三峡右岸换流站泥质砂岩洞穴成因分析

岩石中的洞穴主要分布于以碳酸盐为主的可溶性岩石中。但在泥质砂岩中发现天然洞穴则比较少见,在建设三峡右岸换流站时就发现了泥质砂岩中的天然洞穴,给勘探、施工造成了许多不便。本文收集了工程勘探、施工中的一些资料,分析了其分布规律及其成因,并提出了溶蚀洞穴不仅产生于碳酸盐类岩层中,在一定条件下,砂岩也会产生溶蚀洞穴的观点,与同行探讨。

Formation Analysis of Silty Sand Stone Cave in the Current Converter Station on the Right Bank of Three-Gorge

The cave in the rock mainly is distributed in regard carbonate as principle of in the dissolubility rock,this is already accepted by the domestic and international rock soil engineering field generally.However,it is then more seldom seen in the earth sandstone that the natural cave is discovered;the natural cave that is discovered in the change flow stand of the Right bank of Yangtse gorges during the investigating and measuring results in many inconvenienceon to the Investigation and Construction.In this article,the author collects certain data during the engineering investigating and construction,carry on the summary research,analyze it distributes regulation and its reasons,and put forward to dissolve the eclipse cave to not only produce in the carbonate rock strata,but also under the certain condition,sandstone will produce the standpoint of dissolve the eclipse cave,inquiry into the problem with expert's scholar.