徐州市区岩溶塌陷机理研究  

Study on Mechanism of Karst Collapses in Xuzhou City

作　　者：韩宝平[1] 马金荣[1] 裴宗平[1] 余志伟[1] 

机构地区：[1]徐州中国矿业大学资源与环境科学学院

出　　处：《中国矿业大学学报》1996年第3期33-37,共5页Journal of China University of Mining & Technology

基　　金：中国科学院工程地质力学开放实验室资助

摘　　要：研究了徐州市区岩溶塌陷的机理：岩溶洞穴的发育为塌陷提供了先决条件，强烈开采岩溶水导致其水位持续下降，独特的土层结构增强了潜蚀作用，促进了土洞的形成与发展．水位骤降导致土体失去浮托力，火车运行和建筑施工振动，导致土洞顶板失稳，是塌陷的触发性动因．This paper deals with mechanism of karst collapses in Xuzhou city. The authors suggest that cave in bedrock is a prerequisite of karst collapse. Continued declines of karst water-level caused by intensive pumpage and special structure of unconsolidated lays both strengthen the suffosion and promote development of cavity in unconsolidated layers. Sudden loss of buoyant support caused by rapid dropdown of karst water-level and vibration resulted from train past and building construction both contribute to trigger agents of the collapses.

关 键 词：岩溶塌陷 潜蚀作用 水位下降 震动 

分 类 号：P642.21[天文地球—工程地质学]