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针对沿空留巷底板变形问题,及对沿空留巷巷旁充填体及巷道一侧实体煤的力学研究,提出沿空巷道底板受力的非对称性特征。建立简化的力学模型,计算沿空巷道底板的集中应力作用点。以韩城矿业公司象山煤矿为例,建立数值模型并进行数值模拟计算,总结沿空巷道底板底鼓变形的非对称性特征及针对性控制方法。
In view of the deformation of gob-side entry retaining floor and mechanics research on gob-side gob of gob-side entryway and physical coal on the side of roadway, the unsymmetrical characteristics of gob-side entry under gob-side entry is proposed. A simplified mechanical model is established to calculate the concentrated stress point of the roadway along the roadway. Taking Hancheng Mining Company Xiangshan Coal Mine as an example, a numerical model is established and numerical simulation is carried out. The asymmetry characteristics and targeted control methods of bottom drum deformation of gob-side entry are summarized.