SL 312-2005 Technical Management Regulations for Operation of Soil and Water Conservation Projects
Some standard content:
ICS93.160
Water Conservancy Industry Standard of the People's Republic of China
SL312—2005
Code on operation and maintenance of soil and water conservation works
Promulgated on 2005-05-30
Ministry of Water Resources of the People's Republic of China
Implementation on 2005-09-01
Ministry of Water Resources of the People's Republic of China
Notice on Approving and Issuing the "Technical Management Code for Operation of Soil and Water Conservation Projects" SL312-2005
Water Resources [2005] No. 208
All units directly under the Ministry, water conservancy (water affairs) departments (bureaus) of provinces, autonomous regions, and municipalities directly under the Central Government, water conservancy (water affairs) bureaus of all independently planned cities, and water conservancy bureau of the Xinjiang Production and Construction Corps: After review, the "Technical Management Code for Operation of Soil and Water Conservation Projects" is approved as a water conservancy industry standard and is hereby promulgated. The standard number is SL312-2005. This standard shall be implemented from September 1, 2005. The standard text is published and distributed by China Water Resources and Hydropower Press. May 30, 2005
This standard is based on the content and requirements of the "Contract for the Formulation and Revision of Water Resources and Hydropower Technical Standards" signed by the Soil and Water Conservation Department of the Ministry of Water Resources and the Soil and Water Conservation Bureau of the Yangtze River Commission in 1996.
This standard has 4 chapters including: General Principles, Technical Management of Soil and Water Conservation Engineering Measures, Technical Management of Soil and Water Conservation Plant Measures, and Technical Management of Soil and Water Conservation Cultivation Measures.
This standard is recommended in its entirety.
Approval department of this standard: Ministry of Water Resources of the People's Republic of China Host organization of this standard: Soil and Water Conservation Department of Ministry of Water Resources Interpretation unit of this standard: Soil and Water Conservation Department of Ministry of Water Resources Editor of this standard: Soil and Water Conservation Bureau of Yangtze River Water Resources Commission Publisher and issuer of this standard: China Water Resources and Hydropower Press Main drafters of this standard: Xiong Tie (editor-in-chief) Hu Yufa
Mo Chunyan
Qiao Dianxin Zhang Wencong
Pu Chaoyong
Feng Minghan|| tt||Wan Caibing
Li ShuangxiPu Yongping
Technical person in charge of the review meeting of this standard: Su ZhongrenReviewer of the format of this standard: Dou Yisong1
Technical management of soil and water conservation engineering measures
General provisions
Horizontal steps (reverse slope terraces)
Horizontal ditches (horizontal bamboo ditch)
Fish scale pits
Intercepting ditches
Drainage ditches
Reservoirs||tt| |Ponds and weirs (mountain ponds, waterlogging ponds)
Sedimentation ponds
Ditch head protection projects
Lingdi dams
Sediment-blocking dams
Flood diversion and flood-flooding projects
Landslide control projects
Technical management of soil and water conservation plant measures
General provisions
Soil and water conservation forests·
Soil and water conservation economic forests and fruit trees
Soil and water conservation grass planting
Closed-off control
4Technical management of soil and water conservation farming measures
Explanation of standard terms
Explanation of clauses
1 General provisions
1.0.1 This standard is formulated to implement the Soil and Water Conservation Law of the People's Republic of China and the Regulations for the Implementation of the Soil and Water Conservation Law of the People's Republic of China, standardize the technical management of soil and water conservation projects after completion and acceptance, improve the technical management level of project operation, consolidate and improve the comprehensive protection system, and give full play to the overall benefits of the project. 1.0.2 This standard applies to soil and water conservation projects approved and implemented by soil and water conservation authorities at all levels.
