论文部分内容阅读
基于降低采煤工作面瓦斯浓度和减少采空区瓦斯涌出的重要性,采用岩石破裂过程分析软件(RFPA~(2D))对鹤壁六矿2115_1顶分层工作面上覆岩层随工作而推进的运动情况进行了数值模拟。从中获取了上覆岩层的运动信息,得到了顶板由变形到损坏的全过程及损坏规律,并用经验公式对覆岩裂隙带高度进行了计算,综合判定工作面上覆岩层的裂隙带高度为12.3～44 m。高位钻场抽采参数优化后,平均抽采量达到6.79 m~3/min。
Based on the importance of reducing the gas concentration in coalface and reducing the gas emission from goaf, rock fracture process analysis software (RFPA 2D) was used to promote the overburden of 2115_1 top layer working face of Hebi No.6 mine The movement of the numerical simulation. The movement information of overlying strata is obtained, the whole process of deformation and damage of roof is obtained, and the damage rule is obtained. The height of strata is calculated by empirical formula. The height of the fractured zone of overburden is 12.3 ~ 44 m. After optimizing drilling parameters, the average drilling capacity reached 6.79 m ~ 3 / min.