Detail of SL 265-2016

Introduction of SL 265-2016

1 General Provisions 1.0.1 This Specification is developed with a view to unifying the design criteria and technical requirements of sluice, improving sluice design level, and realizing the purpose of advanced technology, safety and reliability, economic rationality, practicability and durability, management convenience and environment harmony. 1.0.2 This Specification is applicable to newly constructed, extended reinforced and renovated large-sized and medium-sized sluice design, and it may apply by making reference for small-sized sluice design; special study shall be carried out for the design of large-sized sluices with complicated technique. 1.0.3 Sluice project rank, structure grade and flood criteria, design service life and durability requirement as well as safety monitoring design shall meet those specified in SL 252 Standard for Classification and Flood Control of Water Resources and Hydroelectric Project, SL 654 Specification for Rational Utilization Period and Durability Design of Water Resources and Hydroelectric Project and SL 725 Design Specification for Safety Monitoring in Water and Hydropower Projects respectively. 1.0.4 Various basic information shall be carefully collected and processed for sluice design; the selected basic information shall be accurate and reliable, and meet the design requirements. 1.0.5 As for sluice design, it is necessary to proceed from reality, extensively gain engineering practice experience, carry out necessary scientific experiment and actively and advisedly adopt new construction, new technique, new material and new equipment. 1.0.6 For the purpose of this Specification, the following standards are mainly cited: GB 50007 Code for Design of Building Foundation GB/T 50290 Technical Standard for Applications of Geosynthetics GB 50487 Code for Engineering Geological Invcstigation of Water Resources and Hydropower GB 50706 Code for Design of Occupational Safety and Health of Water Resources and Hydropower Projects SL 41 Design Code for Gate Hoist in Water Resources and Hydropower Projects SL 72 Regulation for Economic Evaluation of Water Conservancy Construction Projects SL 74 Hydraulic and Hydroelectric Engineering Specification for Design of Steel Gate SL 191 Design Code for Hydraulic Concrete Structures SL 203 Specifications for Seismic Design of Hydraulic Structures SL 252 Standard for Classification and Flood Control of Water Resources and Hydroelectric Project SL 253 Design Code for Spillway SL 264 Specifications for Rock Tests in Water Conservancy and Hydroelectric Engineering SL 319 Design Specification for Concrete Gravity Dams SL 379 Design Specification for Hydraulic Retaining Wall SL 609 Guideline for Fishway in Water Conservancy and Hydropower Project SL 654 Specification for Rational Utilization Period and Durability Design of Water Resources and Hydroelectric Project SL 725 Design Specification for Safety Monitoring in Water and Hydropower Projects DL/T 5207 Technical Specification for Abrasion and Cavitation Resistance of Concrete in Hydraulic Structures JGJ 79 Technical Code for Ground Treatment of Buildings JTG B01 Technical Standard of Highway Engineering 1.0.7 Sluice design shall comply with not only the requirements of this Specification but also those in the current relevant ones of the nation. 2 Terms 2.0.1 sluice sill elevation elevation of weir crest of sluice chamber where water flowing through, which refers to the base plate top elevation in case of flat base plate 2.0.2 gate opening ratio of discharge section height below gate bottom to water depth of discharge section above sluice sill top when the gate is opened, also called relative opening 2.0.3 retaining wall structure on both sides of sluice chamber which is capable of retaining soil, reducing load on horizontal edge and extending lateral seepage prevention length 2.0.4 wing wall structures arranged on upstream and downstream of both sides of sluice used for guiding, adjusting water flow and retaining soil, which are generally symmetrically arranged on both sides in wing shape 2.0.5 key wall strip structure arranged below the base plates of such structures as sluice chamber, wing wall, retaining wall, etc. used for improving the stability against sliding of structure and seepage condition 2.0.6 cutoff buttress wall-shaped structure arranged behind and connected to wing wall or retaining wall so as to improve lateral seepage condition 2.0.7 anti-scouring key wall strip anti-scouring structure adopted in case the calculated scour depth at upstream apron front end or downstream apron tail end of sluice is small 2.0.8 anti-sliding plate supplemental anti-sliding stability safety measures of using reinforced concrete for covering or arranging reinforced concrete planker structure 2.0.9 boundary load filling soil or other additional load causing deformation of sluice subgrades on both sides of sluice chamber 3 Sluice Site Selection 3.0.1 Sluice site shall be selected according to sluice function, characteristic and application requirements, taking comprehensive consideration of such factors as landform, geology, water flow, tide, erosion and deposition, frozen earth, ice condition, submerge, land requisition and resettlement, environment, construction, management etc. and through technical and economical comparison. 3.0.2 As for sluice site, active fault zone should be avoided, and site in open terrain with stable bank slope, solid rock-soil and low groundwater level shall be selected; natural subgrade with good geological conditions should be selected as sluice site, and manually treated subgrade shall be adopted through technical and economical comparison. 3.0.3 As for regulating sluice or flood diversion sluice, its site should be selected at the river stretch with straight riverway and relatively stable river regime, and may also be selected on newly opened riverway which is at straight part of curved river stretch through technical and economical comparison; if lateral water inlet is inevitable when selecting sluice site, lateral flow-guiding facility should be arranged. 3.0.4 As for water intake sluice, diversion sluice or flood diversion sluice, its site should be selected straight reach with the river bank basically stable or the slightly downstream place of concave bank apex of curve river stretch; the site of flood diversion sluice should not be selected at dangerous dam segment or downstream dam segment of protected important town. 3.0.5 As for drainage sluice or discharging sluice (waste sluice), its site should be selected at low place with unblocked water outlet; the site of drainage sluice should be selected on the old dam line close to main waterlogging area and drainage receiver. 3.0.6 The site of tidal sluice should be selected at where is nearby tidal estuary with stable bank line and bank slope, with small erosion and deposition at thalweg and flood land as well as sufficient water storage capacity on upstream riverway. 3.0.7 As for the sluice constructed on downstream riverway of multi-branch confluent port, there should be certain distance between its site and confluent port. 3.0.8 As for sluice constructed nearby the estuary intersection in plain area with river network, its site should be far away from the estuary intersection. 3.0.9 As for sluice constructed nearby railway bridge or high-grade highway bridge, the distance between its site and railway bridge or high-grade highway bridge should not be too small; if sluice is to be constructed in conjunction with ordinary highway bridge, analysis and demonstration shall be carried out. 3.0.10 Land requisition and resettlement scheme for sluice site shall be so selected that the lands to be requisited and the houses to be relocated are less and it facilitates resettlement and social stability. 3.0.11 Sluice site selection shall facilitate ecological environment protection and beautification. 3.0.12 As for sluice site selection, material source, external traffic, construction diversion, site layout, building pit drainage, water and electricity supply for construction as well as project management maintenance and flood fighting should be taken into consideration.

