摘要
安六铁路六枝—冷坝段沿长江水系与珠江水系分水岭行进,线路总长37.47 km,受区域特殊地质地貌及区域丰沛降水的影响,沿山间冲沟区岩溶强烈发育,地下发育串珠状溶洞及溶蚀破碎带。从工程地质特征和水文地质特征2个方面研究地质发育机理,开展工程地质及水文地质调查。查明岩溶发育情况,认为桥梁桩基穿越串珠状溶洞及溶蚀破碎带施工风险很大。为降低岩溶施工风险,减少岩溶地质灾害,提出线路绕避、桥梁跨域岩溶强烈发育区的防灾减灾方案,以保障铁路运输安全。
The Liuzhi-Lengba section of the Anshun-Liupanshui Railway, 37.47 km in length, runs along the watershed of the Yangtze River and the Pearl River water systems. Under the influence of regional special geology and geomorphology and regional abundant precipitation, the karst in intermountain gully area develops strongly, and beaded karst caves and dissolution and fracture zones are developed underground. It studies its geological mechanism from two aspects: engineering geological characteristics and hydrogeological characteristics. It carried out engineering geological and hydrogeological investigations. After detailed geological surveys, it ascertained the karst development and analyzed the construction risks of bridge pile foundations passing through beaded caves and erosion fracture zones. In order to reduce the risk of karst construction and reduce karst geological disasters, it is proposed that the line avoidance and bridge cross-domain karst strong development area should be prevented and reduced to ensure the safety of railway operations.
作者
周关学
张广泽
付开隆
ZHOU Guanxue;ZHANG Guangze;FU Kailong
出处
《铁道技术监督》
2020年第9期52-54,58,共4页
Railway Quality Control
关键词
安六铁路
岩溶区
桥梁桩基
建设风险
Anshun-Liupanshui Railway
Karst Area
Bridge Pile Foundation
Risk Construction
