This standard applies to the design, construction, testing and management of channel anti-seepage projects for farmland irrigation, power generation water diversion, water supply, etc. SL 18-2004 Technical Specification for Channel Anti-seepage Project SL18-2004 Standard download decompression password: www.bzxz.net

Water conservancy industry standard of the People's Republic of China
SL 18—2004
Replaces SL 18—91
Technique specification for seepage preventionengineering on canal
2004-12-08 Issued
2005-02-01 Implementation
Ministry of Water Resources of the People's Republic of China
Ministry of Water Resources of the People's Republic of China
Notice on the approval and issuance of "Technical Specifications for Channel Anti-seepage Engineering" SL18-2004
Shui Guo Ke [2004] No. 590
All units directly under the Ministry, water resources (water affairs) departments (bureaus) of provinces, autonomous regions and municipalities directly under the Central Government, water resources (water affairs) bureaus of cities with independent planning status, and water resources bureau of Xinjiang Production and Construction Corps: After review, the "Technical Specifications for Channel Anti-seepage Engineering" is approved as a water conservancy industry standard and is hereby issued. The standard number is SL18·2004, replacing the "Technical Specifications for Channel Anti-seepage Engineering" SL18-91.
This standard shall be implemented on February 1, 2005. The standard text is published and distributed by China Water Resources and Hydropower Press. December 8, 2004
This standard is revised in accordance with the requirements of the Ministry of Water Resources' International Cooperation and Science and Technology Department for the formulation and revision of water conservancy industry standards and the "Regulations on the Preparation of Water Conservancy Technical Standards" (SL1-2002). The "Technical Specifications for Channel Anti-seepage Engineering" (SL18--91) has played a significant role in the construction of channel anti-seepage engineering in my country for 12 years since its promulgation. With the development of channel anti-seepage engineering construction and scientific and technological progress in my country, it is necessary to revise the original specifications. This standard consists of 13 chapters, 40 sections, 224 articles and 8 appendices. The main technical contents are: general principles, symbols and codes, basic information, anti-seepage materials and anti-seepage structures, anti-seepage channel design, channel foundation stability, anti-seepage structure design, channel foundation trench construction, anti-seepage structure construction, construction quality control and inspection, technical and economic comparison of channel anti-seepage schemes, testing, and management. The main contents of this revised standard are:
The original framework and structure of the standard have been adjusted; the general provisions have been adjusted and modified, and the provisions that special research should be conducted on extra-large channels have been supplemented:
- Added chapters such as standards, symbols and codes, basic information, channel foundation stability, control and inspection of construction quality, and technical and economic comparison of channel anti-seepage plans; - Coordinated and unified the original standard channel anti-seepage project scale (large, medium, small) and the "Irrigation and Drainage Engineering Design Code" (GB50288-99) channel project level classification standards;
- Added anti-seepage channel flow calculation, hydraulic calculation of arc slope foot trapezoidal section size, made partial modifications to the form, spacing and filling materials of expansion joints and masonry joint materials, and stipulated the top width of channel embankments; - Deleted the frost heave prevention and control of anti-seepage channels Chapter 1, added frost heave soil foundation in Chapter 6, stipulated the engineering environmental conditions and anti-frost heave measures for anti-frost heave design; added the appendix anti-seepage material performance test method, the forward recursive water balance method for calculating channel flow, the calculation method of practical economic section of arc-bottom trapezoidal channel, the method and quality inspection of membrane material joints, etc.;
The contents of Appendix 1 and Appendix 2 of the original specification were modified and supplemented, and incorporated into the chapter on anti-seepage materials and anti-seepage structures; the contents of the original Appendix 3 were modified and supplemented, and incorporated into the chapter on anti-seepage channel design; the provisions on the treatment of weak collapsible foundation by immersion pre-settling method and the newly built channel with ditch filling, as well as the contents of the original Appendix 4 and Appendix 8 were deleted: 1. Added the provisions on the insulation transportation of asphalt mixture, and appropriately improved the performance index of concrete and the thickness index of membrane material; 1. Corrected the errors in the formulas, charts and literature of the original specification. This standard is recommended in its entirety.
The previous versions of the specification replaced by this standard are: SL 18-91.
