This standard applies to the planning, design, construction and operation management of protection objects such as cities, villages, factories, mines, enterprises, transportation, transport, facilities, water conservancy and hydropower projects, power facilities, communication facilities, cultural relics and tourist facilities, and defense against rainstorm floods, snowmelt floods, rain and snow mixed floods and coastal and estuary areas. GB 50201-1994 Flood Control Standard GB50201-1994 Standard Download Decompression Password: www.bzxz.net

Engineering construction standard full text information system
National Standard of the People's Republic of China
Standard for flood controlwwW.bzxz.Net
1994—06—02
50201—94
1995—01—01
State Bureau of 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
Standard for flood control control
GB50201—94
Editor department: Ministry of Water Resources of the People's Republic of ChinaApproval department: Ministry of Construction of the People's Republic of ChinaEffective date: January 1, 1995
Engineering construction standard full text information system
Engineering construction standard full text information system
Notice on the release of the national standard "Flood Control Standard" Jianbiao [1994] 369
According to the requirements of the State Planning Commission's document [1986] No. 2630, the "Flood Control Standard" jointly formulated by the Ministry of Water Resources and relevant departments has been reviewed by relevant departments. The "Flood Control Standard" GB50201-94 is now approved as a mandatory national standard and will be implemented from January 1, 1995.
This standard is managed by the Ministry of Water Resources, and its specific interpretation and other work are the responsibility of the General Institute of Water Resources and Hydropower Planning and Design. The publication and distribution is organized by the Standard and Quota Research Institute of the Ministry of Construction. Ministry of Construction of the People's Republic of China
June 2, 1994
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Transportation Facilities
Civil Airports
Pipeline Engineering
Timber Water Transport Engineering·
Hydraulic and Hydropower Engineering
9999(8)
.0.+..+...0+.+0..++++++++0..+..+.++.Classes and Grades of Hydropower and Hydropower Projects6.1
Reservoir and Hydropower Station Engineering
Irrigation and Waterlogging Control and water supply projects
6.4 Embankment projects:
Power facilities
Communication facilities
Cultural relics and tourist facilities
Terms used in this standard
Appendix A
Additional explanation
Engineering construction standard full text information system
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Engineering construction standard full text information system
1 General
1.0.1 In order to meet the flood control requirements and flood control construction needs of various sectors and regions of the national economy and safeguard the flood control safety of people's lives and property, this standard is formulated in accordance with my country's social and economic conditions.
1.0.2 This standard is applicable to the planning, design, construction and operation management of the protection objects such as cities, villages, industrial and mining enterprises, transportation facilities, water conservancy and hydropower projects, power facilities, communication facilities, cultural relics and tourist facilities, and the defense of rainstorm floods, snowmelt floods, rain and snow mixed floods and coastal and estuary areas against tides. 1.0.3 The flood control standard of the protected object shall be expressed in terms of the recurrence period of the flood or tide to be defended. For particularly important protected objects, the maximum possible flood may be used. According to the different needs of the protected objects, the flood control standard may be designed at the first level or designed and verified at the second level.
The flood control standard of various protected objects shall be determined by comprehensive demonstration based on the requirements of flood control safety and taking into account economic, political, social, environmental and other factors. When conditions permit, a comparative analysis of the economic losses that may be reduced or exempted by different flood control standards and the required flood control costs shall be conducted to reasonably determine the standards. 1.0.5 The flood control standards of the following protected objects shall be determined in accordance with the following provisions: 1.0.5.1 When there are more than two protected objects in the protection area and they cannot be protected separately, the flood control standard of the protection area shall be determined according to the higher flood control standard required by the protection area and the main protected object. 1.0.5.2 For protected objects that affect public flood control safety, the flood control standard shall be determined according to the higher flood control standard required by itself and the public flood control safety. 1.0.5.3 The flood control standards of buildings and structures such as roadbeds and walls that also have flood control functions shall be determined according to the higher flood control standards of the protection area and the buildings and structures.
