新疆伊犁州奎屯市开干齐水库引水渠黄土特性分析

风积黄土层在自然界中普遍分布,由于其多孔性物理特点,受水浸润后会产生较大沉陷,对工程建设存在一定的危害。新疆奎屯市开干齐水库引水渠沿线地层为黄土层,由于明渠的挖深不同,黄土的湿陷性有所差异。针对现场黄土层的特征,对沿线黄土层成因、湿陷性特性进行了分析。根据原生黄土、次生黄土在平面及剖面上的分布规律和结合渠基础复合土工膜的防渗处理,分别采取浸水法和翻夯法,以防止渠水入渗导致湿陷性黄土的沉陷。

Analysis on Loess Characteristics of Diversion Canal at Kaigaiqi Reservoir in Xinjiang Kuitun City

Loess widely distributes in nature, because of its porous physical characteristics, it will sink after water infiltration. And it will cause certain harm on construction engineering. The soil layer of the division canal at Kaigaiqi Reservoir in Xinjiang Kuitun City is loess, and depending on different depths, the collapsibility differs. According to the characteristics of the on-site loess layer, the collapsibility and causes are analyzed. Based on the contribution trend and composite geo-membrane anti-seepage treatment, the methods of water immersion and rolling ram are used to prevent the drainage water infiltration in collapsible loess subsidence.