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Coal mine downhole measurement method

An underground measurement and coal mine technology, applied in the field of measurement engineering, can solve the problems of low measurement accuracy, heavy task of underground re-measurement wire, affecting underground production, etc., to improve work efficiency, reduce the time for site erection, and eliminate overall errors. Effect

Inactive Publication Date: 2018-08-03
SHAANXI BINCHANG WENJIAPO MINING IND CO LTD
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AI Technical Summary

Problems solved by technology

The downhole re-measurement wire task is heavy, and the production time cannot be occupied during the measurement. The production gap is often used to measure quickly, which often leads to low measurement accuracy, or long-term measurement affects downhole production.

Method used

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  • Coal mine downhole measurement method
  • Coal mine downhole measurement method

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Embodiment Construction

[0012] according to figure 1 , figure 2 As shown, when measuring in the underground roadway, the measurement station 3 is arranged on the roadway roof 1 (E1-E5 in the figure), and the corresponding measurement station 3 is placed on the roadway floor 2 respectively (a-d in the figure). Step 1 When the measurement is first started, based on the conventional three (a, b, c) measurements, set up in advance such as figure 1 The fourth measuring frame (d) is shown as a preliminary measuring station.

[0013] Step 2 After step (1) is completed, as long as the first station measurement is completed, the second station measurement can be carried out immediately, without waiting for the centering and leveling of the front sight, and at the same time, the figure 1 The first frame in (a) moves forward and becomes in position figure 2 The fourth measuring frame (a) in ; follow step 2 in turn until the end of this measurement task.

[0014] All simple modifications, changes and equiv...

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Abstract

The invention relates to a coal mine downhole measurement method, which specifically comprises: (1) arranging four measurement frames for measuring at each station; (2) immediately measuring at the second station after measuring at the first station; and (3) sequentially measuring until completing the measurement work. With the method of the present invention, the centering error and the levelingerror during the measuring of the traditional measurement method can be effectively eliminated, the accuracy of the measurement can be increased, the whole error can be eliminated, the great advantagecan be provided in the long-distance downhole repeated measurement of the branch conductor, the time for arranging the station is substantially reduced, and the working efficiency is improved.

Description

technical field [0001] The invention relates to survey engineering, in particular to a coal mine underground survey method. Background technique [0002] Harsh conditions such as long and narrow coal mine tunnels, high wind speed, and insufficient light seriously restrict the accuracy and efficiency of underground measurement work. Downhole re-measurement wire task is heavy, the production time should not be taken up during the measurement, and the production gap is often used for rapid measurement, which often leads to low measurement accuracy, or long-term measurement affects downhole production. Therefore, it is urgent to find a method that can improve the accuracy and efficiency of underground coal mine measurement. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for coal mine underground measurement aiming at the above-mentioned deficiencies in the prior art. [0004] In order to solve the above-m...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00
CPCG01C15/00
Inventor 高智勇刘庆利
Owner SHAANXI BINCHANG WENJIAPO MINING IND CO LTD
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