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位于广西贺州市昭平县水姆塘村北约1 km处山区的隧道,分左右隧道,两隧道平行,相距约34m。其中左线进出口里程0ZK173+060-ZK1173+580,长520m,底板最大埋深约78m,位于ZK173+370处;右线进出口里程K173+080-K1173+590,长510m,底板最大埋深约78m,位于K173+350处。两者均为中隧道,且均为曲线隧道。项目位于华南板块南华活动带大瑶山隆起之东偏南,区域上褶皱、断层发育,而隧址区则位于黄姚短轴向斜北翼,岩层整体呈南西向斜的单斜构造,产状195。∠20°隧址区无断层发育。
The tunnel, located in the mountainous area about 1 km north of Shimmutang Village, Zhaoping County, Hezhou, Guangxi, is divided into two tunnels, with a distance of about 34m. The entrance and exit mileage of the left lane is 0ZK173 + 060-ZK1173 + 580 and the length is 520m. The maximum depth of the floor is about 78m, which is located at ZK173 + 370. The right-side inlet and outlet mileage is K173 + 080-K1173 + 590 and the length is 510m. About 78m, at K173 + 350. Both are tunnels, and are curved tunnels. The project is located in the South Devonian South China belt in the South Devonian uplift to the east and south of the area with folds and faults. The tunnel area is located in the north wing of Huangyao short axis syncline with a monocline structure with southwest-west syncline 195. ∠20 ° tunnel area without fault development.