| Horizontal directional drilling is one of the most vigorous new non-excavation construction technology. It has a lot of merits such as accurate orientation environment-friendly, high efficiency, safe, fast construction speed, long crossing distance and depth. It can be used to build or renew a wide range of pipelines such as an oil-gas pipeline, water supplying or drainage pipeline, heating pipeline, power cables, telecommunication cables. It has played a significant role in the West-East Transportation pipeline project.Horizontal Drilling Graphics Display System is developed for giant horizontal drilling. The underground alignment of drill rod could be seen in the way of graphics for the engineers and technicians on the construction site to have a better understanding of the alignment of the drill rod so that they may have a better control over its direction. The software system has solved the problems involved with manual drafting in directional drilling.The efficiency of the construction crew has been greatly improved along with better economic returns. This dissertation introduces the background information of directional drilling graphics display system as well as the latest domestic and foreign research and development on the software, the significance of my developing directional drilling graphics software in addition to the major work I have done on the project and major problems which have been solved. It analyzes the current situation of directional drilling software in use and provides the solution. It also introduces the main characteristics of the directional drilling graphics display system and its main functions. Moreover, it illustrates two-dimension display technique as well as the ideas and approaches to fulfill the functions of the software with the technique. |