| 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 |
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| 引用本文： | 郑智杰.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[J].地质与勘探,2017,53(1):124-132. |
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| 作者姓名： | 郑智杰 |
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| 作者单位： | 中国地质科学院岩溶地质研究所,广西桂林541004;国土资源部广西岩溶动力学重点实验室,广西桂林 541004 |
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| 基金项目： | 中国地质调查局地质调查项目（编号：1212371213031）资助 |
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| 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。
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| 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 |
| 收稿时间： | 2016/5/22 0:00:00 |
| 修稿时间： | 2016/11/9 0:00:00 |
Application of high-density electrical resistivity imaging to karst collapse investigation at the Taiyangcun town, Liuzhou |
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| Zheng Zhi-jie.Application of high-density electrical resistivity imaging to karst collapse investigation at the Taiyangcun town, Liuzhou[J].Geology and Prospecting,2017,53(1):124-132. |
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| Authors: | Zheng Zhi-jie |
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| Abstract: | In order to clarify the geological background of karst collapse at the Taiyangcun town, Liuzhou, we conducted electrical resistivity imaging to investigate the collapse area. The results indicate that electrical resistivity imaging can preferably determine the thickness of soil layers, the interface between soil and rock, and the position of the karst fissure zones. Combined with geological data, it also has a better effect in the identification of fracture zones. It is found that the geological backgrounds of the three collapse areas are different. The first and third collapse areas are closely related to human activity, which are respectively induced by well pumping and oil pipelines. However, the geological background of the second collapse area is closely related to natural factors including the fracture zone. It can more accurately determine the latent hidden danger of collapse by electrical resistivity imaging inversion. Hidden areas in the first collapse area are nearby the EW karst fissure zone which contains pumping wells. Hidden areas in the second collapse area are the karst fissure zone on the west side of the fault. Hidden areas in the third collapse area are the near SN to EW karst fissure zones on the east side of the oil pipeline, which are all located in the vicinity of human activity and structure-rich zones. |
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| Keywords: | karst collapse electrical resistivity imaging karst fissure zone fracture zone oil pipeline pumping wells Taiyangcun Town Liuzhou |
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