Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Three-dimensional detection method for use before exploitation of working surface coal bed

A three-dimensional detection, working face technology, applied in electromagnetic wave detection, climate sustainability, water resources assessment, etc., can solve problems such as accidents, avoid accidents, and ensure the safety of life and property.

Active Publication Date: 2013-12-18
HEBEI COAL SCI RES INST
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the detection of hidden water inrush hazards such as the top of the roof of the working face and the periphery of the working face, the traditional pre-mining detection methods have not considered it, so it is easy to cause accidents

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The working face coal seam pre-mining three-dimensional detection method of the present invention, concrete steps are as follows:

[0019] (1) Use radio wave tunnel perspective technology to detect whether there is hidden geological structure in the coal seam layer of the working face, and determine its specific location and range. The distance between the tunnel perspective receiving points is 10 meters, the distance between the transmitting points is less than or equal to 50 meters, and the length of the receiving tunnel corresponding to a single point of transmitting point is not less than 150 meters.

[0020] (2) Use amplitude-frequency electroscopic technology to detect whether there is a hidden water-conducting structure within the scope of the bottom or roof of the working face, and determine its specific location and range.

[0021] (3) Use direct current sounding technology to detect and evaluate whether there is a hidden water-conducting structure under the fl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a three-dimensional detection method for use before exploitation of a working surface coal bed. The method comprises the following specific steps of: detecting whether a buried geological structure exists at the position of the working surface coal bed by adopting a radio wave tunnel penetration technology, and determining the specific position and range of the buried geological structure; detecting whether a buried water guide structure exists in the range of a working surface bottom plate or top plate by adopting an amplitude-frequency-electricity penetration technology, and determining the specific position and range of the buried water guide structure; detecting whether a buried water guide structure exists below a tunnel bottom plate by adopting a direct-current depth measurement technology, and evaluating; and completely detecting whether buried water guide structures exist inside the working surface and on the bottom plate, the top plate and the periphery by adopting a transient electromagnetic detection technology. The three-dimensional detection method has the beneficial effects that true space detection is realized, the water inrush hidden trouble situation in the damage influence range of stoping on the working surface coal bed can be checked to the maximum extent, accidents are effectively avoided, and the life and property safety of people are ensured.

Description

technical field [0001] The invention relates to a detection method, in particular to a pre-mining three-dimensional detection method of a coal seam in a working face, and belongs to the technical field of coal seam pre-mining geophysical prospecting. Background technique [0002] The traditional pre-mining geophysical prospecting of the working face belongs to the narrow sense detection which takes the inside of the working face and the bottom of the working face as the main detection objects. It can only detect and evaluate whether there are hidden water-guiding structures and hidden water inrush hazards inside the working face and the bottom plate of the working face. It belongs to half-space detection and is a static detection based on the natural state of the working face before mining. There may be hidden water-conducting structures or water bodies in the area affected by the damage of the upper surface and surrounding rock formations, which may cause water inrush. [...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/12
CPCY02A90/30
Inventor 李玉宝孙吉益李智文崔焕玉赵立松王玺瑞武延辉李全明赵广淼周杰民郭培鹏
Owner HEBEI COAL SCI RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products