【摘要】：垃圾填埋場(chǎng)滑移會(huì)造成嚴(yán)重的人員財(cái)產(chǎn)損失和環(huán)境污染,填埋場(chǎng)穩(wěn)定控制和滑移的治理方法較為缺乏。在國(guó)內(nèi)某失穩(wěn)填埋場(chǎng)開展豎井排水滑移治理試驗(yàn),監(jiān)測(cè)治理前后的表面位移、深層位移、滲濾液水位和滲濾液導(dǎo)排量,評(píng)估滑移治理效果。并進(jìn)一步利用Geo-Studio軟件評(píng)估排水豎井不同導(dǎo)排時(shí)間、導(dǎo)排流量及布置方式時(shí)的穩(wěn)定控制效果。結(jié)果表明:排水豎井使用后,填埋場(chǎng)最大滑移面積從監(jiān)測(cè)總面積的68%降為17%,深層平均滑移速率從2.43 mm/d降為0.95 mm/d;10口排水豎井的最大導(dǎo)排流量279 m~3/d,平均導(dǎo)排流量為164 m~3/d;模擬分析表明,排水豎井工作時(shí)間越長(zhǎng),導(dǎo)排流量越大,堆體越快趨于穩(wěn)定;在相同導(dǎo)排總量的條件下,布置3排豎井滑移治理效果優(yōu)于布置1排和2排的效果,當(dāng)布置2排時(shí),排間距為10 m的效果優(yōu)于排間距為20 m的效果。排水豎井滑移治理和穩(wěn)定控制應(yīng)用效果較好,可為填埋場(chǎng)堆體穩(wěn)定控制提供參考。
[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.
【作者單位】： 浙江大學(xué)巖土工程研究所;軟弱土與環(huán)境土工教育部重點(diǎn)實(shí)驗(yàn)室(浙江大學(xué));西安市固體廢棄物管理處;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(“973”計(jì)劃)項(xiàng)目(2012CB719800) 國(guó)家自然科學(xué)基金青年基金項(xiàng)目(41502276)
【分類號(hào)】：X705
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本文編號(hào)：2198856