offset是什么意思

网络释义

用法例句

Application of hydraulic flushing technology in severe outburst coal;

水力冲孔技术在严重突出煤层中的应用

(Adopting the) measure of hydraulic extrusion at outburst coal seam,stress concentration region of coal seam was moved forward,pressure relief region was widened,and the gas was released ef.

在突出煤层采用水力挤出措施,可使工作面前方煤体应力集中带前移,卸压带增宽,同时大幅度释放了煤体中的瓦斯,取得了明显的防突效果,巷道掘进速度提高了1。

Numerical simulation of the analysis of possibility of water inrush through fault;

断层突水风险的数值模拟

Solid-liquid coupling study on water inrush through faults in coal mining above confined aquifer;

承压水上采煤断层突水的固流耦合研究

The outburst coal seam usually appears to the spray holes phenomenon in the process of eliminating outburst by drilling holes construction.

突出煤层在采用钻孔施工消突过程中,经常出现喷孔现象,造成瓦斯超限,给安全生产带来极大的安全隐患。

It is a new technology developed in recent years using the VLD-1000 drilling rig made in Australia which can drill with the depth of 1 km to drill in an outburst coal seam for pre-pumping gas.

利用澳大利亚生产的VLD—1000型千米钻机,在突出煤层掘进中打钻预抽瓦斯是近几年发展起来的一项新技术。

According to different geological conditions,before using Anti-well technology to drill pilot holes and reaming,the soft coal bunker coal(rock) layer reinforcement and elimination outburst as well as grouting reinforcement of outburst coal seam are necessary.

根据不同的地质条件,采用反井技术施工煤仓前对松软煤(岩)层进行加固,对突出煤层进行先消突后注浆加固,而后利用反井钻机导孔、扩孔,最后采用钻爆法将煤仓刷扩成型。

Developed a new translatory model of coal bumps by adopting Hoek-Brown failure criterion instead of Mohr-Coulomb failure criterion initially proposed by Lippmann H in 1989.

赵各庄矿的实例研究表明,改进后的Lippmann煤层平动突出模型适用于顶底板为岩石的煤巷或半煤岩巷煤层整体冲击的机理分析,为合理确定煤层突出范围度量指标以及煤层整体平动突出倾向性的判定提供了理论依据。

Considering the effect of gas pressure on the coal bumps, the stress of gas-coal is analyzed by means of the elastic-plastic theory.

本文将含瓦斯煤层视作多孔变形介质,利用弹塑性力学的方法建立了考虑瓦斯情况下的煤层突出模型,得到煤层的活动区长度和应力分布的解析解,综合体现了载荷、瓦斯及煤的物理力学性质的共同影响。

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

New Technique of Driving Cross-cut through Coal Seam with High Bursting Danger

高瓦斯突出煤层石门揭煤后过煤门新工艺

Technology and Practices on Deep Mine Shaft Sinking Through Multi Outburst Seam

深立井揭穿多层突出煤层技术与实践

Outburst prevention technique of excavating in coal seam will be directly concerned colliery safety production and excavates taking over.

突出煤层煤巷掘进防突直接关系到煤矿的安全生产和采掘接替。

Research on Gas Occurrence Law and Its Practice in Coal and Gas Outburst Seam

煤与瓦斯突出煤层瓦斯赋存规律及应用研究

Results Analysis on Safety Penetration Improvement Technology for Outburst Seam in Qinan Mine

祁南煤矿突出煤层安全增透技术效果分析

Research And Practice of Exposing Multi-Coal Seam Prominent Technology in Deep Shaft

深立井揭穿多层突出煤层技术研究与实践

Research of Drilling Equipment and Craft for Soft-extrude Coal Along Level Bed

松软突出煤层顺层钻孔装备及其工艺研究

Research on Outburst Danger of Ⅱ_2 Coal Seam in Mengjin Coal Mine

孟津煤矿二_2煤层突出危险性研究

Outburst Comprehensive Prevention Technology for Mine Shaft Sinkin Through Dangerous Seam with Potential Outburst

井筒揭穿突出危险煤层综合防突技术

Study on the Evaluation Technology of Potential Outburst Risk in Coal Seam;

煤层潜在突出危险性评价技术的研究

Outbursts of coal and gas prone is related to the evolution history of deformation and coalification of coal-seams.

煤与瓦斯突出倾向与煤层的变质变形历史有关。

Research on State Stress of Coal Seam and Prevention of Coal and Gas Outburst;

煤层应力状态及煤与瓦斯突出防治研究

Study the Laws about Steep Soft Coal Seam Coal and Gas Outburst;

急倾斜松软煤层煤与瓦斯突出规律研究

Research on Technique of Gas and Fire Disaster Prevention and Control for Gas Burst Thick Coal Seam in Luling Coal Mine

芦岭煤矿突出厚煤层瓦斯及火灾防治技术研究

Comprehensive Technology of Uncovering Loose Coal Seam with Bursting Liability in Inclined Roadway of Hancheng Mining Area

韩城矿区突出松散厚煤层斜巷正揭煤综合技术

Research on Coal and Gas Outburst Prevention Technology During Mine Rock Roadway Heading with Short Distance to Seam

近煤层岩巷掘进中防治煤与瓦斯突出技术研究

Coal and Gas Outburst Danger Evaluation of F_(16,17) Coal Seam Above-850 m in Pingdingshan No.11 Coal Mine

平煤十一矿-850m以上己_(16,17)煤层突出危险性评价