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Network digital parallel direct-reading roof separation instrument

A roof abscission instrument and direct-reading technology, which is applied to instruments, mining devices, measuring devices, etc., can solve the problems of inability to realize automatic monitoring and data transmission, inconvenient observation and measurement, and time gaps, etc., and improve communication. reliability, improve the level of safety management, and facilitate the effect of centralized and unified management

Active Publication Date: 2013-08-28
SHANXI COAL TRANSPORTATION & SALES GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of mechanical parallel direct-reading roof delamination instrument is easy to use and low in price, but there are the following problems in the process of use: 1) Manual ladder observation, observation and measurement are extremely inconvenient, with large errors and potential safety hazards; 2) Manual timing Observation and measurement of the roof delamination status cannot achieve continuous automatic monitoring and data transmission, and there is a time gap

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: A mine 3 # The burial depth of the transportation channel in the coal seam 3101 working face is about 240m, the section width of the roadway is 5.2m, the height is 4.2m, and the length is 1.0km. The roof of the channel is made of carbonaceous mudstone and siltstone, and the small structure is developed in the channel. The surrounding rock is soft and broken, and the stability of the surrounding rock of the roadway is poor, which is a type IV unstable surrounding rock.

[0021] Arrange digital parallel direct-reading roof abscission instrument in this roadway, such as figure 1 , figure 2 As shown, this embodiment includes a sensor node 1 and a wireless base station 9. The sensor node 1 consists of a base point anchor head 2, a measuring rope 3, a vertical measuring cylinder 4, a segmented capacitive displacement sensor 5, a left measuring cylinder monitor 6, and a right measuring cylinder. Tube monitor 7 and processor 8, wherein, the left measuring tube m...

Embodiment 2

[0023] Example 2: A mine 3 # The buried depth of the first mining face of the coal seam is about 100m, the roof is relatively complete, and the surrounding rock of the roadway is Class II stable surrounding rock. A digital parallel direct-reading roof abscission instrument is arranged in the roadway. The total number of sensor nodes 1 is 22, the working voltage of the wireless base station 9 is 400V, there are 2 base stations, and the monitoring time is 8 months. The actual monitoring effect is good, left There is no change in the direct reading values ​​of the measuring tube monitor 6 and the right measuring tube monitor 7, that is, the rock formations at these 22 places have no separation layers inside and outside the bolt anchorage range. Others are with embodiment 1.

Embodiment 3

[0024] Example 3: A mine 3 # The coal seam 3104 working face is an isolated island working face, the surrounding rock of the roadway is unstable surrounding rock of type V, and the roof is relatively broken. A digital parallel direct-reading roof abscission instrument is arranged in the working face, the communication distance between the sensor nodes 1 is 20m, the total number of nodes is 9, the working voltage of the wireless base station 9 is 380V, there are 2 base stations, and the monitoring time is In 12 months, the actual monitoring effect was good, there were 4 abscission positions within the bolt anchorage range, and 3 abscission positions outside the bolt anchorage range. Others are with embodiment 1.

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Abstract

The invention discloses a network digital parallel direct-reading roof separation instrument. The network digital parallel direct-reading roof separation instrument comprises sensor nodes and a wireless base station. Each sensor node is composed of a base point anchor head, measuring ropes, a vertical measuring tube, a segmented capacitance-type displacement sensor, a left measuring tube monitor, a right measuring tube monitor and a processor. A networking protocol is the ZigBee protocol, a network structure is a self-organizing and self-healing overlay tree structure, a tree structure is adopted for the whole network structure, and the sensor nodes are in communication with the closely-adjacent sensor nodes only; a grid structure is adopted for part of the network structure, the sensor nodes are in communication with the secondarily-adjacent sensor nodes only, and the communication distance between the sensor nodes is smaller than 100m. According to the network digital parallel direct-reading roof separation instrument, network digital parallel direct-reading monitoring on roof separation of an underground roadway of a mine through a wireless sensor network is achieved, observation and measurement are convenient to carry out, automatic monitoring and real-time data transmission are achieved, and safety management levels are improved.

Description

technical field [0001] The invention belongs to the technical field of roof detachment monitoring of underground roadways in coal-measure strata mines, and in particular relates to a network digital parallel direct-reading roof detachment instrument. Background technique [0002] At present, there are two main types of roof separation instruments used in the underground roadway of domestic coal-measure strata mines: mechanical direct-reading roof separation instruments and digital roof separation instruments. Among them, the mechanical direct reading roof separation instrument is mainly divided into two types: parallel direct reading and straight rod direct reading, and the digital roof separation device is mainly straight rod direct reading, and the representative product is GUD-240 Detachment sensors, GYW300 surrounding rock displacement measuring instrument, YHW150 roof displacement monitor and grating displacement monitoring system, etc., and relatively few digital paral...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/18G01B21/02
Inventor 李风珍王东贾存华孙春伟郑铜镖朱跃琴
Owner SHANXI COAL TRANSPORTATION & SALES GRP
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