公开(公告)号：EP3361006B1

公开(公告)日：2020-05-27

申请号：EP17854216.3

申请日：2017-06-13

申请人： Hohai University

发明人： ZHU, Wei ,  SHU, Shi ,  WANG, Shengwei ,  XU, Haoqing ,  FAN, Xihui

IPC分类号： E02D31/00

公开(公告)号：EP3235576A1

公开(公告)日：2017-10-25

申请号：EP16810699.5

申请日：2016-01-04

申请人： Hohai University

发明人： ZHU, Wei ,  SHU, Shi ,  WANG, Shengwei ,  XU, Haoqing ,  FAN, Xihui ,  BAO, Jianping ,  MIN, Fanlu

IPC分类号： B09B3/00 ,  E02D31/00

CPC分类号： E02D31/004 ,  B09B1/00 ,  B09B1/004 ,  B09B3/00 ,  E02D31/00 ,  E02D31/02 ,  E02D31/025 ,  E02D2250/0023 ,  E02D2300/0015 ,  E02D2300/0037 ,  E02D2300/0079

摘要： The invention relates to a refuse landfill impervious system capable of prolonging breakdown time of leachate and a manufacturing method thereof. The system comprises a leachate collection and drainage layer, a first HDPE (high-density polyethylene) geomembrane impervious layer, a clay layer and a groundwater collection and drainage layer which are sequentially stacked from top to bottom. The clay layer is composed of a lower clay layer, a middle clay layer and an upper clay layer which are sequentially arranged, wherein the middle clay layer is filled with a medium-fine sand layer laid with sands of particle sizes ranging from 0.1 mm to 0.5 mm and of water contents ≤ 3%, wherein the saturated permeability coefficient of the medium-fine sand layer varies from 1×10 -5 to 1×10 -3 cm/s. Therefore, breakdown time of the leachate can be greatly prolonged, and the imperious effects of a refuse landfill impervious layer can be enhanced; meanwhile, the medium-fine sands are readily available as they are low in cost and widely spread in China. The refuse landfill impervious system capable of prolonging breakdown time of the leachate has a simple structure and is able to effectively prevent the groundwater from permeating in order to saturate the medium-fine sand layer, keeping the medium-fine sand layer in an unsaturated state all the time.

摘要翻译： 本发明涉及一种能够延长沥出液破裂时间的垃圾填埋防渗系统及其制造方法。 该系统包括渗沥液收集和排水层，第一HDPE（高密度聚乙烯）土工膜不渗透层，粘土层和地下水收集和排水层，其从顶部到底部依次堆叠。 粘土层由依次排列的下粘土层，中粘土层和上粘土层组成，其中中间粘土层填充有中等细砂层，其中铺设有0.1〜 0.5mm，含水率≤3％，其中中细砂层的饱和渗透系数为1×10-5〜1×10-3cm / s。 因此，渗滤液的击穿时间可以大大延长，并且垃圾填埋场不透水层的重要作用可以得到加强; 同时，中细砂的成本低廉，在中国广泛普及。 能够延长渗滤液破坏时间的垃圾填埋防渗体系结构简单，能够有效防止地下水渗透，使中细砂层饱和，中细砂层保持不饱和状态 时间。

公开(公告)号：EP3361006A1

公开(公告)日：2018-08-15

申请号：EP17854216.3

申请日：2017-06-13

申请人： Hohai University

发明人： ZHU, Wei ,  SHU, Shi ,  WANG, Shengwei ,  XU, Haoqing ,  FAN, Xihui

IPC分类号： E02D31/00

CPC分类号： E02D31/004 ,  E02D31/006 ,  E02D2300/0037 ,  E02D2450/106

摘要： The present invention relates to a simple method for determining breakthrough time of anti-seepage liners in a landfill. The method includes the following steps: (a) detecting a leachate sample of the landfill to determine the initial concentration C 0 of typical pollutants, and monitoring the leachate head h of the landfill; (b) determining the harm-causing or pollution-causing concentration C A of the pollutants according to functional orientation of local groundwater of the landfill; (c) determining, through researches, related parameters of the anti-seepage liners and related parameters of pollutant migration, the related parameters of the anti-seepage liners including the thickness z of the seepage liners, the permeability coefficient k of the liners, and the porosity n of the material of the liners; and the related parameters of pollutant migration including the effective diffusion coefficient D a * and the mechanical dispersion coefficient D m of the pollutants in the anti-seepage liners, and the adsorption retardation factor R d of the anti-seepage liners on the pollutants; and (d) calculating the breakthrough time t of the anti-seepage liners according to a formula (1). The method can be widely applied to design, management, subsequent repairing and other work of anti-seepage liners in a landfill.