渗流随机有限元程序设计及煤层顶板涌水预测  

Stochastic finite element program of seepage and application in foresting water burst at coal seam roof

作　　者：刘卫群[1,2] 唐珺[1,2] 蔺海晓[3] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008 [2]中国矿业大学力学与建筑工程学院,江苏徐州221008 [3]河南理工大学土木工程学院,河南焦作454000

出　　处：《辽宁工程技术大学学报（自然科学版）》2012年第3期310-314,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(50774083;41074040);国家"973"计划项目子课题资助项目(2009CB219605);教育部"新世纪优秀人才支持计划"课题资助项目(NCET-07-0803)

摘　　要：基于随机有限元理论和渗流力学原理,通过推导渗流随机有限元列式,得到随机渗流单元水导矩阵,将可靠度计算引入采动岩体随机渗流之中.根据渗流随机有限元列式编写出可用于岩层渗流计算的随机有限元程序,并对俄霍布拉克煤矿的实际渗流问题进行了数值计算.结果表明,程序计算较好地反映了实际岩层的渗流特性;保护关键层和防水层对预防矿井的顶板突水具有重要作用.计算结果可为俄霍布拉克的开采提供合理化建议,也为随机有限元在渗流方面的深入研究提供依据.Based on stochastic finite element theory and seepage mechanics,by means of deducting seepage stochastic FEM formulation,this study obtains stochastic seepage unit water matrix and introduces reliability calculation into random seepage of mined rock masses.According to seepage stochastic FEM formulation,a stochastic finite element program has been developed,which can be used to calculate rock stratum seepage.In addition,the program is used in the numeral calculation for the actual seepage at Ehuobulake mine.The results prove that this program well reflects the seepage properties of actual rock stratum.The protection of key stratum and waterproof stratum plays an important role in preventing water inrush from mine roof.The calculation results provide a rational suggestion for the exploitation at Ehuobulake mine,and also provide evidences for in-depth study on stochastic infinite element in terms of seepage.

关 键 词：采动岩体 渗流 随机有限元 验算点 可靠度 数值模拟 关键层 突水 

分 类 号：O357[理学—流体力学]