黄河放淤固堤工程淤背的合理施工速率

›› 2006, Vol. 27 ›› Issue (S2): 525-530.

黄河放淤固堤工程淤背的合理施工速率

沈细中^{1, 2}，张惠³，赵寿刚¹

1. 黄河水利委员会黄河水利科学研究院，郑州 450003；2. 中国科学院武汉岩土力学研究所，武汉 430071； 3. 长江水利委员会长江科学院，武汉 430010

发布日期:2006-12-16
作者简介:沈细中, 男，1969年生，工程师，现为在站博士后，主要从事岩土数值分析方面的研究
基金资助:
科技部科研院所社会公益研究专项(2005DIB3J054)

Reasonable construction velocity of reinforced dike project with silt of Yellow River

SHEN Xi-zhong¹, ZHONG Hui ², ZHAO Shou-gang¹

1. Institute of Engineering Mechanics, Yellow River Institute of Hydraulic Research, Zhengzhou 450003,China; 2. Yangtze River Scientific Research Institute, Changjiang Water Resources Commission Wuhan 430010, China

Published:2006-12-16

摘要/Abstract

摘要： 采用淤背方式加固黄河大堤时，河南、山东一期工程堤身多处出现裂缝。目前尚无淤背对堤身影响的定量研究成果，因而放淤固堤的合理施工速率难以确定。淤背体及堤防土体的水分消散过程实际上是非饱和流固耦合问题；淤背分级施工的变水头边界问题，可等效成多级常水头边界问题。采用非饱和渗流分析方法，计算出每级施工后堤防及淤背体的浸润线；将其作为已知边界条件，考虑堤防土体力学特性、排水条件等影响，进行非饱和流固耦合分析，据此提出相应的淤背施工合理速率。研究表明，该模型计算结果与实际情况相符，因而可为黄河标准化堤防工程设计与施工提供理论依据，并可供其它河流治理时参考。

关键词: 黄河, 标准化堤防, 淤背, 施工速率, 非饱和流固耦合

Abstract: During the dike reinforcement of the Yellow River with silt, cracks appeared in the first project stage in Henan and Shandong Province. There were not quantitative results about impacts of reinforced dike with silt on dike body so it is very difficult to choose the reasonable construction velocity of reinforced dike with silt. In fact, the dissipation course of moisture in silt body and dike is an unsaturated liquid-solid coupling problem. Construction of reinforced dike with silt by steps is a problem of changing water level boundary; and it equivalent to a constant water level boundary with several steps. With unsaturated seepage analysis, saturared line of dike body and silt body can be calculated based on construction of reinforced dike with silt of each step, so the soakage line can be regarded as a known boundary condition. Considering the mechanical characteristics of dike soil and the drainage condition, analysis of unsaturated liquid-solid coupling is carried out; thus the corresponding reasonable construction velocity of reinforced dike with silt can be put forward. Study shows that the analysis results of the method is consistent with the fact; thus it will not only provide theory basis for project design and construction of reinforcing dike with silt in the Yellow River, but also offer references to other rivers’ harnessing.

Key words: Yellow River, standardization dike, reinforced dike with silt, construction velocity, unsaturated liquid-solid coupling

中图分类号:

TV 142

沈细中，张惠，赵寿刚,. 黄河放淤固堤工程淤背的合理施工速率[J]. , 2006, 27(S2): 525-530.

SHEN Xi-zhong , ZHONG Hui , ZHAO Shou-gang,. Reasonable construction velocity of reinforced dike project with silt of Yellow River [J]. , 2006, 27(S2): 525-530.

参考文献

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