Integrated Drill Shank Injection for Continuous Subsurface Grouting
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Solution Overview
Problem
Existing drilling and injection devices require separate components for drilling and injecting materials into substrates, which can be inconvenient and inefficient in sub-surface operations like tunnelling.
Innovation Solution
An integrated drilling and injection device featuring a longitudinal shank with an internal passage, a drill bit at one end, at least one outlet for fluid communication, and a valve to control material passage, allowing for both drilling and injection without removing the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate drilling and injection devices are used, then each device can be optimized for its specific function, but the overall process requires multiple components and device changes
Solution Approach 1:
The patent combines the drilling function (drill bit) and injection function (outlet with valve) into a single integrated device. The shank contains both the drill bit at its end and an internal passage with outlet and valve, allowing both operations to be performed by one device without requiring separate components or device changes.
Solution Approach 2:
The shank serves multiple functions: it acts as the structural body, contains the drill bit for drilling, provides an internal passage for fluid transport, and includes outlets with valves for controlled injection. This multi-functional design eliminates the need for separate drilling and injection devices.
2Productivity
If separate drilling and injection devices are used, then each device can be independently optimized, but the process requires device removal and replacement
Solution Approach 1:
The integrated device allows continuous operation from drilling to injection without interruption. The drill bit drills the hole and creates the channel, then the same device immediately begins injecting material through its outlets along the same channel, eliminating the time loss associated with removing one device and installing another.
3Adaptability or versatility
If a hollow pipe with holes is used for injection, then material can be placed strategically, but the device cannot drill its own channel
Solution Approach 1:
The device merges the drill bit and the injection system into a single integrated unit. The drill bit is attached to the end of the shank, and the internal passage runs through the shank, allowing the device to both create its own installation channel and perform injection through the same structural body.
Data Source
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AI summary
The present invention provides an integrated drilling and injection device, comprising: a longitudinal shank (7) having an internal passage extending from an open first end of the shank (7) along an axis of the shank (7) toward a second end of the shank; a drill bit (3) located at a second end of the shank (7) opposite the first end; and at least one outlet (9) in fluid communication between the internal passage and an exterior surface of the shank (7). In this way, the device may be driven into a substrate and then fluid may be injected into the substrate by passing along the internal passage and through the at least one outlet (9), without first having to remove the device and replace it with a separate injection component.