利用瞬态面波运动学特征探测地下障碍物的研究与实践

Research and practice on detecting underground obstacles using the kinematic features of transient surface wave

城市工程物探中的面波勘探主要以多道瞬态面波的速度探测为主,在实际应用中常遇到地表条件复杂、作业时效要求高的情况,限制了该方法适用性。本文通过对瞬态面波传播机理的深入分析,全面总结了瞬态面波在运动学方面的特征,对如何运用这些特征开展地下障碍物快速探测提出了新的认识。在工程实践中,改进优化的探测技术与作业流程取得了显著的工程效果,切实提高了瞬态面波在城市地下障碍物探测的运用范围和时效。

Surface wave exploration in urban engineering geophysical exploration is mainly based on velocity detection of multi-channel transient surface waves.In practical application,complex surface conditions and high operation time requirements often occur,which limits the applicability of this method.Based on the in-depth analysis of the propagation mechanism of the transient surface waves,this paper summarizes the kinematic characteristics of the transient surface waves,and puts forward a new understanding of how to use these characteristics to rapidly detect underground obstacles.In engineering practice,the improved and optimized detection technology and operation process have achieved remarkable engineering results,and effectively improved the application range and time-efficiency of the transient surface wave detection in urban underground obstacles..