您要查找的是不是:
- lower protective seam mining 下保护层开采
- 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。
- far distance lower protective seam exploitation 远距离下保护层开采
- low protected seam with ultra distance 超距离下保护层
- Similar Simulation Study of Pressure-relief Protection Angle during Extraction of Long-interval Lower Protective Seam 开采远距离下保护层卸压保护角的相似模拟研究
- 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
- A low protective wall or railing along the edge of a raised structure such as a roof or balcony. 低矮挡墙一种沿着如屋顶或阳台而建的低矮的护墙或栏杆
- 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。
- Country 5 protect door, low protect a ginseng to add up to fund to raise money by civil administration branch solve. 农村五保户、低保户参合基金由民政部门筹措解决。
- The use of the parenteral cholera vaccine has never been recommended by WHO due to its low protective efficacy and the high occurrence of severe adverse reactions. 世卫组织从未建议使用注射用霍乱疫苗,因为这种疫苗的保护效率较低,严重不良反应的发生率较高。
- There isn't any grantinaid in the town,but low protect,the disabled people can get the low protect if they are qualified. 我们这里没有残疾人补助金,残疾人被纳入到低保部分。残疾人可以申请低保如果他们符合条件的话。
- 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
- There was a low protecting wall to knock down the heat blast from the pit of the furnace. 有一堵低矮的护壁挡住从炉膛里喷出的热浪。
- 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。
- Toe board means a low protective barrier that will prevent the fall of materials and equipment to lower levels and provide protection from falls for personnel. 踢脚板指的是一种低的保护栅栏,防止材料和设备跌落到较低的平面,并对人员坠落提供保护。