圆梁山隧道毛坝向斜段岩溶涌砂来源研究

Research the Flowing Grit Source of Yuanliangshan Tunnel in Maoba Syncline Region

在对圆梁山隧道毛坝向斜段岩溶地质条件分析的基础上,对不同构造部位及高程的溶洞沉积物进行分析,认为隧道揭露溶洞所富含的大量泥砂与岩溶发育旋回中遗留下的厚层夷平面沉积物有直接关系,这是当地封闭地质构造单元与地下水共同作用的结果.这种溶洞物质特征对比方法为今后预测深埋隧道溶洞沉积物质数量及物质组成提供了新的研究手段.

Through analyzing the characteristic of Maoba syncline karst exposed by the yuanliangshan tunnel and the sediments in the region and the exposed cave. It points that the sediment in the peneplain is the important source of the tunnel gushing sediment, which is the result of the unique structure, physiognomy and lithology in maoba syncline. The contrasting analysis of deposits in different karst cave is a new way in forecast the deposit character in deep cave.