排水竖井在垃圾填埋场滑移治理中的应用及效果分析
发布时间：2018-08-23 10:50
【摘要】：垃圾填埋场滑移会造成严重的人员财产损失和环境污染,填埋场稳定控制和滑移的治理方法较为缺乏。在国内某失稳填埋场开展竖井排水滑移治理试验,监测治理前后的表面位移、深层位移、渗滤液水位和渗滤液导排量,评估滑移治理效果。并进一步利用Geo-Studio软件评估排水竖井不同导排时间、导排流量及布置方式时的稳定控制效果。结果表明:排水竖井使用后,填埋场最大滑移面积从监测总面积的68%降为17%,深层平均滑移速率从2.43 mm/d降为0.95 mm/d;10口排水竖井的最大导排流量279 m~3/d,平均导排流量为164 m~3/d;模拟分析表明,排水竖井工作时间越长,导排流量越大,堆体越快趋于稳定;在相同导排总量的条件下,布置3排竖井滑移治理效果优于布置1排和2排的效果,当布置2排时,排间距为10 m的效果优于排间距为20 m的效果。排水竖井滑移治理和稳定控制应用效果较好,可为填埋场堆体稳定控制提供参考。
[Abstract]:The slippage of landfills will cause serious damage to people's property and environmental pollution, and the methods of controlling landfills' stability and slippage are lacking. In a domestic unstable landfill, the drainage slip treatment test of shaft is carried out to monitor the surface displacement, deep displacement, leachate water level and leachate conductivity before and after treatment, and to evaluate the effect of slippage treatment. Geo-Studio software is used to evaluate the stable control effect of drainage shaft with different guiding time, discharge rate and layout. The results show that: after the use of drainage shaft, The maximum slip area of landfills is reduced from 68% of the total monitored area to 17%, and the average slip rate of the deep layer is reduced from 2.43 mm/d to 0.95 mm / d for 10 drainage shafts with a maximum flow of 279mt / d and an average flow rate of 164mm3 / d.The simulation analysis shows that the working time of the drainage shaft is longer. The larger the discharge, the faster the pile tends to be stable. Under the condition of the same total amount of guide and discharge, the effect of layout of 3 rows of shaft slippage is better than that of layout 1 row and 2 row, when the second row is arranged, the control effect is better than that of layout 1 row and 2 row. The effect of 10 m spacing is better than that of 20 m row spacing. The application effect of drainage shaft slip control and stability control is good, which can provide reference for landfill heap stability control.
【作者单位】： 浙江大学岩土工程研究所;软弱土与环境土工教育部重点实验室(浙江大学);西安市固体废弃物管理处;
【基金】：国家重点基础研究发展计划(“973”计划)项目(2012CB719800) 国家自然科学基金青年基金项目(41502276)
【分类号】：X705
，
本文编号：2198856
[Abstract]:The slippage of landfills will cause serious damage to people's property and environmental pollution, and the methods of controlling landfills' stability and slippage are lacking. In a domestic unstable landfill, the drainage slip treatment test of shaft is carried out to monitor the surface displacement, deep displacement, leachate water level and leachate conductivity before and after treatment, and to evaluate the effect of slippage treatment. Geo-Studio software is used to evaluate the stable control effect of drainage shaft with different guiding time, discharge rate and layout. The results show that: after the use of drainage shaft, The maximum slip area of landfills is reduced from 68% of the total monitored area to 17%, and the average slip rate of the deep layer is reduced from 2.43 mm/d to 0.95 mm / d for 10 drainage shafts with a maximum flow of 279mt / d and an average flow rate of 164mm3 / d.The simulation analysis shows that the working time of the drainage shaft is longer. The larger the discharge, the faster the pile tends to be stable. Under the condition of the same total amount of guide and discharge, the effect of layout of 3 rows of shaft slippage is better than that of layout 1 row and 2 row, when the second row is arranged, the control effect is better than that of layout 1 row and 2 row. The effect of 10 m spacing is better than that of 20 m row spacing. The application effect of drainage shaft slip control and stability control is good, which can provide reference for landfill heap stability control.
【作者单位】： 浙江大学岩土工程研究所;软弱土与环境土工教育部重点实验室(浙江大学);西安市固体废弃物管理处;
【基金】：国家重点基础研究发展计划(“973”计划)项目(2012CB719800) 国家自然科学基金青年基金项目(41502276)
【分类号】：X705
，
本文编号：2198856
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