论文部分内容阅读
新疆库车铜场水库泄洪隧洞轴线方向NW342°→SE160°,长500m、直径7m,园形,为压力隧洞。隧洞处地层为中上新统康村组砂泥岩互层,泥岩为主,大部岩层含盐。岩层中裂隙较多,有些地段,特别是进水洞口,岩石较破碎。层面节理最发育,规模较大,面平直、光滑、闭合,层内一部分为软弱夹泥层和层间错动。其他方向的节理一般较短。砂岩中节理一般短,有些局限于砂岩层内。大部分为剪切节理,面平直、光滑、闭合,少数张节理毛糙,并有极少数弧形裂隙,除部分地段裂隙中夹石膏外,一般无充填物。隧洞局部地段有滴水、浸水现象,随雨季加大,为雨水、雪融水通过裂隙、砂岩和砂泥岩交界层面渗出。
Xinjiang Kuqa copper field flood discharge tunnel axis direction NW342 ° → SE160 °, length 500m, diameter 7m, garden-shaped, as a pressure tunnel. The strata in the tunnel are mainly interbedded with sand-mudstone of the Middle and Upper Pleistocene in the Kangcun Formation, mainly mudstone, with most of the salt in the formation. There are more fractures in the rock formation. In some areas, especially the water inlet, the rock is fragmented. The most developed level of joints, large-scale, straight surface, smooth, closed, part of the layer for the weak mud layer and layer between the staggered. Joints in other directions are generally shorter. The joints in sandstone are generally short, and some are confined to the sandstone. Most of the shear joints, straight, smooth, closed, a few Zhang joints coarse, and a very small number of arc-shaped cracks, in addition to some cracks in the folder plaster, the general lack of filling. In some sections of the tunnel, there is drip and water immersion phenomenon, which increases with the rising of rainy season. The rain and snowmelt water seep out through the interface of fissure, sandstone and sandstone and mudstone.