SL/T 31.3-2025Specification for In-situ Testing of Soil and Rock Permeability in Water Conservancy and Hydropower Projects - Part 3: Borehole Pumping Test (English PDF)
水利水电工程岩土渗透性原位试验规程 第3部分: 钻孔抽水试验
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Issued by
Ministry of Water Resources
Level / Type
National · Recommended
Issue date
September 29, 2025
Implementation date
December 29, 2025
Scope
SL/T 31.3-2025 is the English-translated version of 水利水电工程岩土渗透性原位试验规程 第3部分: 钻孔抽水试验.
SL/T 31.3-2025 — Specification for In-situ Testing of Soil and Rock Permeability in Water Conservancy and Hydropower Projects - Part 3: Borehole Pumping Test
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Document preview — SL/T 31.3-2025
National Standard of the People's Republic of China
- Replacing
- SL 320-2005
Issued by: Ministry of Water Resources
Contents
- [Preview only]
- 1 Scope
- 2 Normative References
- 2.1 Terms
- 3 Terms and Definitions
- 4 Overview
- 4.1 General requirements
- 5 Technical Requirements
- 6 Calibration conditions
- 6.1 Environmental conditions
- 6.2 Measurement standards and other equipment
- 7 Calibration items and calibration methods
- 7.1 Calibration Items
- 7.2 Calibration method
- 8 Expression of calibration results
- 9 Recalibration interval
1 Foreword
SL/T 31.3-2025 was issued by Ministry of Water Resources on 29 September 2025 and has been in force since 29 December 2025.
It replaces the earlier edition SL 320-2005.
It is one of 3 parts of the SL/T 31 series.
2 Scope Preview
SL/T 31.3-2025 carries no ICS number and no Chinese Standard Classification code.
This catalogue holds 229 other SL/T standards.
Of the 74 SL/T standards that do carry an ICS number, 24 (32%) fall under ICS 27, in the field of energy and heat transfer engineering.
3 About this standard
Issued by: Ministry of Water Resources
English translation: about 71 pages
Chinese original: about 107,118 characters
Supersedes the earlier edition SL 320-2005.
4 Related standards
Other parts of this standard:
SL/T 31.1-2025 — Part 1: Borehole Pressure Water Test
SL/T 31.2-2025 — Part 2: Water Injection Test
Standards on related subjects:
SL/T 219-2026 — Specifications for water quality and aquatic ecosystem monitoring
SL/T 311-2025 — Specifications for the selection of high-voltage electrical equipment and the design of power distribution devices in water conservancy and hydropower projects
5 Classification and status
Prefix SL/T: recommended standard.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 71 pages — is available in the English PDF.
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Related Standards
SL/T 31.2-2025 — Specification for In-situ Testing of Soil and Rock Permeability in Water Conservancy and Hydropower Projects - Part 2: Water Injection Test
SL/T 31.1-2025 — Specification for In-situ Testing of Soil and Rock Permeability in Water Conservancy and Hydropower Projects - Part 1: Borehole Pressure Water Test
SL/T 219-2026 — Specifications for water quality and aquatic ecosystem monitoring
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SL/T 31.3-2025
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