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National Standard of the People's Republic of China
GB50288—99
Code for design of irrigation and drainage engineering
1999-03—02
1999—08—01
State Administration of Quality and Technical Supervision
Ministry of Construction of the People's Republic of China
Engineering Construction Standard Full-text Information System
Jointly Issued
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Code for design of irrigation and drainage engineering
Code for design of irrigation and drainage engineering engineeringGB50288—99
Editing department: Ministry of Water Resources of the People's Republic of ChinaApproving department: Ministry of Construction of the People's Republic of ChinaEffective date: August 1, 1999
1999 Beijing
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Notice on the Release of National Standard
"Design Code for Irrigation and Drainage Engineering"Construction Standard [1999] No. 70
According to the requirements of Appendix 2 of the State Planning Commission's "Notice on Issuing Part of the 1999 Plan (Draft)" (Ji Zonghe [1990] No. 160), the "Design Code for Irrigation and Drainage Engineering" jointly formulated by the Ministry of Water Resources and relevant departments has been reviewed and approved as a mandatory national standard by relevant departments, with the number GB50288—99, and will be implemented on August 1, 1999.
This specification is managed by the Ministry of Water Resources, interpreted by the Ministry of Water Resources Water Resources and Hydropower Planning and Design Institute, and published and distributed by the China Planning Press under the organization of the Standard and Norm Research Institute of the Ministry of Construction. Ministry of Construction of the People's Republic of China
March 2, 1999
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
According to the compilation task of the "Design Specifications for Farmland Water Conservancy Projects" (later renamed "Design Specifications for Irrigation and Drainage Projects") issued by the State Planning Commission's Document No. 1990160, under the leadership of the Ministry of Water Resources, and hosted by the Ministry of Water Resources' Science and Technology Department, Rural Water Conservancy Department and the Ministry of Water Resources and Hydropower Planning and Design Institute, the compilation team began work in April 1991, completed the draft for comments in March 1994, completed the draft for review in April 1996, and held a review meeting in January 1997, which passed the review.
The "Design Code for Irrigation and Drainage Projects" is divided into general provisions, project classification, design standards, overall design, water storage, water diversion and water lifting projects, irrigation water supply and distribution systems, drainage systems, field projects, irrigation and drainage buildings, sprinkler and micro-irrigation systems, environmental monitoring and protection, and ancillary engineering facilities. It has 12 chapters, 36 sections, 356 articles and 15 appendices, and its content comprehensively covers all aspects of irrigation and drainage project design except structural calculation. It includes both the overall design of the irrigation and drainage system as a whole, and the design of irrigation project hubs and single irrigation and drainage buildings. It includes conventional design contents such as water source projects, water supply and distribution channels, drainage ditches, silicon irrigation, ditch irrigation, etc., as well as new technologies such as channel anti-seepage, pipeline water supply, sprinkler irrigation, and micro-irrigation water saving. It not only puts forward requirements for the environmental protection design of irrigation areas, but also stipulates the ancillary engineering facilities that must be set up to gradually realize the modernization of irrigation area management. This code is managed by the Ministry of Water Resources, and the specific interpretation work is the responsibility of the Ministry of Water Resources Water Resources and Hydropower Planning and Design Institute. During use, all units should actively summarize their experience and send their opinions to the National Standard "Irrigation and Drainage Engineering Design Specification" Management Group of the Ministry of Water Resources' Water Resources and Hydropower Planning and Design Institute (Address: Liupukang, Ande Road, Beijing, Postal Code: 100011). The editorial unit, participating units and main drafters of this specification are: Editor-in-chief: Farmland Irrigation Research Institute of the Ministry of Water Resources North China Institute of Water Resources and Hydropower Beijing Graduate School Ministry of Water Resources' Water Resources and Hydropower Planning and Design Institute
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Participating units: Jiangsu Water Resources Survey and Design Institute Shaanxi Water Resources and Hydropower Survey and Design Institute Shandong Water Resources Survey and Design Institute
China Institute of Water Resources and Hydropower Research
Wuhan University of Hydraulic and Electric Power
Northwest Agricultural University
Shaanxi Provincial Water Resources Department
Main drafters: Yu Kaide
Wei Yongyao
Lin Shigao
Engineering Construction Standard Full-text Information System
Dou Yisong
Qu Xingye
Huang Linquan
Li Zhanzhu
Si Zhiming
Yuan Kefa
Dong Guanqun
Liao Yongcheng
Chen Dengyi
Ding Fuqing
Zhu Shuren
Wang Langgui
Gao Qiren
Zhu Feng Book
Liu Qingkui
Zhong Bojun
Engineering Construction Standard Full Text Information System
Engineering Grade Classification
Design Standard
3.1 Irrigation Standard
3.2 Drainage Standard
3.3 Flood Control Standard
Irrigation and Drainage Quality Standard·
Overall Design
General Provisions
4.2 Soil and Water Resources Balance Analysis
4.3 Overall Layout
4.4 Environmental Impact Assessment and Economic Assessment
5 Water storage, water diversion and water lifting projects
Water storage projects
Water diversion projects
5.3 Sedimentation tanks
6 Irrigation water supply and distribution systems
6.1 Irrigation channel systems
6.2 Channel anti-seepage lining·
6.3 Irrigation pipeline systems
Drainage systems
7.1 Open ditch drainage systems·
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Engineering construction Standard full text information system
