排序方式: 共有26条查询结果,搜索用时 0 毫秒
1.
Analyzed the support instable mode of sliding, tripping, and so on, and believed the key point of the support stability control
of fully mechanized coal caving face with steep coal seams was to maintain that the seam true angle was less than the hydraulic
support instability critical angle. Through the layout of oblique face, the improvement of support setting load, the control
of mining height and nonskid platform, the group support system of end face, the advance optimization of conveyor and support,
and the other control technical measures, the true angle of the seam is reduced and the instable critical angle of the support
is increased, the hydraulic support stability of fully mechanized coal caving face with steep coal seams is effectively controlled.
Supported by the National Natrual Science Foundation of China(50504014) 相似文献
2.
3.
4.
5.
6.
7.
分析了王庄矿边角煤赋存情况,通过对比确定了以放顶煤作为边角残煤回采的主要方法。基于投入产出原理的经济评价和模糊综合评价理论,分别对采煤方法适用性和煤层地质条件开采工艺性做了定量分析。将模型应用于王庄煤矿的边角煤回收工程,确定合适的面长、盈亏平衡储量及放顶煤开采工艺,取得了满意的经济指标。 相似文献
8.
9.
10.
结合我国煤矿生产实际,提出了巷道机助绘图的数据结构模型及实现过程和方法,并介绍了其应用实例。系统充分利用煤矿现有地质测量台帐,数据编辑简单,绘图速度快、精度高。 相似文献