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通过对综放面采空区侧煤体应力分布的数值模拟 ,运用极限平衡理论确定了沿空巷道窄煤柱的宽度 ,进行了合理的巷道定位。提出了综放沿空掘巷围岩控制机理和高强锚杆支护方案 ,并应用于工程实践 ,取得了良好的技术经济效果。
Through the numerical simulation of the stress distribution on the coal side of the goaf in the fully mechanized caving face, the limit equilibrium theory is used to determine the width of the narrow coal pillar in the gob-side entry. The reasonable laneway positioning is carried out. Put forward the control mechanism of surrounding rock of roadway driving along goaf in fully mechanized top coal caving and the supporting plan of high strength bolt, and applied it to engineering practice, and achieved good technical and economic results.