A coal roadway advance forecast and collection device

Abstract

A coal roadway advance forecast acquisition device, including a source mechanism, a detection mechanism and a support mechanism, wherein: the source mechanism is used to send a source wave, and the detection mechanism is used to detect the echo signal of the source wave sent by the source mechanism, The support mechanism is used to support the detection mechanism; both the seismic source mechanism and the detection mechanism are installed on the support mechanism. The present invention is suitable for the collection of advance forecasts of tunnel coal roadways, and the present invention makes up for the true three-dimensional The gap in the three-component seismic detection instrument for advanced geological prediction can realize the three-dimensional multi-component seismic data acquisition of non-anomalous bodies such as fractured and fault-developed areas in front of the working face, karst areas, and gas-enriched areas; it reduces the artificial detection period of conventional roadway advance prediction. , high cost, great impact on construction progress, and poor data consistency.

Description

technical field [0001] The invention belongs to the technical field of mine roadway construction, in particular to a coal roadway advance forecast collection device. Background technique [0002] Mine roadway construction is a hidden high-risk underground construction project. In recent years, with the continuous expansion of mining depth and mining scale in my country, various mine safety accidents have occurred frequently, causing huge economic losses and casualties. During the excavation process, it is easy to encounter unfavorable geological environments with complex structures such as areas with developed fractures and faults, karst areas, and gas-enriched areas. , it is easy to lead to roadway deformation, gas outburst, water inrush, roof collapse and other disaster accidents, which will have a huge impact on the safety of construction personnel and the construction process. location, lithological parameters, and geological structure. Rapid and accurate roadway advanced ...

AI Technical Summary

Problems solved by technology

[0003] The narrow space in the mine roadway imposes huge restrictions on the layout of the seismic detection and observation system and the shape and size of the detection instrument. The existing mine roadway advance prediction technology based on seismic exploration mostly adopts the receiving device arranged on the side wall of the roadway , the method of arranging excitation devices on the working face or the side wall of the roadway is used to carry out the advanced prediction of the geological body in front of the roadway working face, which is different from the conventional semi-space seismic detection on the surface. The reflection information received on the wall from the abnormal body in front of the working face is less, however, the reflection information received on the working face from the abnormal body in front of the working face is more, and the receiving instruments at this stage are mostly designed for the side wall of the roadway. There is no reflection signal receiving device specially for receiving information at the working face; secondly, the roadway working face has special conditions such as high gas, which requires the seismic source to have explosion-proof performance. Tunnel seismic prediction (TSP) technology mostly uses a small-dose explosive source to excite seismic waves , there are certain potential safety hazards. True Reflection Tomography (TRT) technology uses artificial hammering on the source to excite the source. Compared with the explosive source, the safety hazard of the hammering source is lower. However, the artificial hammering excitation energy is low and the consistency is poor. It will affect the detection depth and detection accuracy; thirdly, the existing advance prediction of roadways based on seismic detection often requires artificially arranging boreholes with a certain depth, so as to bury receiving devices and excitation devices to realize signal acquisition. The construction of this process is cumbersome. Low repeatability, low impact on the roadway construction process, and high cost; therefore, there is an urgent need for a roadway advance prediction earthquake detection instrument that is fast in layout, convenient in construction, high in repeatability, and low in cost

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