1.0.3 The operation and technical management of soil and water conservation projects includes: 1
Technical management of soil and water conservation project measures. Technical management of soil and water conservation plant measures. Technical management of soil and water conservation farming measures. The operation and technical management of soil and water conservation projects shall meet the following requirements: 1
Improve the operation and technical management system of soil and water conservation projects, strengthen the unified management of projects, and ensure the safe operation of various projects. 2 Adhere to the principle of "whoever benefits, whoever manages", and implement the responsible subject of project maintenance.
3 Adhere to the principle of combining daily maintenance management with key inspection and maintenance. For key projects such as silt dams, pond dams, and sand-trapping dams, in addition to daily management by the responsible subject of maintenance, the county-level soil and water conservation authorities should conduct key inspections and supervision every year. For other soil and water conservation projects, the responsible subject of project maintenance shall be the main body for daily management. 4 Pay attention to the rational development and utilization of soil and water conservation projects, and closely combine them with soil and water conservation project monitoring.
1.0.5 In addition to complying with this standard, the technical management of soil and water conservation project operation shall also comply with the provisions of the relevant national standards in force. 1
2 Technical management of soil and water conservation project measures
2.1- General provisions
2.1.1 Soil and water conservation engineering measures should include: terraces, horizontal steps (reverse slope terraces), horizontal ditches (horizontal bamboo grooves), fish scale pits, intercepting ditches, drainage ditches, reservoirs, water cellars, ponds (mountain ponds, waterlogging ponds), sedimentation ponds, ditch head protection projects, storage buildings, silt dams, sand retaining dams, flood diversion and flooding projects, landslide control projects, etc. 2.1.2 The technical management of soil and water conservation engineering measures shall comply with the following provisions: 1 Strengthen engineering inspection and maintenance before the flood season and after each heavy rain to ensure that the project is safe within the designed flood control standards.
2 Protect the hard and ridge protection plants and surrounding forest and grass vegetation of the project, and prohibit human damage.
3 Carry out monitoring of the economic, ecological and social benefits of the project. 2.2 Terraces
2 .2.1 The key points of maintenance should be to maintain the smooth connection between the terraced fields’ drainage and water system projects and the slope water system projects, maintain the stability of the field ridges, fields and field roads, keep the field surface flat, improve the physical and chemical properties of the terraced soil, and increase soil fertility. 2.2.2 Field drainage and water storage projects and field roads should be maintained before the flood season and after heavy rain every year, including: repairing damaged ditches, consolidating the soil in the ditches, removing the silt and debris accumulated in the ditches, repairing collapsed field roads and damaged roads, and maintaining the integrity of water storage projects and the smooth flow of drainage projects and field roads. The maintenance of ridges should meet the following requirements:
1 Ridges: Protect ridge and ridge protection plants, strengthen nurturing management and pest and disease control. After heavy rain, an inspection should be carried out, and if ridges and ridges are found to be damaged, they should be repaired in time. ||tt| |2 Stone sills: Check the stone sills regularly to see if they are stable, loose, tilted, collapsed, etc., and repair them in time if any problems are found. Plants with economic value can be planted on the inner side of the sills of stone sill terraces.
2.2.4 New terraces should be plowed deeply to promote the maturation of raw soil, increase fertilizer or plant green manure, improve the physical and chemical properties of the soil, and increase soil fertility. 2.3 Horizontal terraces (reverse slope terraces)
2.3.1 The key points of maintenance should be to keep the horizontal terraces flat and the sills stable, and to keep the slope water system engineering and the horizontal terrace drainage ditch connected and unobstructed. 2.3.2 Before the flood season and after heavy rain, the silt and debris in the slope water system engineering and the horizontal terrace drainage ditch should be removed to keep the water flow unobstructed. The sill maintenance shall be carried out in accordance with the provisions of Article 2.2.3.
For horizontal terraces where economic fruit trees are planted, forage grass can be planted on the terraces. 2.3.4
2.4 Horizontal ditch (horizontal bamboo ditch)
2.4.1 The key points of management and maintenance should be to keep the ditch hard and stable, build up the soil retaining wall, and protect the vegetation on the slope between the ditches.