7.2 Concealed pipe drainage system...
8 Field engineering
Typical design
8.2 Irrigation ditches and grid fields
8.3 Field channels and drainage ditches
8.4 Field roads and forest belts
9 Irrigation and drainage buildings
General provisions
9.7 Waterfalls and steep slopes
9.8 Water measuring facilities
10 Sprinkler and micro-irrigation systems
General provisions
10.2 Sprinkler irrigation systems
10.3 Micro-irrigation systems
11 Environmental monitoring and protection
11.1 Environmental monitoring
11.2 Irrigation water source protection
Engineering environmental protection
12 Ancillary projects Facilities
Appendix A
Appendix B
Calculation of crop water requirements using the Penman method
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Calculation of irrigation system during crop growth period by water balance method (84) Appendix C Calculation of drainage modulus
Appendix D
Appendix E
Sediment settling velocity
Channel bed roughness
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Engineering Construction Standard Full Text Information System
Appendix F Allowable non-flushing flow rate of the channel
Appendix G Calculation of sediment exchange capacity of muddy channels in the Yellow River Basin (93)
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Appendix H
Calculation method of practical economic section of trapezoidal channels (98)
Appendix J Applicable conditions for channel anti-seepage lining structure........
Appendix K Calculation of spacing between final fixed drainage ditches and suction pipesAppendix L Calculation of groundwater drainage strength
Appendix M
Hydraulic calculation of aqueduct.
Hydraulic calculation of inverted siphon
Appendix N
Hydraulic calculation of culvert (or tunnel)
Appendix P
Appendix Q
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Hydraulic calculation of single-stage waterfall and single-stage steep slope with equal bottom width Explanation of terms used in this specification
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
1 General
1.0.1 This specification is formulated to unify the design requirements of irrigation and drainage projects, improve the quality of engineering design, ensure engineering safety, save water and land, reduce energy consumption, protect the water environment, rationally utilize water and soil resources, and give full play to the comprehensive benefits of the project. 1.0.2 This specification applies to the design of new, expanded and rebuilt irrigation and drainage projects. 1.0.3 The design of irrigation and drainage projects must conscientiously implement the relevant technical and economic policies of the state, comprehensively collect and analyze the required data, conduct necessary surveys, observations and experiments, and actively adopt new technologies, new processes and new materials according to the requirements of watershed water conservancy planning and regional water and soil resource balance, so as to adapt to local conditions, comprehensively manage, be economical and practical, and facilitate management. 1.0.4 In addition to complying with this specification, the design of irrigation and drainage projects shall also comply with the provisions of the relevant current national standards.
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
2 Engineering Grade Classification
The grade of the water storage slab project shall be determined according to the total water storage capacity in accordance with Table 2.0.1.
Project grade
Total water storage capacity (10°m)
Grading index of water storage hub project
Large (1) type
Large (2) type
Small (1) type
Small (2) type
The grade of water diversion hub project should be determined according to the size of water diversion flow and Table 2.0.2. Table 2.0.2
Project grade||t t||Water diversion flow (mr/s)
Water diversion hub project classification index
Large (1) type
Large (2) type
200~50
Small (1) type
Small (2) type
The water diversion hub project classification shall be determined according to the size of the single station installed flow or single station installed power 2.0.3
and in accordance with Table 2.0.3. When the water diversion hub project belongs to two different engineering classifications according to the single station installed flow and single unit installed power, the higher classification shall be used. Water lifting hub project classification index
Project grade
Single station installed flow (m/s)
Single station installed power, (MW)
Large (1) type
Large (2) type
200~50
Note: "Installed capacity" refers to all units including standby units. N
Small (1) type
Small (2) type
: The level of hydraulic structures in water storage, water diversion and water lifting hub projects shall be determined according to the grade of the hub project and the importance of the building in accordance with Table 2.0.4. Table 2.0.4 Classification of hydraulic structures
Classification of permanent structures
Main structuresWww.bzxZ.net
Secondary structures
Temporary structures
2.0.5 The class of irrigation channels or drainage ditches shall be determined according to the irrigation or drainage flow rate and in accordance with Table 2.0.5. For irrigation and drainage combined channel projects, when the irrigation and drainage flows are classified into two different engineering classes, the higher class shall be used. Table 2.0.5
Project level
Irrigation flow (ml/s)
Water diversion flow (m/s)
Irrigation and drainage canal project classification indicators
300~100
500~200
100~20
200~50
The level of irrigation and drainage structures such as sluices, aqueducts, inverted siphons, culverts, tunnels, waterfalls and steep slopes should be determined according to the size of the water flow and in accordance with Table 2.0.6. Table 2.0.6 Irrigation and drainage building classification index
Project level
Water flow rate m/s)
300~100
100~20
Water diversion, water lifting projects and other irrigation and drainage buildings built on flood control dikes, or 2.0.7
Drainage projects built on tide dikes, their level shall not be lower than the level of flood control dikes or tide dikes.
