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Multi-point displacement meter installation and automatic data collection method of steeply inclined seam roadway

A technology of automatic acquisition and displacement meter, which is applied in the direction of measuring devices, instruments, etc., can solve problems such as weak and unable to meet the needs of new support technology research

Inactive Publication Date: 2014-07-02
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the basic test work done on the coal seam roadway is still relatively weak, and cannot meet the needs of new support technology research

Method used

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  • Multi-point displacement meter installation and automatic data collection method of steeply inclined seam roadway
  • Multi-point displacement meter installation and automatic data collection method of steeply inclined seam roadway
  • Multi-point displacement meter installation and automatic data collection method of steeply inclined seam roadway

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Embodiment 1

[0027] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0028] In order to conveniently and accurately test the internal deformation value of the surrounding rock mass of the steeply inclined coal seam roadway, the rod-type multi-point displacement meter is used to test the displacement of the surrounding rock of the roadway, and the data of the multi-point displacement meter is automatically collected and stored by the data acquisition instrument DT80. The study on the deformation distribution and change law of the surrounding rock mass of the coal seam roadway provides first-hand test methods and data.

[0029] A method for installing a multi-point displacement meter and automatically collecting data for a roadway in a steeply inclined coal seam, the steps of which are:

[0030] A. Drilling:

[0031] According to the lithological deformation characteristics and structural occurrence of steeply inclined coal seams, multi...

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Abstract

The invention discloses a multi-point displacement meter installation and automatic data collection method of a steeply inclined seam roadway. The method includes the steps of 1 hole drilling, 2 multi-point displacement meter installation and 3 automatic anchoring data collection. The hole drilling includes the steps that according to lithology deformation of the steeply inclined seam roadway, the direction along a dip angle is selected to be drilled for laying multi-point displacement meters. The multi-point displacement meter installation includes the steps that firstly measuring rods with anchor heads, protection pipes, exhaust pipes and grouting pipes are poked into drilled holes, the exhaust pipes and the grouting pipes are placed according to the direction of the drilled holes, then bases are fixed through a cement mortar accelerating agent, grouting is conducted for hole sealing, and finally displacement sensors are installed. The automatic anchoring data collection includes the steps that a data line of each displacement sensor is led into an intelligent data collection device, half-bridge connection is adopted, sampling is conducted once every day, and the frequency data of the multi-point displacement meters are collected and received automatically and stored in a USB flash disk memory. The method is simple and easy to implement, simple to operate, safe and reliable and lays the foundation for further steeply inclined seam roadway supporting stability study.

Description

technical field [0001] The present invention relates to the technical field of on-site in-situ testing of steeply inclined coal seam roadways, and more specifically relates to a multi-point displacement meter installation and data automatic collection method for steeply inclined coal seam roadways, which is applicable to multiple fields such as roads, railways, water conservancy, and mines Displacement test of surrounding rock mass in underground engineering. Background technique [0002] The surrounding rock of the steeply inclined coal seam roadway has the characteristics of asymmetric deformation and uneven loading of the support body. After the roadway is excavated, it is easy to have the characteristics of stratum mutual displacement and deformation height asymmetry. Therefore, the surrounding rock control and support of deep steeply inclined coal seam roadways has always been one of the key technical problems that plague the construction of steeply inclined coal mine ...

Claims

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Application Information

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IPC IPC(8): G01B21/02
Inventor 伍国军陈卫忠袁敬强
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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