1. Compared with the bored pile, the manual bored pile in the construction process has the advantages of simple mechanical equipment, convenient construction operation, small space and space occupation, no mud discharge, little impact on the surrounding environment and buildings, reliable construction quality, comprehensive construction, shortened construction period and low cost. Therefore, it has been widely used in recent years, especially in the pile foundation construction of enlarged head. Manual digging pile construction has its advantages, which can make up for some shortcomings of mechanical construction. Digging pile is suitable for dense soil layer or weathered rock layer without groundwater or a little groundwater. If the air pollutants produced in the hole exceed the national standard, ventilation measures must be taken before manual digging pile construction can be adopted.
2, manual digging pile construction process management
1) under the guidance of the project department, the blasting operation headquarters is set up, which is composed of the head of blasting, technical director, safety officer and team leader, and each professional type of work holds relevant certificates.
2) Establish a centralized sending and receiving system for blasting equipment, and distribute materials according to workload. After the completion of the construction on duty, the surplus blasting materials should be handed over to the distributing personnel for recycling in time, so as to achieve centralized distribution, unified production, unified recycling and centralized storage, and strict registration procedures to prevent the blasting materials from flowing into the society.
3) Arrange the operation time and blasting time, and announce the blasting time to the surrounding residents.
4) The general manager of blasting is responsible for the construction organization, personnel deployment and production arrangement, and is fully responsible for safety and production.
5) The technical director is responsible for the technical work in the construction process, and supervises the safety and quality, and comprehensively directs the implementation of 10 blasting.
6) The safety officer is responsible for on-site safety inspection, arrangement and inspection of blasting warning.
7) The blaster is responsible for initiation.
3, manual digging pile construction technology organization
The blasting of hole pile into rock usually adopts blasting professional operation method or mixed operation method. Professional operation method means that the professional team is engaged in blasting work full-time, responsible for drilling, hole cleaning, charging, connection, blasting, ventilation, and handling blind and dumb guns, while other operation teams are responsible for drilling, slag removal, slag discharge and hole protection. Mixed operation method, that is, drilling, charging, connecting, blasting, handling squibs and squibs is the responsibility of one group, and the rest is the responsibility of the other group.
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