一种冻结管注浆用止水带
By using waterstops and gravity components to form an active seal in the annular space between the freezing hole and the formation, the construction problem of frozen wells caused by the seepage of pressurized water was solved, the grouting effect was improved and the accuracy of temperature measurement data was enhanced, thus ensuring the freezing effect of the frozen well.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA COAL SPECIAL DRILLING ENG
- Filing Date
- 2025-09-12
- Publication Date
- 2026-07-17
AI Technical Summary
During the construction of frozen wells, the seepage of pressurized water causes distortion of temperature measurement data and heat loss of the frozen wall, affecting the freezing effect and the difficulty of forming a ring, especially in aquifers where it is difficult to form an effective frozen wall.
A waterstop is used to separate the annular space between the freezing hole and the stratum. Waterstop rings and gravity components are used to prevent pressurized water from entering the grouting space, forming an actively closed annular space. A dual-liquid grouting pump is used for layered dynamic grouting to improve the grouting effect and the accuracy of temperature measurement data.
It effectively prevents pressurized water from entering the annular space, reduces construction difficulty, improves grouting effect, ensures the integrity of the frozen wall and the accuracy of temperature measurement data, and enhances the freezing effect of the frozen well.
Smart Images
Figure CN224515203U_ABST
Abstract
Claims
1. A waterstop tape for frozen pipe grouting, characterized by, include: A water-stop ring (10) is fitted onto the freezing pipe (A); the freezing pipe (A) is arranged in the freezing hole of the stratum (B) to be frozen; The water-stop ring (10) is located in the annular space between the freezing pipe (A) and the stratum to be frozen (B). After the water-stop ring (10) absorbs water and expands, it divides the annular space in the vertical direction, forming a grouting space above the water-stop ring (10) and a water-bearing space below the water-stop ring (10). The water-stop ring (10) is used to prevent pressurized water in the water-bearing space from entering the grouting space.
2. The waterstop tape for frozen pipe grouting according to claim 1, characterized in that, It also includes a gravity element (20); the gravity element (20) is disposed above the water-stop ring (10) and distributed circumferentially along the freezing hole, and is used to prevent the water-stop ring (10) from floating under the pressure of pressurized water.
3. The waterstop tape for frozen pipe grouting according to claim 2, characterized in that, The water-stop ring (10) includes an annular support frame (13), a water-absorbing expansion member (12), and an outer sleeve (11); the annular support frame (13) is fitted onto the freezing tube (A), the outer sleeve (11) is made of a water-permeable elastic material and is wrapped around the outside of the annular support frame (13); the water-absorbing expansion member (12) is made of water-absorbing material and is filled in the space between the outer sleeve (11) and the annular support frame (13).
4. The waterstop tape for frozen pipe grouting according to claim 3, characterized in that, The ring-shaped support frame (13) is made of iron wire.
5. A waterstop for grouting in a freezing pipe according to claim 3, characterized in that, The water-absorbing expansion component (12) is made of water-absorbing resin.
6. The waterstop tape for frozen pipe grouting according to claim 5, wherein The outer cover (11) is an elastic woven bag.
7. The waterstop band for frozen pipe grouting according to claim 4 or 5 or 6, characterized in that, The gravity component (20) is gravel.
8. The waterstop tape for frozen pipe grouting according to claim 5, wherein The grouting fluid (30) in the grouting space is a two-component grout composed of cement and water glass.