【摘要】 结合公路隧道地压计算方法提出了煤矿松软地层大断面井巷最小支护厚度计算公式,并通过FLAC3D对支护结构进行了受力数值模拟计算,最后对碹体稳定性进行了验算。还介绍了其在工程中的应用。该计算方法简单实用,对工程实践有很强的指导意义。更多还原

【Abstract】 This article gives the calculation formula on smallest support thickness of soft stratum and large cross-section shaft and tunnel combined with the calculation method of road tunnel ground pressure,and calculates the force of support structure by FLAC3D,at last checks the stability of arch walling.In the end introduces the application.This calculation method is easy and useful,and it can privides a very strong lead to the engineering practice.更多还原