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Unknown goaf waterlogged area detection method based on direct-current detection

A detection method and technology for stagnant water areas, which are applied in the fields of electrical/magnetic detection for logging records, water resource assessment, climate sustainability, etc. The problem of low precision is to achieve the effect of less labor, high accuracy and high measurement efficiency for measuring personnel.

Inactive Publication Date: 2016-03-09
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the resistivity of conglomerate, sandstone, siltstone, mudstone, and coal in some underground coal mine formations varies greatly, and the metal interferes with the detection effect, the detection accuracy of the traditional direct current method is not high, and the traditional direct current detection The detection effective range of the method is small, multiple detections are required, and the labor load is large

Method used

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  • Unknown goaf waterlogged area detection method based on direct-current detection
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Examples

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Effect test

Embodiment 1

[0015] The specific steps of a method for detecting unidentified mined-out water accumulation areas based on direct current detection are as follows: figure 2 Shown:

[0016] Step 1. Arrange power supply electrodes and measuring instruments in the excavation roadway. The measuring instrument adopts the ground three-pole detection device. Determine a point on the bottom plate within 100 meters from the working face in the excavation roadway as the center point, and install the ground three-pole detection device. Fixed at the center point, the first power supply electrode, the second power supply electrode, the third power supply electrode, the fourth power supply electrode and the fifth power supply electrode are evenly arranged along the tunneling direction with the center point as the origin, and the reverse tunneling direction is evenly arranged with the center point as the origin Arrange the sixth power supply electrode, the seventh power supply electrode, the eighth power...

Embodiment 2

[0023] The specific steps of a method for detecting unidentified mined-out water accumulation areas based on direct current detection are as follows:

[0024] Step 1. Arrange power supply electrodes and measuring instruments in the excavation roadway. The measuring instrument adopts the ground three-pole detection device. Determine a point on the bottom plate within 100 meters from the working face in the excavation roadway as the center point, and install the ground three-pole detection device. Fixed at the center point, the first power supply electrode, the second power supply electrode, the third power supply electrode, the fourth power supply electrode and the fifth power supply electrode are evenly arranged along the tunneling direction with the center point as the origin, and the reverse tunneling direction is evenly arranged with the center point as the origin Arrange the sixth power supply electrode, the seventh power supply electrode, the eighth power supply electrode,...

Embodiment 3

[0031] The specific steps of a method for detecting unidentified mined-out water accumulation areas based on direct current detection are as follows:

[0032] Step 1. Arrange power supply electrodes and measuring instruments in the excavation roadway. The measuring instrument uses a ground three-pole detection device. Determine a point on the bottom plate within 100 meters from the working face in the excavation roadway as the center point, and install the ground three-pole detection device. Fixed at the center point, the first power supply electrode, the second power supply electrode, the third power supply electrode, the fourth power supply electrode and the fifth power supply electrode are evenly arranged along the tunneling direction with the center point as the origin, and the reverse tunneling direction is evenly arranged with the center point as the origin Arrange the sixth power supply electrode, the seventh power supply electrode, the eighth power supply electrode, the...

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Abstract

The invention provides an unknown goaf waterlogged area detection method based on direct-current detection and belongs to the field of mine detection. The method comprises arranging power supply electrodes and a measuring instrument in an excavation roadway, wherein the power supply electrodes are electrically connected to a controller arranged inside the measuring instrument; sequentially selecting the first power supply electrode and the sixth power supply electrode, the second power supply electrode and the seventh power supply electrode, the third power supply electrode and the eighth power supply electrode, the fourth power supply electrode and the ninth power supply electrode as well as the fifth power supply electrode and the tenth power supply electrode as measuring objects respectively, carrying out measurement and recording data, and summarizing the measured data recorded by the controller; and calculating resistivity and analyzing change of the resistivity and distribution information of unknown goaf waterlogged areas. The method is wide in effective detection range, high in accuracy, flexible and simple to use, and little in labor amount of measuring personnel.

Description

technical field [0001] The invention belongs to the field of mine detection, in particular to a method for detecting unknown mined-out water accumulation areas based on direct current detection. Background technique [0002] Accurate detection of hydrogeological conditions in coal mine goaf has extremely important guiding significance and practical application value for safe mining of coal mines. In some areas, the strong water-rich nature of the goaf seriously threatens the safe production of coal mines. In order to timely check the water accumulation in the goaf or in front of the working face and ensure the safe production of coal mines, the direct current method is usually used in engineering to detect the water accumulation in the mining area. , The mine geological structure of the working face, and the water-bearing fractured zone of the coal seam floor. However, because the resistivity of conglomerate, sandstone, siltstone, mudstone, and coal in some underground coal...

Claims

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Application Information

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IPC IPC(8): G01V3/22
CPCG01V3/22Y02A90/30
Inventor 张大明张立新李刚乔宁秦洪岩李洋郭超
Owner LIAONING TECHNICAL UNIVERSITY
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