地震技术在隧道工程勘查中的应用

Application of Seismic Prospecting Technology in Tunnel Engineering Investigation

以折射波法及反射波法介绍了地震勘探技术在石柱槽隧道及大桠隧道探测断裂破碎带、断层中的应用情况,包括观测系统、处理方法及解释依据。结果表明地震技术在隧道工程勘查中具有良好的应用效果。实例说明,在隧道工程勘探中,因地震波能量衰减较快,除了选择合适的地震勘探方法、观测系统及工作参数外,还应特别注意选择较小的偏移距及道距。

Introduced seismic refraction and reflection prospecting applications in Shizhucao and Daya tunnels to detect faults and shattered fault zones including field setup, processing method and interpretation basis. The result indicated that the seismic prospecting technology has good applicable effects in tunnel engineering investigation. Case studies demonstrated that in tunnel engineering investigations, because of tantivy seismic wave energy attenuation, besides appropriate seismic prospecting method, field setup and operational parameters, special attention should be paid to the selection of smaller offsets and group intervals.