Coal mine bottom plate water guiding channel identification method based on micro-seismic monitoring

A technology of microseismic monitoring and water guide channel, which is applied in mining equipment, mining equipment, earthwork drilling and mining, etc., can solve the problems of inability to detect potential water conduction, real-time monitoring of the activation law of the rupture and instability process, etc., so as to reduce coal mine The effect of capital investment, strong economic value and social significance, and broadening the scope of application

Inactive Publication Date: 2017-02-22
DALIAN UNIV OF TECH
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Problems solved by technology

Obviously, the above method can neither detect potential aqueducts, nor monitor the "

Method used

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  • Coal mine bottom plate water guiding channel identification method based on micro-seismic monitoring
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  • Coal mine bottom plate water guiding channel identification method based on micro-seismic monitoring

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Embodiment 1

[0044] The coal mine floor water guide channel identification method based on microseismic monitoring in this embodiment includes the following steps:

[0045] S1: Establish a microseismic monitoring system and a water inflow monitoring system in the monitored coal mine. 15 microseismic geophones are arranged on both sides of the roadway, and the distance between microseismic geophones is 60m.

[0046] S2: After the coal mining work starts, the microseismic monitoring data of the working face shall be collected continuously for 24 hours. During the collection process, detailed records shall be made of the progress of the working face and the geological conditions of the working face. Both the microseismic monitoring system and the water inflow monitoring system transmit the monitored data to the surface data storage and processing terminal set on the ground through optical fiber, and filter, microseismic event determination, and microseismic event location in sequence accordin...

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Abstract

The invention discloses a coal mine bottom plate water guiding channel identification method. The method comprises the steps that a micro-seismic monitoring system obtains micro-seismic event locating information and seismic source parameters through monitoring; a water inflow monitoring system monitors the water inflow every day; the forming process and time of a bottom plate water guiding channel are obtained through the rapid increasing of the number of micro-seismic events within a short time on the basis that the water inflow of a working face is increased rapidly; then an energy density cloud picture is made, and the position of the bottom plate water guiding channel on a plane is obtained finally by observing the energy density cloud picture; and at last, the area bottom plate scale height is determined according to the position and geological conditions of the bottom plate water guiding channel on the plane, and therefore the extending depth of the bottom plate water guiding channel is determined. The coal mine bottom plate water guiding channel identification method has high economical value and social significance to widening of the application range of micro-seismic monitoring, reduction of coal mine capital investment and guaranteeing of mine safety production.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety production and mining engineering, and in particular relates to a method for identifying a water guide channel of a coal mine floor based on microseismic monitoring. Background technique [0002] Water source, water quantity and water channel are the three basic elements of coal mine water inrush. field. Before coal seam mining, there are relatively few studies on the detection of potential aqueducts, especially the "static" in-situ research on aqueducts; during coal seam mining, the "dynamic" rupture of aqueducts is unstable Real-time monitoring and research on processes and activation laws are even less. The "static" characteristics of the rock mass and the lack of research on the "dynamic" failure process run through the entire process of coal mine water prevention and control engineering, which is the main reason for the frequent occurrence of water inrush accidents. [0003] At th...

Claims

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Application Information

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IPC IPC(8): E21F17/00E21F17/18
CPCE21F17/00E21F17/18
Inventor 李连崇程关文马天辉唐春安
Owner DALIAN UNIV OF TECH
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