| 南水北调中线干渠复合土工膜防渗施工接缝问题 |
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| 引用本文： | 蒋学行,李翠玲,李晓红,吕军. 南水北调中线干渠复合土工膜防渗施工接缝问题[J]. 南水北调与水利科技（中英文）, 2011, 9(6): 16-18 |
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| 作者姓名： | 蒋学行 李翠玲 李晓红 吕军 |
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| 作者单位： | 河南省水利科学研究院,郑州450003;河南省水利工程安全技术重点试验室,郑州450003 |
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| 摘 要： | 南水北调中线干渠设计选用两布一膜型PE复合土工膜(PE膜厚0.30 mm,上下层长丝非织造土工布各重150 g/m2)整体防渗.施工中采用膜焊接、非织造土工布缝合的接缝方法,测得接缝拉伸断裂强度仅为母材强度的27％.在试验研究基础上提出了膜焊接后,膜与非织造土工布、非织造土工布与非织造土工布之间采用KS热熔胶黏剂黏合的接缝加固方法.加固后的接缝强度达到母材强度的97％,满足《水利水电工程土工合成材料应用技术规范》SL/T 225-98中接缝强度不低于母材强度80％的技术要求.
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| 关 键 词： | 渠道防渗 土工膜防渗 复合土工膜 土工膜铺设 接缝 KS热熔胶黏剂 土工膜黏接 PE土工膜 |
Study on Seaming of Compound Geomembrane in Seepage Control Construction of Trunk Canal of SNWDP Mid-Route Scheme |
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| JIANG Xue-xing , LI Cui-ling , LI Xiao-hong , LV Jun. Study on Seaming of Compound Geomembrane in Seepage Control Construction of Trunk Canal of SNWDP Mid-Route Scheme[J]. South-to-North Water Transfers and Water Science & Technology, 2011, 9(6): 16-18 |
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| Authors: | JIANG Xue-xing LI Cui-ling LI Xiao-hong LV Jun |
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| Affiliation: | JIANG Xue-xing1,2,LI Cui-ling1,LI Xiao-hong1,LV Jun1,2(1.Henan Provincial Water Conservancy Research Institute,Zhengzhou 450003,China,2.Key Laboratory of Hydraulic Engineering Safety Technique of Henan Province,China) |
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| Abstract: | According to the design of South-to-North Water Diversion Project(SNWDP) Mid-Route Scheme,one layer of PE membrane and two layers of PE composite geomembrane formed of filament non-woven fabric(The thickness of PE membrane is 0.3 mm,and the weight of the upper and lower layers of the filament non-woven geofabric is 150 g/m2,respectively) are selected for the overall seepage control of the trunk canal.In the current constructions,seams of PE membrane are welded and seams of non-woven geofabric are sewed up.T... |
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| Keywords: | Canal seepage control Seepage control with geomembrane Composite geomembrane Geomembrane laying Seams KS hot melt adhesive Binding of geomembrane PE geomembrane |
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