地下硐室的现场量测与适时支护  

IN-SITU MEASUREMENT OF UNDERGROUND OPENINGS AND OPTIMUM SUPPORTING TIME

作　　者：高效伟[1] 何祖光 郑颖人[3] 

机构地区：[1]宁夏大学 [2]石嘴山矿务局 [3]空军工程学院

出　　处：《煤炭学报》1991年第4期33-39,共7页Journal of China Coal Society

摘　　要：工程量测是地下工程的核心,它不仅可作为技术设计和施工设计的依据,而且还可指导施工确定支护时机、判断围岩稳定性和安全预报。本文针对巷道断面量测位移速率的非线性拟合曲线,分析了巷道开挖后,围岩的变形特性,介绍了确定最佳支护时间的原理和方法,并对正在建设的宁夏石嘴山三号井进行了计算分析,得出最佳支护时间,显示了该方法简单易行的优点,对实际工程具有较大的应用价值。Engineering measurement is an essential part of underground project. It provides not only data for technical and constructional design, but also guidelines for determination of optimal supporting time, for assessment of stability of rocks and prediction of safety. The paper describes the principles and a method for determining the optimal supporting time by using a non-linear fitting curve of measured convergence rate on the basis of deformation characteristics of rocks after opening is excavated. The measured data from Shizuishan No. 3 mine, Ningxia province are calculated and the optimal supporting time is obtained. This method is simple and convenient, and is of great value to underground projects.

关 键 词：地下 硐室 现场 测量 支护 

分 类 号：TD264.3[矿业工程—矿井建设]