發(fā)布時(shí)間：2018-06-27 12:52

  本文選題：垃圾填埋場(chǎng) + 封場(chǎng)系統(tǒng)�。� 參考：《西南交通大學(xué)》2017年碩士論文

【摘要】：大氣降雨后導(dǎo)排不良是威脅生活垃圾填埋場(chǎng)結(jié)構(gòu)安全的一大隱患,垃圾填埋堆體上方存在的大量積水也是垃圾滲濾液產(chǎn)生量增加的潛在源頭。強(qiáng)化封場(chǎng)系統(tǒng)導(dǎo)排性能的研究是保證生活垃圾填埋場(chǎng)穩(wěn)定安全運(yùn)行的迫切需要。本研究擬利用毛細(xì)透排水帶的毛細(xì)吸力強(qiáng)化植被土層的導(dǎo)排能力,以達(dá)到強(qiáng)化填埋場(chǎng)封場(chǎng)系統(tǒng)導(dǎo)排性的目的。本研究在對(duì)國(guó)內(nèi)外垃圾填埋場(chǎng)封場(chǎng)系統(tǒng)結(jié)構(gòu)及阻塞原因等方面研究進(jìn)行綜述的基礎(chǔ)上,通過(guò)模擬大氣降雨試驗(yàn),采用單因素分析,確定大氣降雨強(qiáng)度、支持土層的土質(zhì)和排水帶高度、布設(shè)密度、布設(shè)位置、是否設(shè)置專用排水管等因素對(duì)強(qiáng)化導(dǎo)排效果的影響;利用正交試驗(yàn)法,研究砂土、粉質(zhì)粘土和粘土支持土層中,影響強(qiáng)化導(dǎo)排效果的因素的變化規(guī)律,提出所選水平范圍內(nèi)的最佳布置方式。研究表明,將毛細(xì)透排水帶利用在垃圾填埋場(chǎng)封場(chǎng)系統(tǒng)植被層可以顯著強(qiáng)化其雨水導(dǎo)排性能,且封場(chǎng)系統(tǒng)的導(dǎo)排性能越差,毛細(xì)透排水帶的強(qiáng)化導(dǎo)排效果越顯著。因此,利用毛細(xì)透排水帶毛細(xì)、虹吸和水的表面張力等作用強(qiáng)化生活垃圾填埋場(chǎng)封場(chǎng)系統(tǒng)的導(dǎo)排性能在理論上和實(shí)踐中均是可行的,一方面減少了垃圾滲濾液的產(chǎn)生量,另一方面也保護(hù)了填埋堆體的結(jié)構(gòu)安全穩(wěn)定。具有良好的經(jīng)濟(jì)、社會(huì)以及環(huán)境效益。本研究可為填埋場(chǎng)封場(chǎng)系統(tǒng)的導(dǎo)排性能強(qiáng)化提供思路和依據(jù)。
[Abstract]:Poor conductance and discharge after atmospheric rainfall is a major threat to the structural safety of domestic refuse landfill. A large amount of water in the top of landfill is also a potential source for the increase of landfill leachate production. It is an urgent need to strengthen the research on the guiding and discharging performance of the sealing system to ensure the stable and safe operation of the landfill site. In this study, the capillary suction of capillary permeable drainage zone was used to enhance the capacity of soil conductivity and drainage of vegetation, so as to enhance the permeability of landfill sealing site system. On the basis of summarizing the structure of landfill site sealing system and the reason of blockage at home and abroad, this study determines the intensity of atmospheric rainfall by simulated atmospheric rainfall test and single factor analysis. The influence of soil quality and drainage zone height of supporting soil layer, layout density, placement location, whether or not special drainage pipe are set on the effect of strengthening guiding and drainage, the orthogonal test method is used to study sand, silty clay and clay supporting soil. The change law of the factors affecting the effect of strengthening the guide and discharge is proposed, and the optimum arrangement within the selected horizontal range is put forward. The results show that the application of capillary permeable drainage zone in the vegetation layer of landfill site sealing system can significantly enhance the Rain Water guiding and drainage performance, and the worse the sealing field system is, the more significant the enhanced guiding and drainage effect of capillary permeable drainage zone is. Therefore, it is feasible in theory and in practice to use capillary permeability, siphon and surface tension of water to enhance the performance of landfill sealing site system, on the one hand, to reduce the amount of landfill leachate. On the other hand, it also protects the structure safety and stability of the landfill. Good economic, social and environmental benefits. This study can provide the train of thought and basis for strengthening the guiding and discharging performance of landfill sealing system.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：X705

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