一种冻土区防雪通风管道路基结构
By introducing protective plates and non-powered wind caps into the snow-proof ventilation ducts in permafrost regions, the problem of rainwater entering under heavy rain and snowmelt conditions is solved, ensuring the continuity of the ventilation and cooling effect, preventing permafrost degradation, and improving the stability of the structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA COMMUNICATIONS CONSTRUCTION
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing snow protection and ventilation ducts in permafrost regions are prone to rainwater or snowmelt entering the ducts under heavy rain and snowmelt conditions, causing the wind caps to fail, affecting the ventilation and cooling effect, and failing to effectively prevent permafrost degradation.
A roadbed structure for snow-proof ventilation ducts in permafrost regions was designed, employing a fixing mechanism, a connecting mechanism, and a protective mechanism, including a protective plate and a non-powered wind cap. The protective plate has an inclination angle of ≥55°, forming an "eaves effect" to block rainwater and snowmelt, and deflect horizontally blown raindrops, thereby improving the protective effect.
It effectively prevents rain and snow from entering the pipes, ensures the continuity of ventilation and cooling effects, reduces the risk of permafrost degradation, and improves the stability and protective capabilities of the structure.
Smart Images
Figure CN224513970U_ABST
Abstract
Claims
1. A snow-melted permafrost zone snow-melted ventilation pipe road base structure, characterized by, It includes a roadbed (1) and a ventilation pipe (2). The two ends of the ventilation pipe (2) are respectively connected to an air inlet pipe (3) and an air outlet pipe (5). The end of the air inlet pipe (3) away from the ventilation pipe (2) is provided with a louver (4). The end of the air outlet pipe (5) away from the ventilation pipe (2) is provided with a non-powered wind cap (6). The outer sides of the air inlet pipe (3) and the air outlet pipe (5) are both provided with a fixing mechanism (7). The top of the fixing mechanism (7) is provided with a connecting mechanism (8). The top of the connecting mechanism (8) is provided with a protective mechanism (9).
2. The permafrost zone snow-mitigation vent pipe road foundation structure according to claim 1, wherein, The fixing mechanism (7) includes a first fixing clamp (701) and a second fixing clamp (702). The first fixing clamp (701) and the second fixing clamp (702) are provided on the outer side of the air inlet pipe (3) and the air outlet pipe (5). L-shaped support rods (703) are fixedly connected to the outer side of the first fixing clamp (701) and the second fixing clamp (702). Fixing blocks (704) are fixedly connected to both sides of the first fixing clamp (701) and the second fixing clamp (702). Fixing bolts (705) are provided in the inner cavity of the fixing blocks (704). Fixing nuts (706) are threadedly connected to the outer side of the fixing bolts (705).
3. The permafrost zone snow-mitigation vent pipe roadbed structure according to claim 2, characterized in that, The connecting mechanism (8) includes a connecting block (801), which is fixedly connected to the top of the L-shaped support rod (703). A connecting seat (802) is slidably connected to the outside of the connecting block (801). A spring (803) is welded to the inner cavity of the connecting block (801). A locking block (804) is welded to one end of the spring (803). A limiting block (805) is fixedly connected to the outside of the locking block (804). The outside of the limiting block (805) is slidably connected to the inner cavity of the connecting block (801).
4. The permafrost zone snow-mitigation vent pipe road foundation structure according to claim 3, wherein, The connecting mechanism (8) further includes a stabilizing rod (806), one end of which is fixedly connected to the inner cavity of the connecting block (801), and the inner cavity of the locking block (804) is provided with a stabilizing groove (807), and the outer side of the stabilizing rod (806) is slidably connected to the inner wall of the stabilizing groove (807).
5. The permafrost zone snow-mitigation vent pipe road foundation structure according to claim 3, wherein, Guide blocks (10) are fixedly connected to both sides of the connecting block (801), and the outer side of the guide block (10) is slidably connected to the inner wall of the connecting seat (802).
6. The permafrost zone snow-mitigation vent pipe road foundation structure of claim 1, wherein, The protective mechanism (9) includes a support plate (901), which is located above the connecting mechanism (8). A reinforcing plate (902) is fixedly connected to the top of the support plate (901), and a protective plate (903) is fixedly connected to the top of the reinforcing plate (902). The bottom of the protective plate (903) is fixedly connected to the top of the support plate (901).