在密集的建筑物下挖掘超厚煤层的宽带采矿的参数设计和有效性评估
Wulin Lei1,2, Lan Yu3, Shangyu Bai3
1School of New Energy, Longdong University, Qingyang, 745000, Gansu, China. xakjdxwl@163.com.
Scientific reports
|May 1, 2024
概括
这项研究利用宽带设计优化了建筑物下的煤炭开采. 该方法有效地保护了表面结构免受损坏,确保了安全的采矿操作.
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
- 地球科学 地球科学 地球科学
背景情况:
- 塞迪河煤矿面临着保护地表结构免受采矿损害的挑战.
- 在密集的表面建筑物下优化煤炭资源的释放需要仔细的矿山设计.
研究的目的:
- 开发和验证密集表面建筑物下的安全煤炭开采设计.
- 为了优化煤炭开采,同时保护地表结构免受采矿引起的损害.
主要方法:
- 利用压力弧理论和威尔逊理论用于宽带采矿设计 (70米保留,50米采矿宽度).
- 包含地质和地表建筑分析,用于特定地点的设计.
- 使用概率积分方法和FLAC3D数值模拟验证了设计.
主要成果:
- 预测的最大表面沉降为210毫米.
- 表面水平变形范围从1.0到-1.4毫米/米.
- 预计地面建筑物的损坏低于I级,符合保护要求.
结论:
- 宽带采矿设计有效地保护了表面建筑物,并允许 51,002,51,004 和 51,006 工作面的连续采矿.
- 保留的煤柱确保了足够的支强度和长期稳定性.
- 该方法可以防止波浪表面沉降,解决建筑物下安全采矿的技术困难.
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