论文部分内容阅读
在隧道工程及边坡开挖中,经常遇到地质结构面普遍分布的“块状岩体”。这类岩体的坍塌通常是从出露在临空面的某些岩块的滑塌开始的。如何根据地质结构面的产状找出滑塌块体在临空面上的出露规律,这就是块状岩体稳定分析中的遍有节理问题。本文就遍有节理问题运用石根华氏关于滑塌块体构成条件的结论,介绍一种确定滑塌块体出露情况的解析方法,并给出了列表计算格式。运用本文所介绍的方法,对于块状围岩可以根据对岩体结构面的地质调查,预测各种滑塌块体的出露部位、范围及稳定系数,据以设计隧道围岩支护系统,选择合理的洞轴方向和边坡坡度,俾使避免坍塌。对此,文中并给出了相应的算例。
In tunnel engineering and slope excavation, we often encounter “massive rock mass” that is generally distributed in geological structure. The collapse of such rock mass usually begins with the slump of some of the rock mass exposed in the gondola. How to find out the rule of the collapse of slump mass on the surface of the free zone according to the shape of the geological structure surface is the problem of mass joint in the stability analysis of the mass rock mass. This paper applies Shi Genhua ’s conclusion on the condition of the formation of the slump mass over the joint problem, introduces an analytical method to determine the occurrence of the slump mass, and presents the list calculation format. Using the method described in this paper, the surrounding rock mass can be used to predict the exposed parts, range and stability coefficient of various slump blocks according to the geological survey of the rock mass structural plane, so as to design the tunnel surrounding rock support system, Choose a reasonable hole axis direction and slope slope, so as to avoid collapse. In this regard, the article gives the corresponding examples.