From the days of the two-week internship, I got a lot more valuable things from it:

First of all, through the internship, let me discover a lot of knowledge loopholes in my usual study. The knowledge used in the introduction of instruments in the textbooks is relatively abstract. When it comes to real practice, we have not been able to apply the book knowledge to practice very well, and teachers need to be guided again. In close contact with these objects, I can grasp the relevant knowledge points more firmly; it also enables me to improve the proficiency and precision of the operation of the instrument.

Secondly, through this internship, it is conducive to cultivating the style of doing things rigorously, seriously, and not afraid of hardships and hardships. Whether it is repeated accurate aiming during the leveling process or repeated verification of the calculation data during the stakeout calculation, each step is as far as possible to be down-to-earth and meticulous, so that the error is reduced as much as possible, and errors are detected in time; regardless of the external environment. It’s bad, it’s not a problem to overcome it; to face the difficulties correctly, learn to calm down and patiently analyze and analyze problems, and be able to find solutions through independent books. To be responsible and responsible, if you make a mistake because of yourself, take the initiative to take the initiative and remedy.

Third, through internships, it can promote the spirit of teamwork. It enhances communication and solidarity among the students, complements each other, divides labor and cooperation, faces and solves problems together, seeks ways to accomplish tasks faster and better, improves team work efficiency, and ensures the completion of progress.

Moreover, I found that our internship experience is still lacking, and I don't know how to solve it when I find the problem. For example, when measuring angles, sometimes the angle difference between the left and right discs is different. I don't know what happened at that time. Then I understand that one is increasing from 0 degrees to more than 100, one is over 360 degrees, plus 360 and then bad. The use of this measuring instrument and the in-depth measurement internship work made us more intuitively exposed to the discipline of civil engineering measurement. It also laid a solid foundation for us to use the instrument better and faster, and to control the measurement and distribution after we got on the job in the future. The basics. It also allows us to understand the practical and practical characteristics of the water conservancy engineering profession, triggering us to work harder to learn professional knowledge in the future, and to strengthen the combination of theory and practice, and to improve our professional level in essence. Therefore, internships are very important in college life. A person's knowledge and ability can only be effective in practice, in order to be enriched, improved and developed. For college students to grow up, they must be diligent in practice, combine the theoretical knowledge and practice they have learned, continue to learn in practice, continue to summarize, gradually improve, innovate, and improve their knowledge, ability, wisdom, etc. in practice. The comprehensive qualities and abilities of the factors. In the future, I will cherish every internship opportunity, and I will dig out what I can't get in the classroom, and lay a good foundation for the success of my career.

The surveying internship for nearly two weeks was over. Although everyone was tired at the beginning, we were very happy to see our harvest. I feel that I have learned a lot. There is a comprehensive opportunity to apply the measurement knowledge of the previous piecemeal. I have learned a good understanding of the overall concept of the measurement and topographic mapping process. I have learned more proficiency in the use of measuring instruments and tools such as level and theodolite, and the total station has some basic basics of measurement and topographic mapping. The theory and method have consolidate the theoretical teaching knowledge, improve the technical knowledge of the actual operation, and master the control ability of the graph root. The measurement knowledge that the original teacher explained in the classroom has also been applied in practice and played an important role, thus improving my measurement knowledge and level with each other. It is necessary to come to this painful internship.

At the same time, in this internship, I once again realized the importance of the team spirit of the internship: each person's carelessness and a general idea may directly affect the progress of the project, or even bring losses that cannot be recovered in a lifetime. Once a measurement internship is completed, it is not enough to rely solely on the strength and concept of a person. Only the cooperation and solidarity of the group can make the internship complete quickly and efficiently. This measurement internship has cultivated the ability of our team to work together. Improve the feelings between the students. Although we have time, we will be red-faced because of some of our own internships, but everyone is thinking about the perfection of the internship to be completed.

In this internship, we have a deeper understanding of the previous study:

1. Leveling measurement. The youth park level route, this is mainly to lay the foundation for the future wire measurement. When testing the measured data, it can find the error and immediately solve the rework immediately when the reading is over the line. At the same time, it is also found that the third measurement work is generally The measurement, calculation process and results are faithfully reflected in the prescribed record form. There is a calculation check in the table, ∑a ∑b=∑h, which only indicates that the calculation is correct, but it does not reflect the merits of the measurement results. After the end of the field, the calculation of the height difference closure difference is performed within the allowable range of the tolerance, that is, according to the length of the standard route or the number of stations. If the tolerance is exceeded, it must be retested. Only qualified.

2. Angle measurement. The angle measurement is very demanding for our professional students, using the dj-2 instrument. This requires a rigorous style of work, and can not be sloppy for every detail. At each intermittent point, the test is reworked and retested if it exceeds the limit. In order to avoid large errors in the internship, we also summed up a lot of experience. For example, we use the method of taking the average of the face 1 and face 2 to eliminate the eccentricity error of the sighting, the axis of the sight is not perpendicular to the horizontal axis and the horizontal axis. Residual error that is not perpendicular to the vertical axis. However, the vertical axis tilt error cannot be eliminated by this method. This method can be used to eliminate the influence of the index difference when observing the vertical angle. For example, when observing the angle of the endpoint on the short side, pay special attention to the alignment. When aiming at the target, try to aim at the bottom of the target, because their influence on the angle measurement is proportional to the distance. In order to eliminate the scoring error of the dial, it is necessary to configure the position of the dial, and configure each roundback. The main problems we encountered during angle measurement were mainly the effects of instrument sinking and roadside pedestrians. Since the candidate points are far away when making the wires, the pedestrians in the past are very disturbed, so sometimes it is necessary to take time to do when there are few people. During the angle measurement process, let us all see the importance of rigorous work in the work. After the angle measurement, we are better united.

Finally, after the harmonious work of each team member, we also completed the work of the map. We are all excited when we see the pictures we have spent. The measurement is close to the end, and I feel that the harvest is really quite a lot. Of course, there are many teachers' teachings and the help of my classmates. Today, we also have experience in the exchange measurement of our classmates. Everyone feels that there are many gains, and some say that the instrument is in the exhibition. It is very important to relate to the size of the error. It can be said that the speed of the instrument and the measurement speed is a leap. We also learn how to solve the problem while we are facing various problems. There is a good connection for entering the society in the future. Thanks to the school for giving us this opportunity to better cater to the needs of society.