CAJ | 학술논문

针对霍州煤电三交河煤矿大采高工作面末采阶段顶板控制现状，根据该阶段是否发生周期来压及顶板断裂位置的不同，将末采覆岩空间结构划分为终采线后方断裂、煤壁上方断裂和回撤通道上方断裂3种类型，在此基础上，建立了通道基本顶在给定变形条件下直接顶的力学模型，运用能量原理及变分法对通道直接顶下沉量进行求解，计算结果与现场实测数据一致。研究结果对大采高综采工作面回撤通道顶板控制具有一定的指导意义。
침대곽주매전삼교하매광대채고공작면말채계단정판공제현상，근거해계단시부발생주기래압급정판단렬위치적불동，장말채복암공간결구화분위종채선후방단렬、매벽상방단렬화회철통도상방단렬3충류형，재차기출상，건립료통도기본정재급정변형조건하직접정적역학모형，운용능량원리급변분법대통도직접정하침량진행구해，계산결과여현장실측수거일치。연구결과대대채고종채공작면회철통도정판공제구유일정적지도의의。
To counter to the present status of roof control in the fully mechanized coal face with large mining height in the unmined stage in Sanjiaohe Mine of Huozhou Coal Electricity Group Co. , Ltd. , the overburden rock space in the unmined district was divided into three cases of the rupture behind the mining-stop line, the rupture above coal wall and the rupture above the withdrawal passageway according to the occurrence of periodic weighting in this stage and the different roof rupture positions. On this basis, a mechanical model of the immediate roof of the passageway under a given deformation condition was established, the immediate roof convergence of the passageway was calculated by using the energy principle and variational method, and the calculated results agreed well with the measured data. This research result has a certain theoretical guiding significance for the roof control of the withdrawal passageway in the fully mechanized coal face with large mining height.