CAJ | 학술논문

利用冻三轴试验机研究了负温条件下梅林庙矿红砂岩的力学特性与变形规律。在-15℃低温条件下对红砂岩施加4种围压，分析了围压对岩石强度和弹性模量的影响。结果表明，在冻结条件下红砂岩轴向抗压强度与围压、弹性模量与围压均呈线性关系，红砂岩仍然遵循库仑强度准则。经回归分析得到红砂岩黏聚力为12.7 MPa，内摩擦角为30.4°。岩石破坏形式与围压大小相关。
이용동삼축시험궤연구료부온조건하매림묘광홍사암적역학특성여변형규률。재-15℃저온조건하대홍사암시가4충위압，분석료위압대암석강도화탄성모량적영향。결과표명，재동결조건하홍사암축향항압강도여위압、탄성모량여위압균정선성관계，홍사암잉연준순고륜강도준칙。경회귀분석득도홍사암점취력위12.7 MPa，내마찰각위30.4°。암석파배형식여위압대소상관。
The study of mechanical properties and deformation rule of Meilinmiao red sandstone have been conducted on freezing triaxial test machine. Four different confining pressures are applied sepa-rately on the samples at-15℃, and the effect of confining pressure to rock strength and Young’s modu-lus are analyzed. The results show that both axial compressive strength and Young’s modulus increase linearly as the confining pressure increases, and the red sandstone still meet Coulomb criterion. Through regression analysis, the cohesion of red sandstone is 12.7 MPa, and the internal friction angle is 30.4°. The rock failure form is related to confining pressure.