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- three soft coal layers 三软煤层
- Practice on the roof controlling in "Three soft" coal layer artillery mining coal work face “三软”煤层炮采放顶煤工作面顶板控制的实践
- "three soft" coal layer “三软”煤层
- The technology of super long coal face in three soft layers can be realized to excavate safely and effectively by the measurement in site. 通过现场实测表明三软煤层中布置超长工作面能够实现安全高效生产。
- Keywords three soft” coal eams;bolting support;construction management;result analysis; “三软”煤层;锚杆支护;施工管理;效果分析;
- Keywords three soft coal seam;concentrated force;creeping way;infusing water to prevent outburst; 关键词三软煤层;集中应力;蠕变状态;注水防突;
- Synthetic research of the control of the end-face of fully mechanized sub-level caving mining on the condition of soft coal layer 软煤综放面端面控制综合研究
- Soft coal burns with more flames than hard coal. 烟煤燃烧时火焰较无烟煤多。
- But the pubic only has soft coal, no any char. 可公家只有烟煤，没有干炭。”
- three soft coal roadway 三软煤巷
- three soft coal seams “三软”煤层
- three soft coal seam 三软煤层
- We also supply blind coal and soft coal from China and Indonesia. 煤炭产品主要是无烟煤与有烟煤等。
- In the stone coal layer and the overlying black shale, there is a pyrite layer. 在石煤层或其上部的碳质页岩中含黄铁矿层。
- Coal layers of Mine Liangjia in Longkou zone are Cenozoic tertiary soft rock layers, are consisted of mudstone, mudstone with oil rock, clay stone, mudstone with carbon, oil shale and coal layers. 摘要龙口矿区梁家煤矿煤系地层是新生代下第三系沉积的软岩地层，主要由泥岩、含油泥岩、粘土岩、炭质泥岩、油页岩和煤组成，是我国典型的三软煤系地层。
- There is a coal layer on the clay of direct roof.This layers is unstable and easy tofall down after mining and enable the gas to gush out. 团溪锰矿的直接顶板粘土之上有一煤层，且不稳定，采后容易垮落，造成瓦斯涌出。
- One in every two colas and one in every three soft drinks is a Coca-Cola product (Facts, Figures, and Features 16). 每两个可乐，一个在每三个软饮料是可口可乐公司的产品（事实，数字，和特点16 ） 。
- The heat insulation layers are mainly the red sandstone rock, coal layer, mudstone rock of the Xujiahe Group, the Jura Upper Trias System.P... 大气降水通过岩溶槽谷下渗至热储层 ,在深部沿断裂构造线由北向南迳流 ,并在地表减压最大处 ,如河谷地段等 ,排出地表而形成温泉。
- The oil shales are associated with and lie on a coal layer of turfy-swampy facies. 煤层顶部发育的巨厚湖相劣质油页岩;分布广;层位稳定;含油率<3.;5%25。
- Combined with engineering examples introduce the application of the technology of high performane bolting with wire mesh along double gob-side entry in three soft seam. 结合工程实例介绍“三软”煤层双沿空掘巷高性能锚杆锚带网支护技术的应用。
