A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Double-pipeline conveying drill tool for composite pile
The invention relates to a double-pipeline conveying drill tool for a composite pile. According to the double-pipeline conveying drill tool for the composite pile, a drill bit is arranged at the bottom of a drill pipe and rotationally connected with the drill pipe, and a cutting blade is arranged at the bottom of the drill pipe and located above the drill bit; the drill pipe is a hollow tube and provided with an independent nozzle in the bottom, an independent pipeline is arranged in the drill pipe, the bottom end of the independent pipeline is communicated with the independent nozzle, and the top end of the independent pipeline is communicated with an independent charge pump station through an independent conveying guide tube; and a second charge pump station is communicated with a hollow part in the drill pipe through a second conveying guide tube. The drill tool can be used on a conventional cement-soil mixing pile machine, thus the modification cost of the pile machine is saved; formation for the cored composite pile is realized, thus the bearing capacity of a mixing pile is greatly improved and foundation post-construction settlement is effectively reduced; the double pipelines are capable of realizing conveying for cement paste and concrete or many other proper soil body reinforcement materials, thus the drill tool finishes formation for many types of composite piles with different strengths, and is wide in applicability; and one-step formation for a peripheral stirring pile and a core pile is realized, thus the coaxiality of the core pile and the peripheral stirring pile is ensured, and the construction process is simplified.
Double-pipeline conveying drill tool for composite pile
The invention relates to a double-pipeline conveying drill tool for a composite pile. According to the double-pipeline conveying drill tool for the composite pile, a drill bit is arranged at the bottom of a drill pipe and rotationally connected with the drill pipe, and a cutting blade is arranged at the bottom of the drill pipe and located above the drill bit; the drill pipe is a hollow tube and provided with an independent nozzle in the bottom, an independent pipeline is arranged in the drill pipe, the bottom end of the independent pipeline is communicated with the independent nozzle, and the top end of the independent pipeline is communicated with an independent charge pump station through an independent conveying guide tube; and a second charge pump station is communicated with a hollow part in the drill pipe through a second conveying guide tube. The drill tool can be used on a conventional cement-soil mixing pile machine, thus the modification cost of the pile machine is saved; formation for the cored composite pile is realized, thus the bearing capacity of a mixing pile is greatly improved and foundation post-construction settlement is effectively reduced; the double pipelines are capable of realizing conveying for cement paste and concrete or many other proper soil body reinforcement materials, thus the drill tool finishes formation for many types of composite piles with different strengths, and is wide in applicability; and one-step formation for a peripheral stirring pile and a core pile is realized, thus the coaxiality of the core pile and the peripheral stirring pile is ensured, and the construction process is simplified.
Double-pipeline conveying drill tool for composite pile
FU ZHIBIN (author) / LI YAOGANG (author) / WU WEI (author) / CAO SUYU (author) / CHEN JIEQIN (author) / WEN HAICHENG (author) / WANG DAWEI (author) / SHAO ZHONG (author) / ZHOU ZHENHONG (author) / CHEN MINGXIONG (author)
2015-11-18
Patent
Electronic Resource
English
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