| 地裂缝分类及地面沉降区构造地裂缝防治对策 |
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| 引用本文： | 卢全中,李聪,刘聪,占洁伟. 地裂缝分类及地面沉降区构造地裂缝防治对策[J]. 地球科学与环境学报, 2021, 0(2): 366-375 |
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| 作者姓名： | 卢全中 李聪 刘聪 占洁伟 |
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| 作者单位： | 长安大学地质工程与测绘学院;长安大学西部矿产资源与地质工程教育部重点实验室;自然资源部陕西西安地裂缝与地面沉降野外科学观测研究站 |
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| 基金项目： | 国家自然科学基金项目(41877250);中国地质调查局地质调查项目(DD20160264);中央高校基本科研业务费专项资金项目(300102260401,300102268206,300102260402)。 |
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| 摘 要： | 地裂缝类型多样,灾害严重.根据主导因素及动力类型,将地裂缝分为构造地裂缝和非构造地裂缝两大类和16个类别;基于地裂缝的工程地质特征、水文地质特征和活动特征,认为地面沉降区构造地裂缝发生超常活动的本质原因是地裂缝错断了含水层,在过量抽取地下水时地裂缝两侧形成明显的水头差,产生不均匀压缩,从而导致地表发生较大的差异沉降;提...
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| 关 键 词： | 地裂缝 地面沉降 分类 防治 通水调压控裂法 定向钻井 差异沉降 含水层 |
Classification of Ground Fissures and Prevention Measures of Tectonic Ground Fissures in Land Subsidence Area |
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| LU Quan-zhong,LI Cong,LIU Cong,ZHAN Jie-wei. Classification of Ground Fissures and Prevention Measures of Tectonic Ground Fissures in Land Subsidence Area[J]. Journal of Earth Sciences and Environment, 2021, 0(2): 366-375 |
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| Authors: | LU Quan-zhong LI Cong LIU Cong ZHAN Jie-wei |
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| Affiliation: | (School of Geological Engineering and Geomatics,Chang'an University,Xi'an 710054,Shaanxi,China;Key Laboratory of Western China's Mineral Resources and Geological Engineering of Ministry of Education,Chang'an University,Xi'an 710054,Shaanxi,China;Field Scientific Observation and Research Station of Ground Fissure and Land Subsidence in Xi'an of Shaanxi,Ministry of Natural Resources,Xi'an 710054,Shaanxi,China) |
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| Abstract: | Ground fissures are of various types and cause serious disasters.According to the dominant factors and dynamic types,ground fissures are divided into two major categories(tectonic and non-tectonic)and 16 sub-categories.Based on the engineering geology,hydrogeology and activity characteristics of ground fissures,it is considered that the essential reason for the abnormal activity of tectonic ground fissures in land subsidence area is that ground fissures cut off the aquifer.Specifically,when excessive groundwater is extracted,obvious water head difference is formed on both sides of ground fissure and uneven compression is produced,which leads to large differential settlement on the surface.Therefore,the prevention and control method of CABHP for tectonic ground fissures in land subsidence area is put forward,which uses directional drilling to connect the miscut aquifer and balance the hydraulic pressure on both sides of ground fissure.The CABHP method can effectively control the activities of tectonic ground fissures in land subsidence area,and avoid a large amount of waste of land resources and disaster losses. |
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| Keywords: | ground fissure land subsidence classification prevention CABHP method directional drilling differential settlement aquifer |
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