1) guided boring
导向钻进法
1.
The mechanical characteristics of the three wing back reamer used in guided boring in difficult formation is examined.
分析了导向钻进法用三翼回拉扩孔钻头在复杂地层条件下的力学性质 ,推导了计算不同岩石的最优切削角公式 ,并得出常见岩石的最优切削角值 ,进一步对回拉扩孔钻头的结构形式提出了优化 ,为导向钻进法回拉扩孔施工达到最优钻进 ,提供了必要的力学计算依
2) pilot drilling
导向钻进
1.
2 Mine used small-diameter pilot drilling,then gradually reaming the borehole and finally completed to designed size.
宣东二号矿布设施工的大口径瓦斯抽放井以小口径导向钻进,后逐级扩孔成井。
3) Guided Boring
导向钻进
1.
Study of automation system of no-dig guided boring track;
非开挖导向钻进轨迹自动控制系统的研究
2.
In this article,authors introduce the technique principle of trenchless laying pipe by guided boring.
介绍了导向钻进非开挖铺管技术的工艺原理,并结合工程实例,对利用此技术遇到的技术难点及采取的措施进行了论述。
3.
The paper has introduced principle and drilling method of guided boring trenchless technology,and analysed applied examples and effects of this technology in Fengcheng City of Jiangxi Province,and showing that technology is an effective method of pipeline installation in underground pipeline engineering.
简要介绍了导向钻进非开挖施工技术的原理与施工方法。
4) directional drilling
导向钻进
1.
This paper discussed the non-digging directional drilling and laying technique with a pipeline engineering crossing the South Fei River as example.
非开挖铺管技术是在不开挖地面的情况下,准确而快捷地穿越城市通路、铁路、建筑物、河流等地段铺设和更换地下管线的一项新技术本文结合穿越合肥南淝河管道工程的实践,对非开挖导向钻进铺管施工技术进行了探
2.
Combined with engineering case study,introduced non-excavating piping in complicated strata,considered that directional drilling in complicated strata should change drilling bit on time according to strata,and adjust flush fluid as well.
结合工程实例,介绍了复杂地层非开挖钻进铺管实践,认为在复杂地层中导向钻进,应根据所钻地层的情况及时变换适当钻头,并且适时调节冲洗液的性能。
3.
In allusion to issues of large diameter,bit balling plugging,rather slow penetration rate and poor wearing resistant cutting teeth in directional drilling non-excavation pipe laying construction,analyzed reamer configuration and to improve the reamer from 4 aspects of pilot bit,bit nozzle,bit wing and cutting tooth.
针对导向钻进非开挖铺设地下管线施工中回扩钻头存在的口径大、包泥堵钻、进尺缓慢、切削齿不耐磨等问题,对钻头结构进行了研究,并从导向钻头、出水口、刮刀、切削齿等四个方面对钻头进行了改进。
5) directional drilling/duided boring
定(导)向钻进
6) guided/directional drilling
导/定向钻进
1.
The technique of underground pipeline laying with guided/directional drilling is technologically intensive and eco-friendly.
导/定向钻进是一种技术密集型、对环境无害的地下管线铺设技术。
补充资料：CT导向活检三角定位法
CT导向活检三角定位法
介入放射学技术。为了避开重要结构，于CT导向下行斜行间接穿刺的方法。在CT图像上测量病灶至皮肤的距离(a)，在皮肤上测量斜行穿刺点至病灶正上方的皮肤的距离(b)，根据勾股定理和三角函数定理计算斜行穿刺的进针角度(ｗ)和进针的深度(c)，施行准确而安全经皮活检的方法。
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