(1. School of Petroleum Engineering，Northeast Petroleum University，Daqing，Heilongjiang 163318，China；2. Science and Technology Innovation Team on Fault Deformation Sealing and Fluid Migration Daqing of Colleges and Universities Committee of Heilongjiang Province，Northeast Petroleum University，Daqing，Heilongjiang 163318，China)
Abstract：In order to accurately describe the problems of fracturing rock mass damage mutation cracking up crack in the oil and gas field engineering，based on the changes of rock porosity，the rock mass damage variable is defined and the damage constitutive model in the process of rock mass deformation is established. Considering that the process of reservoir fracturing rock mass damage is the accumulation increasing and suddenly releasing of rock mass deformation energy，the folding mutation model of fracturing rock mass damage tensor type is established based on the principle of conservation of energy. The balance equation of fracturing rock mass damage mutation and the calculation model of energy release quantity of rock mass damage mutational damage are given. Combined with quartz sandstone and lithic sandstone characteristics of Sulige block of Changqing Oilfield，the change rule of energy release quantity of rock damage mutational damage under hydraulic fracturing is calculated，and a new method is provided for the study of the oil and gas field fracturing rock mass damage crack formation.
赵万春1，2，王婷婷1，付晓飞1，2，官 兵1. 水力压裂岩体损伤破裂折迭突变模型研究与应用[J]. 岩石力学与工程学报, 2014, 33(S2): 3406-3411.
ZHAO Wanchun1，2，WANG Tingting1，FU Xiaofei1，2，GUAN Bing1. STUDY OF DAMAGE TENSOR FOLDING MUTATION MODEL FOR FRACTURING ROCK MASS AND ITS APPLICATION. , 2014, 33(S2): 3406-3411.
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2014, Vol. 33 
