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湿陷性黄土在我国北部、东北部地区广泛分布。随着大型工程二次施工以及穿越施工的普及定向钻技术在湿陷性黄土上被广泛应用。湿陷性黄土由于具有湿陷性、渗水性等特性在施工过程中需要区别于传统的定向钻技术。本文从湿陷性黄土的特性为视角,结合本人在实际施工过程中的经验以及存在的问题。分别从施工准备体系、多元协调的导向控制、优化泥浆配比方案、完善施工后期的成孔保护等四个角度去讨论其在湿陷性黄土地区的应用,希望为今后的科研与施工提供理论依据。
Collapsible loess is widely distributed in the north and northeast of China. With the large-scale construction of secondary construction and through the construction of universal directional drilling technology in collapsible loess is widely used. Collapsible loess needs to be distinguished from the traditional directional drilling technology in the construction process due to its characteristics of collapsibility and seepage. In this paper, from the perspective of the characteristics of collapsible loess, combined with my experience in the actual construction process and the existing problems. Discuss its application in collapsible loess area from four aspects of construction preparation system, coordinated control, optimization of slurry proportioning scheme and perfection of pore-forming protection in the late stage of construction so as to provide theory for future research and construction in accordance with.