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针对沿空动压巷道在上区段工作面回采,即受到第一次采动影响时的围岩变形破坏特征,分析巷道围岩尤其是围岩弱结构体(护巷煤柱)的破坏失稳机理,并根据现场试验情况,研究沿空动压巷道在第一次采动影响(上区段工作面回采)时的围岩弱结构的控制机理,提出合理的围岩弱结构控制技术与方法,为类似条件下巷道的支护与维护提供参考、借鉴。
In view of the deformation and failure characteristics of the surrounding rock during the mining of the upper dynamic working face in the upper section, that is, the deformation and failure of the surrounding rock affected by the first mining, the failure analysis of the surrounding rock of the roadway, especially the weak structural body of the surrounding rock (retaining lane coal pillar) According to the field test, the control mechanism of the surrounding rock weak structure when the roadway is moving under the influence of the first mining (upper section mining face) is studied, and the reasonable surrounding rock weak structure control technology is put forward Method to provide reference and reference for the support and maintenance of roadway under similar conditions.