2) directional drilling
定向钻孔
1.
The system is constructed by drilling method and the air intake and the gas outlet are connected by a directional drilling hole.
介绍了对吉林省双阳煤矿边缘部分所遗留的煤层所设计的煤炭地下气化炉 ,该气化炉采用定向钻孔贯通 ,钻孔法建炉 ,通过计算可获得较大的经济和社会效
2.
As a trenchless construction method, directional drilling and PE pipe dragging is uniquely advantageous, with less impact on nearby buildings and traffic, lower cost for maintenance, better protection of the ground services, etc.
定向钻孔拖拉高密度聚乙烯平壁管(HDPE管)作为一种非开挖施工方式,具有对周围构筑物、交通的影响小,维修费用少,对管线的保护作用大等独特的优越性。
3.
Spiral and round curve methods of General Geological Coordinate System have established the basis on which the design of curved or directional drilling can be well calculated .
通用地质坐标系的似螺线法和圆弧线法为设计弯曲和定向钻孔提供了全定量计算的基础,并能在钻孔施工发生偏离时,指导选择钻孔纠斜方案。
4) directional drilling
定向钻井;定向钻孔
5) long hole gas drainage
走向长钻孔抽放
6) big-shift directional drilling
大位移定向钻孔
1.
The method of cement slurry injection through big-shift directional drilling and its technological parameters used in Gaoyang Iron Ore Mine to seal underground water rushing are introduced.
详细介绍了高阳铁矿实施大位移定向钻孔注浆方法和工艺参数,其成功的经验对治理矿山井下突水淹井事故具有一定的参考价值。
补充资料：长岑长
1.《后汉书．崔骃传》﹕"宪(窦宪)擅权骄恣﹐骃数谏之。及出击匈奴﹐道路愈多不法﹐骃为主簿﹐前后奏记数十﹐指切长短。宪不能容﹐稍疏之﹐因察骃高第﹐出为长岑长。"李贤注﹕"长岑﹐县﹐属乐浪郡﹐其地在辽东。"后用以称颂不为权贵所容之官吏。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条