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Deepwater pile foundation steel casing construction method suitable for bare rock geological conditions
The invention discloses a deepwater pile foundation steel casing construction method suitable for bare rock geological conditions. The method comprises the steps that a construction trestle and a drilling platform are erected; a riverbed foundation is explored and flattened; an outer sleeve water blocking steel casing is lowered and positioned; a rotary drilling rig is matched with a cutter barreldrill bit to conduct grooving on bed rock; a construction casing is embedded into an annular groove position; yellow clay or underwater concrete is lowered through a guide pipe to fill a gap betweenthe construction casing and the bare rock groove position; the outer sleeve steel casing is pulled out; the outer sleeve steel casing and the equipment are moved to the next hole site, and casing construction of other hole sites is completed in a circulating mode in sequence. According to the construction method, pile foundation steel casing construction under the difficult construction conditionsof bare rock, deep water and the like can be rapidly completed, the pile foundation construction casing can accurately extend into the stable bed rock, the pile foundation construction quality is effectively guaranteed, the construction process is safe and reliable, the construction period is short, and economic benefits are good.
一种适用于裸岩地质条件下深水桩基钢护筒施工方法是：其方法步骤为：搭设施工栈桥和钻孔平台→探查平整河床基→下放定位外套阻水钢护筒→旋挖钻机配牙轮筒钻头对基岩切槽→施工护筒嵌入环形槽位→用导管下放黄黏土或水下混凝土封填施工护筒与裸岩槽位的空隙→拔出外套护筒，外套护筒及设备移至下个孔位，依次循环完成其他孔位护筒施工；该施工方能快速完成裸岩、深水等困难施工条件下的桩基钢护筒施工，且桩基施工护筒能准确的伸入稳定基岩，有效的就保障了桩基施工质量，施工过程中安全可靠，施工期短，经济效益好。
Deepwater pile foundation steel casing construction method suitable for bare rock geological conditions
The invention discloses a deepwater pile foundation steel casing construction method suitable for bare rock geological conditions. The method comprises the steps that a construction trestle and a drilling platform are erected; a riverbed foundation is explored and flattened; an outer sleeve water blocking steel casing is lowered and positioned; a rotary drilling rig is matched with a cutter barreldrill bit to conduct grooving on bed rock; a construction casing is embedded into an annular groove position; yellow clay or underwater concrete is lowered through a guide pipe to fill a gap betweenthe construction casing and the bare rock groove position; the outer sleeve steel casing is pulled out; the outer sleeve steel casing and the equipment are moved to the next hole site, and casing construction of other hole sites is completed in a circulating mode in sequence. According to the construction method, pile foundation steel casing construction under the difficult construction conditionsof bare rock, deep water and the like can be rapidly completed, the pile foundation construction casing can accurately extend into the stable bed rock, the pile foundation construction quality is effectively guaranteed, the construction process is safe and reliable, the construction period is short, and economic benefits are good.
一种适用于裸岩地质条件下深水桩基钢护筒施工方法是：其方法步骤为：搭设施工栈桥和钻孔平台→探查平整河床基→下放定位外套阻水钢护筒→旋挖钻机配牙轮筒钻头对基岩切槽→施工护筒嵌入环形槽位→用导管下放黄黏土或水下混凝土封填施工护筒与裸岩槽位的空隙→拔出外套护筒，外套护筒及设备移至下个孔位，依次循环完成其他孔位护筒施工；该施工方能快速完成裸岩、深水等困难施工条件下的桩基钢护筒施工，且桩基施工护筒能准确的伸入稳定基岩，有效的就保障了桩基施工质量，施工过程中安全可靠，施工期短，经济效益好。
Deepwater pile foundation steel casing construction method suitable for bare rock geological conditions
一种适用于裸岩地质条件下深水桩基钢护筒施工方法
WANG ZHENGWU (author) / WANG LIAOYUAN (author) / PENG HAO (author) / YANG SHANG (author) / SONG LEI (author) / KE JUN (author) / QIAO QINGBO (author) / LI XINGYONG (author)
2020-12-04
Patent
Electronic Resource
Chinese
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