论文部分内容阅读
湖南某铀矿有一种经过多次化学处理而形成的,工程性质异常特殊的人工土。它是在选矿过程中,由经粉碎的铀矿石的硫酸提取液里,用环氧树脂吸附法除去铀之后,废液中加石灰中和排放到尾矿库自然沉积而形成的。多年积累,目前已达12米以上,尾矿库已被完全充满。为了扩大库容充分挖掘该矿的潜力,拟在这些沉积物上面再修建挡土坝。在进行了一系列土工试验后发现该土的天然含水量高达125.4％(超过流限),孔隙比为3.50到4.00,压缩性很大,而抗剪性能却很好,固结快剪的C值为0.15kg/cm~2,f值
A uranium mine in Hunan Province has an artificial soil that has undergone multiple chemical treatments and is of unusual engineering nature. In the beneficiation process, uranium ore is extracted from the smashed uranium ore by sulfuric acid, and the uranium is removed by the epoxy resin adsorption method. After the uranium is added to the waste liquid, the lime is neutralized and discharged to the tailing pond for natural deposition. Accumulated over many years, it has now reached more than 12 meters and the tailings pond has been completely filled. In order to expand the storage capacity and fully tap the potential of the mine, it is proposed to construct a retaining dam above these sediments. After conducting a series of geotechnical tests, it was found that the natural water content of the soil was as high as 125.4% (over the flow limit), the porosity ratio was 3.50 to 4.00, and the compressibility was great, but the shear performance was very good, and the consolidated fast shear C The value is 0.15kg/cm~2, f value