材料期刊网

充填料浆因工艺和时序不同具有较为复杂的物理力学性质,使得合理计算充填挡墙受力较为困难,根据尾砂非胶结充填工艺充填料浆物理特性及其时效性质,结合松散介质理论和边坡滑切理论,对挡墙强度进行受力原理分析,建立了理论计算模型.将充填工艺及其时序状态分为三类,以每类型结合充填循环分为两种工况为边界条件,获得不同充填工况下挡墙受填料作用的侧向压力、总压力等的计算公式,同时结合某铜矿空场嗣后充填工艺,应用模型计算同传统计算模式、实测值进行对比分析,验证了所提模型的合理性,认为充填料对挡墙的作用压力同填料含水率、充填高度和边界摩擦等因素密切相关,而初次充填量和循环时间对挡墙优化非常关键,多层充填方式结合料浆的具体配比及充填时间进行计算,分析挡墙受力状态和结构,更符合实际.

Filling slurry, due to process and timing owning more complex physical and mechanical properties, is more difficult to make a reasonable calculation for filling retaining walls. A corresponding theoretical model was established based on the physical characteristics of fine aggregate filling process and aging properties, combining loose media theory and sliding cut theory and retaining the force strength of principle analysis. The filling process and timing state can be divided into three categories and each combination of the filling cycle can be divided into two types of working conditions as boundary conditions.The results show that lateral pressure at different filling conditions by filling the role of the retaining wall and the total pressure calculation model can be obtained Combine with a copper mine of open stopping with Subsequent Filling Technology, the proposed model with the traditional computing model was used and values comparative analysis was measured.The theoretical model in this paper was.validate The role of pressure on the retaining wall filler was deemed closely related to the filler moisture content, aggregate gradation and boundary friction and other factors, the initial filling volume and cycle time optimization is critical. The different components of the slurry filling layer and the mixture of the property combined with optimization of retaining walls and structures in timeare more reasonable.