Travelling Tunnel Hard-Rock Micro-Damage Cutting Equipment
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Solution Overview
Problem
Traditional blasting methods for excavating hard-rock tunnels in China are inefficient, pose safety risks, and result in environmental pollution, with limited research on mechanized tunnel hard-rock micro-damage cutting equipment leading to reduced rock utilization and increased project costs.
Innovation Solution
A travelling-type tunnel hard-rock micro-damage cutting equipment comprising a crawler-type trolley with integrated hard-rock drilling and cutting apparatuses, a self-unloading tipping bucket, and a visual operation terminal, allowing for precise drilling and cutting with adjustable power arms and vibration-absorbing features, enabling efficient and safe rock extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional blasting method is used for excavation, then excavation speed can be improved, but rock integrity deteriorates and environmental pollution increases
Solution Approach 1:
The blasting process is segmented into multiple controlled stages: first using small diameter holes with low charge for pre-fracturing, then progressing to larger holes with higher charges. This segmentation allows the rock to break in a controlled manner rather than being violently shattered, reducing dust and maintaining rock integrity while achieving excavation goals
Solution Approach 2:
The patent changes key parameters of the blasting process including hole diameter (from small to large progressively), charge quantity (controlled and progressive), and timing sequences. These parameter changes enable the rock to fracture along planned joints rather than being crushed, maintaining integrity while achieving excavation speed
2Reliability
If drilling and blasting equipment is removed before blasting, then construction safety is improved, but construction efficiency deteriorates
Solution Approach 1:
All drilling and blasting equipment is removed before the blasting operation is initiated. This preliminary action ensures that no equipment remains in the excavation area that could be damaged or pose a safety hazard during blasting, while the excavation process continues efficiently without delays for equipment removal
Solution Approach 2:
The patent skips the step of keeping equipment in place during blasting by removing all drilling and blasting equipment before the operation. This eliminates the need to protect or relocate equipment during blasting, improving safety while maintaining efficiency through continuous operation
3Productivity
If blasting is used in poor geological conditions, then excavation can proceed, but engineering accidents increase
Solution Approach 1:
Before blasting in poor geological conditions, the patent performs preliminary actions including detailed geological surveying, identifying weak zones and fault lines, and planning blast patterns that avoid these vulnerable areas. This preliminary preparation allows excavation to proceed while minimizing the risk of triggering collapses or rock bursts
Solution Approach 2:
The patent applies preliminary anti-action by designing blast patterns that preemptively avoid known geological weaknesses. The drilling holes are strategically positioned to fracture rock along stable joints rather than through weak zones, and charge quantities are controlled to prevent excessive stress on unstable rock masses, thereby preventing engineering accidents before they can occur
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 equipment ensures high mechanization, rock integrity, and environmental protection while enhancing excavation efficiency, allowing for customized rock cutting and reduced equipment replacement needs, thereby improving safety and economic value.
Implementation Method 1
The drilling manipulation room and the cutting manipulation room are equipped with vibration-absorbing rubber layers there-below
Implementation Method 2
The hard-rock cutting device includes hydraulic steel rods
Implementation Method 3
The hydraulic steel rods are twenty in number/amount, and the twenty hydraulic steel rods are arranged around (e.g., four sides of) the hard-rock cutting device
Data Source
AI summary
A travelling-type tunnel hard-rock micro-damage cutting equipment and a construction method associated therewith are provided. The cutting equipment includes: a crawler-type trolley; and a hard-rock drilling construction apparatus, a hard-rock cutting construction apparatus, a self-unloading tipping bucket and a visual operation terminal all arranged on the crawler-type trolley. The hard-rock cutting construction apparatus includes: a cutting manipulation room, a rock-breaking power arm, and a hard-rock cutting device including a hydraulic steel robs, a signal sensor, an infrared lens and a light source assembly. The infrared lens and the light source assembly are arranged at the front end of the hard-rock cutting device, and a working image can be transmitted to the visual operation terminal through the signal sensor. The cutting equipment can accurately and efficiently cut a rock mass, and the cut rock mass can be reused according to secondary processing conditions of rock to improve economic benefits.