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用简便、经济、可靠的方法产生随机数是蒙特卡洛法应用的关键.用Logistic迭代方程产生随机数,不仅简单可靠,而且符合要求,改进了蒙特卡洛算法,为工程可靠性计算提供了一种新的方法.对高阶段充填体进行了力学分析,采用微元应力分析法,推导了分层充填力学计算公式.用改进蒙特卡洛算法分析了高阶段充填体稳定性,并应用于某铜矿5号采场高阶段充填设计.研究结果表明,充填体暴露高度越高,充填体内应力越大,充填体暴露长度越小,充填体向上下盘围岩转移应力的效果越显著,因此缩短采场长度有利于充填体稳定性和降低充填成.
The simple, economical and reliable method to generate random numbers is the key to the application of Monte Carlo method.Using Logistic iterative equations to generate random numbers is not only simple and reliable, but also meets the requirements and improves the Monte Carlo algorithm, which provides a reliable method for engineering reliability calculation A new method was put forward for the mechanical analysis of high-stage filling body, and the calculation formula of layered filling mechanics was deduced by using the method of element stress analysis.The stability of high-stage filling body was analyzed by the improved Monte Carlo method and applied to The results show that the higher the height of filling body, the larger the stress in filling body and the smaller the exposed length of filling body, and the more obvious the effect of filling body to transfer stress to the surrounding rock of upper and lower plateau, Therefore, shortening the stope length is conducive to the stability of the filling body and reduce filling into.