The properties of the artificial interstratified rock mass

• Main Authors: R.J. Wang, 王仁正
• Other Authors: Y.M. Tien
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/95640420879530395461

碩士 === 國立中央大學 === 土木工程研究所 === 83 === The mechanical properties of rock mass are influenced mainly by geological, lithological, physical, mechanical and environmental factors, such as preferred partical and crystal orientation, stratificaion, foliation and joint. Even isotropic rock material, the rock mass will behave anisotropically if cut by regular joint or formed by sequent stratification. The main purpose of this research is to study the mechanical properties of interstratified rock mass. Rock-like material ( such as : cement、microsilica、kaolinite ) will be used to obtain interstratified block. Interstratified specimens with various dip angle was drilled from interstratified block along different direction. Both experimental and theoretical study was carried out to investigate the mechanical behavious of interstratified rock mass. To find the mechanical properties of interstratified rock mass, a series of triaxial comprssion testes was conducted. We used the failure criterion of interstratified rock mass that developed by Tien, Y. M. et. al (1994) to simulate interstratified rock mass strength behavious. As the constitutive law, we used the constitutive law of interstratified rock masses th by Salamon (1968) and the flexible interface constitutive model for muti-layered rock masses that developed by Lay (1994) to simulate elastic modulus with different direction. By observation of the failure condition of specimen after triaxial compression tests , the failure modes of interstratified rocks can be classified into six categories : (1)tensile failure mode (2)ductile failure mode (3)sliding failure mode (4)shear failure mode (5)buckling failure mode (6)local buckling failure mode