A method for advanced detection of faults in coal roadways based on reflected channel wave signals
A technology of reflecting channel waves and advanced detection, which is applied in the direction of measuring devices, geophysical measurements, instruments, etc., can solve the problems of long construction time and many follow-up processing steps, and achieve the effect of low cost, easy operation and accurate results
Inactive Publication Date: 2015-09-09
CHINA UNIV OF MINING & TECH
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[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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[0023] In the figure, the steps of the coal roadway advanced fault detection method based on reflected channel wave signals are as follows:
[0024] (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#, and 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 arrangement of the observation system is as follows figure 1 , the direction to the right in the figure is the excavation direction;
[0025] (2) According to the order of seismic wave propagation time, the direct wave and fault reflection channel wave seismic signal area of 1#-6# receiver point can be obtained in the seismic record, such as figure 2 shown;
[0026] (3) The time t corresponding to searching for the maximum amplitude value fr...
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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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IPC IPC(8): G01V1/00
Inventor王勃刘盛东黄兰英张夏阳余森林路拓章俊
OwnerCHINA UNIV OF MINING & TECH