1.
The test results and its analysis of deep coal seam and rock sample
深层煤矿床的煤岩样物性测试结果与分析
2.
Coal-mining geological conditions and explorations of deep coal deposits: status and problems
深层煤矿床开采地质条件及其综合探测——现状与问题
3.
The Construction Program of Exposing Deep Seam of in Main Shaft Coal of HU Jia-River Mine
胡家河煤矿主井井筒揭露深厚煤层施工方案
4.
Research and Application of In-seam Deep Borehole Construction Equipment and Technique in Pingdingshan No.10 Mine
平煤十矿本煤层深孔施工装备及工艺研究应用
5.
Key Technology About Deep Mining of Surface Mine with Inclined Coal Seam
倾斜煤层深凹露天矿深部开采关键技术研究
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.
Study on the Coal Pillar Stability of Deep and High Seam Strip-Partial Mining and Its Impact on the Village in Gucheng Coal Mine;
古城煤矿深部厚煤层条带开采煤柱稳定性及对村庄的影响研究
8.
Research and Application of Deep-hole Blasting Antireflection Technique in 3_2 Coal Seam of Qi-nan Coal Mine;
祁南矿3_2煤层深孔爆破增透技术的研究及应用
9.
Deep Alluvium Mine Shaft Drilling Construction Method
深厚冲积层煤矿井筒钻井法施工的探讨
10.
Study on Comprehensive Gas Control Techniques in Deep Mining Area B of Zhangji Colliery
张集矿深部采区B组煤层瓦斯综合治理
11.
Prediction of gas content in deep coalbeds at Fengfeng Dacheng Kaiping mining areas
峰峰、大城、开平矿区深部煤层含气量预测
12.
Study on Mechanized Top-caving Extraction and Gas Preventing Technique in Nantun Deep Uphill Soft Seam;
南屯煤矿深部仰斜松软煤层综放开采瓦斯防治技术研究
13.
Graphite deposit of Heye was formed by metamorphism of the Permian coal bed.
荷叶石墨矿是由二叠系煤层变质而成的石墨矿床,石墨与煤呈同层异矿关系。
14.
It is used when mineral deposits are under a shallow, easily removed overburden, and when the vain of ore or seam of coal runs more or less horizontal to the surface.
它适用于矿床埋藏较浅，覆盖层容易剥离，矿脉(煤层)走向与地表大致平行的矿床。
15.
Technical Discussion on Safety Coal Mining Under Rich Water Bearing Body of River Bed in Guanzigou Mine
罐子沟煤矿河床区强含水层下安全采煤技术探讨
16.
The lime-stone rocks bed up against the coal.
石为岩层紧靠着煤矿层。
17.
Zhangji ore B group of coal bed depth portion working area gas comprehensive program of public order engineering research
张集矿B组煤层深部采区瓦斯综合治理技术研究
18.
An area in which deposits of coal are found.
煤矿区发现煤矿层的区域