基于Marzars损伤模型的胶结充填体合理强度确定

Determination of reasonable filling body strength based on Marzars damage model

为了研究金山金矿不同灰砂比的尾砂胶结充填体破坏规律,运用损伤力学理论,建立了不同灰砂比的尾砂胶结充填体压缩损伤本构模型。采用采场采矿后的岩体释放能量逼近胶结充填体峰值变形能原则,结合金山金矿条带式充填采矿法试验采场的具体位置、地应力、采场结构参数,确定了尾砂胶结充填体的强度,为尾砂胶结充填参数的确定提供理论依据。

A constitutive compression damage model of tailings cement filling body with different ash-sand ratios is established based on damage mechanics theory in order to study the destruction rules of tailings cement filling body with different ash-and ratios in Jinshan Gold Mine. Based on the fact that the energy release from rocks after mining is approximate to the peak deformation energy of the cement filling body, and with the specific location, stress and struc-tural parameters of the experimental stope in stripped filling and mining method of Jinshan Gold Mine, the tailings ce-ment filling body strength is determined. The research provides the basis for the determination of filling parameters for tailings cement filling.