hard heading work是什么意思

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用法例句

It introduced the drift collocation of wetting dustproof system in driving face and the lectotype design of the correlation equipment.

阐述了矿井粉尘的危害及粉尘防治的重要性,介绍了掘进工作面湿式除尘系统巷道布置以及此系统相关设备的选型设计。

This article introduces the situation of using the longhole shock blasting technology to prevent gas and coal outburst in driving face,analyzes the application result.

介绍了在掘进工作面应用深孔松动爆破技术预防煤与瓦斯突出的实施情况,并对应用效果进行了分析。

3422 driving face in Shitai Coal Mine.

淮北矿业集团公司石台煤矿对3422掘进工作面采取了瓦斯综合治理措施,达到了预想的效果。

For gripping the distribution regularities of the dust, based on the theory of two-phase flow of gas and solid,and the characteristics of coal mine driving working face,using the discrete phase models of computational fluid mechanics to simulate the dust concentration during the ventilation process of coal roadway driving with forced ventilation.

为了掌握粉尘的分布规律,根据气固两相流理论,针对矿井掘进工作面的特点,采用计算流体力学的离散相模型(DPM)对压入式通风掘进巷道中粉尘浓度进行了数值模拟。

Basing on the theory of two-phase flow of gas and solid, and the characteristics of coal mine driving working face, using the discrete phase models of computational fluid mechanics to simulate the dust concentration during the ventilation process of coal drift driving with exhaust ventilation.

根据气固两相流理论,针对矿井掘进工作面的特点,采用计算流体力学的离散相模型(DPM)对掘进工作面通风过程中粉尘浓度进行数值模拟,总结抽出式通风掘进巷道中粉尘浓度的沿程分布及变化规律。

Analysis on crossing faults of heading face in outburst seam;

浅析突出煤层掘进工作面过断层

Protection against outburst mechanism of hydraulic extrusion measure in the front of coal road heading face;

煤巷掘进工作面水力挤出措施防突机理

Gas drainage technology for high gassy gateway heading face;

高瓦斯掘进工作面抽放技术

The Research about the Tunneling and Supporting Technologies for the Chambers with Large Cross Section in the Condition of Unstable Rock Surrounding

不稳定围岩条件下大断面硐室掘进和支护的技术探讨

Implemtation and Effect of Roadway Guide-Chamber High-Speed Driving Method at Coal Mines

煤巷导硐法快速掘进实施方法及效果

Design and construction of two-door prevention water gate chamber with high pressure

高压双门硐防水闸门硐室设计与施工

Experimental Research on Safety Protection of Chamber Blasting Charging in High-temperature Chamber

硐室爆破时高温硐室装药的安全防护试验研究

Research on Effect of Pressure Relief for Chambers in Deeply Buried HJ Composite Soft Rocks with Pilot-tunneling Method

深埋HJ复合型软岩硐室导硐法让压效果研究

Due to insufficient maintenance and intensive mining operation, the slope of an open pit mine becomes unstable with serious danger potential to normal operation of the mine and to safety of people's life.

为研究某矿边坡的稳定状况并为边坡的加固工程提供可靠依据，在边坡硐室内进行地应力测量。

A construction of the water dam chamber for isolation between horizontal and up and down seam in a mining district is one of the comment water prevention and control methods.

建造防水闸门硐室，进行水平、区上下组煤隔离，是预防水患普遍采用的方法。

Code for design of chambers around pit-bottom of coal mine

煤矿矿井井底车场硐室设计规范

Code for design of district station and chambers of coal mine

煤矿矿井采区车场和硐室设计规范

Code for design of inclined shaft and chambers of coal mine

煤矿矿井斜井井筒及硐室设计规范

The Influence of Surface Blasting Vibration on Underground Chambers;

地表爆破震动对地下硐室的影响研究

Experience in combined supporting for use in large-span underground chamber under soft roof strata

软岩顶板下大断面硐室联合支护经验

Deep Shaft chamber group dynamic two-dimensional physical model experiments

深立井硐室群动态二维物理模型实验

Failure Mechanism and Stability Control of Deep Mine Caverns

深部硐室群破坏机理及其稳定性控制

Waters of the central substation,pumping chamber design optimization

海域中央变电所、水泵房硐室设计优化

Reinforcement of Repaired Large Section Chamber and Numerical Simulation

返修大断面硐室加固及数值模拟研究

Alternative Integrated Design of Pump House Chambers in Deep Soft Rocks

深部软岩泵房硐室群集约化设计技术

Testing and Analyzing of 5.5 kt Chamber Blasting Vibration

5.5kt硐室大爆破振动测试及分析