摘要
本文采用材料力学研究方法,建立基本顶在实体煤内侧破断结构模型,计算出帮部受力发生挠曲变形的临界载荷(无支护状态下),采用通用离散单元法UDEC4.0进行模拟分析,建立留小煤柱沿空巷道数值模拟计算模型,在实体煤内侧破断模型中无支护条件下各因素对巷道结构稳定性性影响的不同关系;为沿空留巷巷道支护提供理论依据。
In this paper, the mechanics method of material mechanics is used to establish the model of the internal fracture structure of the solid coal, and the critical load (under unsupported condition) of the bending deformation is calculated. The simulation is carried out by the universal discrete element method UDEC4.0, A numerical simulation model is established to study the influence of various factors on the stability of the roadway structure under the condition of unsupported condition in the inner coal seam of the solid coal. It provides a theoretical basis for the roadway support of gob-side entry retaining .
作者
杨森
常庆灵
司广宏
Yang Sen;Chang Qing-ling;Si Guang-hong(Shanxi Lu'an Group Yuwu coal industry limited liability company, Shanxi Changzhi 046103)
出处
《山东煤炭科技》
2017年第2期52-55,59,共5页
Shandong Coal Science and Technology
关键词
小煤柱
顶板
力学模型
结构稳定性
small coal pillar
roof
a mechanical model
structural stability
