土工基础

土工基础 ›› 2023, Vol. 37 ›› Issue (6): 897-901.

• 工程实录 • 上一篇    下一篇

巴基斯坦某燃煤电站岩土工程勘察实录

门青波1,2，乔建伟1,2，夏玉云1,2，袁 甲1   

  1. （1.机械工业勘察设计研究院有限公司，西安 710043；2.陕西省特殊岩土性质与处理重点实验室，西安 710043）
  • 收稿日期:2023-04-30 修回日期:2023-05-08 出版日期:2023-12-31 发布日期:2024-02-08
  • 通讯作者: 乔建伟（1990-），男，高级工程师，博士，研究方向为特殊岩土工程性质与地基处理技术。
  • 作者简介:门青波（1982-），男，高级工程师，研究方向为海外岩土工程勘察和地基处理。
  • 基金资助:
    陕西省创新能力支撑计划项目（2023-CX-TD-34，2022-KJXX-05，2023-CX-PT-46）；国机集团青年科技基金项目（QNJJ-PY-2022-41，QNJJ-ZD-2022-17）；西安市英才计划青年项目（2022XAYC-03）

Geotechnical Investigation Case History of a TEL 1×330 MW Coal-Burning Power Station Project in Thar Pakistan

MEN Qingbo1,2, QIAO Jianwei1,2, XIA Yuyun1,2, YUAN Jia1   

  1. (1.China JIKAN Research Institute of Engineering Investigations and Design, Xi'an 710043；
    2.Shanxi Laboratory for the Property and Treatment of Special Soil and Rock, Xi'an 710043)
  • Received:2023-04-30 Revised:2023-05-08 Online:2023-12-31 Published:2024-02-08

摘要： 巴基斯坦塔尔煤田地区广泛发育的湿陷性砂土，是该区的典型特殊土。从岩土工程勘察实录的角度，通过大量的室内试验和现场实验对巴基斯坦塔尔煤田II区块TEL 1×330 MW 坑口燃煤电站项目的湿陷性砂土的成因、类型和岩土及电性层地球物理特征进行了分析，采用室内湿陷成果和现场浸水载荷试验对湿陷性砂土地基进行工程评价，提出了工程处治措施并预测其产生自重湿陷的可能性，提出了该地区砂土湿陷性修正系数β和地基处理的原则和措施，并针对场地特点提出了地基基础方案和岩土施工中应注意的问题，可供同类工程参考借鉴。


关键词: 湿陷性砂土, 自重湿陷系数, 浸水平板载荷试验, 湿陷等级, 钻孔灌注桩

Abstract: The Thar Coalfield area in Pakistan is a widely developed with collapsible sandy soil, which is a typical special soil for the engineering construction in this area. From the perspective of geotechnical engineering investigation case history, the causes and types of the collapsible sandy soil and the geophysical characteristics of geotechnical and electrical layers of TEL 1×330 MW Power Plant Project in Thar Coalfield Block II, Pakistan was analyzed, the engineering characteristic of the collapsed-sand foundation is evaluated by using the results of laboratory collapsed-sand and the in-situ immersion load tests. This paper proposes the engineering treatment measures and predicts the possibility of selfweight collapsibility, and the correction coefficient β of the sand collapsibility and the principles and measures of the foundation treatment in this area are proposed, the scheme of foundation and the problems in the geotechnical construction are also proposed according to the characteristics of the site.

Key words: Collapsible Sand, Self-Weight Collapsible Coefficient, Immersed Plate Load Test, Collapsible Grade, Cast-In-Place Bored Piles

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