摘要
采动岩体动力学失稳与渗流突变是发生矿井突水的直接原因。以岩体的损伤演化为主线,考虑岩体的非均质性、渗流与变形的耦合效应,提出流固耦合条件下岩石破坏过程的本构关系,并在COMSOL Multiphysics的编程环境下通过MATLAB编程开发了突水模拟及突水危险性评价的软件系统。结合范各庄矿陷落柱突水的实际,用该数值模拟系统开展陷落柱突水的数值模拟。数值模拟再现了突水发生的整个过程,据此对陷落柱突水危险性进行了评价分析,并探讨了突水发生的机理。
The direct cause for the water in-rush during underground mining is the mining-induced rockmass damage and resultant catastrophe of seepage characteristics.The work begins with proposing a constitutive law for rock failure under coupled hydromechanical conditions when the rock heterogeneity,as well as the coupling between deformation and fluid flow,is incorporated.This constitutive law is implemented into commercial FEM software named COMSOL Multiphysis（CM） based on the MATLAB programming,and is used for evaluating the water inrush possibility of a Karst subsidence column at Fan＇ gezhaung Colliery in China. The complete water in - rush process is numerically reproduced, based on which the possibility for water in - rush is assessed and the associated mechanical mechanism is clarified.
出处
《地下空间与工程学报》
CSCD
北大核心
2009年第5期928-933,共6页
Chinese Journal of Underground Space and Engineering
基金
国家重点基础研究发展计划(973计划)项目(2007CB209405)
国家自然科学基金资助项目(50874024
50504005
50674025和10872046)
教育部科学技术研究重点项目(108038)
新世纪优秀人才支持计划资助项目(NCET-06-0291和NCET-05-0290)
关键词
突水
陷落柱
损伤演化
数值模拟
water in-rush
Karst collapse column
damage evolution
numerical simulation
