一种预埋防渗注浆结构
By pre-embedding steel pipes and connecting shafts inside the concrete dam, and using spiral blades and one-way valves to inject concrete grout into the cracks, the problem of water seepage in the concrete dam was solved, the difficulty and cost of repair were reduced, and the stability of the dam body was ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNMING JUNLONG GEOTECHN ENG
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-17
AI Technical Summary
Cracks that appear in concrete dams during use can lead to water seepage problems. Existing post-treatment measures increase construction difficulty and cost, and may also damage the dam structure.
Design a pre-embedded seepage prevention grouting structure, including setting a steel pipe and a connecting shaft inside a concrete dam. The steel pipe has a grout outlet and a one-way valve on the outside. The connecting shaft drives the spiral blade to rotate, pushing the concrete grout into the crack. The stability of the component is ensured by positioning bolts and limit frames.
It effectively reduces the difficulty and cost of repairing cracks in concrete dams, avoids damage to the dam body, and improves repair efficiency and safety.
Smart Images
Figure CN224514152U_ABST
Abstract
Claims
1. A pre-embedded seepage-proof grouting structure, comprising a concrete dam (1), a steel pipe (2), and a connecting shaft (6), characterized in that: Multiple sets of slurry outlet holes (3) are opened through the outer side of the steel pipe (2). Each set of slurry outlet holes (3) is equipped with a one-way valve (4). The connecting shaft (6) is movably disposed inside the steel pipe (2). A connecting cylinder (7) is disposed on the outer side of the connecting shaft (6). A spiral blade (8) is disposed on the outer side of the connecting cylinder (7), and the spiral blade (8) is located inside the steel pipe (2).
2. The pre-embedded anti-infiltration grouting structure according to claim 1, characterized in that: The three sets of steel pipes (2) are set inside the concrete dam (1). A first limiting frame (5) is set inside the steel pipe (2). The connecting shaft (6) moves through the bottom end of the first limiting frame (5). The connecting cylinder (7) contacts the top end of the first limiting frame (5).
3. The pre-embedded anti-infiltration grouting structure according to claim 1, characterized in that: The internal thread of the connecting cylinder (7) is provided with a positioning bolt (9), and the positioning bolt (9) is threaded into the interior of the connecting shaft (6).
4. The pre-embedded anti-infiltration grouting structure according to claim 1, characterized in that: The inner wall of the steel pipe (2) is provided with a blocking ring (10), and a second limiting frame (11) is engaged inside the blocking ring (10). The second limiting frame (11) is located above the first limiting frame (5), and the connecting cylinder (7) moves through the interior of the second limiting frame (11).
5. The pre-embedded seepage-proof grouting structure according to claim 1, characterized in that: A toothed ring (12) is provided on the outer side of the connecting shaft (6), and a conical cylinder (13) is movably provided on the outer side of the connecting shaft (6), and the conical cylinder (13) is movably located outside the toothed ring (12).
6. The pre-embedded anti-infiltration grouting structure according to claim 4, characterized in that: The top of the blocking ring (10) is provided with a cover plate (14), and the cover plate (14) is located inside the steel pipe (2). The top of the cover plate (14) is provided with two sets of handles (16). The inside of the cover plate (14) is provided with a through hole (15), and the connecting shaft (6) moves through the inside of the through hole (15).