一种双液定向注浆装置
By designing a dual-liquid directional grouting device, and utilizing the combination of pneumatic sealing grout stop plugs and grouting perforated pipes, precise directional grouting of the fracture zone is achieved, solving the problem that existing devices cannot accurately control the grouting range, and improving grouting efficiency and reinforcement effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MCC CHENGDU RES INST CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing grouting devices cannot achieve precise directional grouting when dealing with fractured strata, resulting in uncontrollable grout diffusion and poor reinforcement effect, which makes it difficult to meet construction requirements.
A dual-liquid directional grouting device is adopted, which combines drill rod, grouting perforation pipe, grout stop plug and air pressure pipe. The air pressure is provided by air pressure pump to expand and seal the grout stop plug, which defines the grouting area, and directional grouting is achieved through the grouting hole of the grouting perforation pipe.
It achieves precise sealing and directional release of the grouting area, improving grouting efficiency and reinforcement effect, and is suitable for engineering scenarios such as reinforcement of fractured rock areas and sealing of tunnel leakage.
Smart Images
Figure CN224514224U_ABST
Abstract
Claims
1. A two-liquid directional grouting device, characterized by, It includes a drill rod (1), a grouting pipe (3), a grout stop plug (4), a grouting pipe (5), a pneumatic pipe (2), a drilling rig (6), and a pneumatic pump (7); one end of the drill rod (1) is connected to the drilling rig (6), and the other end is inserted into the borehole; The grouting pipe (3) is located at the end of the drill rod (1); the grouting pipe (5) passes through the hollow cavity of the drill rod (1) and extends into the grouting pipe (3) for conveying grouting fluid to the grouting pipe (3); the grout stop plug (4) is located on the outer periphery of the upper and lower ends of the grouting pipe (3) and is connected to the air pressure pump (7) through the air pressure pipe (2); the air pressure pump (7) is used to provide air pressure to the grout stop plug (4) so that it expands and fits against the borehole wall, thereby limiting the grouting area to the position of the broken zone (9) between the two ends of the grouting pipe (3) to achieve directional grouting.
2. The dual-liquid directional grouting device according to claim 1, characterized in that, The grouting pipe (3) and the drill rod (1) are fixed by threaded connection.
3. The dual-liquid directional grouting device according to claim 1, characterized in that, The grout stop plug (4) is made of elastic rubber or expandable material and has sealing performance that expands with air pressure.
4. The dual-liquid directional grouting device according to claim 1, characterized in that, The grouting pipe (3) has multiple evenly distributed grouting holes on its pipe wall for releasing grouting liquid in a closed space.
5. The dual liquid directional grouting device of claim 1, wherein, The drill rod (1) has a hollow structure and is used to accommodate the grouting pipe (5).
6. The dual liquid directional injection device of claim 1, wherein, The air pressure pipe (2) is arranged along the outer wall of the drill rod (1) or passes through the internal cavity of the drill rod (1).
7. The dual liquid directional injection device of claim 1, wherein, The drilling rig (6) is a hydraulic or electric drive structure used to control the rotation and propulsion of the drill rod (1).