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为实现金属矿山井下复杂环境的地质超前预报,通过分析与铁路隧道中超前探测的差异,建立基于TRT技术的井下超前预报基本程序,运用TRT6000系统,开展井下地质超前探测和预报。以铜坑矿为例,现场采用多点激发和多点接收,实现了三维空间反射层析成像,获得了较为全面的空间波场信息。根据该矿山井下6个有效探测点的数据分析和解译,获得了目标巷道前方有效距离30~150 m的三维成像结果,直观和量化地反映了工作面前方的破碎带、采场和塌落区的位置和范围,并将TRT探测结果与工程实际情况进行比较。最后分析TRT技术在地下矿山应用中存在的问题和注意事项。
In order to realize the geological advance prediction of complex underground metal mine environment, the basic procedure of downhole prediction based on TRT technology is established through the analysis of the differences with the advanced detection in railway tunnels. The TRT6000 system is used to carry out the advanced underground geological exploration and prediction. Taking Tongkeng mine as an example, multi-point excitation and multi-point receiving are adopted in the scene to realize the three-dimensional reflection tomography and obtain more comprehensive information of the spatial wave field. According to the data analysis and interpretation of 6 effective detection points in the mine, the 3D imaging results of the effective range of 30-150 m ahead of the target laneway are obtained, which visually and quantitatively reflect the broken zone, stope and slump in front of the working face The location and extent of the area, and compare the results of the TRT survey with those of the project. Finally, the problems and precautions of TRT technology in underground mine application are analyzed.