Approval department of this standard: Ministry of Water Resources of the People's Republic of China. Host organization of this standard: Rural Water Resources Department of Ministry of Water Resources. Interpretation unit of this standard: Rural Water Resources Department of Ministry of Water Resources. Editor of this standard: China Irrigation and Drainage Development Center. Participating units of this standard: Beijing Zhongqiang Lvyuan Temperature Drainage Engineering Consulting Co., Ltd. Northwest A&F University.
Liaoning Institute of Water Resources and Hydropower Science.
Shanxi Provincial Department of Water Resources.
Daqing River Management Office of Hebei Province.
Publisher and distributor of this standard: China Water Resources and Hydropower Press. Main drafters of this standard: Li Anguo, Qu Qiang, Zhang Haiyan, Yang Wanzhi, Rong Fengtao, Zhang Jinkai, Li Shumin.
Technical person in charge of the review meeting of this standard: Xu Qianqing, Xu Zhifang. Reviewer of the format of this standard: Mai Yisong2.
Symbols and codes.
Basic information.
3.1 Hydrometeorological, geological and topographic conditions 3.2 Building materials and construction conditions 3.3 Other information 4 Anti-seepage materials and anti-seepage structures Main raw materials for anti-seepage Technical requirements for anti-seepage structures Selection of anti-seepage structures Design of anti-seepage channels, General provisions Flow calculation Section form Section parameters |tt||Hydraulic calculation of cross-sectional dimensions
Expansion joints, masonry joints and embankment crests
Channel foundation stability
General provisions
Collapsible soil foundation·
Dispersed soil foundation
Expanding soil foundation
Salt-expanding soil foundation
Frost-heaving soil foundation·
Other situations
Design of anti-seepage structure
Anti-seepage of soil materials
Cement soil Anti-seepage
Stone masonry anti-seepage
Concrete anti-seepage
Membrane anti-seepage
Asphalt concrete anti-seepage
8Channel foundation trench construction
Filling and excavation·
Construction of foundation trench treatment and drainage facilities
9Anti-seepage structure construction
Soil material anti-seepage
Cement soil anti-seepage
Stone masonry anti-seepage
Concrete anti-seepage
Membrane material anti-seepage
Asphalt concrete anti-seepage
Filling expansion joints
Construction quality control and inspection
Technical and economic comparison of channel anti-seepage schemes
11.1 General provisions
Scheme comparison
Technical and economic indicators
Leakage test
Deformation test
Frost heave test
Performance of anti-seepage materials Test method
Appendix A
Appendix B Forward recursion water balance method for deriving channel flowAppendix C Calculation of slope stability of soil protection layer in membrane anti-seepage channel40
Appendix D
Calculation method of practical and economical section of arc-bottom trapezoidal channelAppendix E
Drainage facilities of channel foundation
Appendix F
Appendix G
Appendix H
Mix ratio, production and construction method of expansion joint filling and crack treatment materials
Method and quality inspection of membrane joints
Standard wording for static water method test section setting and results collation of channel leakage
Article explanation,
1 General
1.0.1 This standard is formulated to unify the technical standards of channel anti-seepage projects, improve construction quality, management level and water delivery efficiency, and give full play to the benefits of the project. 1.0.2 This standard applies to the design, construction, testing and management of channel anti-seepage projects such as farmland irrigation, power generation water diversion, and water supply.
1.0.3 The design and construction of channel anti-seepage projects should strictly follow the national basic construction procedures and be carried out simultaneously with other channel engineering projects. 1.0.4 Channel anti-seepage projects should implement the principle of adapting measures to local conditions and using local materials, and meet the following technical requirements:
1 The design of channel anti-seepage projects should be carried out through engineering geological surveys to find out the engineering geological and hydrogeological conditions of the channel bed, and master the basic conditions of the channel, collect relevant technical information, and achieve advanced technology, economic rationality, durability, safe use, and convenient management through demonstration.
2 The construction of channel anti-seepage projects should meet the anti-seepage design requirements and ensure the construction quality. 3 Channel anti-seepage projects should adopt advanced technologies to conduct tests such as leakage, deformation and frost heave to achieve engineering application results.
