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Hole-forming construction method for cast-in-situ bored pile in hard rock stratum
The invention relates to the field of pile foundation drilling construction under the geological condition of a hard rock stratum and particularly relates to a hole-forming construction method for a cast-in-situ bored pile in the hard rock stratum. The method comprises the following steps of punching a pilot hole; configuring a drilling machine and a drill bit; drilling with a small diameter of phi 1.2 m; and full-diameter drilling of phi 1.8 m being carried out. According to the method, a rotary drilling rig is matched with drill bits with different diameters to form holes in a grading mode, drilling efficiency can be effectively improved, and the method has important significance on construction of pile foundation engineering under the hard rock and vibration control environment.
本发明涉及在岩层较硬地质条件下，桩基础钻孔施工领域，具体涉及一种硬岩地层钻孔灌注桩成孔施工方法。包括打设先导孔；配置钻机、钻头；φ1.2m小直径钻孔；φ1.8m全直径钻孔；清孔等步骤，本发明旋挖钻机配以不同直径钻头分级成孔，会有效提高钻进效率，对硬岩、控制振动环境下桩基工程的施工的具有重要意义。
Hole-forming construction method for cast-in-situ bored pile in hard rock stratum
The invention relates to the field of pile foundation drilling construction under the geological condition of a hard rock stratum and particularly relates to a hole-forming construction method for a cast-in-situ bored pile in the hard rock stratum. The method comprises the following steps of punching a pilot hole; configuring a drilling machine and a drill bit; drilling with a small diameter of phi 1.2 m; and full-diameter drilling of phi 1.8 m being carried out. According to the method, a rotary drilling rig is matched with drill bits with different diameters to form holes in a grading mode, drilling efficiency can be effectively improved, and the method has important significance on construction of pile foundation engineering under the hard rock and vibration control environment.
本发明涉及在岩层较硬地质条件下，桩基础钻孔施工领域，具体涉及一种硬岩地层钻孔灌注桩成孔施工方法。包括打设先导孔；配置钻机、钻头；φ1.2m小直径钻孔；φ1.8m全直径钻孔；清孔等步骤，本发明旋挖钻机配以不同直径钻头分级成孔，会有效提高钻进效率，对硬岩、控制振动环境下桩基工程的施工的具有重要意义。
Hole-forming construction method for cast-in-situ bored pile in hard rock stratum
一种硬岩地层钻孔灌注桩成孔施工方法
ZHAN SHURUI (author) / TIAN ZHUOLUN (author) / PENG JIE (author) / LIU JIANYONG (author) / CHU JINYANG (author) / ZHANG JINYU (author) / BIE XIAOSONG (author) / QIN PENGJU (author)
2022-01-28
Patent
Electronic Resource
Chinese
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