小直径钢管灌注排桩在边坡抢险工程中的应用探讨
投稿时间:2021-12-13  修订日期:2022-05-06  点此下载全文
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作者单位邮编
王延宁 山东省第三地质矿产勘查院 264004
王丰 四川省公路规划勘察设计研究院有限公司 610041
张祥恒 山东省第三地质矿产勘查院 264004
中文摘要:我国是一个多山的国家,地形复杂多样,地质条件多样,每年汛期间地质灾害发生频繁,易诱发滑坡、崩塌、泥石流等,对国民经济建设、人员安全构成了巨大威胁。由于灾害发生正值主汛期,该类边坡的处治均为抢险工程,工期要求紧。小直径钢管灌注排桩具有施工速度快,开挖量小,对边坡扰动小的优点,特别适合对工期要求紧的抢险工程。本文以具体工程为例,分析了边坡挡墙变形机制,通过采用小直径钢管灌注排桩的处治方案,提高了挡墙的抗倾覆能力,有效解决了挡墙基础承载力不足及大规模开挖基坑引发边坡二次滑塌等次生灾害问题,可为类似工程提供参考和借鉴。
中文关键词:边坡工程  抢险  小直径钢管灌注排桩  变形机制  挡墙基础
 
DISCUSSION ON APPLICATION OF SMALL-DIAMETER STEEL TUBULAR ROW PILES IN SLOPE EMERGENCY WORKS
Abstract:China is a mountainous country with complex and diverse terrain and diverse geological conditions. Geological disasters occur frequently during the flood season each year, which can easily induce landslides、collapses and mudslides, etc., posing a great threat to national economic construction and personnel safety. Since the disaster occurs during the main flood season, the treatment of this type of slope are emergency engineerings, and the construction period is tight. The small-diameter steel tubular row piles, due to its characteristics of fast construction speed, small excavation amount and small disturbance to slope, was applicable to emergency works with tight deadlines. Taking certain specific projects as the examples, it analyzed the deformation mechanism of retaining wall in slope, by using the treatment scheme of small-diameter steel tubular row piles, it increased anti-overturning ability of retaining wall, the problem of insufficient bearing capacity of retaining wall foundation and the secondary disasters such as slope collapse caused by large-scale excavation of foundation were also effectively solved, which can provide reference for similar projects.
keywords:Slope Engineering  Emergency Works  Small-diameter Steel Tubular Row Piles  Deformation Mechanism  Retaining Wall Foundation
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