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
The flood control standards of the following protection objects may be appropriately increased or decreased after demonstration:
1.0.6.1 For protection objects that suffer huge losses and are severely affected by floods or accidents, flood control standards higher than those specified in this standard may be adopted. 1.0.6.2 For protection objects that suffer small losses and impacts after floods or accidents, or have a short service life and are temporary, flood control standards lower than those specified in this standard may be adopted. When adopting flood control standards higher or lower than those specified in this standard, if it does not affect public flood control safety, it shall be reported to the competent industry department for approval. If it affects public flood control safety, it shall also be reported to the water administration department for approval.
1.0.7 If the existing flood control standards of various protection objects are lower than those specified in this standard, measures should be actively taken to achieve them as soon as possible. If there are indeed difficulties, they can be appropriately reduced or achieved in stages after demonstration and approval by the competent industry department.
1.0.8 If flood control construction is carried out according to the flood control standards specified in this standard, and the required engineering volume is large and the cost is high, and it is difficult to achieve at the moment, it can be implemented in stages and achieved gradually after approval by the competent industry department.
1.0.9 After the flood control standards of various protection objects are determined, the corresponding design flood or tide level, verification flood or tide level should be determined based on the analysis and research of the rainstorm, flood, tide and other data measured and investigated in the area where the protection object is located, and should meet the following requirements: 1.0.9.1 The measured hydrological data should be reviewed, and the consistency of the data and the representativeness of the analysis and calculation series should be checked. The survey data should be reviewed. 1.0.9.2 The design flood is calculated based on the rainstorm data, and the calculation methods and parameters of runoff and confluence should be verified using the measured rainstorm and flood data. 1.0.9.3 The statistical parameters and adopted results of rainstorms and floods shall be analyzed for rationality.
In addition to complying with this standard, the flood control standards of various protection objects shall also comply with the provisions of the relevant national standards and specifications. Engineering 2 Standards Full-text Information System
Engineering Construction Standards Full-text Information System
2 Cities
1 Cities shall be divided into four levels according to the importance of their socio-economic status or the number of non-agricultural population. The flood control standards of each level shall be determined according to the provisions of Table 2.0.1. Grades and flood control standards of cities
Importance
Particularly important cities
Important cities
Medium-sized cities
General towns
Non-agricultural population
(10,000 people)
150~50
Flood control standards
[Recurrence period (years)]
200~100
100~50
2 If a city can be divided into several parts for separate protection, the flood control standard of each protection area shall be determined according to its importance, degree of flood hazard and number of non-agricultural population in the protection area, in accordance with the provisions of Table 2.0.1. 2.0.3 For cities located in hilly areas, when the elevation of urban areas varies greatly, the possible inundation range of floods of different magnitudes should be analyzed, and the flood control standards should be determined according to the provisions of Table 2.0.1 based on the non-agricultural population and the size of the losses in the inundated areas. 2.0.4 For cities located in plains and lake depressions, when it is necessary to defend against river floods or high water levels of lakes that last for a long time, the flood control standards can be the higher of those specified in Table 2.0.1.
For medium and above cities located in coastal areas, when the design high tide level determined according to the flood control standards in Table 2.0.1 is lower than the local historical highest tide level, the local historical highest tide level should be used for verification.
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Protection areas mainly based on villages (referred to as rural protection areas) should be divided into four levels based on their population or cultivated land area, and the flood control standards of each level should be based on Table 3.0.1.
Grade and flood control standards of rural protection zones
Population of protection zones
(10,000 people)
150~50
Cultivated land in protection zones
Area (10,000 mu)
300~100
100~30
Flood control standards
[Recurrence period (years)]
100~50
For rural protection zones with dense population, relatively developed township enterprises or high crop yields, their flood control standards may be appropriately increased. For rural protection zones with sparse population or small flood losses, their flood control standards may be appropriately reduced. 3.0.3
Flood control standards for storage and detention areas shall be determined based on the requirements of the approved river basin planning.
