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A platform for research: civil engineering, architecture and urbanism
Rock-entering hole forming method of hard bed rock socketed pile small-diameter down-the-hole hammer assisted rotary drilling rig
The invention belongs to the technical field of civil engineering pile foundation engineering, and particularly relates to a rock-entering hole forming method of a hard bed rock socketed pile small-diameter down-the-hole hammer assisted rotary drilling rig. The method comprises the following steps that, S100, a drilled pile position is positioned; S200, a rotary drilling rig is in place, and construction is conducted; S300, when drilling to the bed rock surface, drilling is stopped, a drill rod is lifted, and the rotary drilling rig retreats from the construction pile position; S400, a plurality of down-the-hole pre-drilled holes are formed in the drilled pile; S500, a small-diameter down-the-hole drill sleeve positioning frame is manufactured according to the determined number of the down-the-hole pre-drilled holes and the determined section size of the drilled pile; S600, a small-diameter down-the-hole hammer sleeve positioner is erected on a pile casing; S700, after the down-the-hole hammer sleeve is in place, a wooden wedge is driven into the position between the down-the-hole hammer sleeve and a sleeve plate positioning hole in the drill sleeve positioning frame, a small-diameter down-the-hole hammer is in place, and hole-by-hole pre-drilling is conducted on a bedrock entry section to reach a designed rock entry depth; S800, hole forming is finished; S900, the down-the-hole drill sleeve positioning frame and a down-the-hole drill sleeve are pulled out; and S1000, hole cleaning is conducted on a lower guide pipe.
本发明属于土木工程桩基工程技术领域，具体是一种坚硬基岩嵌岩桩小直径潜孔锤辅助旋挖钻机入岩成孔方法。包括以下步骤。S100～钻孔桩位定位。S200～旋挖钻机就位，施工。S300～当钻进至基岩面时，停止钻进，提升钻杆，旋挖钻机退出施工桩位。S400～在钻孔桩内布置若干个潜孔预钻孔。S500～根据确定的潜孔预钻孔数与钻孔桩截面尺寸制作小直径潜孔钻套管定位架。S600～在护筒上架设小直径潜孔锤套管定位器。S700～潜孔锤套管就位后，在潜孔锤套管与钻套管定位架上的套板定位孔之间打入木制楔形，小直径潜孔锤就位，对基岩入岩段进行逐孔预钻到设计入岩深度。S800～成孔结束。S900～拔出潜孔钻套管定位架和潜孔钻套管。S1000～下导管清孔。
Rock-entering hole forming method of hard bed rock socketed pile small-diameter down-the-hole hammer assisted rotary drilling rig
The invention belongs to the technical field of civil engineering pile foundation engineering, and particularly relates to a rock-entering hole forming method of a hard bed rock socketed pile small-diameter down-the-hole hammer assisted rotary drilling rig. The method comprises the following steps that, S100, a drilled pile position is positioned; S200, a rotary drilling rig is in place, and construction is conducted; S300, when drilling to the bed rock surface, drilling is stopped, a drill rod is lifted, and the rotary drilling rig retreats from the construction pile position; S400, a plurality of down-the-hole pre-drilled holes are formed in the drilled pile; S500, a small-diameter down-the-hole drill sleeve positioning frame is manufactured according to the determined number of the down-the-hole pre-drilled holes and the determined section size of the drilled pile; S600, a small-diameter down-the-hole hammer sleeve positioner is erected on a pile casing; S700, after the down-the-hole hammer sleeve is in place, a wooden wedge is driven into the position between the down-the-hole hammer sleeve and a sleeve plate positioning hole in the drill sleeve positioning frame, a small-diameter down-the-hole hammer is in place, and hole-by-hole pre-drilling is conducted on a bedrock entry section to reach a designed rock entry depth; S800, hole forming is finished; S900, the down-the-hole drill sleeve positioning frame and a down-the-hole drill sleeve are pulled out; and S1000, hole cleaning is conducted on a lower guide pipe.
本发明属于土木工程桩基工程技术领域，具体是一种坚硬基岩嵌岩桩小直径潜孔锤辅助旋挖钻机入岩成孔方法。包括以下步骤。S100～钻孔桩位定位。S200～旋挖钻机就位，施工。S300～当钻进至基岩面时，停止钻进，提升钻杆，旋挖钻机退出施工桩位。S400～在钻孔桩内布置若干个潜孔预钻孔。S500～根据确定的潜孔预钻孔数与钻孔桩截面尺寸制作小直径潜孔钻套管定位架。S600～在护筒上架设小直径潜孔锤套管定位器。S700～潜孔锤套管就位后，在潜孔锤套管与钻套管定位架上的套板定位孔之间打入木制楔形，小直径潜孔锤就位，对基岩入岩段进行逐孔预钻到设计入岩深度。S800～成孔结束。S900～拔出潜孔钻套管定位架和潜孔钻套管。S1000～下导管清孔。
Rock-entering hole forming method of hard bed rock socketed pile small-diameter down-the-hole hammer assisted rotary drilling rig
坚硬基岩嵌岩桩小直径潜孔锤辅助旋挖钻机入岩成孔方法
WANG XUEJUN (author) / SUN YONG (author) / YANG YINWANG (author) / WANG JINCHUN (author) / XU XINCHUN (author) / CHEN YANJUN (author) / AN MING (author) / JIANG HUI (author) / DU YASHENG (author) / LI FENGBO (author)
2021-02-26
Patent
Electronic Resource
Chinese
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