物探技术在采空区地灾勘查中的应用研究

Research on the application of geophysical exploration technology in gob disaster exploration

地下采空区具有隐伏、形态不均匀和性状不稳定等特点,经常造成地面塌陷等地质灾害的发生,给人们的生产、生活甚至生命财产安全造成了极大的破坏和威胁,很大程度上影响到经济发展和生态环境建设。豫西南某煤矿区域内,局部路面和部分房屋出现沉降、裂缝,为了解区内地质条件,寻找不稳定地质因素,查明引起沉降和裂缝的原因,对指定区域进行物探勘查,物探工作选用高密度电法和瞬变电磁法相结合的方式进行测量。实践证明,两种物探方法经济、高效、实用性强、成果可信,是采空区地灾调查的有效勘查手段。

Underground goafs are characterized by being concealed,irregular in shape,and unstable,which often causes geological disasters such as ground collapse.These disasters cause great damage and threat to people's production,life and even life and property safety,and severely affects economic development and ecological environment construction.In a coal mine area in southwest Henan Province,subsidence and cracks appeared on local pavement and some houses.In order to understand the geological conditions in the area,look for unstable geological factors and find out the causes of subsidence and cracks,geophysical exploration was carried out in the designated area,and the combination of high-density electrical method and transient electromagnetic method was used to measure the geophysical exploration.Practice has demonstrated that the two geophysical exploration methods are economical,efficient,practical and reliable,and are effective exploration means for goaf disaster investigation.