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Engineering Construction Standards Full Text Information System
Industrial and Mining Enterprises
1. Metallurgy, coal, petroleum, chemical industry, forestry, building materials, machinery, light industry, textile, commerce and other industrial and mining enterprises shall be divided into four grades according to their scale, and the flood control standards of each grade shall be determined according to the provisions of Table 4.0.1.
Grades and flood control standards of industrial and mining enterprises
Scale of industrial and mining enterprises
Extra-large
Flood control standards [recurrence period (years)]
200~100
100~50
①The scale of various industrial and mining enterprises shall be divided according to the current national regulations. Note:
②If the auxiliary factory area (or workshop) and living area are protected separately, their flood control standards can be appropriately lowered.
2 For medium-sized and above industrial and mining enterprises on the coast, when the design high tide level determined according to flood control standard 4.0.2
in Table 4.0.1 is lower than the local historical highest tide level, the local historical highest tide level should be used for verification.
4.0.3 When industrial and mining enterprises are submerged by floods, the losses are huge, the impact is serious, and it takes a long time to resume production, the flood control standard can be taken as the upper limit specified in Table 4.0.1 or raised by one level.
After industrial and mining enterprises suffer from floods, their losses and impacts are small, and production can be resumed quickly, and their flood control standards can be determined according to the lower limit specified in Table 4.0.1. For important parts such as pitheads and wellheads in underground mining, the flood control standards specified in Table 4.0.1 should be raised by one level for verification, or special protective measures should be taken. 4.0.4 When industrial and mining enterprises are flooded, which may cause explosions or lead to the leakage and spread of poisonous substances such as toxic liquids, toxic gases, and radioactive substances, their flood control standards shall comply with the following provisions:
4.0.4.1 For medium and small industrial and mining enterprises, their scale shall be increased by two levels and their flood control standards shall be determined in accordance with the provisions of Table 4.0.1.
4.0.4.2 For extra-large and large industrial and mining enterprises, in addition to the highest flood control standard of level 1 in Table 4.0.1, special protective measures shall be taken. 4.0.4.3 For nuclear industry and nuclear safety-related plant areas, workshops and special facilities, flood control standards higher than the 200-year return period shall be adopted. For serious nuclear pollution hazards, the maximum possible flood shall be used for verification.
4.0.5 The tailings dams or tailings ponds of industrial and mining enterprises shall be divided into five levels according to the scale of storage capacity or dam height, and the flood control standards of each level shall be determined in accordance with the provisions of Table 4.0.5. Grade and flood control standard of tailings dam or tailings pond Project scale
(10°m2)
Qualified for upgrading the grade
I and sub-grade projects
0.10~0.01
100~60
Flood control standard [recurrence period (years)]]
200~100
100~50
20001000
1000~500|| tt||500~200
200100
100~50
4.0.6 When a tailings dam or tailings pond fails, it will cause serious harm to the downstream towns, industrial and mining enterprises, transportation and other facilities, or harmful substances will spread in large quantities. The flood control standard determined in accordance with the provisions of Table 4.0.5 should be increased by one or two levels. For particularly important tailings dams or tailings ponds, in addition to adopting the highest flood control standard of Class I in Table 4.0.5, special protective measures should be taken. Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Transportation Facilities
5.1 Railways
5.1.1 Various types of buildings and structures on national standard gauge railways should be divided into three grades according to their importance or transportation capacity. The flood control standards for each grade shall be determined in accordance with the provisions of Table 5.1.1 and in combination with the requirements for flood discharge, storage and detention of the river section and region. Table 5.1.1 Flood control standards for various types of buildings and structures on national standard gauge railways [Recurrence period (years)] Transport capacity Importance Backbone railways and quasi-high-speed railways Secondary backbone railways and connecting railways Regional (including local) railways (10+t/year) 1500~750 ≤750 Note: ① Transport capacity refers to the volume in the direction of heavy vehicles. ② Each pair of passenger trains is converted to 70×10t per year for both uplink and downlink. ③ Railways passing through flood storage and detention areas shall not affect the normal operation of flood storage and detention areas. 2 The flood control standards for standard gauge railways dedicated to industrial and mining enterprises shall be determined in accordance with the flood control requirements of industrial and mining enterprises in 5.1.2.
