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A network digital straight-rod direct-reading roof abscission instrument

A roof abscission instrument and direct-reading technology, applied in mining equipment, mining equipment, earth-moving drilling, etc., can solve the problems of low precision, lack of data analysis function, and high cost, so as to facilitate centralized and unified management, observation and measurement Convenience and the effect of improving the level of safety management

Active Publication Date: 2015-09-30
SHANXI COAL TRANSPORTATION & SALES GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Summarize the four existing digital roof delamination instruments. The main problems are: 1) high cost; 2) inconvenient networking and inconvenient It is very suitable for installation in mine underground roadways; 3) The data cannot be saved in large quantities, and it does not have the function of data analysis; 4) The sensors are mainly grating rulers, photoelectric codes and resistive types, which have defects such as high cost or low precision

Method used

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  • A network digital straight-rod direct-reading roof abscission instrument
  • A network digital straight-rod direct-reading roof abscission instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: A mine 3 # The burial depth of the return air trough 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.

[0025] A digital straight-rod direct-reading roof separation instrument is arranged in the tunnel, such as figure 1 , figure 2 as shown,

[0026] The present embodiment comprises sensor network node 1 and wireless base station 2, and sensor network node 1 is made of base point anchor head 5, measuring rope 6, vertical measuring cylinder 7, segmented digital capacitive displacement sensor 8, processor 9 and direct-reading monitor 10 and other components, wherein the light control element of t...

Embodiment 2

[0028] 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 straight-rod direct-reading roof delamination instrument is arranged in the roadway. The total number of digital straight-rod direct-reading wireless sensor network nodes 1 is 22, the working voltage of the wireless base station 2 is 127V, there are 2 base stations, and the monitoring time is 8 In July, the actual monitoring effect was good, and the display values ​​of the direct-reading monitor 10 and the wireless base station 2 did not change, that is, the rock formations at these 22 places had no separation layers inside and outside the bolt anchorage range. Others are with embodiment 1.

Embodiment approach 3

[0029] Implementation mode 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. The digital straight-rod direct-reading roof delamination instrument is arranged in the working face. The communication distance between the sensor network nodes 1 of the digital straight-rod direct-reading roof delamination instrument is 20m, and the total number of wireless sensor network nodes 1 is 9. The working voltage of base station 2 is 380V, there are 2 base stations, and the monitoring time is 12 months. The actual monitoring effect is good. There are 4 positions of abscission within the anchoring range of the anchor bolt, and there are positions of abscission outside the anchoring range of the anchor bolt. 3 places. Others are with embodiment 1.

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Abstract

The invention discloses a network digital straight-bar direct-reading roof separation instrument. The network digital straight-bar direct-reading roof separation instrument comprises sensor network nodes and a wireless base station. Each sensor network node is composed of a base point anchor head, measuring ropes, a vertical measuring tube, a segmented capacitance-type displacement sensor, a processor and a direct-reading monitor. 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 network nodes are in communication with the closely-adjacent sensor network nodes only; a grid structure is adopted for part of the network structure, the sensor network nodes are in communication with the secondarily-adjacent sensor network nodes only, and the communication distance between the sensor network nodes is smaller than 100m. According to the network digital straight-bar direct-reading roof separation instrument, network digital straight-bar 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 straight rod direct-reading roof detachment instrument. Background technique [0002] At present, the digital roof abscission instrument used in the underground roadway of mines in coal-measure strata in China is mainly a digital straight-rod direct-reading type. There are mainly four representative products, namely the GUD-240 surrounding rock abscission sensor and the GYW300 surrounding rock displacement measurement instrument, YHW150 roof displacement monitor and grating displacement monitoring system, etc. [0003] 1) GUD-240 surrounding rock separation sensor. This product uses infrared transmission to exchange data with the handheld terminal. After the handheld terminal collects the data of each delamination instrument, it exchanges data with the computer, stores and analy...

Claims

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Application Information

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