| 1. | The international market for directional drilling equipment
水平定向钻进设备的国际市场 |
| 2. | 8th annual horizontal directional drilling survey in usa
第8次美国水平定向钻进市场调查 |
| 3. | Directional drilling attitude measurement and azimuth correction with accelerometers and magnetometers
基于加速度计和磁强计的定向钻进姿态测量及方位校正 |
| 4. | Application of ddm - mecca directional drilling monitoring system in drilling construction of underground coal mine
定向钻进监测系统在煤矿井下钻孔施工中的应用 |
| 5. | Horizontal directional drilling and microtunneling - a comparison of two successful pipe - laying methods with regard on their strengths and weaknesses
水平定向钻进和微型隧道掘进两种技术的比较 |
| 6. | The basic conditions of verifying bore in wutunsuo mine , plans of rectifying deviation , installation and use of mwd directional drilling system , and problems encountered in construction are narrated
摘要叙述了武所屯井检孔的基本情况，钻孔纠斜方案， mwd定向钻进系统安装与使用以及施工中遇到的问题和解决办法。 |
| 7. | In the way of prophase preparing , this paper emphasizes the importance of full collecting inhering under pipe using no - dig horizontal directional drilling paving in the busy street and emphasizes the exploration technology being the main mean of inhering under pipe . thus it can provide the main pledge measure of under pipe security and operator security
在前期准备方面，本文强调在闹市区采用非开挖定向钻进铺设地下管线时全面收集原有地下管线资料的重要性，强调物探技术是对原有地下管线探查的重要手段，即保证原有地下管线安全性及操作人员人身安全的重要保证措施。 |
| 8. | Trenchless technology given rised to the 20 centuries in abroad 70 ' s empress period , as an new construction technique in paving underground tube line . directional drilling come into being the most potential method because it achieve accuracy designed - area on trenchless technology , so it bring great benefit , especially in complexity pipe line area of city
非开挖铺设地下管线施工技术(简称非开挖铺管技术)是国外二十世纪七十年代后期发展起来的一项管道施工新技术，定向钻进非开挖铺管技术因其高精度的定位能力而成为非开挖四大工法之中最具潜力的技术，在城市管网极为复杂的地区，是其它施工方法难以代替的，社会经济效益尤为突出。 |
| 9. | The local directional drilling is just staring in terrane , the equipments and the technologies ca n ' t satisfy far and far the spot construction needs , according to current circumstance and considing the existed equipments , the author put forward drilling by air hammer in terrane , having designed compounded - drilling tools , and recommended technology parameters . producing experiments have obtained good achievements in economic and in techniques
国内定向钻进铺管技术在岩层只是刚刚起步，设备、工艺远远不能满足现场施工需要，本文针对国内、外岩层定向钻进非开挖设备及工艺现状，结合国内大多施工单位的已有设备，提出岩层空气潜孔锤导向钻进工法，设计了适合岩层钻进的实用钻具，并提出具有针对性的工艺参数，生产性试验取得了良好的经济技术指标。 |
| 10. | For the problem of present engineering no criterion market and industry standard disunity of no - dig horizontal directional drilling under pipe paving , the view is put forward in particularity and security of no - dig horizontal directional drilling pipe paving and in reason using of under resource . it emphasizes engineering method data management and unify layout management of no - dig horizontal directional drilling . and it analyzes technology economic and discuss the development of under pipe directional equipment and put forward new thought and studying aspect of no - dig horizontal directional drilling construction engineering criterion management - the effect of all kinds of tache and factor in the different no - dig directional drilling construction are discussed from a great deal of detail no - dig engineering examples
就当前水平定向钻进铺设地下管线工程市场不规范和行业标准不统一的问题，本文从非开挖水平定向钻进铺管技术特殊性和安全性及地下资源空间的合理利用方面提出了自己的看法和见解，特别强调了对非开挖定向钻进铺管工程技术资料的管理和非开挖施工工程的统一规划管理的问题，并对非开挖水平定向钻进施工进行了技术经济分析，并就非开挖施工工程的管线定位的仪器研发进行了分析探讨，为非开挖施工的管线规范管理提出了新思路和研究方向。 |
