大型复杂岩溶场地施工勘察方法的研究  

Study on Construction Investigation Methods in Large-scale Complex Karst Site

作　　者：谢春庆[1] 李天华[1] 廖崇高[1] 

机构地区：[1]成都军区空军勘察设计院,成都市610041

出　　处：《勘察科学技术》2013年第3期25-28,共4页Site Investigation Science and Technology

摘　　要：该文介绍了某大型复杂岩溶场地,选择典型地段采用高密度电法、人工跑极的高密度电测深法、浅层地震、面波法、地质雷达等物探方法进行探测。经钻探和爆破开挖验证,结果表明:挖方整平区在15m深度内地质雷达探测效果较好,受施工影响最小,可在大型复杂岩溶场地施工勘察中推广应用。在溶蚀破碎带上,物探和钻探方法有时将密集发育、结构稳定的溶隙、小溶洞区域可能误判为大溶洞,在勘察中应引起注意。In the article, several geophysical methods such as high density resistivity method, artificial ran high density electrical method, shallow seismic refraction method, surface wave method, geological radar are adopted in the typical area of large-scale complex karst site. Through the drilling and blasting excavation verified, the results show that, geological radar detection has the better effect within 15 m depth in excavation leveling area, which has little effect on construction, and it can be widely popularized and applied in the construction investigation of large-scale complex karst area; In the karst fracture zone, the solution crack with intensive development and stable structure and small cave areas were always mis- taken for large water-eroded caves by geophysical exploration and drilling method, so we should pay at- tention to these phenomena in construction investigation.

关 键 词：复杂岩溶场地 溶蚀破碎带 施工勘察 地质雷达 

分 类 号：TU195[建筑科学—建筑理论]