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由于沿空留巷与采场在顶板控制方面存在一定的相似性,将沿空留巷看成是一个小范围的采场,从而将采场顶板控制理论应用到了沿空留巷支护领域,研究了沿空留巷支护体的“给定变形”和“限定变形”2种工作状态。通过对沿空留巷支撑体系进行详细的力学分析,建立了支撑体系力学方程,得出了沿空留巷顶板下沉量和巷旁支护充填体压缩量,从而限定了支护体的有效作用条件。通过对工程实例进行理论验证和现场实测,证明了采场顶板控制理论在沿空留巷中应用的可行性,研究结果一定的指导意义。
Because of the similarities between the gob-side entry retaining and roof control in the roof control, the gob-side entry retaining is regarded as a small-scale stope, so the stope roof control theory is applied to the gob- The working conditions of “given deformation ” and “limited deformation ” of support for gob-side entry retaining are studied. Through the mechanics analysis of supporting system of gob-side entry retaining, the mechanical equations of support system are established, and the settlement of gob-side entry retaining roof and gob-side support filling body are obtained, which limits the effective effect of support body condition. Through the theoretical verification of the engineering example and field measurement, it proves the feasibility of stope roof control theory applied in gob-side entry retaining, and the research results are certain guiding significance.