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Future Development Directions for Fully Automatic Wet Spraying Boom Trucks
Release time:
2026-05-04
Source:
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Summary:
Fully automated wet-spraying trolleys, as the core equipment for support operations in tunnel and underground engineering, are seeing technological advancements that are profoundly impacting construction safety, efficiency, and quality. Future developments will go beyond mere functional upgrades and instead move toward ** Highly intelligent, green and low-carbon, lean manufacturing processes, and platform-based operations and maintenance ** This comprehensive directional evolution ultimately drives the transformation of tunnel construction methodologies toward more secure, efficient, and cost-effective industrialized production.
I. Intelligence and Autonomy: From “Automatic Execution” to “Autonomous Decision-Making”
Current fully automated wet-spray trolleys are already capable of spraying along pre-set paths. The core of future development lies in endowing these machines with enhanced environmental perception and autonomous decision-making capabilities.
Intelligent Environmental Perception Fusion: This approach integrates more advanced 3D laser scanning, machine vision, and multi-sensor fusion technologies. The equipment can construct a real-time, high-precision digital model of the tunnel excavation face and automatically identify geological features such as rock fractures and water seepage points, providing a basis for spray-concrete application strategies.
Adaptive Spraying and Path Planning: Leveraging real-time scan data, the system autonomously generates and dynamically optimizes spraying paths and parameters. For instance, it automatically increases spray thickness and accelerates-setting admixture dosage in loose, fractured areas, while optimizing coverage strategies in smooth, stable zones to minimize material consumption—enabling true “one-click intelligent spraying.”
Digital Twins and Predictive Maintenance: Equipment will be equipped with a fully synchronized “digital twin” in the cloud. By conducting real-time analysis and machine learning on operational data, it can not only provide early warnings of mechanical failures but also predict the remaining useful life of critical components, thereby enabling a shift from scheduled maintenance to predictive maintenance.
II. Green Power and Low-Carbon Operations: Fully Embracing New Energy
Environmental pressures and the imperative of sustainable development are driving a fundamental transformation of powertrains.
Pure electric drive is becoming the mainstream: With advancements in battery energy density and breakthroughs in charging technology, high-power, long-range all-electric wet-spray rigs are poised to become the market’s workhorse. Their zero-emission and low-noise characteristics make them particularly well-suited for large, long tunnels and urban underground projects that have stringent ventilation requirements.
Hybrid Power and Exploration of New Energy Sources: For remote projects where grid access is challenging, hybrid diesel-electric or fuel-cell hybrid power systems offer flexible solutions. Hydrogen fuel cells, as a clean energy source, hold significant potential for providing continuous power.
Energy Recovery and Efficient Management: Equipment will widely incorporate energy recovery systems—such as regenerative braking for boom lowering—and employ intelligent energy management systems to optimize overall power consumption, thereby maximizing energy utilization efficiency.
III. Integration and Precision in Construction Processes: From “Spraying” to “Integrated Operations”
The wet-spray trolley will no longer be a standalone spraying device; instead, it will evolve into an intelligent operations platform integrating multiple functions.
Multi-functional front-end integration: The robotic arm’s end-effector is modular, enabling rapid tool changes—such as integrating a drilling unit for anchor bolt installation or swapping in a bucket for initial muck removal—thus achieving “one machine, multiple functions,” reducing equipment repositioning, and improving operational efficiency.
Adaptation of New Materials and Processes: As spray concrete materials continue to evolve—such as high-performance fiber-reinforced concrete and geopolymer concrete—equipment will be upgraded with advanced pumping systems, metering systems, and nozzle designs to ensure high-quality application of these novel materials.
Closed-loop quality control: By integrating sensors—such as radar thickness gauges and infrared imagers—onto the spray nozzle or boom, the system continuously monitors the thickness, density, and temperature variations of the sprayed layer, feeds this data back to the control system, and makes real-time adjustments to the spraying parameters, thereby establishing a “detection” - Adjust - A closed-loop quality control system for “homework.”
IV. Cloud-Based and Platform-Driven Construction Models: Integrating into the Smart Construction Site Ecosystem
The intelligence of a single piece of equipment will evolve into collaborative intelligence across the entire construction system.
Remote centralized control and unmanned operations: In 5G With the support of high-speed networks, operators can simultaneously monitor and control multiple wet-mix shotcrete units operating inside tunnels from a secure and comfortable ground control center, thereby achieving unmanned or minimally manned construction and significantly enhancing worker safety.
Cloud-based Big Data and Construction Management Platform: Construction data for all equipment—such as quantities, trajectories, quality parameters, and energy consumption—is uploaded in real time to the cloud management platform. Project managers can gain a holistic view of progress, quality, and costs, while the platform leverages big data analytics to recommend optimal construction parameters for different geological sections, enabling continuous optimization of construction plans.
Industrial-chain collaboration: Equipment data can be integrated with concrete batching plants and material supply chains to enable on-demand, just-in-time production and delivery, thereby driving the entire industrial chain toward lean, digital collaboration.
Summary
The future development of fully automated wet-spraying trolleys represents an evolutionary journey—from replacing human labor to surpassing it, ultimately reshaping production processes. These systems will evolve from powerful “construction tools” into intelligent construction terminals that integrate perception, decision-making, execution, and learning. This transformation will shift tunnel support operations from labor-intensive practices reliant on individual experience to data-driven, standardized, and controllable industrialized processes, fundamentally elevating the overall quality and core competitiveness of underground engineering construction.
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