井间地震层析成像技术在采空区及其覆岩结构探测中的应用

Application of Crosswell Seismic Tomography Technology in Goaf and Overlying Strata Structure Probing

查清采空区及其覆岩现状是对采空区进行稳定性评估和治理的基础和关键的工作。以淮北某矿老采空区为例,应用井间地震对拟建场地的采空区及其覆岩现状进行探测,根据探测结果分析了采空区及其覆岩结构类型,基本查明了完整岩层、破碎岩层和较完整岩层的层位和范围,为采空区稳定性评估和治理提供了基础资料和依据。

Investigation results of goaf scope and overlying strata structure is the key and foundation work of goaf stability evaluation and treatment. The goaf scope and overlying strata structures under planning construction site were surveyed with cross well seismic tomography,based on old goaf of one coal mine in Huaibei,the paper analyzed the goaf scope and overlying strata structures according investigation results,and then identified the position and scope of integrity strata,broken strata and defective strata,it provided basic materials and evidences for goaf stability evaluation and treatment.