采动影响下沿空留巷底板非对称性底鼓变形研究

Study on Asymmetry Floor Heave Deformation for Gob-Side Entry Floor under Mining Influence

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 floor deformation problem of gob-side entry, proposes asymmetry stress characteristics of gob-side entry floor by studying on the stress of filling body and coal. Establishes a simplified mechanical model and calculates the point of stress concentration of gob-side entry floor.Takes Xiangshan mine for example and establishes numerical model and simulation, summarizes the characteristics of asymmetry deformation and control method of gob-side entry floor.