T/ZZXJX 252-2022 Active Group standards

T/ZZXJX 252-2022 Technical Specifications for the Application of Water Drainage in Building Foundation Pits

T/ZZXJX 252-2022

Publish Date: 2022-12-26 Implement Date: 2022-12-26 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/ZZXJX 252-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Earthwork, excavation, foundation construction, and underground engineering

Publish Date: 2022-12-26

Implement Date: 2022-12-26

Scope

Main technical content: 1. Scope 2. Normative reference documents 3. Terms and definitions 4. Basic requirements 5. Investigation of dewatering projects 5.1 General requirements 5.2 Arrangement of hydrological and geological investigation boreholes 5.3 Pumping test and calculation of hydrological and geological parameters 6. Construction and acceptance of dewatering projects 6.1 General requirements 6.2 Dewatering wells 6.3 Vacuum well points, jet well points 6.4 Open drainage 6.5 Infiltration wells 6.6 Waterproof curtains 7. Operation and maintenance of dewatering projects, site drainage 7.1 General requirements 7.2 Operation and maintenance 8. Monitoring of dewatering projects 8.1 General requirements 8.2 Water level monitoring 8.3 Water discharge and sand content monitoring 8.4 Water quality monitoring 8.5 Ground settlement monitoring 8.6 Monitoring and early warning 8.7 Monitoring results