A sinking well construction device and method for soft soil layer

By introducing an annular raft, grouting mechanism, and robotic arm assembly into the caisson construction device, combined with a vertical correction mechanism and attitude sensor, the problem of caisson displacement in soft soil strata was solved, achieving efficient soil extraction and rapid stratum reinforcement.

CN122406790APending Publication Date: 2026-07-17CHINA NUCLEAR IND HUAXING CONSTR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NUCLEAR IND HUAXING CONSTR
Filing Date
2026-03-31
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing caisson construction equipment is prone to causing caisson displacement when excavating soil in soft soil strata, and the excavation bucket has low working efficiency.

Method used

The system employs a ring raft, grouting mechanism, vertical correction mechanism, ring frame, and robotic arm assembly. The grouting mechanism pre-reinforces the soil, the robotic arm assembly and suction pipe are used for continuous soil extraction, and the vertical correction mechanism corrects the caisson's posture. The posture sensor is used for real-time monitoring and adjustment.

Benefits of technology

It improves soil extraction efficiency in soft soil strata, avoids the risk of caisson displacement, and quickly completes strata reinforcement after sinking.

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Abstract

本发明公开了一种软土地层用沉井施工装置及方法，包括环形的筏板、灌浆机构、垂直矫正机构、环形架和机械臂组件，筏板上环绕分布有贯通至筏板下方的灌浆机构，灌浆机构用于向土体注浆，筏板上还等角度环绕分布有数组可竖向伸缩调节的垂直矫正机构，数组垂直矫正机构的顶部共同连接用于贴合设置在沉井上端面的环板，环板上端设有同轴的环形架，机械臂组件的固定端滑动设置在环形架上，机械臂组件的活动端用于自环形架中间伸入沉井内部并连接有抽吸管的一端，抽吸管的另一端外接负压设备。本发明可由机械臂组件和抽吸管沿环形架运动，以进行井内的多范围持续性取土；通过垂直矫正机构对井体的姿态进行矫正和约束。
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