浅埋煤层顶板运移及地表沉陷规律

Roof Movement and Surface Subsidence Laws of Shallow Buried Coal Seam

摘要: 以西部矿区杨家村煤矿浅埋深薄基岩煤层的长臂开采为工程背景，利用二维离散元数值分析软件UDEC，模拟了工作面的回采过程，总结分析了回采过程中煤层上覆顶板运移规律主要表现在顶板破断具有突然性和贯通性，地表沉陷的主要规律则表现为在地表形成锯齿状的沉陷断裂带，该规律与现场实际情况基本相符。在此基础上，该矿采取一系列技术措施有效避免了由此引发的次生灾害和损失。
- 浅埋深 /
- 薄基岩 /
- 顶板运移 /
- 地表沉陷 /
- UDEC /
- 顶板控制
Abstract: Take the long wall mining of shallow-buried coal seam under thin base rock in Yangjiacun western mining area as the engineering background, using two dimension discrete element numerical analysis software UDEC, the mining process of working face was simulated, the laws that roof movement has suddenness and coherence and surface subsidence exhibits a jagged subsidence fault zone on the surface were summarized and analyzed. The laws are basically consistent with the actual situation. On this basis, the mine adopted a series of technical measures to effectively avoid secondary disasters and losses.
- shallow buried depth /
- thin base rock /
- roof moment /
- surface subsidence /
- UDEC /
- roof control

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