区间分析方法在深部岩体工程中的应用

APPLICATION OF INTERVAL ANALYSIS METHODS TO SURROUNDING ROCK STABILITY OF DEEP ROADWAY ENGINEERING

在深部巷道围岩力学分析和稳定性设计时,由于信息的有限性,影响围岩稳定性的基本参数只能确定其数值范围,很难得到大量的数据样本,确定其分布函数或隶属函数就存在很大的困难。因此,把岩体和支护物理力学参数当作区间变量,采用区间分析方法研究围岩的力学状态,较好地解决了上述困难。并提出了一种区间模型计算程序及其在深部巷道分析中的应用,研究的工程实例也显示该方法具有较好的适应性。

In stability design and mechanical analysis of surrounding rock for deep roadway, it is difficult to get a great deal of data samples and its interval range can be determined easily for those basic data which affect the stability of surrounding rock because of limit of information. It is also very difficult to determine distribution function and membership function. Physical and mechanical parameters of rock mass and support are regarded as interval variables and interval math is used to analyze mechanical state of surrounding rock. Therefore, interval analysis method is introduced and interval math is regarded as a solution of above-mentioned problem in the paper. Physical and mechanical parameters are expressed through interval variables, and some response functions of surrounding rock, for example pressure equation, are expressed by interval models. An output of the interval model is an interval value. A calculation program that is used to solve interval model is suggested and applied to analyze surrounding rock of deep roadway. The engineering example shows that interval approach has good adaptability and bright future in deep rock mass engineering field.