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论文类型：期刊论文

发表时间：2022-06-30

发表刊物：计算力学学报

所属单位：建设工程学部

卷号：25

期号：6

页面范围：764-769

ISSN号：1007-4708

摘要：Based on the heterogeneous characteristics of rock at mesoscopic level,
   the thermo-hydro-mechanical （THM） coupled action during the failure
   process of rock subjected to THM loading is described with elastic
   damage mechanics, thermal-elastic theory and seepage mechanics. A
   mesoscopic thermo- hydro-mechanical-damage （THMD Model） coupling model,
   implemented in RFPA, is proposed. In the numerical model, the damage and
   associated mechanical properties evolution of mesoscopic structure in
   rocks subjected to THM loading was discussed. Numerical simulation is
   carried out to investigate the stability of near-field rock mass around
   a vertical borehole subjected to coupled thermo-hydro-mechanical
   loading. The numerically obtained stress field, failure pattern,
   associated AE events and permeability evolution are all agree well with
   the in-situ data, which prove that the proposed model is reasonable and
   effective. The proposed technique is significantly meaningful for the
   investigation of failure mechanism of rock subjected to coupled
   thermo-hydrologic-mechanical loading.

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