期刊论文

Yan, C.-L.(yanchunling2003@163.com)

中文

煤炭学报

0253-9993

2010

35

10

1609-1614

10.13225/j.cnki.jccs.2010.10.010

国家自然科学基金资助项目（40872178） 上海市重点学科建设项目（B308）

本校为其他机构

利用RMT-150B伺服试验系统对康家湾铅锌金矿Ⅲ-1号矿体上盘围岩进行单轴抗压、抗拉试验,各获得了50个试验结果。分别对这两种试验结果进行检验,结果表明,单轴抗压服从正态分布,抗拉强度服从对数正态分布;利用FLAC软件,对硐室围岩中的应力进行了计算,获得了50个最大主应力和50个最小主应力;采用相同假设检验法,证明最大、最小主应力分别服从对数正态分布和正态分布;根据单轴抗压、抗拉强度及围岩中的最大主应力、最小主应力概率密度函数,计算了硐室围岩不发生拉伸破坏和剪破坏的可靠度;采用随机抽样法,基于小样本试验结果对硐室围岩可靠性的可行性进行了探讨,结果表明,样本个数不能少于总样本数的...

Cores were taken from hanging wall of the III-1ore body at Kangjiawan Lead, Zink and Gold Mine. 50 compressive strength values and 50 tensile strength values were obtained by using RMT-150B electro-hydraulic and servo-controlled testing systems. The probability distributions for the compressive strength and tensile strength were tested. It is proven that uniaxial compressive strength follows normal distribution and the other follows the lognormal distribution. The stress of surrounding rock was calculated by using FLAC, and 50 maximum values and 50 minimum values were respectively obtained. Th...