2.4.2 The ditch and soil retaining wall should be built up before the flood season and after heavy rain every year. The overflow outlet of the horizontal ditch should be connected to the drainage ditch smoothly, and the turf or lining of the overflow outlet should be maintained. If the horizontal ditch is filled with silt before the design service life, it should be desilted according to the requirements of the design service life. The main retaining wall should be protected during desilting.
2.4.3 Shrubs and grass suitable for local conditions can be planted on the ditch to prevent erosion. 2.5 Fish scale pit
The key points of management and maintenance should be to keep the slope drainage unobstructed and maintain the stability of the fish scale pit.
The maintenance of the pit should comply with the following regulations:
Stone: The stone should be kept stable. If a collapse or erosion is found, it should be repaired in time. 2. Soil: Before the flood season and after heavy rain every year, the soil should be compacted and hardened. In areas with conditions, shrubs and grasses with strong soil-fixing ability can be planted on the soil. 2.5.3 The water storage and drainage ditches between the slope and the fish scale pit should be regularly maintained to prevent floods from destroying the fish scale pit.
2.5.4 The original vegetation around the fish scale pit should be protected. 2.6 Intercepting ditches
The management should be to keep the intercepting ditches stable and the slope storage and drainage project connected smoothly. 2.6.1
Key points.
The intercepting ditch should be kept stable to prevent water scouring and meet the following requirements: 1
Debris.
Before the flood season and after heavy rain, check whether the connection of the entire canal system is unobstructed, and remove the grass and shrubs in the ditch, ditch walls and slopes to prevent damage. If the ditch, ditch walls and ditch bottom collapse, sink, crack and other phenomena occur, they should be repaired and reinforced in time. When the ditch bottom and ditch walls are severely scoured, they should be reinforced or lined.
4The outlet joints of the intercepting ditch should be maintained regularly. If scouring or damage is found, they should be repaired and reinforced in time.
The ditch ditch should be desilted in accordance with the following regulations:
Drain 1 to 2 times a year, and avoid damaging the ditch bottom and ditch walls when desilting. The cleared silt can be spread on the ditch hard surface on the spot and leveled and compacted. The anti-seepage and anti-leakage of intercepting ditches shall comply with the following provisions: 1
For those with anti-seepage treatment, if leakage is found, it shall be re-treated in time according to the original construction design requirements.
For those without anti-seepage treatment, dig up the leaking water, fill and tamp it, and replant the turf.
2.7 Drainage ditches
2.7.1 The maintenance focus shall be on keeping the drainage ditch stable and unobstructed, and strengthening the inspection and maintenance of the outlet and anti-scouring facilities.
2.7.2 Before the flood season and after heavy rain, the drainage ditch shall be fully inspected, and the subsidence, collapse, cracks and damaged ditch bottom and ditch wall of the drainage ditch shall be repaired in time. If the waterfall and outlet are severely scoured, block stone paving or concrete reinforcement shall be used. 2.7.3 The provisions of Articles 2.6.3 and 2.6.4 shall be followed for dredging and anti-seepage. 4
2.8 Lei Reservoir
2.8.1 The key points of management and maintenance should be to strengthen inspections during the flood season (especially before and after heavy rain), ensure that the connection between the reservoir and the drainage ditch is unobstructed, maintain the safety of the project, and prevent the pool wall from drying up (in the dry season).
During the flood season, the relationship between preventing mountain torrents and effectively storing water should be properly handled. Pools used for drinking water for humans and livestock should prevent water source pollution. 2.8.3
The anti-seepage and anti-leakage treatment should comply with the following regulations: 2.8.4
1 Pool bottom seepage and cleaning treatment: The leakage site should be identified, and the light mud and debris on the upper part and around it should be removed, and local foundation cleaning should be carried out. For concrete bottom, sand and gravel should be laid first, and then concrete should be poured. The repaired part should be kept flat with the original pool bottom. For the pool bottom using other anti-seepage materials, clay should be backfilled and compacted first, and then repaired with the original paving materials, and the repaired part should be kept flat with the original pool bottom.
