向“新”向“绿”，新突破！能源“大动脉”再添“多重保险” 夯实经济硬支撑

Group 1: Pipeline Construction Achievements - The first mountain tunnel of the Guozi Valley pipeline, part of the West-East Gas Transmission project, has been completed, marking a breakthrough in the construction capabilities of long-distance pipelines under complex geological conditions [1][5][12] - The Guozi Valley pipeline project includes four long-distance mountain tunnels, which are the longest, largest cross-section, highest elevation, and greatest height difference tunnels in China's oil and gas pipeline sector [5][10][12] Group 2: Project Specifications and Impact - The total length of the four tunnels is 23.16 kilometers, with a height difference of 668 meters, equivalent to the height of 1.5 "Little Waist" towers [10] - The project is expected to be fully operational by September 2027, and the existing West-East Gas Transmission pipelines have already transported over 557 billion cubic meters of natural gas, benefiting 500 million people along the route [7][8] Group 3: Environmental and Operational Benefits - The use of the largest diameter and longest construction distance dual-shield full-face hard rock tunnel boring machine ensures an average safe excavation of 450 meters per month [12] - The project will operate in conjunction with existing pipelines, providing a backup and enhancing the safety of the West's oil and gas energy corridor, while also reducing carbon emissions by 53% under the same material consumption conditions [12]