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首页> 外文期刊>Journal of Residuals Science & Technology >A New Application of Gangue Waste in Coal Mine for Reinforcing Strip Coal Pillar
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A New Application of Gangue Waste in Coal Mine for Reinforcing Strip Coal Pillar

机译：煤Gang石废料在煤矿带状煤柱加固中的新应用

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In this paper, a new application of gangue watse in coal mine for reinforcing?strip coal pillar was introducted, which is that filling walls made of gangue concrete are filled on both sides of the strip coal pillar for improving the performances and bearing?capacity of strip coal pillar. The reinforcing mechanisms and reasonable parameters?(strength and size) of filling walls were studied. And the reinforcing effects of filling walls made of gangue concrete were simulated and analyzed using FLAC3D software. The?reinforcing role of filling walls mainly acts as the lateral restraint at the strip coal pillar.?Meanwhile, filling walls with a certain strength can cut off a certain height of roof rocks?at goaf side and the combined bearing body of the strip coal pillar, filling walls and the?broken roof rocks in goaf is formed for supporting overlying strata, sharing the bearing loads of the strip coal pillar. The strength and size of the filling wall should meet the?controlled conditions to ensure the reforcing effects. In the simulation, the strength of the?filling wall of gangue concrete satisfied the theoretical calculation strength, and the size?was taken as 3 m for the convenience of research. The simulation results show that the?yielding zones of strip coal pillar have a carrying capacity again and the lateral deformation?of the strip coal pillar is limited. And its bearing capacity is enhanced, preventing its?further damage. And the stress distribution of the strip coal pillar nearly leveled off, and?the filling wall was stable with small lateral deformation, and only a small part occurred?yield failure. The above achievements provide a new approach to use of the gangue and?have important significances for mining area environment.
机译：介绍了煤石瓦在煤矿加固带状煤柱的新应用，即在带状煤柱的两侧均填充煤石混凝土填充墙，以提高煤of石的性能和承载力。带状煤柱。研究了填充墙的加固机理和合理的参数（强度和尺寸）。利用FLAC3D软件对software石混凝土填充墙的加固效果进行了仿真分析。充填壁的加固作用主要是作为带状煤柱的侧向约束。同时，具有一定强度的充填壁可以切断采空区侧和带状煤的组合承压体的一定高度的顶板岩石。采空区中形成了煤层柱，填充壁和破碎的顶板岩，以支撑上覆地层，分担条煤柱的承载力。填充墙的强度和尺寸应满足控制条件，以确保加固效果。在模拟中，石混凝土填充墙的强度满足理论计算强度，为便于研究，取尺寸为3 m。仿真结果表明，带状煤柱的屈服区再次具有承载能力，带状煤柱的侧向变形受到限制。并且其承载能力得到增强，防止了其进一步的损坏。带状煤柱的应力分布基本趋于平稳，填充壁稳定，横向变形小，屈服破坏只有一小部分。以上成果为煤the石的利用提供了一种新途径，对矿区环境具有重要意义。

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