Method for detecting radial water cut abnormal body in underground coal mine drilled hole

A detection method and abnormal body technology, applied in the direction of electric/magnetic detection for logging records, etc., can solve the problems of high density, time-consuming and high cost, and achieve the goal of reducing the layout density and expanding the radial control range Effect

Active Publication Date: 2014-10-08
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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Problems solved by technology

Because coal mine excavation needs to drill a large number of advanced water-exploration drilling holes, in order to control the range of water

Method used

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  • Method for detecting radial water cut abnormal body in underground coal mine drilled hole

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Embodiment Construction

[0021] see figure 1 , shows a schematic diagram of the method for detecting radial water-bearing anomalies in coal mine underground boreholes according to the present invention.

[0022] The method for detecting radial water-bearing anomalies in underground coal mine boreholes mainly includes the following steps:

[0023] Step 1: drill a detection hole 15 in the underground roadway 11 for the stratum to be detected, and set a transmitting wire frame 14 at the opening position of the detection hole 15, and a transmitting and receiving device is arranged behind the transmitting wire frame 14, and the The transmitting and receiving device may include a signal transmitting component 13 and a signal receiving component 12, and the signal transmitting component 13 is connected to the transmitting wire frame 14 to transmit a signal through the transmitting wire frame, and the transmitting and receiving device may also include a high-performance embedded CPU to quickly process the co...

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Abstract

A method for detecting a radial water cut abnormal body in an underground coal mine drilled hole comprises the following steps that firstly, a detection hole is drilled in a roadway under the shaft , an emission wire frame is arranged at the position of a hole opening of the detection hole, and an emission receiving device is arranged; secondly, a three-component receiving probe in the detection hole is fixed in a plurality of design measuring points according to the same angle, and meanwhile an inclination measuring device is utilized for recording direction angles, inclined angles and transverse rolling angles of the positions of the measuring points; thirdly, measuring information of all measuring points is respectively recorded, and an abnormal response is judged; fourthly, the position of an emission device is moved, or the angle of the emission device is changed, and the second step and the third step are repeated; fifthly, collected data are processed, and information of the position of the low-resistance abnormal body around the drilled hole is obtained. According to the method, the positioning function of the low-resistance abnormal body in the radial direction of the drilled hole can be provided, the control range of the drilled hole is expanded, the head-on advanced detection precision of the roadway is enhanced, a water contained construction object existing possibly can be pointed out, and the next-step drilling direction can be pointed out.

Description

technical field [0001] The invention relates to the technical field of physical exploration of coal mine mining, in particular to a method for detecting radial water-containing abnormal bodies in underground coal mine boreholes using artificial source time-domain electromagnetic induction in underground mine boreholes. Background technique [0002] At present, with the continuous increase of coal mine mining depth, the advanced detection of water-bearing structures is of great significance to the safe production of coal mines. Because coal mine excavation needs to drill a large number of advanced water exploration drilling holes, in order to control the range of water-bearing structures, the density of water exploration holes is very high, sometimes as many as 20 or more, which takes a lot of time and cost. [0003] The artificial source time-domain electromagnetic induction method uses ungrounded loops or ground electrodes to send pulsed or square wave primary electromagnet...

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Application Information

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IPC IPC(8): G01V3/26
Inventor 范涛王继矿赵兆赵睿刘磊宁殿艳石显新鲁晶津张仲礼
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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