期刊论文、会议论文

Wang, H.-W.

中文

武汉理工大学学报

1671-4431

2010

32

9

97-100,110

第七届全国随机振动理论与应用学术会议

第七届全国随机振动理论与应用学术会议论文集

2010-05-21

武汉

中国振动工程学会

10.3963/j.issn.1671-4431.2010.09.023

50974076:国家自然科学基金 06jj50084:湖南省自然科学基金

本校为其他机构

地下矿体开采过程中矿柱的稳定性不仅具有随机性而且具有模糊性,考虑矿岩、混凝土材料参数及矿柱内应力的随机模糊性,提出了用动态模糊可靠度分析矿柱稳定性的新概念。通过多次正交试验有限元计算,得到矿体在每个开采施工步骤过程中功能函数值,并通过正交多项式拟合矿柱功能函数,从而建立矿柱单元在不同的开采施工步骤时的概率密度函数和模糊失效隶属度函数,求解矿柱单元在不同开采施工步骤时的模糊失效概率和模糊可靠度指标,获得了矿柱的模糊可靠性曲线。采用该方法对哈尔滨某钼矿Ⅰ号矿体上向水平充填采矿方案进行计算和分析,结果表明动态模糊可靠度能较好地反映矿体开采全过程的矿柱稳定性变...

The stability of ore pillar not only has randomness but also has fuzziness during in the underground mining process, considering randomness and fuzziness for material parameters of ore rock and concrete and for the ore pillar stress-strain state, a new concept of using dynamic fuzzy reliability to analyze the ore pillar stability during the entire process in panel mining is proposed. Through the calculations by orthogonal experimentation finite element, the ore pillar's performance function value at each mining construction stage was got. Through orthogonal polynomial fitting ore pillar perfor...