看中国工程师如何给地球深部“做手术”

Core Insights - A significant engineering achievement has been made by the China Coal Science & Technology Group in Xinjiang, successfully implementing a 1500-meter deep water conveyance tunnel grouting project, setting a world record for the deepest surface grouting [1] Group 1: Engineering Challenges and Innovations - The project faced unprecedented challenges due to high geostress, high water pressure, and the presence of a 300-meter wide fault zone at a depth of 1500 meters, which traditional methods struggled to address [2] - An innovative exploration method was developed, utilizing surface directional drilling and advanced techniques such as borehole geophysical exploration and hydrological analysis, creating a comprehensive exploration system [2] - The team achieved a breakthrough in accurately identifying fault characteristics at great depths using deep-hole long-distance geophysical exploration technology, with a detection range of 2504 meters [2] Group 2: Grouting Techniques and Outcomes - The project team implemented a "segmented strategy and precise grouting" approach, developing specialized materials and equipment to perform precise grouting under ultra-high pressure conditions of 40 MPa, equivalent to 400 atmospheres [3] - The successful execution of this project fills a gap in China's ultra-deep water conveyance tunnel grouting technology, marking a significant advancement in geological exploration and grouting techniques [3] - This achievement not only addresses practical engineering challenges but also provides reliable technical support and valuable experience for the safe development of deep underground spaces globally [3]