Basalt Fiber Anchoring System with Sectioned Grouting
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Solution Overview
Problem
Traditional anchor cable grouting processes in reservoir bank slopes face issues with grout leakage and loss due to fissures and water erosion, compromising the stability and safety of rock mass reinforcement.
Innovation Solution
A basalt fiber anchoring system with accurate sectioned grouting, employing first and second base plates, a grouting device with elastic sheaths and stop sealing plugs, and a tensioning device to ensure precise grouting and prevent grout recharge, while applying prestress to the basalt fiber anchor cables using homologous-material variable-rigidity clips and sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional anchor cable grouting process is used in reservoir bank slope, then the grouting can be performed relatively simply, but grout leakage and loss occur due to fissures and water erosion
Solution Approach 1:
The grouting system is divided into multiple independent grouting sections, each with its own grouting port and elastic sheath. This segmentation allows controlled grouting in specific zones while preventing grout leakage through the entire borehole, addressing the reliability issue without requiring complete system complexity
Solution Approach 2:
Elastic sheaths are introduced as intermediary components between the grouting ports and the grout flow. These sheaths act as controllable valves that open during grouting and close afterward, preventing grout recharge and leakage while maintaining simple overall system structure
2Reliability
If grouting is performed in rock mass with joint fissures, then reinforcement can be achieved, but grout leakage occurs and construction cannot be conducted smoothly
Solution Approach 1:
The grouting process is segmented into discrete sections with controlled ports, allowing grout to be injected in controlled amounts into specific zones even when joint fissures are present. This prevents uncontrolled grout leakage while maintaining reinforcement effectiveness
Solution Approach 2:
The elastic sheaths provide automatic feedback by opening during grouting when pressure builds up and closing when grouting completes. This self-regulating mechanism ensures construction smoothness by preventing grout recharge and leakage without requiring complex external control systems
3Reliability
If basalt fiber reinforced plastic is used instead of steel anchor cable, then corrosion resistance and stability are improved, but grouting problems arise in hydro-fluctuation belt
Solution Approach 1:
The grouting system uses segmented sections with individual base plates and grouting ports for each section. This segmentation allows precise control of grout injection zones, preventing grout leakage that would otherwise compromise the basalt fiber reinforced plastic anchor cable performance
Solution Approach 2:
Elastic sheaths serve as intermediary components that control grout flow in each grouting section. These sheaths open during grouting and close afterward to prevent recharge, enabling reliable grouting with basalt fiber reinforced plastic without requiring overly complex system configurations
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
The system effectively prevents grout seepage and loss by ensuring accurate sectioned grouting and applies uniform stress to the basalt fiber anchor cables, enhancing the stability and safety of rock mass reinforcement.
Implementation Method 1
grouting pressure acts on the elastic sheath via the two grouting sub-ports, the two ends of the elastic sheath curl towards the middle under the action of the grouting pressure
Implementation Method 2
grout is injected into a gap between the valve pipe and the anchoring borehole via the grouting port
Implementation Method 3
the grouting core pipe is sleeved with two grout stop sealing plugs at intervals, the two grout stop sealing plugs make contact with an inner wall of the valve pipe
Data Source
AI summary
A basalt fiber anchoring system with accurate sectioned grouting includes: a plurality of first base plates arranged in an anchoring borehole, where every two first base plates are arranged at an upper end and a lower end of a section to be grouted respectively; a plurality of basalt fiber reinforced plastics (BFRP) penetrating the plurality of first base plates; and a grouting device including a valve pipe and a grouting core pipe, where the valve pipe penetrates all the first base plates, a plurality of grouting ports are defined in a pipe wall of the valve pipe, each of the plurality of grouting ports is covered with an elastic sheath, the grouting core pipe is sleeved with two grout stop sealing plugs at intervals, a plurality of grout outlets are provided between the two grout stop sealing plugs.