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There are 42 mine wells in four major mine areas, Jixi, Hegang, Shuangyashan and Qitaihe, in Heilongjiang province, China, 70% of which are high gas mine wells. 黑龙江鸡西、鹤岗、双鸭山和七台河四大主要矿区有矿井42个,其中70%25都是高瓦斯矿井。
There are 42 mine wells in four major mine areas,Jixi,Hegang,Shuangyashan and Qitaihe,in Heilongjiang province,China,70%of which are high gas mine wells. 黑龙江鸡西、鹤岗、双鸭山和七台河4大主要矿区有矿井42个,其中70%25都是高瓦斯矿井。
The gas grade appraising in the coal mine is a main approach to estimate whether a coal mine is a low or high gas mine,or coal &gas outburst one,and to prevent gas explosion and mine firing. 矿井瓦斯等级鉴定是确定煤矿属于低瓦斯矿井、高瓦斯矿井还是煤与瓦斯突出矿井以及预防煤矿瓦斯爆炸危险和矿井自然发火危险等的一个重要手段。
Gas Govenance of Blasting Face with Compound Roof in High Gas Mine 高瓦斯矿井复合顶板炮采工作面瓦斯治理
Prediction and Gas Emission Law of Working Face in High Gas Mine 高瓦斯矿井回采工作面瓦斯涌出规律与预测
High Gas Mine Coal Lane Tunnel and Defend the Technology of Dashing for Ward 高瓦斯矿井煤巷掘进防突技术
Practice and recoganition on the question of dealing with gas- leaking in goaf in high gas mine 高瓦斯矿井处理采空区瓦斯泄漏问题的实践与认识
high gas mine 高瓦斯矿井
Pneumatic conveying requires comparatively high gas velocities. 气力输送需要比较高的气体速度。
Well, what the high gas prices have to do with a bottle of tequila? 高涨的油价和一瓶龙舌兰酒究竟有什么关系呢？
At high gas velocities the circulation of solids becomes appreciable. 在高气速时，固体颗粒循环变得显著了。
Through the research of high gas and multi-water-bursting hazards prevention techniques in Jiaozuo coal mine regions, the mining coal method of caving working face is found. 通过对焦作矿区高瓦斯多水害防治技术研究，找出适合该条件下的炮采放顶煤模式的采煤方法。
Through the research of high gas and multi-water-bursting hazards prevention techniques in Jiaozuo coal mine regions,the mining coal method of caving working face is found. 通过对焦作矿区高瓦斯多水害防治技术研究,找出适合该条件下的炮采放顶煤模式的采煤方法。
In recent years, Northwest Sichuan Gas Mine of PCL Southwest Branch, performed the gas drilling for 5 wells such as Well Pingluo 19 etc. in the west Sichuan area. 近年来,中国石油西南油气田分公司川西北气矿先后在川西地区平落19等5口井实施了天然气钻井,实践的数据和结果充分体现了天然气钻井的优越性,取得了良好的勘探效果,并创国内天然气钻井多项新水平。
However, in areas with weaker hydrodynamics, or stagnant area, the coal usually has high gas content. 相反,在水动力不活跃地区或滞流水区域,煤层气的含量就比较高。
Direct expose to flame and high gas veloc-ity and high resistance to erosion-abtasion. 可直接接触火焰，耐高速气流冲刷，抗风蚀能力强；
She is looking for a job in a tight economy, and the high gas prices are crimping her search. 她在收缩的经济中正找工作，而高油价让她的找工也受阻。
Because of crack structure,high gas amount,concentrated stress,soft and broken coal,it's very difficult for tunneling. 巷道在掘进时由于受断裂构造的影响,瓦斯含量大,应力集中,煤体松软、破碎,掘进困难。
Research on feasibility of electric submersible pump application in high gas oil ratio oil well in some oil field block is made. 针对部分高含气油藏的特点,探讨使用潜油电泵的可行性。
The results have some referent value and guiding significance to oil, gas and coal gas mining. 该成果对石油、天然气、煤层气开采具有一定的参考价值和指导意义。