Rock stratum settlement magnetic induction monitoring device and operation method thereof

A monitoring device, magnetic induction technology, applied in the direction of measuring device, surveying and navigation, height/horizontal measurement, etc., can solve the problem that the monitoring device cannot be stably fixed on the rock wall of the monitoring hole for a long time, cannot be recycled and reused, and cannot be adjusted again, and achieves Significant economic benefits, simple structure, and the effect of recycling

Active Publication Date: 2021-06-11
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a rock formation subsidence magnetic induction monitoring device and its operation method to solve the problem that the existing monitoring device cannot be stably fixed on the rock wall of the monitoring hole for a long time, and cannot be recycled and reused, and once the subsidence magnetic induction One or more of the problem that the ring position is installed incorrectly, cannot be adjusted again, and the cost is high

Method used

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  • Rock stratum settlement magnetic induction monitoring device and operation method thereof
  • Rock stratum settlement magnetic induction monitoring device and operation method thereof
  • Rock stratum settlement magnetic induction monitoring device and operation method thereof

Examples

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Embodiment 1

[0065] A specific embodiment of the present invention discloses a rock formation subsidence magnetic induction monitoring device, such as Figure 1-2 As shown, the rock formation subsidence magnetic induction monitoring device includes a subsidence magnetic ring assembly 14 and an installation conduit 15. The subsidence magnetic ring assembly 14 is installed on the drill pipe of the drilling rig through the installation conduit 15, and the drill pipe is used to rotate, lift, fall and cooperate with the installation conduit 15 to make the The anchor hoop assembly shrinks and expands, and then realizes the installation and recovery of the subsidence magnetic ring assembly 14, which overcomes the defect that the subsidence magnetic ring cannot be recovered without damage after the monitoring of the existing monitoring method.

[0066] The subsidence magnetic ring assembly 14 includes a magnetic induction iron ring 7-1, a magnetic ring sleeve 7-2 and an anchor hoop assembly, the ma...

Embodiment 2

[0100] Yet another specific embodiment of the present invention discloses a method for monitoring the dynamic development of overburden mining and detachment layers, the steps of which are as follows: Figure 7 As shown, the monitoring method shown includes the following steps:

[0101] S1. Determine the installation depth of the subsidence magnetic ring based on the range of the detachment development zone; this step is specifically:

[0102] The mining of the coal seam leads to stress failure of the original overlying rock, and the overlying rock on the coal seam will form a water-conducting fracture area and a separation layer development area. As shown in 8, the separation layer development area ranges from the bottom interface of the Quaternary soil layer to the top interface of the water-conducting fracture zone , according to the following formula to calculate the development depth H of the detachment layer s :

[0103] h s =H c -H f

[0104] Where: H s is the deve...

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Abstract

The utility model relates to a rock stratum settlement magnetic induction monitoring device. The device comprises a settlement magnetic ring assembly and an installation guide pipe, wherein the settlement magnetic ring assembly comprises an anchor hoop assembly, a magnetic induction iron ring and a magnetic ring sleeve arranged outside the magnetic induction iron ring in a sleeving mode; the anchor hoop assembly is arranged on the outer circumference of the magnetic ring sleeve and has a contraction state and an expansion state; the anchor hoop assembly in the contracted state can move in the monitoring hole, and the anchor hoop assembly in the unfolded state and the hole wall of the monitoring hole are provided with at least two height supporting points in the vertical direction; two ends of the installation guide pipe are connected with the drill rod and the magnetic ring sleeve correspondingly, the drill rod is matched with the installation guide pipe to enable the anchor hoop assembly to be in a contracted state and an unfolded state, and therefore installation and recovery of the settlement magnetic ring assembly are achieved. The device is simple in structure and convenient to operate, not only can be stably fixed on the hole wall of the monitoring hole for a long time, but also can be moved out of the monitoring hole after monitoring is completed, repeated use is achieved, the cost is remarkably reduced, and remarkable economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of coal mine separation layer settlement monitoring devices, and in particular relates to a rock layer settlement magnetic induction monitoring device and an operating method thereof. Background technique [0002] Different depositional times and depositional environments will result in differences in formation lithology and thickness. When the coal seam is mined, the destruction of the original rock stress of the overlying rock leads to inconsistent settlement deformation of each stratum, thus forming a separation space between the strata. On the one hand, under the action of negative pressure, a large amount of water resources in the overlying rock aquifer accumulates in the cavity of the separation layer. When the scale develops to a certain extent, instantaneous water inrush accidents from the separation layer will occur, threatening the safe mining of the mine working face. On the other hand, the closu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 李文平陈维池秦伟吕振猛王启庆杨玉茹
Owner CHINA UNIV OF MINING & TECH
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