ZHAO Dewen ZHANG Qiang Northeast University of Technology
,
Shenyang 110006
,
China.
材料科学技术（英文）
An integration depending on the parameter Ф has been applied to the function Фdx so that an explicit formula of specific pressure calculation and an analytical solution are obtained.It has been found that the analytical solution is basically the same as the prevailing numerical one which is from the formula There- fore,it is justified theoretically that for the slip line field in the compression of a thin workpiece a parametric integra- tion is perfectly possible for satisfactory analytical solution.
关键词:
slip line field
,
null
,
null
时健
,
尤春安
,
刘群
,
毕冬宾
,
邵辉
有色金属工程
doi:10.3969/j.issn.2095-1744.2016.05.015
巷道底鼓问题是严重影响矿井安全生产的主要因素之一,选择适宜的底鼓控制技术并确定合理的支护参数,有利于矿井生产安全、高效地进行.本文基于塑性极限分析法研究了底板岩体刚进入塑性极限状态时底板的塑性区范围、应力场分布以及位移演化规律,认为提高底板岩体强度并增加支护阻力可以有效提高底板的极限承载力.并在此基础上,提出了底板锚杆的支护参数包括支护阻力、长度及间距在内的确定方法,为传统支护设计提供科学依据,有一定的工程应用价值.
关键词:
塑性极限分析
,
滑移线场
,
底鼓巷道
,
底板锚杆
,
支护参数