Contents of SL 265-2016

Foreword ii 1 General Provisions 2 Terms 3 Sluice Site Selection 4 General Layout 4.1 Hydroproject Layout 4.2 Sluice Chamber Layout 4.3 Arrangement for Seepage Prevention and Drainage 4.4 Energy Dissipation and Anti-scouring Layout 4.5 Bank-connection Layout 5 Hydraulic Design 6 Seepage Prevention and Drainage Design 7 Structure Design 7.1 General 7.2 Load Calculation and Its Combination 7.3 Sluice Chamber Stability Calculation 7.4 Stability Calculation of Retaining Wall and Wing Wall 7.5 Structural Stress Analysis 7.6 Structure Seismic Design and Measures 8 Subgrade Calculation and Treatment Design 8.1 General 8.2 Subgrade Overall Stability Calculation 8.3 Subgrade Settlement Calculation 8.4 Subgrade Treatment Design 9 Reinforcement and Renovation Design 10 Engineering Management Design 10.1 General 10.2 Management Scope and Protection Scope 10.3 Dispatching and Application 10.4 Management Facilities 10.5 Communication and Management Automation 10.6 Annual Operation Management Expenses of the Engineering Annex A Calculation for Total Clear Width of the Sluice Holes Annex B Calculation for Energy Dissipation and Anti-scouring Annex C Calculation for Seepage Pressure Annex D Soil Pressure Calculation Annex E Wave Pressure Calculation Annex F Rock and Soil Classification Annex G Division of Soil Subgrade Annex H Calculation of the Permissible Bearing Capacity for the Subgrade Annex I Calculation of Foundation Additional Stress Explanation of Wording in this Specification