| This article simply introduced the construction equipment and construction process of theoil and gas pipeline in HDD crossing technique,the construction of geological environment hascarried on the classification and analyzed briefly,Due to the stress complexity and a badservice condition of the drill rod in HDD crossing construction.Therefore, the drill rod wasselected as the research object and analyzed its various stateBased on the theory of mechanics of materials,Introduce the deflection differentialequation,Under the deflection differential equation,the stress of the drill rod in variousconditions are analyzed,find the rule of the stability of the drill rod，and calculated the criticalforce of several kinds of specification drill rod，And during the construction of each length ofdrill rod,bending stress produced by the gravity was calculated and,analyzed.The drill rodmotion state is analyzed in the guide hole.The changeable law is obtained when the drill rod inthe bending moment in the revolution and rotation Finally, in the bend guide hole,the drill rodis analyzed,get the relation between initial deflection and the changes of weight on bitIn addition,the accident of the failure of drill rod in the construction process is a majorcause of failure of construction,conclusion based on stress analysis,analysed the drill rod inconstruction application,and put forward the corresponding Suggestions. |
PDF Full Text Request