国内首台7米直径反井钻机施工的排风竖井贯通

Core Viewpoint - China Electric Power Construction (中国电建) has successfully completed the ventilation shaft of the Zhejiang Jingning pumped storage power station using the country's first 7-meter diameter reverse well drilling machine, marking a significant technological advancement in ultra-large diameter reverse well drilling machinery in China [1] Company Summary - China Electric Power Construction is responsible for the investment, design, and construction of the Zhejiang Jingning pumped storage power station [1] - The completion of the ventilation shaft fills a technological gap in China's ultra-large diameter reverse well drilling capabilities [1]