pitchwork是什么意思

网络释义

用法例句

In order to reduce the coal loss and increase the rate of recovery,the new mining methods are adopted,which is false inclination mining,top tunnel outward mining,and bottom tunnel outward mining.

为了减少煤炭损失,提高回采率,采取新的回采方式,即伪倾斜开采和上巷前进式、下巷前进式回采,使煤炭损失量降低到最小程度,提高了经济效益。

Research on Damage Mechanism of Floor Rock in Mining Steeply Inclined Coal Seam

急倾斜煤层开采底板岩层破坏机理研究

Study on Numerical Simulation of Ground Movement in Steep Coal Seam Mining;

急倾斜煤层开采地表变形的数值模拟研究

Study on Time Process of Ground Movement in Steep Coal Seam Mining;

急倾斜煤层开采地表移动时间过程研究

Deformation analysis of covering rock masses as mining steep-inclined coal seam and its application

急倾斜煤层开采覆岩变形分析及其应用

Simulation analysis of steep seam mining under rainfall condition

降雨条件下急倾斜煤层开采的仿真分析

Study on the Rule of Ground Movement and Deformation in Steep Coal Seam Mining of Urumchi Mining Area;

乌鲁木齐矿区急倾斜煤层开采地表移动变形规律研究

Analysis of Mining Steeply Inclined Coal Seam with Bursting Risk in Small Colliery

小煤矿急倾斜突出煤层开采方法探析

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

Combin gateway and pillar with fully mechanized top cawing mining technology in steep inclined special thick seam

急倾斜较薄特厚煤层巷柱-综采放顶煤开采技术

Study on Technology of Top-coal Caving Mining of Lane Pillar in 3.5～10m Steeply Inclined Coal Seam;

3.5～10m急倾斜煤层巷柱式放顶煤开采技术研究

Mechanism of Water-Coal Mixture Burst in Exploiting Steeply-Inclined Thick Coal Seam

急倾斜厚煤层开采水煤体溃泄机理研究

Simulation Research on the Surface Moving Rule Due to Mining in Steep and Multiple Coal Seams;

急倾斜多煤层开采地表移动规律模拟研究

Research on the Rule of Surface Movement and Deformation Caused by Strip Mining in Steep Seam;

急倾斜煤层条带开采地表移动与变形规律研究

Research on Deformation Monitoring of Surrounding Rock in Large Section-height Full-mechanized Caving Mining Steeply Inclined Coal Seam

急倾斜煤层大段高综放开采围岩变形监测研究

Numerical Simulation Study on Surrounding Rock Deformation in Large-sectional Mining of Steep Seam

急倾斜煤层大段高开采围岩变形数值模拟研究

Study on Gateway Top Caving Technology for Steep-inclined Coal Seam

急倾斜煤层巷道放顶煤回采工艺研究

Study on Key Issues Existed in Exploiting Steep-Incline Upper-Protective Multi-Layer with a Bow Pseudo-Incline Technique

急倾斜多煤层俯伪斜上保护层开采的关键问题研究

Comprehensive analysis of coal break on steep and thick coal seam 102m section

急倾斜厚煤层102m阶段煤体综放开采煤体致裂综合分析