Numerical analysis of hydraulic-mechanical coupling in single fracture rock mass
With the continuous development of underground engineering,many underground engineering failures occur under the action of water-force coupling.The water-force coupling of fissured rock mass has always been a hot topic studied by scholars at home and abroad.Based on the concept model of water-force coupling in single fis-sure rock mass,the influence of fracture water pressure and rock mass stress on seepage field and rock mass displacement field calculated by using discrete element program.It was found that the model reached steady state about 10 seconds later,and the joint fluid formed a seepage field from left to right.The fluid pressure at the joint entrance was positively correlated with the pressure gradient of the joint fluid.The displacement of jointed rock mass mainly formed a displacement field radiating from the joint entrance to its periphery,and the fluid pressure at the joint entrance was positively correlated with the displacement gradient of jointed rock mass.The displacement of jointed rock mass mainly formed a water pressure field radiating from the middle area of the joint to its periphery,and the downward stress applied on the top of the rock mass was positively correlated with the joint water pressure gradient.The research results have certain scientific significance and engineering value for solving the hydraulic-mechanical coupling problem in underground engineering.
Single fracture rock masshydraulic-mechanical couplingnumerical analysis
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