反射槽波探测陷落柱正演模拟及应用研究

在陷落柱发育矿井工作面设计阶段,需要利用现有一条巷道预先探测将要布置工作面的陷落柱情况,反射槽波法可以对巷道两侧一定尺度及位置的陷落柱进行探测.通过建立正演模型,采用数值模拟方法,研究反射槽波探测陷落柱的分辨能力,分析反射槽波准确探测陷落柱的影响因素,指导实际槽波资料的采集、处理与解释.研究表明,通过正演模拟反射槽波对...

Forward modeling and application of reflection trough wave detection collapse column

In the design stage of the mining face with the development of the collapse column，it is necessary to use the existing roadway to detect the situation of the collapse column in the working face to be arranged in advance.The reflection groove wave method can detect the falling column with certain scale and position on both sides of the roadway.Through the establishment of forward model and numerical simulation method，the resolution of reflected trough wave detecting subsided column is studied，and the influencing factors of accurately detecting subsided column by reflected trough wave are analyzed，so as to guide the collection，processing and interpretation of actual trough wave data.The research shows that through forward simulation of reflected trough wave on parameters such as collapse column diameter，different lanes，shot spacing and distance from roadway，the shot spacing of infill lane can detect the collapse column side boundary with long axis diameter of 10 m and distance from roadway of 100 m.10 m offset and 5 m track distance are the best observation system in the practical application of detecting subsided column with reflected trough wave.The reflected trough wave provides a reliable geological guarantee for the layout of working face，and there are many factors affecting the detection accuracy.The accuracy can be improved by densifying the observation system and the diffraction wave migration algorithm.The research results can provide technical reference for the layout of working face and roadway development in the mine with developed collapse column.