Numerical Simulation on Influence of Rockmass Parameters on Fracture Propagation During Hydraulic Fracturing

doi:-

Abstract

Abstract: Hydraulic fracturing process in heterogeneity rockmass with different bedding angles and rock strengths was simulated by using the RFPA2D20Flow， which， considers the heterogeneous characteristics of rock at mesoscale and establishes coupled seepagestressfailure model by using finite element method. The numerical results show that the effect of bedding angle and rock strength on fracture initiation， propagation and rockmass stability during the hydraulic fracturing could not be ignored. As bedding angle increases， the maximum principal stress and bedding plane control the fracture pattern of rock specimens respectively. As rock strength decreases， the stability of bedding rockmass which have same bedding angle change greatly.

Key words: heterogeneity, bedding angle, rock strength, hydraulic fracturing, numerical simulation

CLC Number:

TE3571+1

MEN Xiaoxi， TANG Chunan， MA Tianhui. Numerical Simulation on Influence of Rockmass Parameters on Fracture Propagation During Hydraulic Fracturing[J]. Journal of Northeastern University, 2013, 34(5): 700-703.

References

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