Adjustable Tunnel Arch Support for Uniform Force Distribution
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Solution Overview
Problem
Existing tunnel construction methods fail to distribute supporting force evenly, leading to unsatisfactory supporting effects and instability, which complicates construction and maintenance.
Innovation Solution
A tunnel supporting force adjusting device comprising a fixed component, movable supporting component, and driving component, which allows for precise adjustment of supporting force through jacking mechanisms and grouting processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional steel frame supporting is used in tunnel construction, then the supporting structure is simple to install, but the supporting force is not distributed evenly, leading to unsatisfactory supporting effect and structural instability
Solution Approach 1:
The supporting device is segmented into multiple independent adjustable supporting components (4 components in this case), each capable of independent force adjustment. This segmentation allows each component to independently apply optimized supporting force to different positions of the tunnel arch, achieving even force distribution and improving overall supporting reliability without requiring complex integrated systems.
Solution Approach 2:
The supporting device incorporates adjustable supporting components with driving mechanisms that enable dynamic adjustment of supporting force magnitude. This dynamic capability allows the supporting system to adapt to varying rock pressure conditions and achieve optimal force distribution, transforming the static traditional steel frame into a dynamic, responsive supporting system that improves reliability.
2Reliability
If adjustable supporting components are added to achieve even force distribution, then the supporting effect is improved, but the device complexity and installation difficulty increase
Solution Approach 1:
The adjustable supporting components are pre-assembled as complete units before installation in the tunnel. Each component includes the driving mechanism, transmission components, and supporting structure already integrated and tested. This preliminary assembly simplifies on-site installation, as workers only need to install complete modules rather than assemble complex mechanisms during tunnel construction, thereby improving ease of operation while maintaining the adjustable force distribution capability.
3Stability of the object's composition
If multiple adjustable supporting components are used to optimize supporting force at each position, then the supporting stability is improved, but the construction time and maintenance complexity increase
Solution Approach 1:
The supporting system is divided into multiple independent adjustable components that can be installed and adjusted separately at different tunnel positions. This segmentation enables parallel installation activities, where different components can be installed simultaneously by different work teams, thereby maintaining construction productivity while achieving stable and evenly distributed supporting force throughout the tunnel arch structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables uniform and stable support distribution, enhancing the structural integrity and facilitating efficient construction and maintenance by optimizing supporting force at each arch section.
Implementation Method 1
Internal force transmission parts, slidably connected with the casing pipes; A top plate, connected with the internal force transmission parts and used for connecting with the tunnel trunk and applying a supporting force on the tunnel trunk
Implementation Method 2
the movable supporting component, the fixed component and the section steel are fixedly connected with the tunnel trunk by pouring
Data Source
AI summary
A tunnel supporting force adjusting device, comprising a fixed component, a movable supporting component and a driving component, wherein the fixed component is connected with section steel; the movable supporting component is connected with the fixed component and used for connecting with a tunnel trunk, and the movable supporting component, the fixed component and the section steel are fixedly connected with the tunnel trunk by pouring; and the driving component is detachably connected with the fixed component and the movable supporting component respectively to adjust the supporting force of the movable supporting component on the tunnel trunk. The present invention also discloses a tunnel supporting force adjusting method, in which adjusting devices are arranged in different positions of the section steel of the arch section of a tunnel to achieve fixed-point adjustment of the force in each position so as to form optimum supporting force and supporting effect.