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采用超高水材料开放式充填技术的关键是保持顶板的完整性,将充填工作面分别简化为四边固支板、三边固支一边简支板、两边固支两边简支板、一边固支三边简支板和四边简支板5种边界支撑的弹性板,并基于虚功原理推导了弹性地基板以及四边受水平压力作用时弹性板挠度和弯矩的表达式,分析研究了板最大弯矩与推进距离的关系,为超高水材料开放式充填开采工作面开采宽度及工作面的布设方式设计提供依据。根据现场实测数据分析,对理论模型进行了验证。
The key to open filling technology of ultra-high water materials is to maintain the integrity of the roof, simplify the filling face to four sides of the support, the three sides of the solid support side of the simple support plate, both sides of solid support both sides of the support plate, while solid support Three-sided simple-supported board and four-sided simple-supported board. Based on the principle of virtual work, the expressions of the elastic baseboard and the deflection and moment of elastic board under horizontal pressure are deduced. The maximum The relationship between bending moment and propulsion distance provides the basis for the design of openworking mining face of ultrahigh water material and design of working face. According to the field measurement data analysis, the theoretical model was verified.