基于可靠度理论的下向进路充填体强度确定方法.pdf

35 3 　　　　　　　　　　　　　　　 Vol. 35 No. 3 　　　　　　　　　 　　 2006 5 　　　　　　　　　Journal of China University of Mining Technology 　　　　　　　　　May 2006 :1000-1 64(2006)03-037-2 05 1 2 3 4 韩　斌 , 张升学, 邓　建 , 王贤来 (1. , 　100083; 2. , 　4 10014, 3. , 　4 10083, 4. , 　737100) :充填体强度确定是制约胶结充填采矿技术发展的三大充填体力学问题之一. 阐述了采用 统方法确定充填体强度的不足,结合下向进路力学分析结果, 提出了基于可靠度理论的下向进路 充填体强度确定方法和随机参数敏感性分析方法. 并结合某矿山现场实际,探讨了下向进路承载 层稳定性可靠概率的合理取值,认为承载层稳定性可靠概率为 0%时可以满足现场生产的需要. 分别采用蒙特卡洛法、改进的JC 法和JC 法计算了该矿山废石料充填进路承载层所需的强度值, 分析了各随机参数对承载层稳定性可靠概率影响的敏感性,探讨了承载层稳定性可靠指标与安全 系数之间的关系. 所提出的方法对阶段充填采矿法充填体强度确定也具有良好的适用性. :可靠度理论;下向进路采矿;充填体强度 + :TD 853. 34 3　　:A Determining Method of Backfill Strength for Underhand Drift Cu-t and-Fill Stopping Based on Reliability Theory 1 2 3 4 HAN Bin , ZHANG Sheng-xue , DENG Jian , WA NG Xian-lai (1. Key Laboratory of Educational Ministry for High Efficient Mining and Safety in Mental Mine, University of Science Technology Beijing, Beijing 100083, China; 2. Institute of Exploratory Survey and Design of Chin Salt Industry Corporation, Changsha, H unan 41001, China; 3. School of Resource Safety Engineering, Central South University, Changsha, H unan 4 10083, China; 4. Jinchuan Grop LTD, Jinchang, Gansu 737100, China) Abstract :To determine the backfill strength is one of the three difficult mechanics problems that obstruct the development of mining technology with backfill. The defect of traditional method to determine the backfill strength in underhand drift cu-t and-fil