岩土工程学报模板.doc

岩土工程学报模板 篇一：《岩土工程学报》论文格式样板 第xx卷 第x期 岩土工 程学 报 Vol.xx No.x xxxx年 x月 Chinese Journal of Geotechnical Engineering xxxx, xxxx 基于混沌优化的高阶段充填体可靠性分析 刘志祥，李夕兵，张义平 (中南大学，湖南 长沙 410083) 摘 要：对高阶段充填体进行了力学分析，推导了分层充填力学计算公式，用可靠性理论研究了高阶段充填体稳定性。考虑高阶段充填体可靠性分析的状态函数求导困难，提出了基于混沌优化的可靠性计算方法，为工程中复杂函数计算 可靠性指标提供了一种新的方法。高阶段充填体力学研究表明：缩短采场长度和增大采场宽度有利于充填体稳定性和 降低充填成本。为了评价高阶段充填体稳定性，分别在实验室配制充填料浆和采场取样试验了尾砂胶结充填体强度， 分析了采场原位充填体强度与实验室试验强度的差异。研究认为：采用实验室力学参数进行充填设计，最小设计安全 系数为1.6～1.8，最小可靠性指标为1.8～2.0比较合理。用本文方法对安庆铜矿3号高阶段采场充填体进行了可靠性 分析，并评价了充填设计的可行性。 关键词：尾砂胶结充填体；分层充填；可靠性；混沌优化 中图分类号：TD853.34 文献标识码：A 文章编号：1000–4548(2006)03–0348–05 作者简介：刘志祥(1967– )，男，湖南宁乡人，中南大学博士后，从事采矿与岩石力学研究。 Reliability analysis of high level backfill based on chaotic optimization LIU Zhi-xiang, LI Xi-bing, ZHANG Yi-ping (Central South University, Changsha 410083, China) Abstract: Through the mechanical analysis of high backfill, the calculation formulae of the stratified backfill practice were deduced and reliability analysis of their stabilities were studied. In reliability analysis of high backfill, because the differential of status function was difficult to be obtained, a calculating method of reliability based on chaotic optimization was proposed, which was a new method of reliability analysis for complex status function in engineering practice. The mechanical researches showed that reducing length or increasing width of stope were propitious to improve stability of backfill and to lower filling cost. In order to evaluate the stability of backfill, a series of strength experiments of cemented tailings backfill both in the laboratory and under filling stope conditions were done, and their differences of strength were analyzed, as well as a conclusion was drawn that if the mechanical parameters in lab were used as the basis of filling design, the minimum safety factor should be 1.6 to 1.8, and the minimum index of reliability should be 1.8 to 2.0. Using the present method, the reliable indexes of backfill in stope No