September 26-27，The Conference on Construction Management and Technological Innovation of Expressway Reconstruction and Expansion Project in 2024 was held in Wuhan, Hubei Province。The meeting gathered nearly 700 experts from the highway industry.、Scholar，Relying on the reconstruction and expansion project of the section from Henan-Hubei boundary to Junshan in Hubei Province of Beijing-Hong Kong-Macao Expressway，The total length of the project is about 157.79 kilometers，The whole line is adopted“Widening on both sides，Partially separate and widen new”Reconstruction and Expansion Scheme of Two-way Eight-lane Expressway，Promote innovation in construction technology and management，Promoting the Quality Development of Expressway。
Afternoon on the 27th，Experts attending the meeting went to the project site of the 4th bid section to observe.，Project owner: Hubei Jiaotong、The general conTractor of the project, China Railway 11th Bureau, and the construction unit, Liaoning Guotai Road and Bridge and Sany Heavy Industry, jointly completed the unmanned cluster intelligent paving and rolling operation of the large-width pavement.。
Witnessed by industry experts，The SANY UAV fleet has successfully completed the industry's first maximum width pavement.、The largest unmanned paving construction demonstration，It marks that the level of intelligent construction of highway construction in China has stepped up to a new level.。
Ultra-large-scale unmanned cluster construction，Efficient coordination of standard operation，Improve construction quality
High-speed surface construction，Extremely high requirements for rolling equipment and operation process。This time, a number of Sany high-end unmanned pavement equipment were used.，Including a 20m wide Paver、Six sets of 13-ton double-drum Road Roller、Three 30t rubber-tired rollers，With 1+3+3+The line-ups has formed the huge construction machine group.，Based on the intelligent scheduling algorithm, the standardized operation of the cluster is realized.。
Beidou Centimeter Level High Precision Positioning System and Self-built Low Delay Communication Network，The real-time optimal path planning of the machine group is realized strictly according to the requirements of the rolling process.，Realized“Follow the slow pressure”，Avoid pressure leakage、Undervoltage，Ensure the rolling quality。
One-time full-width paving width 19.25 meters，Technological innovation leads the trend
What is particularly striking is that，Sany is out this time.SAP200C-10 wide unmanned Paver，In the actual construction, 19.The paving width of 25 meters realizes one-time paving formation.，This is the first time in the field of road construction at home and abroad.。
High and flat、Resistance to segregation、Strong power、Save operation
SAP200C-The 10 Paver is for high speed 2 lanes~Construction artifact created by 4-lane asphalt wide construction，In this project，SAP200C-The 10 large-width paver not only greatly improves the construction efficiency，Reduced number of seams，It also effectively improves the smoothness and durability of the road surface.，It has injected strong technical impetus into the reconstruction and expansion project of Beijing-Hong Kong-Macao Expressway, the main national traffic artery.。This attempt，It is undoubtedly a major breakthrough in traditional paving technology.，It marks a double leap in the width and efficiency of China's road construction technology.。
Fusion self-sensing high-precision positioning system，Realization"0"Welt rolling
Compaction accuracy of welt is an important assessment dimension of roller operation skill，Operators with rich driving experience may have the situation that the edge is leaked or the curb is damaged.。
The SANY UAV group applied in this project，Through high-precision path tracking algorithm and self-developed fusion high-precision self-sensing positioning system，The accurate identification and positioning of roadside stones are realized.，I really did it“0”Welt operation。Trimming operation without small roller，Road surface one-step forming，It greatly improves the efficiency and quality of operation.。
Redundant safety design，Ensure the safety of operation
Site safety is a top priority，Safety is more important for UAV fleet.。The unmanned Compactor group obtains all the operation status and surrounding obstacle information of all the equipment in real time.，Cooperative security is set、Electronic fence、Emergency stop system、Multiple Redundancy Safety Protection Strategy of Perceptual Obstacle Avoidance System，Equipment deceleration can be realized in real time according to risk level、Pause、Emergency stop action，Ensure the safety of operation。
The project is of great significance，Boost the construction of a strong transportation country
The Beijing-Hong Kong-Macao Expressway is an important traffic trunk line connecting the north and south of China.，Its reconstruction and expansion project will alleviate traffic pressure.、It is of inestimable value to promote regional economic development.。
Successful Application of Unmanned Cluster on Large Width Pavement，It not only accelerates the construction progress of the project.，More through intelligence、Automated construction method，The quality and safety of the project are ensured.，It has also been highly praised by the owners.，It is hoped that the unmanned construction mode will be fully introduced in the follow-up construction of the project.，To create green、Intelligence、Contribute to an efficient modern transportation network。
