西南某电站右岸倾坡内夹泥裂隙成因探讨

A DISCUSSION ON THE FORMATION MECHANISM OF INWARDS-DIPPING MUD-FILLED FRACTURE ON THE RIGHT BANK OF A DAMESITE IN SOUTHWEST OF CHINA

西南某拟建大型水电站的右岸岩体中存在倾向坡内的夹泥裂隙 ,通过对其的发育情况以及所处的地质环境进行系统的研究和认真剖析 ,认为该区内的倾坡内夹泥裂隙的成因并非正常卸荷引起 ,而是在构造的基础上 ,穹隆挽近期隆起的结果 ,为右岸坝肩稳定性评价提供了可靠的依据。

In this paper the genetic mechanism of the inwards-dipping mud-filled fractures on the right slope of a damsite in southwest of China was discussed with systematic analysis. The formation of the mud-filled fractures dipping inwards did not result from the normal stress release effect of the river valley, but mainly from the uplift of vault structure according to geologic structure. The analysis provides the basis for the stability evaluation of the dam abutment.