medium bedded是什么意思

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Selection of minning technology,support method and parameters of medium-thick seam is introduced.

介绍了中厚煤层一次采全高的回采工艺、支护方法和具体参数的选择,即工作面回采时不留底煤,增加煤炭回收率,对支柱布置形式进行改进,并在理论上进行安全系数验算。

The article introduces the shortwall mining method along strike in medium-thickness seam with great dip angle,which is based on individual hydraulic prop and has brought great economic effect.

在大倾角中厚煤层推行走向短壁采煤方法,使用单体液压支柱,取得较好的技术经济效果。

The authors elaborate the application of longwall mining with descentional ventilation at 7327 working face in the medium-thickness seam with big dip-angle,and point out the ways of fire prevention by giving even air pressure,burying pipe and gelatinizing,and using atomizing inhibitor.

论述沛城煤矿7327回采工作面大倾角中厚煤层下行通风长壁开采,采用均压、埋管注胶、雾化阻化剂等防灭火措施及效果,提出了采煤工作面大倾角中厚煤层长壁开采的防灭火方法。

Theoretical determination of the section coal pillar's reserve-width in medium thick coal seam

中厚煤层区段煤柱留设宽度理论确定

The adaptability of full-mechanized powered support in medium thick coal seam under the geology condition of coal seam in Wanbei minefield is studied and the rule of support design,equipment selection and mating in working face and the safety and technology measures in use are put forward.

结合国内外液压支架发展趋势,研究了皖北矿区煤层地质条件下,中厚煤层综采工作面液压支架适应性,提出液压支架设计、工作面设备选型配套原则以及使用中应采取的安全技术措施。

The specific calculated data of mining technology in the steeply pitching medium thick coal seam and it\'s application effect in real construction are introduced.

介绍了急倾斜中厚煤层回采工艺的具体计算数据,以及在实际施工中的应用效果;同时介绍了采后沿空留巷的施工方法。

Observation on the intima media thickness of the carotid artery and endothelium-dependent vascular dilation function of brachial artery in patients with periodontiti;

牙周炎患者颈动脉内膜中层厚度与肱动脉内皮依赖性血管扩张功能的观察

Theoretical determination of the section coal pillar's reserve-width in medium thick coal seam

中厚煤层区段煤柱留设宽度理论确定

mechanized heading development

机械化平巷开采中厚煤层法

On Technology with Gas Prevention and Control of Gob-side Roadway Excavation in Medium-thickness Seam;

中厚煤层沿空掘巷瓦斯防治技术初探

Support Technology of Roadways Driving in Steep Middle Thick Coal Seam

急倾斜、中厚煤层巷道掘进支护技术

"Three soft" in thick Coal Comprehensive mechanization mining stent selection of importance

“三软”中厚煤层综采支架选型的重要性

Application of Split-top Beam Suspended Support in Slope and Middle Thick Coal Seam

分体顶梁悬移支架在倾斜中厚煤层中的应用

On fully-mechanized long-wall face coal mining technology for thin and rather-thin middle-thick coal seam

薄及较薄中厚煤层综合机械化长壁开采研究

Opening roadway along the goaf in the middle- thick coal seam in GeQuan Mine

葛泉矿中厚煤层沿空留巷矿压观测与分析

Practice on Fire Prevention at Longwall Working Face in Medium-thickness Seam with Big Dip-Angle

大倾角中厚煤层长壁回采工作面防灭火实践

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

Water Environmental Effects Caused by Rapid Slice Mining for Medium-Thickness Coal Seam Under Water Body

水体下中厚煤层分层快速综采的水环境效应研究

Mining Technology of Thinner Coal Seam at Yu Jia-liang Coal Company

榆家梁煤矿中厚偏薄煤层的开采技术

Application of wave impedance inversion in coal seam thickness prediction

波阻抗反演在煤层厚度预测中的尝试

Application of low caving coal hydraulic support in thick coal seam with large tilt angle

低位放顶煤液压支架在大倾角厚煤层中的应用

The anchor net supporting application in high seam tunneling of Sanyuan coal industry

锚网支护在三元煤业厚煤层巷道掘进中的应用

The Research of Reasonable Setting up Pillar Coal to Prevent Sand from Collapsing in the Moderate and Thick Unconsolidated Formation;

中厚松散层下防砂（塌）煤柱合理留设研究

Stress concentration role mechanism of ultra thick seam to cause pressure bumping

巨厚煤层应力集中诱发冲击矿压的作用机理

Long Borehole Gas Pre-pumping Applied Research on Thick Coal Seam Groups with Coal and Gas Outburst

长钻孔在煤与瓦斯突出厚煤层群瓦斯预抽中的应用研究