CAJ | 학술논문

为研究受地应力与渗透水压耦合作用下的深部岩体受到爆破等动力扰动的力学响应，研制了渗透水压加载装置，对含裂纹类岩石材料的混凝土试样加载预应力后，进行有渗透水压作用和无渗透水压作用下单轴循环加卸载压缩破坏对比试验。试验结果表明，在试样弹性阶段加载有限次循环载荷有助于类岩石材料的强化；在有渗透水压作用下，单轴循环加卸载后岩石的强度降低，降低的程度与循环载荷加载时预应力的大小有关，在弹性阶段加载循环载荷的岩石强度高于在损伤阶段加载循环载荷的岩石强度，而且在渗透水压作用下岩石的应变大于无渗透水压作用下岩石的应变。具有岩爆倾向性的岩石可以通过加载、卸载产生损伤以降低其岩爆倾向性，同时低渗透水压的作用可使岩爆降低程度更剧。
위연구수지응력여삼투수압우합작용하적심부암체수도폭파등동력우동적역학향응，연제료삼투수압가재장치，대함렬문류암석재료적혼응토시양가재예응력후，진행유삼투수압작용화무삼투수압작용하단축순배가사재압축파배대비시험。시험결과표명，재시양탄성계단가재유한차순배재하유조우류암석재료적강화；재유삼투수압작용하，단축순배가사재후암석적강도강저，강저적정도여순배재하가재시예응력적대소유관，재탄성계단가재순배재하적암석강도고우재손상계단가재순배재하적암석강도，이차재삼투수압작용하암석적응변대우무삼투수압작용하암석적응변。구유암폭경향성적암석가이통과가재、사재산생손상이강저기암폭경향성，동시저삼투수압적작용가사암폭강저정도경극。
In this paper, to reveal the mechanical response of deep rock under the coupled action of ground stress and seepage water pressure when facing dynamic disturbance such as blasting, the seep-age pressure loading device was developed, and the uniaxial cyclic loading tests of prestress fractured concrete samples, coupling with and without seepage water pressure, were carried out respectively. The results show that the limited uniaxial cyclic loading is helpful to the strengthening of concrete material when it is in the elastic stage. Under the action of seepage water pressure, the rock strength is reduced after the uniaxial cyclic loading, while the reduction degree is related to the prestress of cyclic loading. Meanwhile, when the cyclic loading is compressed in the elastic stage, the rock strength is higher than that when cyclic loading is compressed in the damage stage. In addition, the rock strain under the action of seepage water pressure is greater than that without seepage water pressure. Therefore, the burst proneness of rock mass can be reduced by the action of cyclic loading and unloading, and the low seep-age water pressure can further decrease the rock burst proneness.