超高水材料开放式充填开采围岩成拱特性研究  

Research on Surrounding Rock Arching Characteristics in the Open Filling Mining with Ultrahigh Water Material

作　　者：王伟[1] 王晨龙[1] 弓培林[1] 

机构地区：[1]太原理工大学矿业工程学院,山西太原030024

出　　处：《矿业研究与开发》2014年第3期22-24,28,共4页Mining Research and Development

基　　金："十二五"国家科技支撑计划项目(2012BAB13B04)

摘　　要：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 filling mining with ultrahigh water material was successfully used at 11611 working face of Tianzhuang Coal Mine. After filling mining, stope underground pressure behavior significantly reduced, and the surface building damage grade satisfied national regulation. According to Tianzhuang Coal Mine, the stope surrounding rock arching characteristics during open filling mining with ultrahigh water material were analyzed by the finite element software ANSYS and similar material simulation. The results showed that open filling mining with ultrahigh water material was favor in filling the fracture of the surrounding rocks densely, with a new equilibrium system formed by filling body, collapse of gangue and surrounding rock. Most surrounding rocks were deformed slightly, with small arching coefficient and little disturbance, and the bending deformation of the upper strata was not sufficient to reach the limit of deflection and crack. The mining method was proved to effectively control the strata movement.

关 键 词：超高水材料 充填开采 围岩成拱特性 数值模拟 相似材料模拟 

分 类 号：TD853.34[矿业工程—金属矿开采]