论文部分内容阅读
本文从岩体的流变性质及喷射混凝土支护与岩体相互作用的观点,对支护机理作了初步探讨。以岩石流变模型为基础,考虑支护对岩体的反作用力,导出了在平面变形条件下圆形断面平巷及竖井岩体中应力、应变、位移与时间关系的公式,还导出岩体中应力、应变分布公式,给出了计算喷射混凝土支护内部的应力、应变及位移公式。最后,在理论结果的基础上,作者提出设计喷射混凝土厚度及所需强度的计算公式。
In this paper, the rheological properties of rock mass and the sprayed concrete support and rock mass interaction point of view, the support mechanism for a preliminary study. Based on the rock rheological model, the formula of the relationship between stress, strain, displacement and time in circular section drift and shaft rock mass under plane deformation was derived considering the reaction force of support to the rock mass. The rock mass Medium stress and strain distribution formulas are given, and the formulas for calculating the stress, strain and displacement inside shotcrete support are given. Finally, on the basis of the theoretical results, the author puts forward the formula to calculate the thickness and required strength of shotcrete.