1.
Strata Behavior Features of Fully Mechanized Top Coal Caving Mining Face in Ultra Thick Seam with Hard Roof in Binchang Mining Area
彬长矿区坚硬特厚煤层综放面矿压显现特征
2.
Research on the Top Coal Caving and Drawing Characteristics of Caving Roof Coal Mining for Shallawly Buries and Hard-Thick Coal Seam;
浅埋藏坚硬特厚煤层放顶煤开采顶煤冒放性研究
3.
Study on Technology of Hard and Thick Top-coal Weakening in Fully Mechanized Caving Faces in Binchang Mining District;
彬长坚硬厚煤层综放开采顶煤弱化技术研究
4.
Rock pressure of high angle thick coal seam by numerical calculation
大倾角坚硬顶板厚煤层矿压规律数值计算
5.
Study on the Reasonable Retainning of the Waterproof Coal Pillar of Steep Medium & Thick Coal Seam with Hard Roof;
急倾斜坚硬顶板中厚煤层防水煤柱合理留设研究
6.
Research on Mining Method in Shallow and Adamancy Coal Seam of Xiegou Coal Mine in Xingxian Area
兴县矿区斜沟煤矿浅埋深坚硬厚煤层开采方法研究
7.
Probing into Mine Fire Prevention and Control Technology in Special Thick Coal Seam with Hard Rock and Hard Coal in Datong;
“两硬”条件特厚煤层综放开采防灭火技术探讨
8.
Study and Application on Stability of Hard and Massive Overlying Strata in Fully Mechanized Sublevel Caving Face;
综采放顶煤采场厚层坚硬顶板稳定性分析及应用
9.
Key Technologies on Fully Mechanized Top Coal Caving Mining of Ultra Thick Seam in Tashan Mine
塔山煤矿特厚煤层综放开采关键技术
10.
Plowability of plow mining on thin and soft coal seam with hard roof
坚硬顶板松软薄煤层刨煤机开采可刨性研究
11.
Study on the Roof Bedding Separation and Anchoring Effect of Extremely Thick Coal Seam Large Section Roadway;
特厚煤层大断面煤巷顶板离层及锚固效应研究
12.
Technology and Control of First Roof Caving at Fully Mechanized Coal Face with Hard and Massive Overlying Strata
厚层坚硬顶板综采工作面初次放顶技术管理
13.
Research on Improving mining Rate in Fully Mechanized Top Coal Caving Face with Shallow Hard Thick Coal Seams and Its Practice
浅埋硬厚煤层提高综放采出率的研究与实践
14.
New Research on Overlying Coal Seam Effects Induced by Nether Super-thick Coal Seam Exploitation in Coal Group
煤层群下伏特厚煤层综放开采对上覆煤层影响的技术探讨
15.
evergreen aromatic shrubby tree of southeastern United States having small hard berries thickly coated with white wax used for candles.
美国东南的常青芳香灌木树种，有小的硬的厚厚涂层的坚果。
16.
Reasonable Mining Height of Full-mechanized Caving Mining in Softly Inclined and Extra-thick Coal Seam
缓倾斜特厚煤层综放开采合理开采厚度的确定
17.
Safety top-coal-caving of heavy and steep coal seams under complex environment
复杂环境下急倾斜特厚煤层安全开采
18.
Solution of High Gas Harder Coal Mining by Deep High-pressure Water
利用深孔高压注水解决高瓦斯较坚硬煤层开采