【摘要】 利用采区三维地震勘探,全面系统地分析了随工作面推进采场覆岩采动裂隙的动态地震波场响应特征.通过三维数据体的纵、横向剖面分析以及采用对比解释法,研究了采空区、支撑压力区、采动影响带的地震波场响应特征,根据这些特征可以划分采空区范围、采动裂隙发育高度、裂隙"天窗"、采动影响范围.实践证明:利用三维地震技术进行覆岩采动裂隙的探测,技术上是完全可行的,探测效果明显.更多还原

【Abstract】 In this paper,we analyze the response characteristics of dynamic seismic wave field of mining-induced fractures in overburden to the advancement of working face by 3D seismic exploration.Having analyzed and interpreted the 3D data,we analyze the response characteristics of seismic wave field to the mined-out area,the pressured-supporting area,and mining affected area of both longitudinal and horizontal profiles.According to these features mined-out area,the depth of mining-induced fractures,fissure ’marriage’,and the mining inducing range can be divided.The results show that this technology completely technically feasible in detecting deformation of overburden and failure by 3D seismic exploration technique.更多还原