How to calculate the turning point of the level
In engineering surveying, the calculation of the level turning point is a basic but crucial link. This article will introduce in detail the calculation method of the level turning point, and combine it with the hot topics and hot content on the entire network in the past 10 days to provide you with practical technical guidance.
1. Basic concept of level turning point
Level turning point means that during the measurement process, due to terrain restrictions or a large measurement range, it is necessary to set up temporary measuring stations (turning points) to transfer elevation. The calculation of the turning point directly affects the accuracy of the measurement results.
2. Calculation steps of level turning point
The following are the specific steps for calculating the level turning point:
| steps | Operation content |
|---|---|
| 1 | Set starting point elevation (known point) |
| 2 | Set up a level between the starting point and the turning point |
| 3 | Take backsight and forwardsight readings |
| 4 | Calculate the turning point elevation: turning point elevation = starting point elevation + backsight reading - frontsight reading |
| 5 | Repeat steps 2-4 until all measurement sections are completed |
3. The correlation between the hot topics on the entire network in the past 10 days and the turning points of the level
Recently, hot topics in the field of engineering measurement have mainly focused on intelligent measurement equipment and efficient calculation methods. The following are relevant hot topics:
| hot topics | Related content |
|---|---|
| 1. UAV measurement technology | Drone-assisted measurement can reduce the number of transfer points and improve efficiency |
| 2. Artificial Intelligence Data Processing | AI algorithm can automatically calculate the turning point elevation to reduce human errors |
| 3. Real-time dynamic measurement (RTK) | RTK technology can replace the traditional level turning point method |
4. Example of level turning point calculation
The following is a specific example of level turning point calculation:
| measuring station | Rear view reading (m) | Forward looking reading (m) | Elevation(m) |
|---|---|---|---|
| BM1 | 1.256 | - | 100.000 |
| TP1 | 1.189 | 1.543 | 99.902 |
| TP2 | 1.476 | 1.210 | 100.168 |
Calculation formula: TP1 elevation = BM1 elevation + backsight reading - frontsight reading = 100.000 + 1.256 - 1.543 = 99.902m
5. Things to note
1. Ensure that the level is accurately leveled to avoid instrument errors.
2. The turning point should be in a stable and difficult to move location.
3. Careful checking should be done when recording data to avoid human errors.
4. Misclosure check should be carried out during the measurement process to ensure data reliability
6. Summary
The calculation of the level turning point is the basic work of engineering surveying, and it is crucial to master the correct calculation method. With the development of measurement technology, intelligent equipment is gradually changing the traditional turning point measurement method, but the basic principles still apply. Through the introduction of this article, I hope it can help you better understand and apply the calculation method of level turning point.
In actual work, it is recommended to combine the latest measurement technology and equipment to improve work efficiency and measurement accuracy. At the same time, measuring instruments are calibrated and maintained regularly to ensure data accuracy.
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