CAJ | 학술논문

文章利用RM T-150C型岩石力学多功能试验机，研究了干燥和饱水状态红砂岩的力学特性。研究结果表明：水对皖南山区红砂岩的强度和变形特性具有显著影响；饱水试样的强度、弹性模量和变形模量与干燥状态红砂岩相应指标相比均表现出降低特征；弹性模量和变形模量随着围压的增大而增大，但饱水和干燥2种情况下的变化趋势不同；Mogi-Coulomb强度准则比Mohr-Coulomb强度准则更能准确描述红砂岩的强度特性；干燥状态和饱水状态红砂岩破坏形式不同，干燥试样在低围压下破坏以拉剪复合破裂为主，随着围压的增大，破裂形式则为剪切破裂；而饱水试样破裂均为剪切破裂。
문장이용RM T-150C형암석역학다공능시험궤，연구료간조화포수상태홍사암적역학특성。연구결과표명：수대환남산구홍사암적강도화변형특성구유현저영향；포수시양적강도、탄성모량화변형모량여간조상태홍사암상응지표상비균표현출강저특정；탄성모량화변형모량수착위압적증대이증대，단포수화간조2충정황하적변화추세불동；Mogi-Coulomb강도준칙비Mohr-Coulomb강도준칙경능준학묘술홍사암적강도특성；간조상태화포수상태홍사암파배형식불동，간조시양재저위압하파배이랍전복합파렬위주，수착위압적증대，파렬형식칙위전절파렬；이포수시양파렬균위전절파렬。
Triaxial compression experiment was carried out to investigate the mechanical properties of dry and saturated red sandstone specimens by using rock mechanics test equipment RM T-150C .The results show that the effect of water on the strength and deformation characteristics of red sandstone is obvious .In comparison with dry specimens ,the strength and deformation parameters of saturated specimens including strength ,elastic modulus and deformation modulus decrease in different degree . Elastic modulus and deformation modulus increase with increasing confining pressure . The change trend of elastic modulus and deformation modulus under dry or saturated situation is significantly dif-ferent .Mogi-Coulomb strength criterion fits experimental results better than Mohr-Coulomb strength criterion .The fracture of dry specimens under low confining pressure is controlled by tensile-shear mixed mode fracture ,and then controlled by shear fracture as the confining pressure increases .How-ever ,the saturated specimens rupture by shear fracture .