en.Wedoany.com Reported - As the Luohe Phase IV million-kilowatt unit project undertaken by CEEC Construction Group transitions from the peak of civil construction to equipment installation and system commissioning, the on-site construction logic, workface layout, and site usage demands have shifted accordingly. Many heavy construction equipment originally serving the main civil works have gradually lost their continuous use conditions. Their long-term occupation of key construction plots not only squeezes space for subsequent pipeline laying and auxiliary equipment positioning but also hinders standardized civilized construction management.
Based on the actual site conditions, the project department previously held a dedicated meeting on overall site layout optimization. This meeting focused on coordinated planning for the phased dismantling and removal of large machinery, functional reconfiguration of idle land, and dynamic adjustment of construction areas. Dismantling schedules were determined in conjunction with the construction plans of various disciplines, following the overall approach of phased disassembly, staggered construction, and orderly site clearance to advance the dismantling and transfer of idle large machinery in batches.
Following the established plan, the project recently concentrated on dismantling two heavy machines, with the dismantling of the 100-ton tower crane being the top priority due to complex construction constraints. The dismantling of this tower crane relied on auxiliary lifting by the on-site 80-ton tower crane. However, the 80-ton tower crane is the core equipment for boiler thermal power installation, operating around the clock to support on-site unit installation, and could not be shut down for extended periods to assist the dismantling work. The deep overlap of these two processes significantly compressed the effective construction window, making conventional continuous construction plans unfeasible. To minimize the impact of dismantling work on the main installation progress, the project's mechanization, engineering, and safety departments closely adhered to the dual goals of ensuring production and freeing up space set in the overall layout meeting. They repeatedly discussed and finalized a special plan for staggered construction and gap-interleaving operations.
Frontline workers voluntarily gave up their rest time, adopting a round-the-clock flexible construction mode. During the scorching midday heat of summer, staff worked under the open sun to dismantle components. They seized the evening gap after the thermal power team finished work, putting in overtime to catch up, making the most of every minute of effective working time. Through continuous efforts by all personnel, the main dismantling task of the 100-ton tower crane, originally scheduled for 10 days, was successfully completed in just 7 days, efficiently meeting the dismantling milestones set in the meeting.
On the third day after the completion of the 100-ton tower crane dismantling, the project promptly initiated the dismantling of the 85-ton crawler crane. Continuing the coordinated approach of overall layout optimization and the mature practice of staggered construction, the team deliberately avoided daytime peak construction and material transport periods, opting to carry out the dismantling work during the evening idle hours. The on-site personnel had clear division of labor and worked efficiently, completing the entire process of segmented boom disassembly, counterweight removal, chassis separation, and loading for transport. The entire dismantling and removal operation was wrapped up in just 2 hours, without any impact on normal construction or on-site traffic.
The successful dismantling and removal of the two large pieces of equipment effectively freed up critical construction land, achieving the goal of optimizing site resources. Going forward, the project department will continue to summarize the experience of staggered interleaving construction and multi-process coordinated management. In line with the overall plan for site layout optimization, it will steadily advance the clearance of remaining idle large machinery, continuously revitalize on-site space resources, and solidify the site foundation for subsequent equipment installation and system commissioning. (Yan Kailin)
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