Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for pipe-following drilling micro pile of slewing drilling machine
The invention discloses a construction method for a pipe-following drilling micro pile of a slewing drilling machine. The drilling machine is installed in place, and the orientations and angles of a drill pipe and a drill bit are adjusted to be uniform with design parameters; after preparation, drilling starts to be performed; a direct cycle method is adopted, and circulating water is utilized for cooling the drill bit and removing slag; a wall-protecting steel casing pipe follows and is pressed synchronously every time drilling is performed by 0.25 m-0.5 m, and the distance between the wall-protecting steel casing pipe and the bottom of a hole is smaller than or equal to 0.5 m; every time drilling is performed by 1 m-2 m, the angle of the drill pipe is checked one time; after reaching a designed depth, the drill pipe and a drilling tool are taken out; fine aggregate concrete or cement mortar is injected into the wall-protecting steel casing pipe; after the concrete or the cement mortar is solidified, the pipe-following drilling micro pile for reinforcing roadbeds of existing high-speed railways is formed. Soil body disturbance of the roadbed can be avoided to the maximum degree, and roadbed additive deformation caused by regulation of project construction is prevented. Construction can be performed under the driving conditions of the existing high-speed railways, and normal operation of existing lines is not affected; the construction method is suitable for performing disease regulation on roadbed deformation occurring on the existing high-speed railways.
Construction method for pipe-following drilling micro pile of slewing drilling machine
The invention discloses a construction method for a pipe-following drilling micro pile of a slewing drilling machine. The drilling machine is installed in place, and the orientations and angles of a drill pipe and a drill bit are adjusted to be uniform with design parameters; after preparation, drilling starts to be performed; a direct cycle method is adopted, and circulating water is utilized for cooling the drill bit and removing slag; a wall-protecting steel casing pipe follows and is pressed synchronously every time drilling is performed by 0.25 m-0.5 m, and the distance between the wall-protecting steel casing pipe and the bottom of a hole is smaller than or equal to 0.5 m; every time drilling is performed by 1 m-2 m, the angle of the drill pipe is checked one time; after reaching a designed depth, the drill pipe and a drilling tool are taken out; fine aggregate concrete or cement mortar is injected into the wall-protecting steel casing pipe; after the concrete or the cement mortar is solidified, the pipe-following drilling micro pile for reinforcing roadbeds of existing high-speed railways is formed. Soil body disturbance of the roadbed can be avoided to the maximum degree, and roadbed additive deformation caused by regulation of project construction is prevented. Construction can be performed under the driving conditions of the existing high-speed railways, and normal operation of existing lines is not affected; the construction method is suitable for performing disease regulation on roadbed deformation occurring on the existing high-speed railways.
Construction method for pipe-following drilling micro pile of slewing drilling machine
YANG YANSHUANG (Autor:in) / HUANG CAIPING (Autor:in) / ZHANG FAN (Autor:in) / WAN JUAN (Autor:in)
07.10.2015
Patent
Elektronische Ressource
Englisch
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