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分析水平定向钻施工技术的特点与适用条件。对水平定向钻的关键技术问题(定向钻机回拖力计算、钻进液作用与用量、钻进液废浆的处理)以及热力管道水平定向钻施工中的注意事项进行探讨。
Analysis of the Characteristics and Applicable Conditions of Horizontal Directional Drilling Construction Technology. The key technical problems of horizontal directional drilling (such as the calculation of back drag force of directional drilling rig, the action and amount of drilling fluid, the treatment of drilling fluid waste slurry) and the precautions in the horizontal directional drilling of thermal pipeline are discussed.