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Sl274-2020 code for design of roller compacted earth rock dams pdf

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Brief introduction: SL 274-2020 replaces sl. 274-2001
Code for design of roller compacted earth rock dams
Design code for rolled earth-rock fill dams
Issued on November 30, 2020
Implemented on February 28, 2021
preface
According to the arrangement of water conservancy technical standard preparation and revision plan, SL 274-2001 "design code for roller compacted earth rock dam" is revised according to the requirements of sl.1-2014 "Regulations for compilation of hydraulic technical standards".
This standard consists of 10 chapters and 6 appendixes. The main technical contents are as follows:
——Hydro junction layout and dam type selection;
——Selection of dam construction materials and filling requirements;
——Dam structure;
——Dam foundation treatment;
——Connection between dam body and dam foundation and other buildings;
——Calculation and analysis of dams;
——Stage construction and expansion and heightening;
——Safety monitoring design. The main contents of this revision are as follows:
——The relevant contents of risk design concept are added in relevant chapters;
——The relevant contents of quarry planning and excavation material utilization are supplemented;
——According to the development of earth rock dam technology, the filling requirements are revised accordingly;
——The design of filter layer is improved;
——The sand gravel foundation treatment strengthened the excavation and the application of concrete cutoff wall;
——The treatment of unfavorable geological conditions of rock foundation is refined The relevant regulations of buried pipe under the dam are added;
——In the dam structure, dam foundation treatment and the connection between dam and foundation, the contents related to seepage prevention and drainage forming a complete system are added;
——The material model for stress and deformation calculation of earth rock dam is added.
The mandatory provisions in this standard are: 3.2 5, 4.1 6, 1, 2, 4.1 16, 4.2 Article 3, paragraph 1, 4.2 5, 1, 2, 5.3 1, 5.3 5, 5.3 7, 5.5 3 articles and 5 clauses, 5.6 2, 8.3 15.
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