The Theoretic Research And Computer Application Of Technology Of Trenchless Guiding Drilling Laying Pipeline

Along with the economic construction of our country has been entered one fast development continuously, input of building of infrastructure is obviously strengthened , while all kinds of project of laying pipeline not to adopt excavate technique increase day by day , trenchless technology have wide market prospects, potentiality is enormous.Trenchless technology is a practical new technology that the advanced science and technology is combined with social demand. Popularize and popularize this technology, accelerate specialization scale of the relevant enterprise, will impel the development and growth of the trenchless technology industry. This new and developing trade will play a great role while developping in the national economic construction in the 21st century of our country.Technology of laying pipeline by guiding drilling of trenchless technology mean a new technological method to control and guide rig to creep into through various kinds of guiding apparatus, lay all kinds of different underground pipelines under the condition of not excavated or excavating few in the earth's surface.This paper aim at guiding drilling basic theoretical research lag behind on reality that project practice at present, on the basis of analysing the technology and principle and researching current situation in detail, through a series of calculation draw the comparatively rational formula of guiding drilling's the most important parameter -pull. It is rational for the gained calculation formula to consider influencing the factor, there is better accuracy, accord with on-the-spot reality, it offer the important mechanics basis for selecting type of the rig.According to the actual conditions that normal standard of selecting guiding drilling's rig at present lack and still depend on experience in many situations, adopt the modern artificial intelligence technology -Case-Based reasoning to solve this problem.On the basis of front research and summing-up guiding drilling's rigs and projects of laying pipeline nation and abroad, develop" guiding drilling's rig optimum seeking system", it provides directive significance for guiding drilling construction.This paper, on the basis of analyzing accurately guiding drilling rod receiving strength state, stresses are calculated, has put forward the computing technology of project. The new formula that drilling rod stress and intensity of drilling rod checked that this paper derived, have important theory meaning and actual meaning.Utilize energy method to research crook problem of drilling rod under pressure and act on together, having studied the crooked influence to the drilling rod of torsion emphatically, the theory analyses found that Axial load, hole vertex angle and torque are important factors of influence drilling rod crook. In consider drilling rod state, hole state, creep into course influence foundation of parameter synthetically, the drilling rodmodel under acting on the pulling force and torsion together carries on the theory to calculate, receive drillingrod pulling force and torsion differential equation group, in order to benefit drilling rod strength further to analyse.Adopt at present most advanced large-scale SUPER SAP finite element structure analyse procedure to go on numerical value calculation for model of drilling rod, drilling rod whole stress simulation of state that receive show and reflect drilling rod various kinds of stresses under different working states distribute the characteristic clearly, make stress state of drilling rod reach visual, make people able to understand informations of drilling rod of stress status in depth too at the same time, so that the design of the improvement drilling rod constantly is in order to meet the demands of actual project.