新疆希尼尔水库极软岩坝基可灌性研究  

Test and analysis on groutability of extreme soft rock dam foundation of Xinier Reservoir in Xinjiang Uygur Autonomous Region

作　　者：李新广 韩伟 夏卫华 孙宏昌 LI Xinguang;HAN Wei;XIA Weihua;SUN Hongchang(Tarim River Basin Authority of Xinjiang Uygur Autonomous Region,Korla 841000,China;Xinjiang Changji Fanghui Hydro￣power Design Co.,Ltd.,Changji 831100,China;Xinjiang Bazhou Water Resources and Hydropower Survey and Design Institu￣te,Korla 841000,China)

机构地区：[1]新疆维吾尔自治区塔里木河流域管理局,新疆库尔勒841000 [2]新疆昌吉方汇水电设计有限公司,新疆昌吉831100 [3]新疆巴州水利水电勘测设计院,新疆库尔勒841000

出　　处：《水利水电快报》2022年第9期77-82,共6页Express Water Resources & Hydropower Information

摘　　要：新近系砂岩、砂砾岩及泥岩等极软岩互层状地质基础易产生渗流稳定、渗漏损失、不均匀沉陷和砂土液化等地质危害。以新疆希尼尔水库极软岩坝基除险加固帷幕灌浆试验段施工为例,发现该地层用普通水泥灌浆可灌性差,且灌后难以达到理想的防渗效果。鉴于此,研究了可灌比值、地基渗透系数(K)、地层中细颗粒含量及地层的颗粒级配指标,并判定其可灌性。结果表明,地层颗粒级配指标与可灌比值可初步判定地层可灌性。研究成果可为类似工程判断地基可灌性提供参考。The interbedded geological foundation of extreme soft rock such as Neogene sandstone, glutenite and mudstone is prone to geological hazards such as seepage stability, seepage loss, uneven settlement and sediment-earth liquefaction.In view of these problems, taking the construction of curtain grouting test section for danger removal and reinforcement of Xinier Reservoir as an example, the poor groutability of ordinary cement grouting in this stratum and the difficulties for achieving the ideal anti-seepage effect after grouting are introduced.The groutable ratio, foundation permeability coefficient(K),the content of fine particles in the formation and the particle grading index of the formation are analyzed and studied to determine the groutability.The results show that the groutability of formation can be preliminarily determined by the ratio of formation particle gradation index to groutability, which can provide a reference for similar projects to judge the groutability of foundation.

关 键 词：极软岩互层地质基础 帷幕灌浆 可灌性分析 希尼尔水库 新疆 

分 类 号：TV214[水利工程—水文学及水资源]