天然气管道曲线式顶管穿越富春江

发布时间：2018-03-07 20:07

本文选题：天然气管道　切入点：顶管　出处：《石油工程建设》2016年06期 　论文类型：期刊论文

【摘要】：杭州天然气利用工程S16富阳支线4标段高压管道由北往南穿越富春江。由于富春江穿越工程地质条件复杂,两次定向钻穿越均未成功。经专家论证改用顶管穿越方案,顶管内径2.4 m,顶管全长653.32 m。为降低竖井深度,缩短工期,降低工程投资,该穿越设计超常规采用了大坡度的U型顶管曲线设计。在介绍了场地环境和水文地质条件的基础上,较详细地论述了顶管纵断面设计、顶管竖井设计、顶进管节形式等内容;而后概括性地阐述了顶管穿越地层的特点、顶管施工难点分析、顶管施工的主要机具配置与技术措施等关键技术内容。施工实践证明,工程采用的竖向曲线顶管方案与目前普遍采用的竖向水平顶管方案相比,始发井深度减小约30 m,接收井深度减小约20 m,直接降低两侧竖井的工程费用近千万元,缩短施工周期至少60 d。该工程采用超常规设计与施工方案,开创了国内岩石段大坡度竖向曲线顶管的先河,对今后类似的工程具有一定的借鉴意义。
[Abstract]:The S16 project of Fuyang branch of Hangzhou natural gas utilization 4 section high pressure pipeline from north to south across the Fuchun River. Due to the Fuchun River through the complicated engineering geological conditions, two directional drilling were not successful. By experts to pipe jacking schemes, pipe diameter 2.4 m, length of 653.32 M. in order to reduce the pipe shaft depth, shorten the construction period, reduce the project investment. The ultra conventional crossing design using U type pipe jacking curve design of large slope. Based on the introduction of the site environment and hydrogeological conditions, are discussed in detail. The longitudinal section design of pipe jacking, pipe jacking shaft design, jacking pipe etc; and then briefly described the characteristics of pipe jacking through strata, analysis of pipe jacking the difficulty of construction, pipe jacking construction main equipment configuration and technical measures and other key technologies. The construction practice shows that the vertical curve pipe jacking project with widely used Compared to the vertical horizontal pipe jacking scheme, starting well depth is reduced about 30 m, receiving well depth decreases about 20 m, reduce the cost of the project directly on both sides of the shaft of nearly 10 million yuan, the construction period is shortened by at least 60 D. the engineering design and construction scheme of the ultra conventional, creating a domestic rock section of large slope vertical curve pipe jacking has precedent. Some reference for the future similar projects.

【作者单位】：中国石油天然气管道工程有限公司;中国石油天然气管道局第四工程分公司;
【分类号】：TE973.4

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