重力坝深层抗滑稳定基本特点的初步分析

Preliminary Analysis About Basic Character of Deep Slide Stability of Gravity Dam

坝基具有缓倾角软弱结构面的重力坝的滑动问题是典型的深层滑动问题。对于深层滑动问题,虽已作过大量研究工作,但迄今为止,仍缺乏较为统一、合理、全面的认识,尚不能进行比较确切的定量分析。尽管如此,深层滑动还是具有一定的规律和特点,是可以被认识和掌握的。本文采用三倾斜面法.对影响深层滑动的重要因素作了大量计算和分析,初步揭示了有关重力坝深层抗滑稳定的基本特点。

The slide problem of gravity dam foundation with low dip weak seam is the typicaldeep slide problem and usually become the control problem of the dam slide resisting stabilitybecause of the low strength of the seam. A great amount of work had been done on the deepslide problem, but the reasonable, overall realization has not been achieved by far. However,deep slide has certain character which can be realized. With 'the Three Oblique Sliding PlanesMethod', a large amount of calculation and analysis are carried out to study the affection offactors of the rock foundation and the weak seam on the deep slide in this paper. The basiccharacter of the deep slide is achieved preliminarily.