Injectable Sealing Composition Assembly for Rock Anchor Bolts
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Solution Overview
Problem
Current devices for anchoring bolts in rock structures lack the ability to immediately adapt the properties of the sealing composition to specific geological conditions and anchoring needs, limiting flexibility and effectiveness in diverse geological settings.
Innovation Solution
An assembly for preparing an injectable sealing composition that includes separate storage means for a silicate resin-based component, a diphenylmethane diisocyanate (MDI) component, and an organic or mineral filler, with devices to generate mixtures that allow on-site adjustment of component proportions and properties, ensuring optimal adaptation to the specific anchoring operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed composition sealing material is used, then the anchoring operation can be performed with simple equipment, but the properties of the sealing composition cannot be adapted to specific geological conditions and anchoring needs
Solution Approach 1:
The sealing composition is divided into separate components (silicate resin, MDI, filler, water) stored in individual containers. Each component can be independently controlled and mixed in varying proportions to adapt to different geological conditions, while the mixing device remains relatively simple in structure.
Solution Approach 2:
The mixing device incorporates adjustable parameters including variable mixing ratios of components, controllable mixing time, and adjustable injection pressure. This dynamic control allows the sealing composition properties to be adapted in real-time to match specific anchoring requirements without complex equipment changes.
2Reliability
If multiple components are mixed on-site to create customized sealing composition, then the properties can be optimized for specific conditions, but the preparation time and process complexity increase
Solution Approach 1:
The individual components (silicate resin, MDI, filler, water) are pre-prepared and stored in ready-to-use containers before the anchoring operation. This preliminary preparation eliminates the need for complex on-site formulation, allowing rapid mixing and injection when needed, thus reducing overall preparation time while maintaining composition optimization.
Solution Approach 2:
The mixing process is designed to be rapid, with components combined quickly in the mixing device and immediately injected into the borehole. This rushed-through approach minimizes the time the composition spends in the mixing device, preventing premature setting while ensuring the customized composition is delivered efficiently to the anchoring site.
3Adaptability or versatility
If the sealing composition is prepared in advance and stored, then the equipment remains simple, but the composition properties cannot be immediately adapted to changing geological conditions
Solution Approach 1:
By segmenting the sealing composition into separate storable components, the system maintains equipment simplicity while enabling real-time adaptability. Each component can be stored independently and mixed in varying proportions based on actual geological conditions encountered during the anchoring operation.
4Adaptability or versatility
If a simple fixed-ratio mixing device is used, then the equipment is easy to operate, but the composition properties cannot be adjusted to meet specific anchoring constraints
Solution Approach 1:
The mixing device incorporates dynamic control capabilities including adjustable mixing ratios of components, variable mixing time, and controllable injection pressure. These adjustable parameters allow operators to adapt composition properties to specific anchoring constraints while maintaining relatively simple operation through straightforward controls.
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 the production of a sealing composition with tailored properties such as setting time and gelling characteristics, optimizing the anchoring process by allowing real-time adjustment to meet the specific constraints of the rock structure and operation conditions, enhancing the stability and safety of tunnel reinforcement.
Implementation Method 1
at least one storage means 2 for at least one first component, called silicate component, comprising at least one silicate resin-based liquid component, a storage means 3 for a second component called MDI component comprising at least one liquid component based on diphenylmethane diisocyanate
Data Source
AI summary
The present invention relates to an assembly (1) for preparing an injectable sealing composition for scaling an anchor bolt in a dedicated recess of a rock structure, characterised in that the assembly comprises: —at least one storage means (2) for storing at least one first component, referred to as the resin-based silicate component, —a storage means (3) for storing a second component, referred to as the diphenylmethane diisocyanate-based MDI component, —a storage means (4) for storing an organic or mineral filler, —a device for generating a first mixture (5) configured to produce a mixture combining at least an amount of the MDI component with at least an amount of filler, —a device for generating a second mixture (6) configured to produce a mixture combining at least an amount of the first mixture with at least an amount of the silicate component.