岩石工程破坏准则

CRITERION FOR ROCK PROJECT FAILURE

煤矿生产中大量的地下岩石工程都在围岩破坏和破坏发展中维护，经常的情况是围岩破坏了，工程却仍处于正常使用状态。本文引出了岩石破坏与岩石工程破坏两个不同的概念，岩石破坏是一种与其某种利用性质改变或消失对应的力学状态，而岩石工程破坏是一种与其某种使用功能改变或消失对应的工程状态。岩石工程破坏的直接原因是工程周围岩石的破坏，确定标准是其使用功能允许改变的极限。对应于岩石工程破坏，存在相应的周围岩石破坏状态，对这种岩石破坏状态的简单力学描述或表达式就是本文介绍的岩石工程破坏准则。岩石工程破坏准则的研究是将岩石力学研究与岩石工程问题相连系的最佳途径。

A great number of underground rock projects are maintained in production of coal mines in process of rock failure and development of failure.Normally the rock fails, but the project is still in normal working condition.Based on this, the paper introduces two different concepts, i. e. , rock failure and rock project failure.Rock failure is a mechanical state which represents change or elimination of one or several utilizable features.And rock project failure is state of a project, which represents change or elimination of one or several useful functions. The direct reason of a rock project failure is rock failure. The determinate criterion is the limit allowable for change of its function. There is a rock failure state which corresponds to rock project failure. A simple description or expression of rock failure state is the criterion for evaluation of rock project failure. The study of rock project criterion is the most optimal approach which combines research of rock mechanics with rock project problems.