Five "sea-based small waists" have successively topped out, and the Gaolan Port Bridge and Huangmaohai Bridge have been successfully joined... Since the beginning of this year, more than 5,000 builders of the Huangmaohai Cross-Sea Link have united their efforts to complete the construction tasks at various project milestones on time and with quality. At present, the Huangmaohai Cross-Sea Link project has been fully connected, the roadbed works have been entirely completed, and steel bridge deck paving has reached nearly 30% of the total, sprinting toward the goal of official opening by the end of the year.
　　As the fourth quarter of this year approaches, multiple transportation projects in Guangdong are closely tracking progress and advancing steadily to ensure the successful completion of the full-year production and construction tasks, providing support for Guangdong's high-quality economic and social development.
　　Kicking off the "final battle" of project construction
　　In July this year, the Huangmaohai Cross-Sea Link project held a labor competition mobilization meeting themed "Strive for 150 Days, Win the Opening," officially launching the "final battle" of project construction.
　　A relevant person in charge of the Huangmaohai Cross-Sea Link Management Center introduced: "The Huangmaohai Cross-Sea Link project is located in sea areas that are hot and rainy with frequent extreme weather. On the premise of ensuring quality, the project department efficiently coordinated and organized operations, kept constant watch on weather conditions, and construction personnel seized the brief window periods of clear skies and higher temperatures to advance bridge deck paving."
　　To improve construction quality and efficiency, the project department innovatively applied intelligent equipment such as an automatic epoxy resin barrel opener, an automatic weighing, mixing and feeding system, and an intelligent coating system for the epoxy resin bonding layer. The functional teams each fulfilled their duties, strictly controlling every process and strictly implementing waterproofing, oil control and zero-pollution management.
　　The Huangmaohai Cross-Sea Link project is making every effort to advance pavement construction, striving to complete the steel bridge deck paving plan by the end of November and going all out to sprint toward the goal of opening by the end of the year.
　　In the second phase of the Zhanjiang Airport Expressway project, dedicated personnel have been assigned to be responsible for measurement and recording throughout the pavement construction process, strictly controlling each construction stage of asphalt concrete mixing, transportation, paving, rolling and testing to ensure that the asphalt pavement paving quality meets standards.
　　At present, the second phase of the Zhanjiang Airport Expressway project has fully entered the asphalt pavement construction stage, and works such as buildings, electromechanical systems and traffic safety facilities are all advancing steadily, sprinting toward the goal of opening to traffic by the end of the year. Previously, the project's roadbed works had been fully completed, and the bridge and culvert works are nearing completion.
　　The Zhanjiang Airport Expressway is a key project in Guangdong Province, with Phase I and Phase II constructed simultaneously. Among them, Phase I is about 18 kilometers long and was completed and opened to traffic on December 28, 2023; Phase II is about 7 kilometers long, and the project is planned to be fully completed and opened to traffic in 2024.
　　New techniques facilitate "flow-line operations"
　　In the Nansha-Zhuhai (Zhongshan) Intercity project undertaken by CCCC Fourth Harbor Engineering Co., Ltd. (hereinafter referred to as "CCCC Fourth Harbor Engineering"), the construction of 188 underground diaphragm walls for the main body of Xingzhong Station was completed in 178 days, 92 days ahead of schedule, laying a solid foundation for subsequent foundation pit excavation and main structure construction. The project is expected to move on to the next stage of shield machine lowering construction by the end of October this year.
　　Li Xiaolong, project manager of Work Area 1 of Bid Section 1 of the Nansha-Zhongshan Intercity project of CCCC Fourth Harbor Engineering, introduced that the average depth of the main foundation pit at Xingzhong Station reaches 22.5 meters. Before excavation, an underground diaphragm wall built from 22,462 cubic meters of concrete and 3,706 tons of steel rebar was needed, acting like an "impregnable fortress" to protect the surrounding soil layers and ensure smooth implementation of foundation pit excavation.
　　Before the construction of the underground diaphragm wall, the project team analyzed the stratum conditions based on preliminary geological survey data and ultimately determined to adopt a new combined construction technique of "trenching machine + rotary drilling rig + double-wheel trench cutter + crawler crane." This technique features low vibration and high efficiency. Through optimized sequencing, it can achieve 24-hour continuous operation, forming "flow-line operations" and rapidly completing the underground diaphragm wall construction while ensuring construction safety and quality.
　　Good news has also recently come from the Guangdong East Intercity Railway project, a key provincial transportation project. Among them, in the Shantou section of the Guangdong East Intercity Railway, two continuous girder units of the Jinfeng Peninsula Station to Laicuo Station grand bridge, undertaken by China Railway 12th Bureau Group, were successfully joined.
　　The completion of this key milestone marks a significant acceleration in the project's construction progress. "This not only provides a solid foundation for the large-scale girder erection construction to follow, but also further advances the construction process of the Shantou section of the Guangdong East Intercity Railway. We will advance steadily and efficiently complete the full-year production targets," introduced Bao Junping, project manager of Work Area 2 of Bid Section 7 of the Guangdong East Intercity Railway of China Railway 12th Bureau.