山东荆泉断块区覆盖型岩溶塌陷控制因素和影响因素分析  

Analysis on factors controlling and influencing overburden karst collapse in Jingquan fault block,Shandong Province

作　　者：冯亚伟 李志峰 仝路 曾斌[3] FENG Yawei;LI Zhifeng;TONG Lu;ZENG Bin(Shandong Lunan Geological Engineering Investigation Institute(Second Geological Brigade of Shandong Geological Survey Bureau),Yanzhou, Shandong 272100,China;Key Laboratory of Karst Geology of Shandong Bureau of Geology and Mining, Yanzhou, Shandong 272100,China;School of Environmental Studies,China University of Geosciences,Wuhan, Hubei 430074,China)

机构地区：[1]山东省鲁南地质工程勘察院(山东省地勘局第二地质大队),山东兖州272100 [2]山东省地矿局岩溶地质重点实验室,山东兖州272100 [3]中国地质大学(武汉)环境学院,湖北武汉430074

出　　处：《中国地质灾害与防治学报》2020年第3期73-82,共10页The Chinese Journal of Geological Hazard and Control

基　　金：山东省自然资源厅《山东省岩溶发育区地质环境调查》(鲁地环(2018)06号);山东省自然资源厅《山东省地下水水源地调查评价(鲁西南)》(鲁地环(2016)02号)。

摘　　要：截至2018年底,山东荆泉断块研究区内先后发生岩溶塌陷58起,给当地的生产生活带来了极大的安全隐患。本文结合研究区基础地质条件、地下水动态监测、地球物理勘探及水文地质钻探等资料,对荆泉断块区内覆盖型岩溶塌陷的主要控制因素和影响因素进行了分析。研究发现:区内岩溶塌陷主要分布在多层土层结构区,土层厚度基本介于0~15 m且含有砂层;岩溶塌陷多沿构造或构造影响带分布,断层两侧1000 m内为岩溶塌陷高发区;降雨对地下水动力条件的改变是诱发岩溶塌陷的重要环境影响因素之一;人类活动对岩溶塌陷的影响则主要表现在岩溶水的大量开采及地表大型工程的修建等。亟需采取措施降低区内岩溶塌陷再次发生的概率。Up to the end of 2018,58 karst collapses occurred successively in Jingquan fault block research area,Shandong Province,which brought great potential safety hazard to local production and life.Based on the basic geological conditions,groundwater dynamic monitoring,geophysical exploration and hydrogeological drilling data,the main inducing factors of overburden karst collapse in Jingquan fault block area are analyzed.It is found that karst collapse mainly distributes in multi-layered soil structure area,and the thickness of soil layer is between 0 and 15 m and contains sand layer;karst collapse distributes along structural or tectonic influencing zone,and karst collapse occurs frequently within 1000 m on both sides of faults;the change of groundwater dynamic condition caused by rainfall is one of the important environmental factors that induce karst collapse;and human activities influence karst collapse.The impact of human activities is mainly manifested in the large-scale exploitation of karst water and the construction of large-scale surface projects.Measures are urgently needed to reduce the probability of recurrence of karst collapse in the area.

关 键 词：荆泉断块 岩溶水 岩溶塌陷 诱发因素 

分 类 号：P642.25[天文地球—工程地质学]