南水北调中线膨胀土(岩)渠段问题及成因分析  

Analysis on the Physical Issues of Expanded Geotechnical Channels in the Middle Line of South-to-North Water Diversion

作　　者：马慧敏 何向东 张帅 刘吉永 MA Huimin;HE Xiangdong;ZHANG Shuai;LIU Jiyong(Henan Water&Power Engineering Consulting Co.,Ltd.,Zhengzhou 450016,China;Henan Provincial Water Conservancy Research Institute,Zhengzhou 450008,China)

机构地区：[1]河南省水利勘测设计研究有限公司,河南郑州450016 [2]河南省水利科学研究院,河南郑州450008

出　　处：《人民黄河》2020年第2期128-131,共4页Yellow River

摘　　要：对南水北调中线工程膨胀土(岩)渠段常见实体问题及成因进行了总结与分析,指出:膨胀土(岩)渠段实体问题一般可分为过水断面的原边坡、处理层、防护层实体问题以及非过水断面的原边坡、处理层、防护层实体问题。总干渠过水断面的原边坡或者处理层破坏会影响渠道正常运行,后果严重,应避免非自然原因引起的此类破坏。非过水断面的原边坡或者处理层破坏一般不会影响渠道正常运行,但应排除影响到过水断面的深层边坡滑动以及大方量滑坡破坏影响到渠道正常运行。对于防护层出现损坏的应综合分析是否与边坡深层破坏有关,并根据研究结果提出相应的研判标准。This paper summarized and analyzed the common physical issues and causes of the drainage section of expansive soil(rock) in the middle line of South-to-North Water Diversion Project. It is pointed out that the physical issues of expanded geotechnical channel can be generally divided into the original slope, treatment layer and physical issues of protection layer of flow section and original slope, treatment layer and physical issues of protection layer of non-flow section. The destruction of the original slope or the filling layer of the main canal cross section will affect the normal operation of the channel, and the consequences are serious. Such damage caused by unnatural causes should be avoided. The failure of the original slope or filling layer of the non-flow section generally does not affect the normal operation of the channel, but it should be ruled out that the deep slope sliding that affects the flow section and the extensive landslide damage affects the normal operation of the channel. According to the relevant monitoring data, it is necessary to comprehensively analyze whether the damage to the protective layer is related to the deep slope damage, such as whether the accumulated displacement of the slope exceeds the alert value, whether the monitoring data has mutated, etc., and according to the research results, the corresponding evaluation standards are put forward.

关 键 词：膨胀土(岩)边坡 实体问题 南水北调中线工程 

分 类 号：TV91[水利工程—水利水电工程]