2 Treatment of pool wall leakage: First clean the leakage, then treat it according to the original construction design requirements, and keep the repaired area flat with the original pool wall. 2.8.5 Dredging should comply with the following regulations:
, 1 Dredging should be carried out once a year. When silt accumulation is serious, the number of dredging should be increased.
2 When dredging, the pool water should be drained first, and then the dredging should be carried out in layers until the bottom plate surface. When dredging, damage to the anti-seepage layer at the bottom of the pool should be prevented. 3 The silt removed from the pool can be applied to the field directly or mixed with farmyard manure.
2.8.6 Before the flood season and after heavy rain every year, the water diversion channel should be inspected and the silt and debris in the channel should be removed.
2.8.7 The overflow and drainage holes should be regularly maintained to keep the drainage unobstructed. 2.8.8 Large-crowned trees can be planted around the uncovered reservoir or covered with plastic film to reduce evaporation from the water surface. When planting trees, the tree species and planting location should be selected.
2.8.9 Water storage tanks with large volume and depth should be equipped with guardrails, and warning signs should be erected beside the tanks.
2.9 Water cellars
The focus of water cellar maintenance, silt prevention, pollution prevention and epidemic prevention should be the daily maintenance of water cellars. 2.9.1
2.9.2 Before the rain, the rainwater collection area and water diversion channel should be cleaned. When it rains, water should be diverted in time; when the water storage reaches the required height, the water inlet should be immediately closed. 2.9.3 The water level changes in the cellar should be observed frequently. When the water level drops suddenly, the cause should be found out and handled.
2.9.4 If collapse, cracks, leakage or seepage are found, they should be repaired and handled in time, and the following requirements should be met:
1 Collapse repair: Pay attention to safety, first evacuate the water storage, remove the loose concrete and soil blocks in the collapsed part, and then repair it according to the construction design requirements. After repair, the debris and silt in the cellar should be removed in time, and an appropriate amount of water should be poured in. 2 Repair of cracks, water leakage and water seepage: First, empty the water storage, remove the silt, and then fill the cracks or leaks with cement mortar and lime mortar, and then compact and smooth it. 2.9.5 The water cellar should be desilted 12 times a year, and the ancillary equipment of the water cellar should be maintained regularly. 2.9.6 When the incoming water is seriously turbid or suffers from harmful pollution, the water inlet should be closed immediately, the cause should be found out, and timely treatment should be carried out. If the toxic water in the water cellar has been polluted, it should be stopped from use, the water storage should be emptied in time, the pollution source should be removed and disinfected, and the water storage should be used after meeting the hygiene standards.
2.10 Ponds and weirs (mountain ponds, flood ponds)
2.10.1 The dam body and supporting facilities should be inspected and maintained before the flood season and after the heavy rain, and the key to management and maintenance should be to ensure that the flood season is safe within the design defense standards. 2.10.2 After the ponds and weirs are built, the responsible entities for maintenance shall be determined and the maintenance responsibilities shall be implemented. 2.10.3 Before the flood season and after heavy rains, the drainage ditches, dam bodies (earth dams, stone dams), spillways, water discharge culverts and other facilities connected to the ponds and weirs shall be fully inspected and maintained. When heavy rains occur during the flood season, someone should patrol and deal with problems in a timely manner. When the dam body sinks, cracks, leaks, and the spillways and water discharge culverts are damaged, they should be repaired in time. Repairs should be carried out in accordance with the relevant provisions of the Technical Specifications for Small Water Conservancy Projects. 2.10.4 It is strictly prohibited to take soil, build, blast, and other activities that may damage the dam body in and around the dam body.4 If collapse, cracks, water leakage or water seepage are found, they should be repaired and handled in time, and the following requirements should be met:
1 Collapse repair: Pay attention to safety, first empty the water storage, remove the loose concrete and soil blocks at the collapsed part, and then repair it according to the construction design requirements. After the repair, the debris and silt in the cellar should be removed in time, and an appropriate amount of water should be poured. 2 Crack, water leakage and water seepage repair: First empty the water storage, remove the silt, and then fill the cracks or leaks with cement mortar or lime mortar, and then compact and smooth them. 2.9.5 The water cellar should be desilted 12 times a year, and the water cellar ancillary equipment should be maintained regularly. 2.9.6 When the incoming water is seriously turbid or suffers from harmful pollution, the water inlet should be closed immediately, the cause should be found out, and timely treatment should be carried out. If the toxic water in the water cellar has been polluted, it should be stopped from use, the water storage should be emptied in time, the pollution source should be removed and disinfected, and the water storage should be used after meeting the hygiene standards.
