综放开采大开间抗变形农房结构的试验研究

Testing study of the surface big room width antideformation house influenced by the coal mining of fully mechanized top-coal caving

对综放开采条件下抗变形农房结构中的钢筋计应力进行了分析,指出处于受拉区的房屋比处于受压区的房屋受力要大些,建筑物基础是最大的受力部位等规律;对综放开采条件下抗变形农房中的压力盒反力进行了分析,指出地基反力在采动活跃期发生剧烈的变化,在采动影响结束后,地基反力发生重分布的特点.通过潞安矿务局五阳煤矿的现场试验证明,采取抗变形措施的大开间新型农房结构,经受了综放开采的大变形影响,农房得到了有效保护.图8,参4.

By way of the site testing in Wuyang Mine of Lu'an Coal Mining Administration, it was proved that the big room width new type house of taking antideformation measure experience effect of the surface big deformation. The house get effective protecting. It was the first time to analysis to stress in reinforcing bar gauges of the antideformation house influenced by the coal mining of fully mechanized topcoal caving. The paper pointed out that the stress of house being situated in tensile strain deformation area is bigger than being situated in compression strain deformation area. The stress in the building foundation is biggest, and other laws were pointed out. It was the first time to analysis to foundation reverse force in the antideformation house under the fully mechanized top-coal caving condition. The paper pointed out that the foundation reverse force would have serious exchanges in the mining activity period. The paper showed the redistribution features of the foundation reverse force after the mining activity influence ended.8figs.,4refs.