Coal seam floor hidden water inrush subsided column dynamic positioning method

A dynamic positioning and coal seam floor technology, applied in the field of geophysical exploration, can solve the problems of small collapsed columns and hidden collapsed columns that are difficult to detect

Active Publication Date: 2017-12-08
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention mainly aims at the technical problem that it is difficult to detect small-scale collapsed columns and concealed collapsed columns in the prior art, and provides a dynamic positioning method for concealed water inrush collapsed columns on the coal seam floor

Method used

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  • Coal seam floor hidden water inrush subsided column dynamic positioning method
  • Coal seam floor hidden water inrush subsided column dynamic positioning method
  • Coal seam floor hidden water inrush subsided column dynamic positioning method

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Embodiment

[0053] The water inrush flooded the well in Mine T. Through the hydrological monitoring hole, it was preliminarily determined that the source of the water inrush was Austrian ash water, and it was speculated that the channel of the water inrush was a collapsed column. When the high-pressure Austrian ash water inrushes from the coal seam floor, the water inrush point will hit the roof of the roadway to form a "secondary seismic source". Using ground microseismic monitoring technology, long-term and dynamic microseismic monitoring and rapid positioning are carried out near the water inrush subsidence column to determine There were 2 suspected water inrush points. Through drilling verification, the position of the subsidence column determined by the microseismic is 26m away from the drilling control point, and the water inrush point is a hidden small subsidence column 77m below the coal seam floor, which is 19m×7m.

[0054] This embodiment proposes a method for locating a hidden ...

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Abstract

The invention relates to a positioning method, belongs to the technical field of geophysical exploration, and particularly relates to a coal seam floor hidden water inrush subsided column positioning method. According to the method, "secondary vibration" generated by a coal seam floor hidden subsided column acting as a high pressure water conducting channel is acquired to act as a vibration source through the ground micro-seismic monitoring technology, and the underground hidden and dynamic water point can be determined through shortest path imaging and inversion analysis so as to accurately locate the position of the hidden subsided column.

Description

technical field [0001] The invention relates to a positioning method, which belongs to the technical field of geophysical exploration, in particular to a dynamic positioning method for a hidden water inrush subsidence column on a coal seam floor. Background technique [0002] In recent years, the water inrush and flooding accidents caused by high-pressure Austrian ash water in the coal seam floor have shown some new features, that is, the top of the austrian limestone karst collapse column developed to 30-50m below the coal seam floor, but did not enter the coal seam. When the coal seam working face is detected, everything is normal, and it is difficult to find small-scale collapse columns when the coal seam floor is grouted; after the coal seam is recovered, the fractured zone and fissure zone of the coal seam floor and the potential hidden collapse column are in the horizontal, The vertical communication is gradual, so that the highly pressurized Austrian ash water passes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
CPCG01V1/288G01V2210/1429
Inventor 程建远胡继武王保利王盼覃思
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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