Core Insights - The Shanghai Hongxin Drainage Pump Station's initial rainwater regulation and storage pipeline project has achieved a significant milestone with the launch of the country's first large-diameter initial rainwater regulation vertical shaft tunneling machine [1][2] - This project is a landmark in domestic mechanical vertical shaft construction, designed to intercept 4,700 cubic meters of initial rainwater per event, thereby alleviating pressure on urban drainage systems and improving downstream water quality [2] Group 1 - The project is located in Qibao Town, Minhang District, Shanghai, featuring a circular vertical shaft with a maximum excavation diameter of 16.3 meters and a depth of 44.6 meters [1] - The tunneling machine weighs approximately 522 tons and has a maximum power of 1,400 kilowatts, equipped with advanced intelligent tunneling technologies to address various construction challenges [1][2] Group 2 - The construction team employs a "data feedback + mechanical adjustment" dual control mechanism to ensure the verticality deviation of the deep shaft is less than 0.2% [2] - To tackle the challenge of the sinking of the shaft, the team enhanced the pushing cylinder's power to assist in the sinking process, thereby improving tunneling efficiency [2]