摘要
为了确定深井综放面沿空留巷巷旁支护体合理参数,基于某矿2302工作面实际情况建立了数值分析模型,确定了能够满足2302工作面前期切顶、后期保持基本顶稳定的支护体所需支护阻力,选择了矸石胶结充填材料,确定了支护体的材料配比,并分析了不同充填体宽度下应力峰值、顶底板移近量、两帮移近量等参数,确定了合理支护体宽度为1.6 m.现场使用效果表明,该支护体宽度的选择能够有效控制围岩变形。
The numerical analysis model was built based on the actual situation of 2302 working face. The gangue is chosen as backfill materials with cementation of other materials in a certain proportion. The reasonable supporting body width is 1. 6 m. The result indicates that the width for backfill support control the deformation of surrounding rock effectively.
出处
《山西焦煤科技》
2017年第10期37-40,共4页
Shanxi Coking Coal Science & Technology
关键词
综放沿空巷道
巷旁充填
矸石胶结
支护阻力
充填体宽度
Fully-mechanized caving roadway
Roadside filling
Coal gangue
Supporting resistance
Filling belt width
