1.
Basic Study on Technology of Pre-blast Weakening Hard Top-coal in Fully Mechanized Caving Faces;
综放开采坚硬顶煤预先爆破弱化技术基础研究
2.
Test on Hard Top Coal Pre-Blasting and Weakening for High Gassy Fully Mechanized Top Coal Caving Mining Face
高瓦斯综放面预先爆破弱化坚硬顶煤试验
3.
Application Study on Pre-Weakening Hard Top-coal in Fully Mechanized Caving of No.1 Honghui Coal Mines;
红会一矿综放开采坚硬顶煤预先弱化技术应用研究
4.
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
5.
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
6.
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
7.
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
8.
Determination of Pressure Step for Hard Roof at XV2306 Working Face in Wangtaipu Coal Mine
王台铺煤矿XV2306工作面坚硬顶板来压步距确定
9.
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
10.
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
11.
Research on the Tunnel Supporting and Propriate Coal Wedre Preserving under the Provide of the Upper Plate of Qiling Coal Mine;
七岭煤矿坚硬顶板条件下巷道支护及合理煤柱留设研究
12.
The first caving roof sections in hard coal layers can effectively reduce the pressure during the course of caving and guarantee safe production and efficiency.
坚硬煤层顶板分段初次放顶,能够有效缓解放顶期间的顶板压力,保证安全生产,提高生产效率。
13.
Gas Control in the Upper Corner of Working Face under Hard Roof
坚硬顶板条件下大采高小煤柱回采工作面上隅角瓦斯治理
14.
Hard roof prone to bump coal seam:regularity of electro-magnetic radiation,its prediction and application
坚硬顶板易冲击煤层电磁辐射规律及其预测应用
15.
Study the technique of caving hanging roof in the condition of hard roof of room-and-pillar mining.;
房柱式开采坚硬顶板条件下悬顶放顶技术研究
16.
STUDY OF CONTROL CAVING METHODS AND REASONABLE HANGING ROOF LENGTH ON HARD ROOF
坚硬顶板控制放顶方式及合理悬顶长度的研究
17.
The technology experience and economic result of strong and difficult collasp roof manage in Xinan Coal Mine are introduced.
介绍了新安煤矿在坚硬、难放顶板管理方面的技术经验及取得的主要技术经济效果。
18.
Research on Equipments Coordination for Shearer in Soft Coal Thin Seam with Hard Roof
硬顶软煤薄煤层滚筒采煤机设备配套研究