CAJ | 학술논문

针对具似层状结构的石英云母片岩，采用原位真三轴试验新技术，模拟隧洞开挖边墙的复杂应力状态，取得卸侧压路径原位真三轴强度和流变试验成果，并按反映岩体三剪应力状态的D-P准则研究复杂应力状态岩体强度参数。对于特定应力状态，垂直于片理面卸载，D-P准则参数低于M-C准则强度参数。通过比较卸侧压路径、加轴压路径的三轴强度参数以及岩体直剪强度参数，按D-P准则整理的卸侧压真三轴流变强度参数能更好地反映复杂应力状态围岩强度特征。
침대구사층상결구적석영운모편암，채용원위진삼축시험신기술，모의수동개알변장적복잡응력상태，취득사측압로경원위진삼축강도화류변시험성과，병안반영암체삼전응력상태적D-P준칙연구복잡응력상태암체강도삼수。대우특정응력상태，수직우편리면사재，D-P준칙삼수저우M-C준칙강도삼수。통과비교사측압로경、가축압로경적삼축강도삼수이급암체직전강도삼수，안D-P준칙정리적사측압진삼축류변강도삼수능경호지반영복잡응력상태위암강도특정。
Strength and rheological properties of quartz-mica schist is obtained by new technology of the situ true triaxial test which can simulate complex stress state of tunnel sidewall.D-P criterion which could reflect three shear stress state is utilized to study strength parameters of quartz-mica schist under complex stress state. Under the specific condition when stress is unloaded in the direction perpendicular to the foliation plane,shear strength parameters obtained from D-P criterion are lower than shear strength parameters obtained from M-C criterion. Due to more practical stress state,true triaxial rheological parameters of D-P criterion under the condition with unloaded side pressure path can reflects the strength characteristics of rock masses of tunnel better than those under the condition with axial loaded path.