巴基斯坦某燃煤电站岩土工程勘察实录  

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

作　　者：门青波 乔建伟 夏玉云 袁甲 MEN Qingbo;QIAO Jianwei;XIA Yuyun;YUAN Jia(China JIKAN Research Institute of Engineering Investigations and Design,Xi'an 710043;Shanxi Laboratory for the Property and Treatment of Special Soil and Rock,Xi'an 710043)

机构地区：[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

出　　处：《土工基础》2023年第6期897-901,932,共6页Soil Engineering and Foundation

基　　金：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)。

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。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 coefficientβof 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.

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 

分 类 号：P642[天文地球—工程地质学]