CAJ | 학술논문

为研究渗透水压对节理应力-渗流耦合特性的影响，通过对6组人造节理试件恒定法向载荷和恒定法向刚度的压剪渗流试验，分析了应力和位移、节理水力开度以及透过率随剪切位移的变化趋势，获得了渗透水压对节理岩石应力-渗流耦合特性的影响规律。结果表明：节理试件的剪切应力和位移、水力开度以及透过率都与渗透水压密切相关。剪切应力随渗透水压的增大而减小，法向变形、水力开度和透过率却随渗透水压的增大而增大。在压剪渗流试验过程中，不同渗透压力的节理试件都发生了剪胀效应。研究可为深部岩体工程围岩遇水作用稳定性及渗流灾害控制技术提供科学的理论依据。
위연구삼투수압대절리응력-삼류우합특성적영향，통과대6조인조절리시건항정법향재하화항정법향강도적압전삼류시험，분석료응력화위이、절리수력개도이급투과솔수전절위이적변화추세，획득료삼투수압대절리암석응력-삼류우합특성적영향규률。결과표명：절리시건적전절응력화위이、수력개도이급투과솔도여삼투수압밀절상관。전절응력수삼투수압적증대이감소，법향변형、수력개도화투과솔각수삼투수압적증대이증대。재압전삼류시험과정중，불동삼투압력적절리시건도발생료전창효응。연구가위심부암체공정위암우수작용은정성급삼류재해공제기술제공과학적이론의거。
In order to study the influences of seepage pressure on joint stress-seepage coupling characteristics, changing trends of rock stress, displacement, joint hydraulic aperture and conductivity along with shear displacement are analyzed according to compression-shear seepage tests of six groups man-made joint specimens under constant normal load(CNL) and constant normal stiffness(CNS);and the influencing law of seepage pressure on stress-seepage coupling characteristics of joint rock is obtained. The results indicate that shear stress, displacement, hydraulic aperture and conductivity of joint specimen are related to seepage pressure obviously. The shear stress decreases along with the increase of seepage pressure. Normal deformation, hydraulic aperture and conductivity increase as the seepage pressure increases. During the compression shear seepage test, shear dilatancy effect appears in joint specimens under different seepage pressures. The research could provide scientific theory basis for surrounding rock stability when encountering water and control technology of seepage hazard of deep rock engineering.