填充采矿技术应用的调查通过回收工作面的废弃道路
Zi-Jie Hong1,2, Shun Chen1, Zhen-Hua Li1
1School of Civil Engineering, Henan Polytechnic University, Jiaozuo, 454003, China.
PloS one
|September 29, 2023
概括
这项研究分析了废弃道路上的屋顶稳定性,使用了一种新的填充材料. 优化的填充材料确保了道路的稳定性,并防止了采矿过程中屋顶的倒塌.
科学领域:
- 采矿工程 采矿工程 采矿工程
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
背景情况:
- 废弃的道路在随后的采矿过程中对屋顶的稳定性构成重大风险.
- 回收工作面需要强大的支系统来防止崩.
- 有效的回填材料对于确保安全和运营连续性至关重要.
研究的目的:
- 为了分析屋顶的稳定性,当回收工作面通过废弃的道路时.
- 开发和优化用于废弃道路支的回填材料.
- 为了评估开发后填充的机械性能和现场性能.
主要方法:
- 在废弃的道路上建立了主屋顶的机械模型,用于理论分析.
- 推断了补充体的强度公式.
- 通过实验确定了煤灰,石灰和化合物激活剂 (80:15:5) 和水-水泥比率 (0.7:1) 的最佳比率.
- 研究了填充材料的风湿性行为,出血,水合温度和压力强度.
- 进行了实地测试,以评估填充率和屋顶稳定性.
主要成果:
- 最佳填充组合 (80:15:5 煤灰:石灰:激活器) 显示没有出血,并表现出剪切稀释液的特性.
- 填充材料保持了稳定的水合温度,约为40°C.
- 单轴压力强度达到了3.35 MPa (28天) 和6.62 MPa (90天).
- 填充后显示在限制压力下显著的塑料变形.
- 现场测试证实了100%的填充率,并防止了屋顶的倒塌,表明了优越的粘合效应.
结论:
- 优化的回填材料有效地确保废弃道路的稳定性.
- 开发的填充材料为回收工作面提供了足够的支和粘合.
- 这项研究提供了一种可行的解决方案,用于减轻废弃道路的采矿操作中的屋顶不稳定性.
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