Rock Reinforcement Apparatus Blocking Agent Injection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing rock reinforcement methods, such as those described in WO2012171056, face reliability issues due to residual resin components in the valve manifold, which can impair the apparatus's performance when flushing fluids are injected, leading to potential blockages and interruptions during the rock reinforcement process.

Innovation Solution

A method and apparatus that inject a blocking agent through a third channel to replace and separate the second component, preventing contact with moisture and other components, thereby reducing the risk of blockages and improving the reliability of the rock reinforcement process by ensuring the second channel is protected from coatings and crystallization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a valve manifold with shuttle valves is used for injection of resin components, then the rock reinforcement process can be performed, but residual resin components remain inside the inlets which impairs reliability of service

Engineering Contradiction:

Improvereliability of serviceVSAvoidresidual resin components

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent extracts and removes residual resin components from the valve manifold inlets by introducing a blocking agent that displaces and extrudes the remaining resin components from the channels, preventing them from causing future blockages or impairments

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The blocking agent acts as an intermediary substance that is injected into the second channel to create a barrier, preventing contact between the second component and moisture or first component, thereby protecting the channel from coating formation

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If the second channel is left open for injection of second component, then injection can be performed, but the second component may contact moisture or first component causing coatings that block the channel

Engineering Contradiction:

Improveinjection efficiencyVSAvoidcoatings in channel

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The blocking agent is injected into the second channel in advance to create a protective barrier before the second component is injected, preventing potential harmful contacts and coating formation that would occur during subsequent injection operations

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The blocking agent serves as a protective intermediary layer within the second channel, separating the second component from moisture and first component, thereby preventing chemical reactions that would create blocking coatings

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS10513926B2Method and apparatus for rock reinforcement

Publication Date: 2019.12.24 EPIROC ROCK DRILLS AB

AI summary

A method and an apparatus for rock reinforcement are described. The method comprises the steps: to inject a first component and a second component through a first channel and a second channel respectively into a rock hole, wherein the first component and the second component are adapted for rock reinforcement and to inject a blocking agent through a third channel into at least said second channel, wherein said blocking agent provides a barrier in at least said second channel.