中国岩溶2017，Vol.36Issue(6)：808-818,11.DOI:10.11932/karst2017y59
广西来宾市良江镇吉利村岩溶塌陷成因机制分析
Mechanism analysis of sinkholes formation at Jili village, Laibin City,Guangxi,China
摘要
Abstract
After an extreme rainstorm event in June 2010,17 sinkholes emerged at Jili village,Laibin City, Guangxi in a month.The impact area occupied more than 1,500 m2.Three of the sinkholes expanded and merged gradually and eventually developed into a large sinkhole which is 170 m long and 38 m deep.It is the largest sinkholes in Guangxi.In order to understand the formation mechanism,extensive investigations in-cluding field investigation,three-dimensional laser measurement,geophysical prospecting,exploratory bore-holes and real-time monitoring of karst water pressure and rainfall were conducted.The results indicated that sinkholes at Jili village were attributed to natural factors,which is the result of multiple adverse factors. These factors mainly include the special"water-soil-rock"combination and extreme rainstorm.The special geological conditions determine the particularity of the sinkholes.Analyzing the formation process and mech-anism of the sinkholes,we think they were mainly controlled by the combination of gas explosion effect,wa-ter hammer effect and seepage erosion effect.关键词
岩溶塌陷/影响因素/成因机制/极端暴雨Key words
sinkhole/influencing factor/formation mechanism/extreme rainstorm event分类
天文与地球科学引用本文复制引用
戴建玲,罗伟权,吴远斌,蒋小珍..广西来宾市良江镇吉利村岩溶塌陷成因机制分析[J].中国岩溶,2017,36(6):808-818,11.基金项目
国家自然科学基金项目(41472298) （41472298）
中国地质调查项目(1212011220191、DD20160254) （1212011220191、DD20160254）
国土资源部公益专项(201211083) （201211083）
