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A platform for research: civil engineering, architecture and urbanism
Construction method and device for pile foundation engineering to penetrate through closed karst cave layer
The invention discloses a construction method for a pile foundation project to pass through a closed karst cave layer, which is characterized in that a grouting hole is formed in a position 2-3m away from the top of a karst cave, so that the karst cave is filled with slurry, support is provided for the karst cave, hole collapse is avoided in a pile foundation drilling process, and the construction time of a karst cave filling procedure is saved; the filling of the large karst cave or the small karst cave can be adapted, the slurry filling cost is lower than that of other filling materials, it can be judged that the slurry is filled with the slurry according to the fact that the exhaust pressure value becomes zero, meanwhile, the sealing isolation piece covering the section of the karst cave is arranged in the pile foundation hole, the karst cave is completely isolated, and the method has the advantages of being simple and clear in principle and high in practicability. And an operator can easily understand. The invention further discloses a device for the pile foundation project to penetrate through the closed karst cave layer.
本发明公开了一种桩基工程穿越封闭式溶洞层的施工方法，通过在距离溶洞顶2‑3m处开设注浆孔，使泥浆填充满溶洞，为溶洞提供支撑，保证桩基钻进过程中不发生塌孔，节约溶洞填充工序施工时间，且泥浆为流体态，大溶洞或小溶洞的填充均能适应，泥浆填充相比其他填充材料填充成本更低，可依据排气压力值变为零判断泥浆已将泥浆填充满，同时，通过在桩基孔内设置覆盖溶洞断面的密封隔离件，实现完全隔断溶洞，具有原理简单清晰，作业人员易理解的特点。本发明还公开了一种桩基工程穿越封闭式溶洞层的装置。
Construction method and device for pile foundation engineering to penetrate through closed karst cave layer
The invention discloses a construction method for a pile foundation project to pass through a closed karst cave layer, which is characterized in that a grouting hole is formed in a position 2-3m away from the top of a karst cave, so that the karst cave is filled with slurry, support is provided for the karst cave, hole collapse is avoided in a pile foundation drilling process, and the construction time of a karst cave filling procedure is saved; the filling of the large karst cave or the small karst cave can be adapted, the slurry filling cost is lower than that of other filling materials, it can be judged that the slurry is filled with the slurry according to the fact that the exhaust pressure value becomes zero, meanwhile, the sealing isolation piece covering the section of the karst cave is arranged in the pile foundation hole, the karst cave is completely isolated, and the method has the advantages of being simple and clear in principle and high in practicability. And an operator can easily understand. The invention further discloses a device for the pile foundation project to penetrate through the closed karst cave layer.
本发明公开了一种桩基工程穿越封闭式溶洞层的施工方法，通过在距离溶洞顶2‑3m处开设注浆孔，使泥浆填充满溶洞，为溶洞提供支撑，保证桩基钻进过程中不发生塌孔，节约溶洞填充工序施工时间，且泥浆为流体态，大溶洞或小溶洞的填充均能适应，泥浆填充相比其他填充材料填充成本更低，可依据排气压力值变为零判断泥浆已将泥浆填充满，同时，通过在桩基孔内设置覆盖溶洞断面的密封隔离件，实现完全隔断溶洞，具有原理简单清晰，作业人员易理解的特点。本发明还公开了一种桩基工程穿越封闭式溶洞层的装置。
Construction method and device for pile foundation engineering to penetrate through closed karst cave layer
一种桩基工程穿越封闭式溶洞层的施工方法及装置
WANG XIONG (author) / LUO WENLONG (author) / LI YOUMING (author) / CAI QINHAO (author) / GAO RUOCHEN (author) / CHEN JINGUO (author) / LIU YUBAO (author) / CHEN LIANG (author) / ZHAO XIGUANG (author) / LIN XIANG (author)
2022-11-01
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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