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超高水材料开放式充填开采在临沂矿业集团田庄煤矿11611工作面试用成功,充填开采后,采场矿压显现程度明显降低,地表建筑物破坏等级均控制在国家规定的允许范围内。以田庄煤矿超高水材料充填开采为背景,利用有限元ANSYS软件和相似材料模拟对超高水材料充填开采后采场围岩的成拱特性进行了研究。结果表明,超高水材料充填开采后,充填体能够将围岩中的裂隙充填密实,从而使充填体、垮矸、围岩三者形成一个新的平衡体系,围岩的成拱系数量级较小,围岩受扰动小,大部分围岩处于小变形状态,上覆岩层的弯曲变形量不足以超过其极限挠度值而发生断裂现象,因而能够有效控制岩层的运动。
Open fill mining of ultra-high water materials was successfully applied to 11611 working face of Tianzhuang Coal Mine of Linyi Mining Group. After filling, the underground pressure of stope was obviously reduced and the damage grade of surface buildings was controlled within the allowable range stipulated by the state. Taking the filling and mining of superhigh water material in Tianzhuang Coal Mine as a background, the finite element ANSYS software and the simulation of similar materials were used to study the arching characteristics of surrounding rock after the mining of ultra-high water material. The results show that the filling body can fill the fissures in the surrounding rock densely after ultra-high water material filling and mining, so that a new equilibrium system is formed between the filling body, the collapsed rock and the surrounding rock, Small, the disturbance of surrounding rock is small, most of the surrounding rock is in the state of small deformation, and the bending deformation of the overburden is not enough to exceed the limit deflection of the overburden, which can effectively control the movement of the rock.