Operation Instruction for Supervision of Concrete Seepage Control for Danger Removal and Reinforcement of a Reservoir
Data catalogue 1 Project description 1 1.1 Project overview 1 1.2 Main quantities 1 2 Project milestones and important activities 2 3 Land handover and pipeline relocation 2 Browse detailed catalogue>>Content introduction 1 Project description 1.1 Project overview 1.2 Main quantities 2 Project milestones and important activities 3 Land handover Pipeline relocation 4 Project plan and progress 4.1 Comparison of actual completion and progress plan of this month 4.2 Analysis of progress completion 4.3 Measures taken and effects of this month 5 Project quality 5.1 Division Acceptance of subdivisional works 5.2 Test and detection of works 5.3 Site supervision 5.4 Analysis of project quality 5.5 Measures and effects taken this month 6 Safe production Civilized construction 7 Contractor's contract implementation 7.1 Project measurement approval 7.2 Project payment approval and payment 7.3 Analysis of project payment 7.4 Measures taken this month and their effects 7.5 Project change implementation 8 Supervision implementation 8.1 Organization of the project supervision department 8.2 Supervision statistics 9 Summary of supervision work this month 10 Appendix (1) Table 1: Summary of Undelivered Land within the Red Line (see Table 1) (2) Table 2: Summary of Undelivered Pipelines (see Table 2) (3) Table 3: Summary of Implementation of Construction Plan (4) Table 4: Summary of Test and Detection Results (5) Table 5: Summary of Project Payment Approval and Payment (6) Table 6: Details of Project Changes (7) Table 7: Summary of Attendance of Supervisors (8) Table 8: Summary of changes in supervision personnel (9) Table 9: Night duty list of supervision personnel (10) Table 10: Statistical summary of supervision work (11) Table 11: Summary of project rectification Key points of supervision control in the construction preparation stage of concrete cutoff wall in 2009 Key points of supervision control in the construction stage of concrete cutoff wall 1. Key points of quality control: (1) Approval of mobilization equipment, materials and concrete construction mix ratio, Witness the inspection of raw materials entering the site, self check and sampling by the contractor (the quantity shall be in accordance with the requirements of hydraulic concrete construction specifications), and parallel sampling inspection of raw materials entering the site and concrete test blocks by the supervisor (the quantity is 15%~20% of the self check quantity of the contractor). (2) Positioning inspection: check the pile number of each groove section and the deviation of the guide groove, notify the construction unit to deal with the parts with large deviation, and immediately re measure and set out the axis of the collapsed groove section and the parts of the construction platform with cracks to meet the requirements of hole making and positioning. (3) Inspection of hole making process: footage speed, mud surface condition, whether there is any abnormality in the drilling, unit drilling records, self inspection records of hole inclination construction, etc. When the mud surface drops below 50cm from the top surface of the guide wall, the slurry shall be supplemented in time, and if the slot section is found to have cross holes and mud leakage, the causes shall be found and handled in time before hole making. (4) . Final hole inspection: ① bedrock surface identification, which is jointly identified by the design geological engineer, the supervision engineer and the technical personnel of the construction unit. Rock samples taken from each main hole are fully inspected at the drilling site, and the corresponding elevation is measured as the bedrock surface elevation after it is determined as weakly weathered rock. The depth into the weakly weathered rock surface must be greater than the design required final hole depth; ② Spot check the hole depth, the small wall splitting between the main hole and the auxiliary hole (use a steel wire rope to hang the drill bit to detect and reach the average depth of the main and auxiliary holes is qualified), and whether the groove width, hole orifice deviation, hole bottom deviation and hole slope meet the design and specification requirements (hole slope is calculated using the similar triangle principle). The number of spot checks should be more than one-third of the number of slot holes in this slot section; ③ The joint hole of the second phase slot section is a full inspection hole. The deviation of the secondary hole position center line of the first and second phase slot joint holes is calculated by measuring the deviation of the joint hole, which should be less than the design requirements. The drilling depth of the second phase slot is greater than or equal to the depth of the first phase slot hole, which is qualified (the joint hole is constructed by the sleeve drilling method, which should be drilled 24 hours after the concrete pouring and warehousing of the first phase slot section) 4600 words