基于Mini-Diver的降水头试验在砂砾石层的应用  

Application of Mini-Diver based falling head test in gravel and sand layer

作　　者：罗延婷[1] 王耀邦[1] 岳永峰[1] 张辉[1] 刘振红[1] 

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《人民长江》2014年第15期86-88,共3页Yangtze River

摘　　要：对格尔木某拟建水库工程坝址区河床的深厚砂砾石层进行钻孔注水试验,在钻孔的各试段同时进行常水头和基于Mini-Diver的降水头注水试验。钻孔注水试验结果表明,基于Mini-Diver的降水头试验在深厚砂砾石层应用上是可行的,而且试验方法更优于常水头注水试验。对于渗透系数较大的地层,采用该方法不仅大大缩短试验时间,而且能获取大量的观测数据和观测水头下降的整个过程,计算的砂砾石层渗透系数也更符合实际。Borehole and water injection tests, including constant head water injection test and Mini - Diver based failing head test, were conducted in deep sand and gravel layer for a dam site of a planned reservoir in Golmud. Test results show that the Mini - Diver based falling head test is practical in deep sand and gravel layer with better effect than constant head test. Especially for relative stronger pervious layers, the proposed falling head test could obtain a large quantity of measuring data as well as the hole head falling process with less time consuming, and the pervious coefficient calculated by this method is more reasonable.

关 键 词：Mini—Diver 降水头注水试验 砂砾石层 渗透系数 

分 类 号：P642[天文地球—工程地质学]