When irrigation and drainage buildings such as inverted siphons and culverts are arranged crosswise with roads or railways, their 2.0.8
level shall not be lower than the level of roads or railways. The location of water storage, water diversion and water lifting hub projects is particularly important, and the accident will cause major disasters, or the use of new structures and less practical experience of 2-5 level main buildings; 2-5 level high fill irrigation and drainage ditches, large span or high-row aqueducts, high head or large drop sluices, inverted siphons, culverts and other irrigation and drainage buildings, their level can be upgraded by one level after demonstration.
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The size shall be determined according to Table 2.0.3. When the water lifting hub project is classified into two different engineering categories according to the installed flow of a single station and the installed power of a single unit, the higher category shall be used for determination. Water lifting hub project classification indicators
Project category
Installed flow of a single station (m/s)
Installed power of a single station, (MW)
Large (1) type
Large (2) type
200~50
Note: "Installed capacity" refers to all units including standby units. N
Small (1) type
Small (2) type
: The level of hydraulic structures in water storage, water diversion and water lifting hub projects shall be determined according to the level of the hub project and the importance of the building in accordance with Table 2.0.4. Table 2.0.4 Classification of hydraulic structures
Level of permanent structures
Main structures
Secondary structures
Temporary structures
2.0.5 The level of irrigation channels or drainage ditches shall be determined according to the size of irrigation or drainage flow in accordance with Table 2.0.5. For irrigation and drainage combined channel projects, when the irrigation and drainage flows are divided into two different project levels, the higher level shall be determined. Table 2.0.5
Project level
Irrigation flow (ml/s)
Water diversion flow (m/s)
Irrigation and drainage canal project classification indicators
300~100
500~200
100~20
200~50
The level of irrigation and drainage structures such as sluices, aqueducts, inverted siphons, culverts, tunnels, waterfalls and steep slopes should be determined according to the size of the water flow and in accordance with Table 2.0.6. Table 2.0.6 Irrigation and drainage building classification index
Project level
Water flow rate m/s)
300~100
100~20
Water diversion, water lifting projects and other irrigation and drainage buildings built on flood control dikes, or 2.0.7
Drainage projects built on tide dikes, their level shall not be lower than the level of flood control dikes or tide dikes.
When irrigation and drainage buildings such as inverted siphons and culverts are arranged crosswise with roads or railways, their 2.0.8
level shall not be lower than the level of roads or railways. The location of water storage, water diversion and water lifting hub projects is particularly important, and the accident will cause major disasters, or the use of new structures and less practical experience of 2-5 level main buildings; 2-5 level high fill irrigation and drainage ditches, large span or high-row aqueducts, high head or large drop sluices, inverted siphons, culverts and other irrigation and drainage buildings, their level can be upgraded by one level after demonstration.
Engineering Construction Standards Full Text Information System3
The size shall be determined according to Table 2.0.3. When the water lifting hub project is classified into two different engineering categories according to the installed flow of a single station and the installed power of a single unit, the higher category shall be used for determination. Water lifting hub project classification indicators
Project category
Installed flow of a single station (m/s)
Installed power of a single station, (MW)
Large (1) type
Large (2) type
200~50
Note: "Installed capacity" refers to all units including standby units. N
Small (1) type
Small (2) type
: The level of hydraulic structures in water storage, water diversion and water lifting hub projects shall be determined according to the level of the hub project and the importance of the building in accordance with Table 2.0.4. Table 2.0.4 Classification of hydraulic structures
Level of permanent structures
Main structures
Secondary structures
Temporary structures
2.0.5 The level of irrigation channels or drainage ditches shall be determined according to the size of irrigation or drainage flow in accordance with Table 2.0.5. For irrigation and drainage combined channel projects, when the irrigation and drainage flows are divided into two different project levels, the higher level shall be determined. Table 2.0.5
Project level
Irrigation flow (ml/s)
Water diversion flow (m/s)
Irrigation and drainage canal project classification indicators
300~100
500~200
100~20
200~50
The level of irrigation and drainage structures such as sluices, aqueducts, inverted siphons, culverts, tunnels, waterfalls and steep slopes should be determined according to the size of the water flow and in accordance with Table 2.0.6. Table 2.0.6 Irrigation and drainage building classification index
Project level
Water flow rate m/s)
300~100
100~20
Water diversion, water lifting projects and other irrigation and drainage buildings built on flood control dikes, or 2.0.7
Drainage projects built on tide dikes, their level shall not be lower than the level of flood control dikes or tide dikes.
When irrigation and drainage buildings such as inverted siphons and culverts are arranged crosswise with roads or railways, their 2.0.8
level shall not be lower than the level of roads or railways. The location of water storage, water diversion and water lifting hub projects is particularly important, and the accident will cause major disasters, or the use of new structures and less practical experience of 2-5 level main buildings; 2-5 level high fill irrigation and drainage ditches, large span or high-row aqueducts, high head or large drop sluices, inverted siphons, culverts and other irrigation and drainage buildings, their level can be upgraded by one level after demonstration.
Engineering Construction Standards Full Text Information System
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