Standard No.:	SL 285-2003
English Name:	Design specification for intake of hydraulic and hydroelectric engineering
Chinese Name:	水利水电工程进水口设计规范
Chinese Classification:	P59    Water power engineering
Professional Classification:	SL    Professional Standard - Water Resources
Issued by:	Ministry of Water Resources
Issued on:	2003-05-20
Implemented on:	2003-8-1
Status:	superseded
Superseded by:	SL 285-2020 Design specification for intakes of water and hydropower projects
Superseded on:	2021-2-28
Superseding:	SD 303-1988
Language:	English
File Format:	PDF
Word Count:	9000 words
Price(USD):	220.0
Delivery:	via email in 1 business day

1.0.1 This specification was made to make clear of the design requirements of intake of hydraulic and hydroelectric engineering, unify design standards and make the standard safe and suitable for use technically and economically. 1.0.2 This specification is applicable to all kinds of intake design of different design stages in the hydraulic and hydroelectric engineering. The design shall be simplified for intakes of small hydraulic and hydroelectric engineering and temporary engineering and is not applicable to intakes of energy-disparate spillway tunnels in the vertical shafts. 1.0.3 The design of intake of hydraulic and hydroelectric engineering must collect basic data on topography, geology, and hydrology, silt, floating dirt, ice condition, weather, and earthquake and reservoir operation. 1.0.4 Design of intake of hydraulic and hydroelectric engineering shall conform to the current national policy of technical economy, continuous generalized experience and take on scientific experiment and actively take advanced technology at home and abroad with caution and strive for innovation and advancement. 1.0.5 Design of intake of hydraulic and hydroelectric engineering shall conform to provisions of this specification and provisions in current national standards as well.

Foreword 1 General Provision 2 Terms 3 Level of Intake Structures and Design Standards 3.1 Level of intake structures 3.2 Design standards 4 Project Arrangements 4.1 General Stipulations 4.2 Type and shape of intake 4.3 Layout of intake of diversion project 4.4 Layout of intake of discharge project 5 Control of Sand, Soil and Ice 5.1 Control of sand 5.2 Antifouling 5.3 Ice control 6 Hydraulic Designs 7 Structural Design and Sub-grade Treatment 7.1 General stipulations 7.2 Load and load combination 7.3 Calculation of integral stability, sub-grade stress and settlement 7.4 Structural design 7.5 Sub-grade treatment 8 Safety Monitoring Annex A Intake Shape Annex B Hydraulic Computation B.1 Head loss calculation B.2 Minimum insertion depth of pressure inlet