浅议均质土坝湿陷性黄土地基处理措施-学兔兔 www.xuetutu.com.pdf

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水利水电技术第41卷2010年第7期
浅议均质北坝湿陥性黄北地基处理措施
陈广峰,马智俐2,王文旭,赵蓉,陈惠芳,宋宜容°
(1.清华大学土木水利学院,北京100084;2.水利部发展研究中心,北京100038;3.北京市昌平区
水务局,北京102200;4.北京建筑工程学院建筑系,北京100044;5.中国矿业大学建筑工程学院
江苏徐州22116:6.青海大学地质工程系,青海西宁810016)
摘要;结合黄河左岸均质土坝实例,对均质湿陷性黄土进行研究分析,比较现场取样后的室内实验
与理论计算,研究表明,两者数据基本一致,而且进行了后期检测,所得的检测结果与实验结果也同
样一致。为此,得出强夯较为合理的处理方法。
关键词:均质土坝;湿陷性黄土;夯点;夯沉量;参数;地基处理;尼那水电站
中图分类号:TV223.2(244
文献标识码:B
文章编号:1000-0860(2010)07-0020-04
Discussion on treatment measures for collapsible loess foundation of homogeneous earthfill dam
CHEN Guangfeng, MA Zhili, WANG Wenxu,ZHAO Rong, CHEN Huifang, SONG Yirong
( 1. chol of Civil En ng, Tn a si y iin 100084 hina; 2. Development Research Center, MWR, Beijing 100038
China 3. Beijing Changing Water Authority, Beijing 102200, China; 4. School of Architecture and Urban Planning, Beijing
University of Civil Engineering and Architecture, Beijing 100044, China; 5. School of Mechanics&Civil Engineering, China
University of Mining &Technology, Xuzhou 221116, Jiangsu, China; 6. Department of Geological Engineering
Qinghai Unversity, Xining 810016, Qinghai, China)
Abstract Based on the actual case of the construction of a homogeneous earthfill dam built on the left bank of the Yellow River
the homogeneous collapsible loess is analyzed and studied; in which the laboratory test on the field sampling is compared with the
theoretical calculation and the result shows that both the data are basically consistent Furthermore, the later detection is made
and the result is also consistent with that from the test concerned. Therefore, the tamper vibration is to be reasonable for the treat
ment on the loess
Key words: homogeneous earthfill dam; collapsible loess; tempering point; settlement under tampering; parameter; foundation
treatment; Nina Hydropower Station
1工程概述
陷性土层深度7m
接头段由于结构布置需要已将湿陷性黄土挖
黄河尼那水电站左岸均质土副坝(下称左岸副除,所以本次研究的范围主要针对副坝左0+
坝)右邻泄水闻,全长423.87m。左岸黄土副坝为0000(坝左0+112.07)~副坝左0+362.80
均质土坝。其中,坝左0+051.00~坝左0+段坝基。
112.07段为接头段,座落于左岸平缓的Ⅰ~Ⅱ级阶
地,地面高程2225~2260m,阶地上部为为粉质
收稿日期:2010-03-17
粘土,层厚2~15m;下部为厚度10~20m的黄河
作者简介:陈广峰(1971-),男,博士后研究员,所长;中国建设教
冲积砂卵砾石层,下伏粘土岩。粉质粘土层具有湿陷
育协会副秘书长、特聘教授;中国发展战略学研究会人才
性,坝基范围属非自重~自重Ⅱ~Ⅲ湿陷性场地,湿
战略专业委员会学术部主任。
Water Resources and Hydropower Engineering Vol 41 No. 7