(A) Introduction

Xx to xx in the second end of the semester academic year, since xx years, December 1, we conducted a 14-day Engineering Surveying Practice.

The content of this internship is a practical knowledge of engineering survey, internship requirement is to enable each students to have hands-on engineering measurements to achieve the basic control level. The practice of classroom practice, compared with the previous time is more concentrated, is much more extensive and more systematic procedures for complete measurement of the production from the control reality, to deepen knowledge and further understanding of the books, master and integrated applications, is to develop our theory with practice , the independent ability to work, a comprehensive analysis of problems and problem-solving skills, organization and management abilities of our qualities. Also a concrete, vivid, and comprehensive technical practice.

In the first day of the internship from the Yun-yen, a teacher often gave us a practical mobilization. In the mobilization of the meeting, and often the teacher stressed the importance of this practice, and analysis of water and electricity more complicated geographical conditions, the school and building density and other factors to the difficulties caused by this practice. And to encourage students to strive to overcome difficulties and efforts to complete this internship. Also explained the operation of the device, the relocation of the note and called for self-care practice during the internship period spare. The internship is required of instruments used are mainly water level, standard ruler, tripods, theodolites. The day we officially started the outdoor measurements.

(B) the purpose of internship

1, and consolidate classroom knowledge, deepen their understanding of control surveying the basic theory of understanding, able to work with relevant theory to guide practice, so that theory and practice, improve analysis of issues, problem-solving abilities, and thus control the basic surveying content to be a practical application, so that what they have learned to further consolidate and deepen.

2, through internships, familiar with and master the three or four other control measure operating procedures and Measurement Method.

3, master measuring adjustment theory dealing with the basic skills of controlling the outcome measure.

4, by completing the task of controlling measure the actual exercise, independently engaged in surveying and mapping work to improve the planning, organization and management capabilities, to develop good咱also the quality and professional ethics.

5, are familiar with water level, theodolite, total station works.

(C) the proposed internship

The two-week study and engineering survey has ended, and that through this internship, so I deeply understand the importance of integrating theory with practice. Measurement area is Chongqing Yongchuan Area Water & Electric Vocational and Technical College campus, although the relatively large measuring area is basically the whole school, maps of our whole school plan, in order to fulfill its mandate as quickly as possible, our team on Saturday, Sunday overtime measurements, we measured the process does not feel tired, do not feel hard, but also their own entertainment.

The first is a precision surveying work, through the school during the measurement science classroom learning, so that I formed in my mind a basic, theoretical surveying outline the purpose of the internship is to these theories link with the actual project. Surveying is to study the Earth's shape and size, as well as the ground point and the scientific, in essence, surveying the main task is to identify ground targets in three-dimensional space, location and time changes. In the information society, an increasingly important role of surveying, measuring the results as the basis for geographic information systems, providing the most basic spatial location information. To build the information highway, basic geographic information systems and a variety of topics and professional geographic information systems, are urgently called for the establishment of a uniform standard can be shared databases and measurement of outcomes measurement information system. Therefore, a measurement-based geographic information access and update the most reliable, most accurate means. Surveying the classification there are many, such as the general surveying, geodesy, photogrammetry, engineering surveying. As students of the faculty building, we have to learn all aspects of measurement. Surveying and Mapping foundation is the knowledge base of these professions.

(D) Internship Summary

Through this internship, learned to measure the actual capacity, and more difficulties with patience; have learned the unity among the group, understanding, but also a lot of surveying and mapping exercise their own ability. First of all, are familiar with the water level, the use of theodolite, skilled in water level, a variety of theodolite use and master the instrument test and calibration methods. Second, the data checking and correction process, to understand the various sources of measurement error, its three main areas: equipment error (determined by the instrument itself, is an objective source of error), observation error (due to the technical level personnel a result of belonging to a subjective source of error), external influence error (subject, such as temperature, atmospheric refraction effects of external factors such as these factors are also constantly changing and difficult to control, belonging to a variable source of error). Learn how to avoid the measurement errors, to minimize measurement error approach, that is to be done: 1, in the instrument choice of the right to select high precision instruments; 2, to improve their measurement standards to reduce the error level; 3 through a variety of mathematical methods for data processing such as: distance measurement in the temperature correction feet long correction, multiple measurement averaging to reduce such errors. Third, in addition to the use of the instrument are familiar with and understand the error sources and reduction measures, but also to master a set of scientific measurement, the measurement must be followed in the measurement principles, such as: "From the whole to the partial", "first broken after controlling for the Department of "," senior to the low-level "working principles and achieve the" step by step, there are some checks. " This not only can prevent the accumulation of errors, the timely detection of errors, but also can improve the measurement of efficiency. Through practice, really learned a lot of tangible things, such as the operation of the measuring instruments, the entire flat is more skilled and learned to digital topographic mapping of the Ministry of measurement and broken classroom can not do things, to a large extent raised hands, and mental and physical capabilities.

We have this attachment, he has learned well in order to measure, we must first master the basic theory of excellent knowledge, there must be enterprising spirit, each crew must be hands-on, but also a clear division of labor, and work can be exchanged to do, but also need to know the failure is the mother of success, in practice the process of measurement can not be complete without error, we should not be discouraged, to continue again and again re-measurements, weight calculation, again and again to practice, one times may improve the measurement level, we continue to gain in experience and lessons. But also thanks to the teacher's guidance, we are beginning internship encountered various difficulties, thanks to the patience of the teacher explained, that we have to solve many measurement problems.

We are in the internship process, inevitably encountered some difficulties, in our early days, I am a little bit worried that they will not test, measurement is not good, a concern that only two weeks of measuring time, he could not timely completion of task, but After our group of repeated measurements, our unity, understanding, overcoming the measurement problems, the task was finally completed on time. Internship in the measurement process, we also encountered a variety of difficulties. For example:

(1) the enactment of the ruler, the ruler addition to direct legislation, but also the election in an important place. Therefore, the selection point is very important, point must be selected in a sample of places, keeping in mind not the point the better, the opposite point of too many useless selected will not only increase the measurement, calculation and drawing the amount of labor and multi - time-consuming, but also because many points which have a greater margin of error messy.

(2) with the water level and theodolite measurement process, some large errors arise in the course, after we re-measurement and calculation, the error range can be reduced to the extent permitted inside.

(3) There is a computational problem, the calculation must be completed by two people, a preliminary calculation, a test, however, in this process, although he is still the problem of a calculation error occurred, we are constantly being tested to arrive at the repetition the correct value, as far as possible the error was reduced to a minimum

By actual measurement internship, I learned a lot of tangible things, such as the operation of the instrument is more skilled, learned, and broken terrain mapping of the Ministry of surveying the classroom can not do things, to a large extent to improve the ability of the hands and brains, but also to expand communication with students, co-operation capability. Time measurement of attachment to a complete finish, relying solely on a person's strength and the idea is not enough, and only group cooperation and solidarity in order to allow quick and efficient completion of internship.