桂西北山区某隧道群隧区岩溶发育规律研究  

Study on the Karst Development Law of the Tunnel Group in the Srea of Mountains Northwest Guangxi

作　　者：王存德[1] 冯君[1] 李沧海[1] 

机构地区：[1]中铁二院工程集团有限责任公司,四川成都610031

出　　处：《四川建材》2017年第4期94-96,共3页Sichuan Building Materials

摘　　要：桂西北山区隧道群隧区的岩溶类型主要为连片峰丛洼地、落水洞及消溢洪洞、溶洞、暗河。本文分别从隧区的地形地貌、地质构造、地层岩性及地下水四方面阐释了岩溶形态发育的成因,并分析了各地质因素对其发育规律的控制作用。研究结果表明:区内属侵蚀-溶蚀作用形成的连片低峰丛深洼地地貌,同时区域构造控制了岩溶发育的主要方向;可溶岩广布且地下水发育使隧区形成导水性好的岩溶管道;包气带厚度大、垂直方向岩溶强烈发育。研究成果对类似实际工程具有重要的理论指导意义。The types of karst ofmountain tunnel in north - west-Guangxi are mainly for continuous peak cluster depression, ponor and spillway tunnel elimination, karst caves and underground rivers. It explained the the causes of formation of karst morpho-logical development and analyses the geological factors on the de-velopment pattern of control function from four aspects, which contained the tunnel area topography and geomorphology, geolog-ical structure, stratum lithology and groundwater. The results showed that the zone was formed by the erosion - corrosion shall slack plexus deep depression physiognomy. At the same time, the regional tectonic control of karst development main direction ; The good karst conduit was formed because of thedissoluble rock widely distributedand the groundwater development; For the va- dose zone thickness, the vertical karst development strongly. The research has important theoretical guiding significance to the sim-ilar engineering.

关 键 词：桂西北山区 岩溶 发育规律 

分 类 号：TU443[建筑科学—岩土工程]