CAJ | 학술논문

针对灰砂比分别为1：4，1：8和l：10的尾砂胶结充填体进行了力学试验，得出了其在单轴压缩条件下的物理力学特性。根据统计损伤理论，在材料微元强度服从Weibull分布规律的基础上，引入有效损伤率参数来表征损伤材料的承栽能力，建立尾砂胶结充填体在单轴压缩条件下的损伤软一硬化本构模型。经对比验算，尾砂胶结充填体损伤软一硬化模型与实验结果相吻合叠该模型在体现尾砂胶结充填体损伤随机性、应变软化过程的同时，反映了尾砂胶结充填体峰后应变硬化过程及规律，为充填体强度设计提供了依据。
침대회사비분별위1：4，1：8화l：10적미사효결충전체진행료역학시험，득출료기재단축압축조건하적물리역학특성。근거통계손상이론，재재료미원강도복종Weibull분포규률적기출상，인입유효손상솔삼수래표정손상재료적승재능력，건립미사효결충전체재단축압축조건하적손상연일경화본구모형。경대비험산，미사효결충전체손상연일경화모형여실험결과상문합첩해모형재체현미사효결충전체손상수궤성、응변연화과정적동시，반영료미사효결충전체봉후응변경화과정급규률，위충전체강도설계제공료의거。
The mechanical tests of tailings cemented filling body with cement-sand ratio of 1 ： 4,1 ： 8,and 1 ： 10 were conducted,obtaining the physical and mechanical properties under the uniaxial compressive condition. Then, accord- ing to the statistical damage theory and based on the principle that material micro-unit strength obeys Weibull distri- bution,a softening-hardening intrinsically constitutive model for damage of tailings-cemented filling body under the uniaxial compressive condition was established by introducing effective damage rate parameter which demonstrates the bearing capacity of material in damage. The contrast checking shows that the conclusion of softening-hardening constitutive model for the damage of filling body agrees with experimental results. The proposed model not only demonstrates damage randomness,strain softening process of tailings-cemented filling body but also reflects its strain hardening regularity after the pressure peak,providing the guide for strength design of filling body.