Deviation rectification method for rotary drilling rig during pore forming when encountering inclined rock stratum

The invention belongs to the technical field of building construction, and particularly relates to a deviation rectification method for a rotary drilling rig during pore forming when encountering an inclined rock stratum. The deviation rectification method is characterized by comprising the steps of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHOU QISHENG, LI JIRONG, CUI YUHUA, ZHANG FANG, WEI DONGYONG, ZHANG FENGBING
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention belongs to the technical field of building construction, and particularly relates to a deviation rectification method for a rotary drilling rig during pore forming when encountering an inclined rock stratum. The deviation rectification method is characterized by comprising the steps of 1, rotary drilling into the inclined rock stratum by adopting a drill bit matched with the designedpile pore according to the designed position; 2, carrying out pore expanding; 3, removing the drill bit in the step 2; 4, pouring concrete C25 into the preliminary pipe pore, wherein the pouring depth is not less than 200mm; and 5, carrying out pore forming by using a drill bit matched with the diameter of the designed pile pore when the concrete is poured for 24 hours. In the deviation rectification method, the concrete filling layer is uniform in material and has certain strength, and the drill bit is restricted by the concrete filing layer and does not deviate when drilling downwards and encountering the inclined