摘要
人类工程活动是武汉市岩溶塌陷形成的重要诱因。以武汉市洪山区毛坦港某小区岩溶塌陷为例,分析其形成条件及形成机制,提出相应的防治对策。研究认为,该岩溶塌陷形成于下伏碳酸盐岩中岩溶发育且上覆盖层具“上黏下砂”二元结构的区域,属岩层顶板破坏—垂直渗压致塌模式的产物。对于该类岩溶塌陷,建议重点采取钻探前合理布孔、钻探中加强护壁与监测、钻探后及时封孔等措施。
Human engineering activities are important incentive for the formation of urban karst collapse.Taking Maotangang karst collapse of in Hongshan District of Wuhan City as an example,the formation conditions and formation mechanism are analyzed,and the corresponding prevention and control measures are put forward.The research shows that this karst collapse is formed in the area where the underlying carbonatite is developed in karst and the upper cover layer has a binary structure of‘upper clay and lower sand’,which is the product of the roof failure-vertical seepage collapse model.For this kind of karst collapse,it is suggested to focus on reasonable hole layout before drilling,strengthening wall protection and monitoring in drilling,and timely sealing after drilling.
作者
李慧娟
陈梦源
梁川
涂婧
Li Huijuan;Chen Mengyuan;Liang Chuan;Tu Jing(Hubei Geological Environment Station,Wuhan,Hubei 430034)
出处
《资源环境与工程》
2022年第2期193-197,共5页
Resources Environment & Engineering
基金
武汉市多要素城市地质调查示范项目“岩溶地面塌陷调查一期”(WHYS-2018-001)。
关键词
岩溶塌陷
钻探
形成机制
致塌模式
长江一级阶地
karst collapse
drilling
formation mechanism
collapse-forming model
first terrace of Yangtze River
