基于Matlab优化工具箱的煤巷顶板锚杆支护结构可靠性分析

针对煤巷围岩力学参数中有许多为随机变量的特征,根据围岩稳定性极限状态方程,应用工程结构可靠性理论,分析煤巷顶板锚杆支护结构的可靠性,建立基于Matlab优化工具箱的可靠度计算模型。该法编程简单,计算速度快,精度高,程序通用性强,是一种计算煤巷锚杆支护结构可靠度的有效方法,并且分析该法计算结构可靠度的适用条件,建立了巷道顶板支护参数与可靠度的关系曲线,为煤巷锚杆支护参数设计和优化提供了科学依据。

Reliability Analysis on Bolt Support Structure of Coal Roadway Roof Based on Matlab's Optimization Toolbox

Considering that many of the mechanic parameters of wall rock possess the characteristics of random variables, a reliability-calculating model based on Matlabg Optimization Toolbox is established according to the limit state equation of wall rock stability and engineering reliability theory so as to analyze the reliability of the bolt support structure of coal roadway roof. This method, with a high precision, is not only simple to program and quick in calculation, but also the program for it is highly generalized. So, it is an effective one to calculate the reliability of the bolt support structure of coal roadway. Besides, the working conditions for this method are analyzed and the relation curve between the supporting parameters of coal roadway roof and its reliability is set up, which provides scientific foundations for the design and optimization of the holt support parameters.