T/ZZXJX 117-2021 Guidelines for Top-Mounting and Laying Out Plastic Drainage Pipes Technology
T/ZZXJX 117-2021 Guidelines for Top-Mounting and Laying Out Plastic Drainage Pipes Technology
Basic Information
Scope
Main technical content: Preface 1 Scope 2 Normative reference documents 3 Terms and definitions 4 Basic provisions 4.1 General provisions 4.2 Engineering survey provisions 4.3 Engineering design provisions 5 Selection of pipes and structural requirements for pipe fittings 5.1 Materials 5.2 Requirements 6 Construction of working wells 7 Construction of receiving wells 8 Pipe jacking construction 8.1 General provisions 8.2 Guiding holes 8.3 Pipe hoisting 8.4 Pull-back reaming, mud balance jacking 8.5 Reaching the target 8.6 Grouting to reduce friction 8.7 Measurement and correction 8.8 Other provisions 9 Construction monitoring and acceptance standards 9.1 Construction monitoring 9.2 Project acceptance standards 10 Safety and civilized construction 10.1 General provisions 10.2 Safety assurance measures 10.3 Civilized construction measures 10.4 Environmental protection measures