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大直径水平长钻孔
相关语句
  the large diameter horizontal long drilling hole
     The industrial test and thought about the large diameter horizontal long drilling hole
     煤矿坑道大直径水平长钻孔的工业性试验及思考
短句来源
  large diameter horizontal long drilling hole
     The industrial test and thought about the large diameter horizontal long drilling hole
     煤矿坑道大直径水平长钻孔的工业性试验及思考
短句来源
     It is introduced that the industrial test about large diameter horizontal long drilling hole, and put forward personal viewpoint to question met on test.
     介绍了煤矿坑道大直径水平长钻孔的工业性试验情况。
短句来源
  “大直径水平长钻孔”译为未确定词的双语例句
     Application of gas drainage technology with large diameter horizontal borehole to Qianqiu Coal Mine
     大直径水平长钻孔瓦斯抽放技术在千秋煤矿的应用
短句来源
     The paper introduced the technical method and benefits of the gas drainage with large diameter horizontal long boreholes applied to No. 21121 fully mechanized top coal caving mining face in Qianqiu Mine.
     介绍了千秋煤矿21121综放工作面利用大直径水平长钻孔抽放瓦斯的技术方法和效果。
短句来源
  相似匹配句对
     The industrial test and thought about the large diameter horizontal long drilling hole
     煤矿坑道直径水平钻孔的工业性试验及思考
短句来源
     It is introduced that the industrial test about large diameter horizontal long drilling hole, and put forward personal viewpoint to question met on test.
     介绍了煤矿坑道直径水平钻孔的工业性试验情况。
短句来源
     Application of gas drainage technology with large diameter horizontal borehole to Qianqiu Coal Mine
     直径水平钻孔瓦斯抽放技术在千秋煤矿的应用
短句来源
     On Quick and Reliable Determination of Pile Load-Carrying Capacity for Three Tall Xi'an Buildings
     直径钻孔灌注桩的受力性能分析
短句来源
     Construction technology of large diameter and long bored piles and construction machines are introduced in this paper. 
     介绍直径钻孔桩施工工艺及施工机具。
短句来源
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It is introduced that the industrial test about large diameter horizontal long drilling hole, and put forward personal viewpoint to question met on test. Totally four hole had been executed using directional drilling technology. Two drilling hole depth is more than 800 m, and the longest drilling hole is 865 m in length, drilling hole diameter is up to 153 mm, the highest sheet drilling speed is up to 28 m/h.

介绍了煤矿坑道大直径水平长钻孔的工业性试验情况。试验中使用定向钻进技术施工了 4个钻孔 ,两个钻孔长度达到 80 0m以上 ,试验钻孔最深 86 5m ,其中 85 5m保持在煤层中连续延伸 ,孔径 15 3mm ,最高时效达到 2 8m/h。文中还对试验中遇到的问题提出了自己的见解。

The paper introduced the technical method and benefits of the gas drainage with large diameter horizontal long boreholes applied to No.21121 fully mechanized top coal caving mining face in Qianqiu Mine.The paper made a comparison of the advantages and disadvantages between the gas drainage at high level with boreholes in rock strata and the gas drainage at low level with high level boreholes.The results showed that the gas drainage technology at a high level with large diameter horizontal long boreholes would...

The paper introduced the technical method and benefits of the gas drainage with large diameter horizontal long boreholes applied to No.21121 fully mechanized top coal caving mining face in Qianqiu Mine.The paper made a comparison of the advantages and disadvantages between the gas drainage at high level with boreholes in rock strata and the gas drainage at low level with high level boreholes.The results showed that the gas drainage technology at a high level with large diameter horizontal long boreholes would have a high drainage flow,high borehole efficiency,stable drainage result and other advantages.

介绍了千秋煤矿21121综放工作面利用大直径水平长钻孔抽放瓦斯的技术方法和效果。比较了高位钻场岩石钻孔抽放与低位钻场高位钻孔抽放的优缺点,得出了采用高位钻场大直径水平长钻孔瓦斯抽放技术具有抽放流量大,钻孔利用率高,抽放效果稳定等优点。

 
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