DL/T 5199－2004 水電水利混凝土防滲墻施工規(guī)范

內(nèi)容概要

　　This Standard is compiled according to the document issued byformer Ministry of Electricity Industry， referred to as ZKJ[1998] 28，named as "Notice on the Plan of Stipulating and Revising Standardsand Specifications of Electricity Industry in 1997 ".　　The application of concrete cut-off wall in hydropower andwater resources industry has been started since the end of 1950s inChina， which has a history of more than 40 years. During itsapplication， three industrial specifications has been stipulated byhydropower and water conservancy industry and issued respectivelyin 1963， 1979 and 1996. These three specifications immediatelyconcluded the achievements made during the development ofconcrete cut-off wall technique， and had played an important role inguiding the construction of concrete cut-off wall in our nationshydropower development， promoting the application of newtechnique， new material and new technologies， and guaranteeing thequality of project.　　A tremendous progress has been made in recent years in ournations cut-off wall technique. Many new experiences had beenaccumulated， especially in our nations key project such as ThreeGorges Project， Xiaolangdi Project， etc.. This Standard is compliedby summarizing the new technique in our nations cut-off wallconstruction practice and also combining the experiences fromoverseas projects.

書籍目錄

Foreword1  Scope2  Normative References3  Terms and Definitions4  General5  Working Platform and Guide-walls  6 Slurry  7  Trench Excavation8  Materials and Construction of Cut-off Wall9  Connection between Panels10  Reinforcement Cage and Embedded Part11  Treatment for Special Circumstances12  Quality Inspection and Construction RecordsAppendix A （Normative Appendix）  Criteria for Evaluating the　Prol. rtional Compressive Strength and Homogeneity　Of ClaY Concrete and　Plttstic ConcreteAppendix B （Informative Appendix）  Forms of Figure and Table for　 Construction Record

章節(jié)摘錄

插圖：7.0.1The axis and top elevation of the cut-off wall shall becontrolled by survey benchmarks according to design requirements.7.0.9Determination of the trench length shall consider the factors,such as the engineering geological and hydrogeological conditions,construction location, trenching method, capability of equipment,duration of trenching, the supply of wall material, preformed holes inthe wall, the layout of tremie pipes and the plan shape of the wall. The short trench may be adopted for closure trench, andarranged at location where the depth is relatively shallow and theconditions are relatively good.7.0.3Trenches may be constructed by stages and enough safetyspacing shall be maintained between contiguous trenches that areconstructed simultaneously.7.0.4Trenching equipment and method can be selected accordingto the strata, the structural type of wall and the capability ofequipment, a combination of different equipment can be adoptedwhen necessary. The trenching methods are as follows: trenching byconcussion and split, trenching by drilling and grabbing, trenching bygrabbing, trenching by cutting, etc.

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《DL/T 5199－2004水電水利混凝土防滲墻施工規(guī)范(英文版)》由中國電力出版社出版。

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