2.10 Ponds and weirs (mountain ponds, waterlogging ponds)
2.10.1 The dam bodies and supporting facilities should be inspected and maintained before the flood season and after heavy rains, and the focus of maintenance should be to ensure that they can safely pass the flood season within the design standards for flood and rainstorm defense. 2.10.2 After the construction of ponds and weirs, the responsible entity for maintenance should be determined and the maintenance responsibilities should be implemented. 2.10.3 Before the flood season and after heavy rains, the drainage ditches, dam bodies (earth dams, stone dams), spillways, water discharge culverts and other facilities connected to the ponds and weirs should be fully inspected and maintained. When heavy rains occur during the flood season, someone should patrol and deal with problems in a timely manner. When the dam body sinks, cracks, leaks, and the spillway and water discharge culvert are damaged, it should be repaired in time. Repairs should be carried out in accordance with the relevant provisions of the Technical Specifications for Small-scale Water Conservancy Projects. 2.10.4 It is strictly prohibited to take soil, build, blast, and other activities that may damage the dam body in and near the dam body.4 If collapse, cracks, water leakage or water seepage are found, they should be repaired and handled in time, and the following requirements should be met: Www.bzxZ.net
1 Collapse repair: Pay attention to safety, first empty the water storage, remove the loose concrete and soil blocks at the collapsed part, and then repair it according to the construction design requirements. After the repair, the debris and silt in the cellar should be removed in time, and an appropriate amount of water should be poured. 2 Crack, water leakage and water seepage repair: First empty the water storage, remove the silt, and then fill the cracks or leaks with cement mortar or lime mortar, and then compact and smooth them. 2.9.5 The water cellar should be desilted 12 times a year, and the water cellar ancillary equipment should be maintained regularly. 2.9.6 When the incoming water is seriously turbid or suffers from harmful pollution, the water inlet should be closed immediately, the cause should be found out, and timely treatment should be carried out. If the toxic water in the water cellar has been polluted, it should be stopped from use, the water storage should be emptied in time, the pollution source should be removed and disinfected, and the water storage should be used after meeting the hygiene standards.
2.10 Ponds and weirs (mountain ponds, waterlogging ponds)
2.10.1 The dam bodies and supporting facilities should be inspected and maintained before the flood season and after heavy rains, and the focus of maintenance should be to ensure that they can safely pass the flood season within the design standards for flood and rainstorm defense. 2.10.2 After the construction of ponds and weirs, the responsible entity for maintenance should be determined and the maintenance responsibilities should be implemented. 2.10.3 Before the flood season and after heavy rains, the drainage ditches, dam bodies (earth dams, stone dams), spillways, water discharge culverts and other facilities connected to the ponds and weirs should be fully inspected and maintained. When heavy rains occur during the flood season, someone should patrol and deal with problems in a timely manner. When the dam body sinks, cracks, leaks, and the spillway and water discharge culvert are damaged, it should be repaired in time. Repairs should be carried out in accordance with the relevant provisions of the Technical Specifications for Small-scale Water Conservancy Projects. 2.10.4 It is strictly prohibited to take soil, build, blast, and other activities that may damage the dam body in and near the dam body.
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