探地雷达对采煤工作面顶底板复杂构造探测研究

Study on Application of GPR to Detection of Complex Structure of Roof and Floor in Coal Face

基于时域有限差分法模拟了探地雷达信号对采煤工作面顶、底板中可能存在的空洞、陷落柱、富水区、溶洞以及断层等复杂构造的响应特征,并结合实际物理模型,论证了利用探地雷达探测采煤工作面中各种复杂构造的可行性。通过在实验场地的探测实践,以及采用合理的雷达数据处理方法,确定了采煤工作面中的各种复杂构造的所在位置,探测结果与物理模型大体一致,取得了较好的地质效果。

Based on the finite difference time domain method, the response characteristics of GPR signals to complex structures are simulated,such as hole, collapse column, rich water area, karst cave and fault in the roof and floor of coal face. Combined with the actual physical models, the possibility of various complex structures in the application of GPR to the detection of coal face is proofed. Through the detection practice in the experimental site and the reasonable radar data processing method, the location of the various complex structures in the coal face is determined, and the detection result is basically the same with the physical model, which achieves good geological results.