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Combined multi-channel large-diameter mixing pile construction device and method
The invention relates to the field of foundation pit supporting, in particular to a combined multi-channel large-diameter mixing pile construction device and method. Comprising a drill rod, a high-pressure gas channel and a high-pressure slurry channel, a high-pressure gas cavity is formed in the bottom in the drill rod, a slurry-gas combined outlet penetrating to the outer wall of the drill rod is formed in the inner wall of the high-pressure gas cavity, and a drill bit is installed at the bottom outside the drill rod. One end of the high-pressure gas channel extends to the top end of the drill rod, and the other end of the high-pressure gas channel communicates with the high-pressure gas cavity. Comprising a high-pressure grout main channel and two high-pressure grout branch channels, one end of the high-pressure grout main channel extends to the top end of the drill rod, the other end of the high-pressure grout main channel is connected with one ends of the two high-pressure grout branch channels, and the other ends of the two high-pressure grout branch channels are communicated with the two high-pressure gas cavities respectively. Under the influence of the high-pressure gas, the slurry can form a high-pressure gas blade to cut a sand layer while being sprayed out along with the high-pressure gas, and the situation that the flowing sand layer is accumulated on the periphery of a drill bit and a drill rod to generate large resistance, and consequently the construction process of a stirring pile is influenced is avoided.
本发明涉及基坑支护领域，特别是涉及一种组合式多通道大直径搅拌桩施工装置及方法。包括钻杆、高压气体通道和高压浆液通道；钻杆内底部设置有高压气体腔室，高压气体腔室内壁开设有贯通至钻杆外壁的浆气组合出口，钻杆外底部安装有钻头；高压气体通道一端延伸至钻杆顶端，高压气体通道另一端连通至高压气体腔室；包括高压浆液主道和两个高压浆液支道，高压浆液主道一端延伸至钻杆顶端，高压浆液主道另一端连接两个高压浆液支道一端，两个高压浆液支道另一端分别连通至两个高压气体腔室。受高压气体影响，浆液在随高压气体喷出的同时会形成高压气体刀片对砂层进行切割，阻断流动砂层在钻头钻杆周边堆积产生较大阻力从而影响到搅拌桩施工过程。
Combined multi-channel large-diameter mixing pile construction device and method
The invention relates to the field of foundation pit supporting, in particular to a combined multi-channel large-diameter mixing pile construction device and method. Comprising a drill rod, a high-pressure gas channel and a high-pressure slurry channel, a high-pressure gas cavity is formed in the bottom in the drill rod, a slurry-gas combined outlet penetrating to the outer wall of the drill rod is formed in the inner wall of the high-pressure gas cavity, and a drill bit is installed at the bottom outside the drill rod. One end of the high-pressure gas channel extends to the top end of the drill rod, and the other end of the high-pressure gas channel communicates with the high-pressure gas cavity. Comprising a high-pressure grout main channel and two high-pressure grout branch channels, one end of the high-pressure grout main channel extends to the top end of the drill rod, the other end of the high-pressure grout main channel is connected with one ends of the two high-pressure grout branch channels, and the other ends of the two high-pressure grout branch channels are communicated with the two high-pressure gas cavities respectively. Under the influence of the high-pressure gas, the slurry can form a high-pressure gas blade to cut a sand layer while being sprayed out along with the high-pressure gas, and the situation that the flowing sand layer is accumulated on the periphery of a drill bit and a drill rod to generate large resistance, and consequently the construction process of a stirring pile is influenced is avoided.
本发明涉及基坑支护领域，特别是涉及一种组合式多通道大直径搅拌桩施工装置及方法。包括钻杆、高压气体通道和高压浆液通道；钻杆内底部设置有高压气体腔室，高压气体腔室内壁开设有贯通至钻杆外壁的浆气组合出口，钻杆外底部安装有钻头；高压气体通道一端延伸至钻杆顶端，高压气体通道另一端连通至高压气体腔室；包括高压浆液主道和两个高压浆液支道，高压浆液主道一端延伸至钻杆顶端，高压浆液主道另一端连接两个高压浆液支道一端，两个高压浆液支道另一端分别连通至两个高压气体腔室。受高压气体影响，浆液在随高压气体喷出的同时会形成高压气体刀片对砂层进行切割，阻断流动砂层在钻头钻杆周边堆积产生较大阻力从而影响到搅拌桩施工过程。
Combined multi-channel large-diameter mixing pile construction device and method
一种组合式多通道大直径搅拌桩施工装置及方法
MA KANG (author) / YANG RUNZAN (author) / DONG XIAOHUI (author) / CHEN YING (author) / LIU XIWEI (author) / CHAO ZHENHAO (author)
2024-11-22
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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