摘要
应用东北大学岩石破裂与失稳研究中心开发的岩石破裂过程渗流与损伤耦合作用分析系统(F-RFPA2D),以大柳塔煤矿一工作面为例,建立地质力学模型,再现了浅埋煤层采动后其上覆岩体破坏的动态发展过程,揭示了采场顶板的破断、上覆岩层来压及采场推进过程中煤壁支承压力、地表下沉的变化等规律。特别是直观地得到了采动条件下岩层裂隙发展、贯通引起的渗水过程。模拟研究结果和现场实际观测到的结果基本吻合。对于促进西部煤田的高效安全开采具有重要意义。
Applying the Coupling System of Flow ＆ Solid in Rock Failure Process Analysis （F RFPA2D） developed by CRISR, Northeastern University, taking a working face of Daliuta coal mine for example, the geomechanics model is constructed. The numerical results reproduce the dynamic process of overburden failure, and reveal the change law of the roof failure, the abutment pressure of overlying strata, support pressure of coal wall and surface subsidence with the mining process. Especially the permeation process caused by the rock strata crack propagation and coalescence can be obtained directly. The simulative results basically tally with the ones observed in practice, which will be of important significance for accelerating the high efficiency and safety mining of western coalfields.
出处
《西部探矿工程》
CAS
2006年第2期95-97,共3页
West-China Exploration Engineering
关键词
浅埋煤层
数值模拟
破坏过程
上覆岩层
渗水机理
shallow-lying coal seam
numerical simulation
failure proeess
overlying strata
seepage mechanism
