longwall mining

用法例句

China rely mainly on underground mining ,and longwall mining is play ing important roles in coal mining in China.

综述我国长壁采煤法的基本情况 ,重点分析长壁采煤法技术进展、长壁开采设备发展趋势和长壁开采技术在厚煤层中的应用 ,同时介绍了我国高产高效矿井长壁开采技术和经验。

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。

Longwall mining along the dip of the unstable coal seam and strata control

不稳定煤层倾斜长壁开采及矿压控制

Study on Ground Pressure Characteristic of Shallow Coal Seam Longwall Mining and Its Safe Exploitation Demarcation;

浅埋煤层长壁开采矿压特点及其安全开采界限研究

Analysis on the damage zone of overlying strata and safety layer distance on the upward mining above the longwall goaf

长壁开采上覆岩层损伤范围及上行开采的层间距分析

Research on Aquiclude's Broking Law of Longwall Mining in Shallow Seam;

浅埋煤层长壁开采隔水层破坏规律研究

Analysis on Roof Structure s Stability of Longwall Mining in Shallow Seam;

浅埋煤层长壁开采顶板结构稳定性分析

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

Study on Longwall Mining Pressure and Control Beneath the Area Mined with Longwall-Pillar Method in Ultra-Close Multiple-Seams;

极近距离煤层刀柱采空区下长壁开采矿山压力及其控制研究

advance workings

长壁前进式全面开采法;超前巷道;前进式开采面

Application of inchined longwall and overhead mining technology in large tilt angle coal seam mining

倾斜长壁仰斜开采技术在大倾角煤层中的应用

Analysis of filling effect and filling ratio of backfill mining in longwall face

长壁工作面充填开采的充填比与充填效应分析

The effect of water-block for the bearing structure in main roof rocks due to mining in steep long-wall seam

急倾斜长壁工作面开采老顶平衡结构阻水性能

Practice and knowledge in the mechanization dip longwall mining in Jixi coal area

鸡西矿区倾斜长壁综合机械化开采的实践与认识

Analysis and technological measures for longwall topple mining process at the big inclined angle seam

大倾角煤层倾斜长壁仰斜开采工艺分析及技术措施

A Study on Rock Pressure of Ascending Order in Mining Adjacent Gypsum Seams with Long Wall Picking Fill

近距离石膏矿层长壁充填法上行开采的矿压研究

Research on Longwall Rigid Separating Pillar Mining Technology of Small Colliery in YSF Field;

榆神府矿区小煤矿长壁布置刚性隔离煤柱房柱式开采研究

Study on Optimization Design and Destruct Monitoring Character of Coal Pillar in Longwall Remaining Coal Pillar Support Mining;

长壁留煤柱支撑法开采煤柱优化设计及破坏的可监测性研究

Test Study on the Law of Drawn-out Body of Top Coal in Fully-mechanized Top Caving Face in Steeply Seam;

大倾角长壁综放开采顶煤放出体变化规律实验研究

Theoretical and Applied Study on the Strip-Filling Mining Technology Using Cementing Gangue in Long-Wall Face of Coal Mine

井下长壁工作面矸石胶结条带充填开采的理论与应用研究