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Coal roadway fault advanced-detection method based on reflecting channel wave signals

A technology of reflecting channel waves and faults, which is applied to measuring devices, geophysical surveys, instruments, etc., can solve the problems of many follow-up processing steps and long construction time, and achieve the effect of low cost, easy operation, and less follow-up processing problems

Inactive Publication Date: 2013-08-07
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0004] In order to overcome the problems of long construction time and many follow-up processing steps in the existing coal mine fault detection method, the present invention provides a coal roadway advanced fault detection method based on reflected channel wave signal, which uses the kinematic characteristic information of reflected channel wave Advanced forecasting, easy operation, low cost, and less follow-up processing problems, can quickly obtain detection results, high detection efficiency, accurate results, and play a very good guiding role in on-site safe excavation

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  • Coal roadway fault advanced-detection method based on reflecting channel wave signals
  • Coal roadway fault advanced-detection method based on reflecting channel wave signals
  • Coal roadway fault advanced-detection method based on reflecting channel wave signals

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Embodiment Construction

[0022] In the figure, the steps of the coal roadway advanced fault detection method based on reflected channel wave signals are as follows:

[0023] (1) One X component sensor is arranged 0.5m in front of the coal roadway, as the 1# detection point, and then another five X component sensors are arranged at an interval of 0.5m forward, which are 2#, 3#, 4#, 5 #, 6# geophone points; a shot point is arranged 0.5m in front of 6# geophone point, and the seismic instruments arranged in the roadway can obtain seismic records. The specific layout of the observation system is as follows figure 1 , the direction to the right in the figure is the excavation direction;

[0024] (2) According to the time sequence of seismic wave propagation, the direct wave and fault reflection channel wave seismic signal area of ​​1#-6# receiver points can be determined in the seismic records, such as figure 2 shown;

[0025] (3) The time corresponding to the search for the maximum amplitude value from...

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Abstract

The invention relates to a coal roadway fault advanced-detection method based on reflecting channel wave signals. The coal roadway fault advanced-detection method includes arranging receiver points and shot points of 1 #, 2 #, 3 #, 4 #, 5 # and 6 # at the head-on front of the coal roadway sequentially, determining direct waves of 1 # to 6 # receiver points and fault reflecting channel wave seismic signal areas, finding out corresponding time of searching for a maximum amplitude value in 1 # to 6 # receiver point reflecting channel wave trains, drawing six arcs adopting the receiver points as centers, and acquiring the head-on front fault position as horizontal space among the intersecting positions of the six arcs and the head-on position. Reflecting channel wave kinematics characteristic information is used for advanced forecast, operation is easy, cost is low, subsequent processing problems are few, detection results can be acquired rapidly, detection efficiency is high, the results are accurate, and good guiding affection on safe on-site tunneling is realized.

Description

technical field [0001] The invention relates to a method for advanced detection of faults in coal mines, in particular to a method for advanced detection of faults in coal roadways based on reflected channel wave signals. Background technique [0002] The safety situation of coal mines in my country is still very serious. The coal and gas outburst accidents and mine water inrush accidents are the main mine disasters that cause mass death and injuries. These two major disaster sources are related to the geological structure of mines. Among them, faults are the most prominent geological structure. Therefore, it is predicted that Forecasting the fault in front of coal roadway plays a very important practical significance for safe excavation. At present, drilling is mainly used for advanced detection in coal roadways, but the efficiency of drilling construction is low and there is a limitation of one-hole view. If the construction is not done properly, it may lead to gas explosio...

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Application Information

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IPC IPC(8): G01V1/00
Inventor 刘盛东王勃黄兰英胡泽安杨真
Owner CHINA UNIV OF MINING & TECH
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