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- In solving the problem of deformation in surrounding rocks of the overlying coal entry caused by upper protective seam mining, reinforcing the surrounding rocks by grouting is a feasible method. 摘要为了解决下保护层开采对上覆煤层巷道围岩变形的影响,采用注浆加固巷道围岩是一种可行的方法。
- lower protective seam mining 下保护层开采
- protective seam mining 保护层开采
- Abstract: The influence factor of spontaneous ignition on coal seam mining and protective measures in Yangquan mine No.3 shaft are approached. 文摘:分析了阳泉矿区三矿井田煤层开采对自燃着火的影响因素,探讨了预防煤层的自燃着火的开采技术措施。
- The influence factor of spontaneous ignition on coal seam mining and protective measures in Yangquan mine No.3 shaft are approached. 分析了阳泉矿区三矿井田煤层开采对自燃着火的影响因素,探讨了预防煤层的自燃着火的开采技术措施。
- protected seam mining 保护层开采
- Water-coal mixture burst is a new mine disaster in exploiting steeply inclined thick coal seam mining. 摘要急倾斜厚煤层开采时发生的水煤体溃泄是一种新的矿井灾害。
- In the process of Shanxi formation seam mining in Shaqu Colliery,the seam roof and floor sandrock aquifers constitute the direct discharge aquifers. 沙曲煤矿山西组煤层开采过程中,煤层顶底板砂岩含水层构成煤层开采时的直接充水含水层。
- Intoduces that uses breeding fire prevent and cure technology to reduce distribution air volume, quicken workface promoted speed, in high seam mining, it may remove breeding fire accidents in roadway. 介绍了厚煤层开采中采用减少配风量、快工作面推进速度、少采空区遗煤、空区灌浆、氮、采结束的采空区防火技术,能够消除巷道自燃发火事故。
- Based on the recent years mining practice,study the technical management problems in thick seam mining,accumulate some actual experiences in roof management in thick seam,adopt the efficient technical measures and achieve the good result. 通过多年的开采实践 ,作者着重研究了厚煤层开采的技术管理问题 ,在厚煤层开采顶板管理方面积累了一些实际经验 ,采取了行之有效的技术措施 ,收到了较好的效果
- far distance lower protective seam exploitation 远距离下保护层开采
- In this paper,the experiment of mining following cutting rock fill with level delamination and cementation floor for inclined seam mining in Maozaiwan mine area,Tongshanling Mine is introduced. 介绍了水平分层胶结底板上向分采充填法在铜山岭矿猫崽湾矿区倾斜极薄矿脉中的开采试验情况。
- Intoduces that uses breeding fire prevent and cure technology to reduce distribution air volume,quicken workface promoted speed,in high seam mining,it may remove breeding fire accidents in roadway. 介绍了厚煤层开采中采用减少配风量、加快工作面推进速度、减少采空区遗煤、采空区灌浆、注氮、回采结束的采空区防火技术,能够消除巷道自燃发火事故。
- This mining technology is innovations in the layout of this kind working face,mining method and technologies act and solves many technological difficult problems for the thin coal seam mining. 该开采技术在工作面巷道布置、开采机械、采煤方法、回采工艺等开采技术上进行综合创新,解决了薄煤层开采的技术难题。
- Through comparing calculation of two plan which are mining overall height in one times and shise mining, the optimum one suitake for thick coal seam mining in Dongrong No.3 Coal Mine is determined. 通过一次采全高和分层开采两个方案的比较计算,功定了适合东荣三矿厚煤层开采的最佳方案。
- Forecast of the gas effused from the face in protective seam 保护层开采工作面瓦斯涌出量预测
- A mother naturally feels protective towards her children. 母亲对自己的孩子自然会悉心保护。
- Practice of Gas Control in Protective Seam Face at Deep Level 深水平保护层工作面瓦斯治理实践
- They netted the fruit trees to protect them from birds. 他们用网覆盖住果树以使其免遭鸟害。
- Inclined Medium-thickness Seam Mining Method 急倾斜中厚煤层开采方法