应用综合物探方法探测隐伏岩溶漏斗
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摘要
隐伏岩溶漏斗严重影响拟建工程的安全,对其开展针对性的勘察工作可为设计及施工提供科学依据。本文以水南特大桥8#墩勘察为例,介绍了采用地质雷达、高密度电法和浅层地震等3种方法探测隐伏岩溶漏斗的工作方法,查明了右幅8#墩岩溶漏斗的地表边界及基岩埋深变化特征,圈定了隐伏岩溶漏斗的范围和岩溶漏斗平面形态,取得了较好的探测效果,为桥基设计提供了指导性的基础资料。
Concealed karst cone has serious influence to the safety of proposed projects.It can provide scientific basis for design and construction to start a pointed perambulation of it.Taking the perambulation of Shuinante Bridge for example,this paper introduces three operating methods adopted to probe concealed karst cone,such as geological radar,high-density electrical method and shallow seismic,and finds out the surface boundary layer of the karst cone at 8th pier on the right and the variation characters of embedded depth of stone head.Meanwhile,it also delineates the extent of the concealed karst cone and the fiat shape of the karst cone.All these tasks have taken good explorative effects,and provide instructional initial values for abutment designs.
Concealed karst cone has serious influence to the safety of proposed projects.It can provide scientific basis for design and construction to start a pointed perambulation of it.Taking the perambulation of Shuinante Bridge for example,this paper introduces three operating methods adopted to probe concealed karst cone,such as geological radar,high-density electrical method and shallow seismic,and finds out the surface boundary layer of the karst cone at 8th pier on the right and the variation characters of embedded depth of stone head.Meanwhile,it also delineates the extent of the concealed karst cone and the fiat shape of the karst cone.All these tasks have taken good explorative effects,and provide instructional initial values for abutment designs.
引文
[1]曹伯勋.地貌学及第四纪地质学[M].武汉:中国地质大学出版社.
[2]王振东.浅层地震勘探应用技术[M].北京:地质出版社, 1988.
[3]李大心.探地雷达方法与应用[M].北京:地质出版社. 1994
[2]王振东.浅层地震勘探应用技术[M].北京:地质出版社, 1988.
[3]李大心.探地雷达方法与应用[M].北京:地质出版社. 1994
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