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SL 282-2003 PDF in English

SL 282-2003 (SL282-2003) PDF English
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SL 282-2003: PDF in English

SL 282-2003 
Water Resources Industry Standard
of the People’s Republic of China
P SL 282-2003
Design specification for concrete arch dams
Issued by. Ministry of Water Resources of the People’s Republic of China
Water Resources Industry Standards
of the People’s Republic of China
Design specification for concrete arch dams
Chief editorial organizations. Shanghai Investigation, Design & Research Institute;
Changjiang Investigation, Planning, Design and Research
Institute of Changjiang Water resources Commission.
Approved by. Ministry of Water Resources of the People’s Republic of China
Ministry of Water Resources of the People’s Republic of China
Notice on Approval of Release of SL282-2003 Design
Specification for Concrete Arch Dams
SGK [2003] No. 94
TO. Organizations directly under the ministry of water resources (water affair);
departments (bureaus) of provinces, autonomous regions and municipalities; water
resources (water affair) bureaus of municipalities with independent planning; and water
resources bureau of Xinjiang Production and Construction Corps.
Through examination, Design Specification for Concrete Arch Dams is approved and
issued as water resources industry standard. The Standard Number is SL282-2003,
replacing the previous version SD145-85.
This Standard shall be implemented from June 1, 2003.
Text of this Standard shall be published by China Water Power Press.
March 9, 2003
SD145-85 Design Specification for Concrete Arch Dams is revised according to the
formulation and revision plan on technical standard issued in 1997 by Ministry of Water
Resources, document SGJ (1997) No. 7 Notice on Printing and Distributing Documents
Related to Water Resources and Hydroelectricity Survey Design Technical Standards
Working Conference of Water Resources and Hydroelectricity Design Administration, and
SL01-97 Specification on Compiling Technical Standard of Water Resources and
Hydroelectric Development.
The theoretical principle of the revision of the specification is that currently, the water
resources industry will make revisions in accordance with the safety factor method of
constant values, instead of the provisions in GB 50199-94 Unified Design Standard for
Reliability of Hydraulic Engineering Structures. In document SGJJ (1999) No. 10 Letter on
Printing and Distributing Minutes of Water Resources and Hydroelectric Project Design
Reliability Theory Application Seminar, Water Resources and Hydroelectricity Design
Administration of Ministry of Water Resources, it restates the above principle and puts up
the idea that conditional large-scale projects could be analyzed and studied in the design
with reliability theory. After accumulating experiences through project design and practices,
and after the conditions are matured, it may be studied when the specification is revised in
The contents of chapters in the revised SL282-2003 Design Specification for Concrete
Arch Dams are.
— The selection of arch dam shape, the method of flood discharge and the
arrangement of arch dam;
— Hydraulic design for flood discharge, energy dissipation and scour prevention;
— Load and load-combination upon arch dam;
— The contents, methods and control standards of the stress analysis on arch dam;
— The anti-skid stability, deformation stability and safety indexes of arch dam
— The excavation, grouting, seepage-proofing, drainage, and the treatment of fault
and rock mass with weak structure of the dam foundation;
— The design of dam crest’s arrangement, parting, corridors, water-stop, drainage and
other structures;
— The concrete materials, temperature control standards, and temperature control
measures of the dam body;
— Safety monitoring design principles, monitoring items and monitoring facility layout.
The major revised and supplementary contents for Specification SD145-85 are as follows.
— Add the Chapter terms and symbols, and delete Annex V of the previous
— Add the preferred flood discharge method of the dam body for the flood discharge
arrangement of the arch dam, and emphasize the influence of the project’s
geological factors on the arrangement of arch dam;
— Add use variable thickness, variable curvature and other arch shapes in the
selection of arch dam shape, add the description of the relations between
reasonable design of arch crown beam section and the arrangement of dam crest
surface holes;
— Delete the content of “Remark ⑤” in the body of the previous specification on the
arrangement of arch dam flood discharge, list other remarks in the explanation of
articles, and add adverse influence of the flood discharge atomization shall be paid
attention to;
— Separately list flood standards and discharge capacity in the hydraulic design, add
the arrangement with a combination of various drainage buildings in flood discharge,
and add the requirements on the combined energy dissipation methods adopted to
discharge holes of the dam body;
— Add the design requirements of the application of artificial cushion pool for the
energy dissipation and impingement prevention, and emphasize that the energy
dissipater is responsible for solving the revetment and impingement prevention
problems of the eroded phase of the river channel downstream;
— Add two basic load combinations and two special load combinations which include
the normal design temperature rise;
— Emphasize that the results calculated according to finite element method shall also
be regarded as the main standards of measuring the strength safety of the arch
dam, and add the control standards for stress calculated according to finite element
— Define that for the arch dam under normal working state, there is no risk of skidding
along the foundation surface, which will be lessened in the requirements on the
design of controlling working condition;
— Add principles of the dam foundation treatment in karst regions and the
requirements on impervious curtain. Relax the requirement of foundation surface
evacuation on weathered depth of bedrock. Add the content that in the treatment of
fault fracture zone and the weak interlayer. The dam body is better to be studied
together with the batholiths. Supplement high-pressure cement grouting,
high-pressure spraying and rinsing grouting and other treatment measures for the
fault fracture zone;
— Emphasize the requirements on the minimum elevation of dam crest; Relax the set
spacing of cross joints and longitudinal joints. Put up the construction methods of
arc cross joint keyway type and plastic tube drawing. Add the requirements on
fire-fighting. Have supplemented the requirements on dam body and basic
Table of Contents
1  General Provisions... 9 
2  Main Terms and Symbols ... 11 
2.1  Main Terms ... 11 
2.2  Basic Symbols ... 13 
3  Arch Dam Arrangement ... 16 
3.1  General Rules ... 16 
3.2  Arch Dam Shape Selection ... 17 
3.3  Dam Flood Discharge Arrangements ... 18 
3.4  Other Arrangement Requirements ... 19 
4  Hydraulic Design ... 21 
4.1  General Principles ... 21 
4.2  Hydraulic Design for Release Structures ... 21 
4.3  Hydraulic Calculation for Energy Dissipation and Erosion Control ... 24 
4.4  Other Relevant Hydraulic Designs ... 29 
5  Load and Load combination ... 32 
5.1  Load ... 32 
5.2  Load Combination ... 35 
6  Stress Analysis of Arch Dam ... 39 
6.1  Analysis Content ... 39 
6.2  Method of Analysis ... 40 
6.3  Control Indexes and Other Stipulations ... 40 
7  Stability Analysis of Arch Dam Abutment ... 43 
7.1  General Principles ...
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.