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复合顶板中厚煤层沿空掘巷煤柱宽度研究

孙龙琦,李阳, 赵龙龙

Shaanxi Meitan（2014）

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Abstract
将沿空掘巷煤柱宽度按照沿采场边缘的塑性区、煤柱侧帮锚杆支护作用区和安全余量三部分之和作出了初步确定,采用极限平衡理论计算了采场边缘的塑性区宽度,利用自稳隐形拱理论确定了帮锚杆支护作用区,并通过Midas数值模拟获得了最佳煤柱宽度.根据自稳隐形拱理论对沿空掘巷顺槽进行了支护设计,为复合顶板中厚煤层下沿空掘巷支护提供了理论依据.
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