高密度电法在柳州太阳村镇岩溶塌陷区调查中的应用研究

发布时间：2018-02-22 22:36

本文关键词： 岩溶塌陷高密度电法岩溶裂隙带断裂破碎带输油管道抽水机井太阳村镇柳州　出处：《地质与勘探》2017年01期 　论文类型：期刊论文

【摘要】：为了查明柳州太阳村镇岩溶塌陷形成的地质背景,本文采用高密度电法对该塌陷区进行调查研究。研究结果表明:高密度电法对于确定土层的厚度,区分土层和岩石的分界面具有较好的效果,通过电阻率的分布及变化趋势,可以较好的圈定地下岩溶裂隙带的发育位置,结合地质资料,对识别断裂破碎带也有较好的效果。三个塌陷区的致塌地质背景不尽相同:第Ⅰ,Ⅲ塌陷区塌陷的形成与人类活动密切相关,分别由机井抽水及输油管道铺设引发;第Ⅱ塌陷区塌陷的形成与自然因素相关,由断裂破碎带触发。通过高密度电法反演结果断面图,能较准确地查明塌陷的潜伏隐患区:第Ⅰ塌陷区的隐伏区为通过抽水井的近东西向的岩溶裂隙带,第Ⅱ塌陷区地质灾害的潜伏区为断层西侧的岩溶裂隙带,第Ⅲ塌陷区的隐患区为输油管道附近东侧的岩溶裂隙带,均位于人类活动频繁附近地段及构造发育带。
[Abstract]:In order to find out the geological background of karst collapse in Yangcun Town, Liuzhou City, this paper investigates and studies the collapse area by means of high-density electric method. The results show that the thickness of soil layer is determined by high-density electrical method. Through the distribution and variation trend of resistivity, the development position of underground karst fracture zone can be well delineated, combined with geological data. The collapse geological background of the three collapse areas is different: the formation of collapse in the first and third collapses is closely related to human activities, which is caused by pumping water from machine wells and laying oil pipelines, respectively; The formation of the collapse in the second subsidence area is related to natural factors, which is triggered by the fracture zone. The potential potential area of collapse can be accurately identified: the hidden area of the first subsidence area is the karst fissure zone near the east-west direction through the pumping well, and the latent area of the geological hazard in the second subsidence area is the karst fissure zone on the west side of the fault. The hidden danger zone in the third subsidence area is the karst fissure zone in the east of the oil pipeline, which is located near the area of frequent human activities and tectonic development zone.
【作者单位】：中国地质科学院岩溶地质研究所;国土资源部广西岩溶动力学重点实验室;
【基金】：中国地质调查局地质调查项目(编号:1212371213031);中国地质调查局地质调查项目(DD20160300) 中国地质科学院院控基金项目(YYWF201643)联合资助
【分类号】：P631.3;P642.25

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