水平定向钻在南水北调配套工程输水管线穿越中的应用研究:以沙颍河穿越工程为例

发布时间：2018-03-12 07:33

本文选题：水平定向钻　切入点：大口径　出处：《地质科技情报》2016年04期 　论文类型：期刊论文

【摘要】：以沙颍河水平定向钻2号管穿越工程为例,应用理论分析及数据分析的方法对施工过程中导向孔钻进6次、扩孔扭矩大且耗时长、回拖管道时发生扩孔器断裂事故等问题进行了研究,总结了大直径水平定向钻穿越施工的经验与教训,为今后水平定向钻进技术在南水北调等资源和能源管道项目中的应用提供重要借鉴。研究结果显示:地磁有线控向系统+无线控向系统的双控向系统可有效降低导向孔失败风险;泥浆配制及净化设备不完善是引起沙颍河穿越工程施工不顺利的重要原因;根据地质条件选择合适的钻具可有效提高施工效率;回拖扩孔器断裂的原因是疲劳断裂,采用人工顶管法处理事故有借鉴意义;松散地层中连续施工可降低孔壁失稳风险。
[Abstract]:Taking Shaying River horizontal directional drill No. 2 pipe crossing project as an example, this paper applies the method of theoretical analysis and data analysis to drill the guide hole six times in the construction process, and the torque of reaming hole is large and the time consuming is long. In this paper, some problems, such as the fault of reaming tube, are studied, and the experiences and lessons of horizontal directional drill crossing construction with large diameter are summarized. This paper provides an important reference for the application of horizontal directional drilling technology in the project of South-to-North Water transfer and other resources and energy pipeline. The research results show that the dual-direction control system of the geomagnetic wireline directional control system can be effectively reduced. Failure risk of guide hole; The imperfection of mud preparation and purification equipment is an important reason for the unsmooth construction of Shaying River crossing project, the selection of appropriate drilling tools according to geological conditions can effectively improve the construction efficiency, and the fracture of the retractive reaming device is caused by fatigue fracture. It is significant to use artificial pipe jacking method to deal with accidents, and continuous construction in loose strata can reduce the risk of hole wall instability.
【作者单位】：周口市南水北调办公室;河南省水利勘测设计研究有限公司;北京市勘察设计研究院有限公司;中国地质大学(武汉)工程学院;
【分类号】：TV68;TV672.2

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