【摘要】 宝灵山隧道是川藏铁路中典型的非可溶岩深埋隧道，隧道埋深2 023 m,穿越6条断层破碎带和1条解译断层，当隧道穿越断层破碎带时，由于其埋藏较深，极易发生高压涌突水，对施工造成影响。通过分析花岗岩断裂带涌水特征，结合水文地质条件分段计算预测隧道正常涌水量及最大涌水量，针对降雨入渗系数法计算隧道不同段落单宽流量，预测隧道易发涌突水段落，并通过物探方法进行验证。结果表明：花岗岩地层，隧道穿越断层破碎带易引发涌突水灾害；经过计算，隧道正常涌水量分别为64 560 m~3/d、62 813 m~3/d、80 961 m~3/d和78 474 m~3/d;隧道最大涌水量分别为94 220 m~3/d和81 026 m~3/d;易发高压涌突水段落为F103水井湾断层、F100咱里断裂、F92断裂和F88断裂，预测结果与物探解译结果吻合。更多还原

【Abstract】 Baoling Mountain tunnel is a typical deep buried tunnel of non-soluble rock in Sichuan-Tibet Railway.The tunnel has a burial depth of 2023 meters and passes through 6 fault fracture zones and 1 interpretation fault.When the tunnel passes through the fault fracture zone, it is easy to occur high pressure water inrush due to its deep burial, which affects the construction.By analyzing the characteristics of water gushing in granite fault zone, the normal water gushing and maximum water gushing in tunnel were calculated and predicted by sections combined with hydrogeological conditions.The single width flow of different sections of tunnel was calculated by rainfall infiltration coefficient method, and the section prone to water gushing was predicted, which was verified by geophysical exploration method.The results show that: granite stratum, tunnel through fault fracture zone easily cause water inrush disaster. After calculation, the normal water inflow of the tunnel is 64 560 m~3/d, 62 813 m~3/d, 80 961 m~3/d and 78 474 m~3/d respectively andthe maximum water inflow of the tunnel is 94 220 m~3/d and 81 026 m~3/d, respectively. The sections prone to high pressure water inrush are F103 fault, F100 fault, F92 fault and F88 fault.The predicted results are consistent with the geophysical interpretation results.更多还原