Trenchless Set (guide) To Optimize The Design And Application Of Drilling Borehole Trajectory

With the human being's focus on the environmental protection and project constructed culturally, trenchless technologies, appreciated by the people in all fields, have been made a great development in the past few years. At present, they have been regarded as a very prosperous branch of the construction by the international construction field. On the basis of the analyzing about all kind of no-dig methods, the horizontal directional drilling(HDD) and horizontal guided drilling(HGD) technologies, the most efficient and prosperous categories, are selected by the author as research target, the author gives a systematical research on the drilling trail of HDD and HGD by the means of optimal design method.The main contents of this dissertation are followed: 1?With the analyzing on the fundamental theory and the main characters of HDD and HGD, the author points out the shortcomings about the traditional design method;2?The author analyzes the drilling trail of HDD and HGD, formulates the links between the drilling trail and the position of the block beneath the horizon, and gives the functional formula about drilling trail with the spline function methods;3?With the application of the optimal design method, the author gives the method of searching the optimal drilling trail. At the same time, its correspondent software is programmed.Finally, with the assessment in the practical application, the formula by the spline function and the application of the optimal design method in the drilling trail of HDD and HGD proved to be a good way. In general, the drilling trail with some perfect performances is able to be achieved. These achievements will have two aspect meanings: on the one hand, if this method can be used in the practical construction, the HDD and HGD project would be more convenient and efficient, on the other hand, the method will be some guiding meanings to the automatic construction of HDD and HGD.