4 Channel anti-seepage projects should strengthen management to ensure the design service life and improve efficiency. 5 Special research should be conducted on super-large anti-seepage channels. 1.0.5 The clauses in the following standards become the clauses of this standard through reference in this standard:
"Portland Cement, Ordinary Portland Cement" (GB175-1999) "Chemical Analysis Methods for Cement" (GB/T176--1996) "Test Methods for Asphalt Waterproofing Membrane-Content of Dipping Material" (GB328.2-89)
"Test Methods for Asphalt Waterproofing Membrane-Impenetration" (GB328.3-89) "Test Methods for Asphalt Waterproofing Membrane-Water Absorption" (GB328.4-89) "Test method for asphalt waterproofing membrane - Heat resistance" (GB328.5-89) "Test method for asphalt waterproofing membrane - Tension" (GB328.6-89) "Test method for asphalt waterproofing membrane - Flexibility" (GB328.7-89) "Slag Portland Cement, Pozzolana Portland Cement and Fly Ash Portland Cement" (GB1344-1999)
"Test method for cement fineness (80um sieve analysis method)" (GB/T1345-1991 )
Test Method for Water Consumption, Setting Time and Stability of Cement Standard Consistency (GB/T1346-1989)
Extruded Polystyrene Foam (XPS) for Thermal Insulation (GB10801.2-2000)
Geosynthetics-Polyethylene Geomembrane (GB/T17643-1998)Test Method for Strength of Cement Mortar (ISO Method) (GB/T17671--1999) Polyvinyl chloride geomembrane" (GB/T17688-1999) "Polymer waterproof material" (GB18173.1-2000) "Irrigation and drainage engineering design code" (GB50288-99) "Rainfall observation code" (SL21-90) "Technical code for cement grouting construction of hydraulic structures" (SL62-94) "Economic evaluation code for water conservancy construction projects" (SL72-94) "Anti-freezing design code for hydraulic structures" (SL211-98) "Soil "Testing Regulations for Synthetic Materials" (SL/T235-1999) "Technical Management Regulations for Irrigation and Drainage Engineering" (SL/T246-1999) "Design Guidelines for Asphalt Concrete Facade and Core Wall of Shishi Dam" (Trial) (SLJ01-88)
"Technical Specifications for Grouting of Earth-rock Dam" (SD266-88) "Construction Specifications for Roller Compacted Asphalt Concrete Anti-seepage Wall of Earth-rock Dam" (Trial) (SD220-87
"Water Surface Evaporation Observation Specification" (SD265一88）《Technical Specification for Fly Ash Used in Hydraulic Concrete》(DL/T5055-1996)《Technical Specification for Admixtures in Hydraulic Concrete》(DL/T5100-1999)《Technical Specification for Construction of Hydraulic Concrete》(DL/T5144-2001)2
《Technical Specification for Testing Hydraulic Concrete》(DL/T5150-2001)《Technical Specification for Sand and Gravel Aggregates in Hydraulic Concrete》(DL/T5151-2001)《Technical Specification for Asphalt and Asphalt Mixtures in Highway Engineering》 Test Procedure" (JTJ052-2000) 1.0.6 In addition to implementing this standard, the construction and management of channel anti-seepage projects shall also comply with the provisions of relevant national standards in force.
2.0.1 Geometric parameters
2 Symbols and codes
- Channel anti-seepage area;
α--Ratio of the water-passing cross-sectional area of ​​the practical economic section to the hydraulically optimal section;
The angle between the component force of the vertical slope of the soil strip and the plumb line; Channel embankment top width;
一一channel bottom width or the chord length of the curved bottom of the curved bottom trapezoidal channel;6
hil,hiz,hi3\
Li,L2-
the width of the soil strip;
the chord length of the curved bottom of the hydraulically optimal section of the curved bottom trapezoidal channel; the horizontal section width of the channel bottom of the curved slope foot trapezoidal channel; the width of the culvert;
the diameter of the sieve hole that passes 50% of the weight of gravel;
the clearance height above the water surface of the culvert;
the distance from the end of the water collecting pipe to the channel bottom pad Depth of the layer; Depth of the head end of the water collecting pipe from the bottom cushion layer of the channel; Total height of the culvert section;
Height of the vertical wall section of the culvert;
Arc sagittal height of the bottom of the culvert;
Height of the soil column corresponding to r, r, rm; bzxz.net
Length of the channel;
Total length of the anti-seepage channel;
Top and bottom oblique length of the soil strip;
Length of the water collecting pipe;
Radius of the arc at the bottom of the channel;
ro--Radius of the arc at the bottom of the channel at the hydraulically optimal section; 4
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.