Engineering Construction Standard Full Text Information System5. Grade and flood control standard of tailings dam or tailings pond Project scale
(10°m2)
Qualified for upgrading the grade
I, sub-grade projects
0.10~0.01
100~60
Flood control standard [recurrence period (years)]]
200~100
100~50
20001000
1000~500|| tt||500~200
200100
100~50
4.0.6 When a tailings dam or tailings pond fails, it will cause serious harm to the downstream towns, industrial and mining enterprises, transportation and other facilities, or harmful substances will spread in large quantities. The flood control standard determined in accordance with the provisions of Table 4.0.5 should be increased by one or two levels. For particularly important tailings dams or tailings ponds, in addition to adopting the highest flood control standard of Class I in Table 4.0.5, special protective measures should be taken. Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Transportation Facilities
5.1 Railways
5.1.1 Various types of buildings and structures on national standard gauge railways should be divided into three grades according to their importance or transportation capacity. The flood control standards for each grade shall be determined in accordance with the provisions of Table 5.1.1 and in combination with the requirements for flood discharge, storage and detention of the river section and region. Table 5.1.1 Flood control standards for various types of buildings and structures on national standard gauge railways [Recurrence period (years)] Transport capacity Importance Backbone railways and quasi-high-speed railways Secondary backbone railways and connecting railways Regional (including local) railways (10+t/year) 1500~750 ≤750 Note: ① Transport capacity refers to the volume in the direction of heavy vehicles. ② Each pair of passenger trains is converted to 70×10t per year for both uplink and downlink. ③ Railways passing through flood storage and detention areas shall not affect the normal operation of flood storage and detention areas. 2 The flood control standards for standard gauge railways dedicated to industrial and mining enterprises shall be determined in accordance with the flood control requirements of industrial and mining enterprises in 5.1.2.
Engineering Construction Standard Full Text Information System5. Grade and flood control standard of tailings dam or tailings pond Project scale
(10°m2)
Qualified for upgrading the grade
I, sub-grade projects
0.10~0.01
100~60
Flood control standard [recurrence period (years)]]
200~100
100~50
20001000
1000~500|| tt||500~200
200100
100~50
4.0.6 When a tailings dam or tailings pond fails, it will cause serious harm to the downstream towns, industrial and mining enterprises, transportation and other facilities, or harmful substances will spread in large quantities. The flood control standard determined in accordance with the provisions of Table 4.0.5 should be increased by one or two levels. For particularly important tailings dams or tailings ponds, in addition to adopting the highest flood control standard of Class I in Table 4.0.5, special protective measures should be taken. Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Transportation Facilities
5.1 Railways
5.1.1 Various types of buildings and structures on national standard gauge railways should be divided into three grades according to their importance or transportation capacity. The flood control standards for each grade shall be determined in accordance with the provisions of Table 5.1.1 and in combination with the requirements for flood discharge, storage and detention of the river section and region. Table 5.1.1 Flood control standards for various types of buildings and structures on national standard gauge railways [Recurrence period (years)] Transport capacity Importance Backbone railways and quasi-high-speed railways Secondary backbone railways and connecting railways Regional (including local) railways (10+t/year) 1500~750 ≤750 Note: ① Transport capacity refers to the volume in the direction of heavy vehicles. ② Each pair of passenger trains is converted to 70×10t per year for both uplink and downlink. ③ Railways passing through flood storage and detention areas shall not affect the normal operation of flood storage and detention areas. 2 The flood control standards for standard gauge railways dedicated to industrial and mining enterprises shall be determined in accordance with the flood control requirements of industrial and mining enterprises in 5.1.2.
Engineering Construction Standard Full Text Information System
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