顺层滑坡动态评价的新方法——微构造方法探索

THE NEW METHOD OF DYNAMIC EVALUATION OF CONSEQUENT LANDSLIDE——INVESTIGATION ON MICRO-STRUCTURE METHED SEEKING

本文遵循从宏观深入到微观的研究途径来探讨有关滑坡灾害问题.一方面对目前国内一重大工程中存在的滑坡动态现状给予定量评价.另一方面以此为具体研究实例,较系统地从基本观点、基本原理、运用程序以及试验观测技术等方面,初步探索出一种对以顺层滑动为基本模式的滑坡动态进行评价的定量方法——微构造方法.

The authors presents some preliminary results through their research works upon the micro-structure, including the micro-crack in the slope rockmass of the Jinlong shan at the Ertan reservoir in Sichuan province.It is not only of significance upon the exploration of micro-structure method as a new way for researching but also of great significance in practice for evaluating the Jinlongshan rockslope.Based on the full analyses of the data obtained from the examination upon the micro-structure especially upon the micro-cracks of a lot of rock samples adapted from the soft strata, the authors conclude that active trend of Jinlongshan rockslope is controlled by the soft strata by which the slop composed. The authors find some evidences to show the relationship between micro-structure and the behavior of the strata that can be expressed in terms of micro-cracks feature parcmeters, and then a quantitative relationship expression tries to be suggested. The positive result shows that the micro-crack is more sensitive than micro-structure in exhibiting the active trend of the soft strata, so the micro-structure method as a way to evaluate or to forecast the activity of rockmass may be more significant.This paper also presents some skills of the method for micro-cracks examination.