| 钻孔灌注桩施工过程中垃圾渗滤液对地下水的污染分析 |
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| 引用本文： | 杨明亮,姚海林,冯其林,骆行文.钻孔灌注桩施工过程中垃圾渗滤液对地下水的污染分析[J].岩土力学,2005,26(4):586-590. |
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| 作者姓名： | 杨明亮 姚海林 冯其林 骆行文 |
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| 作者单位： | 1. 中国科学院武汉岩土力学研究所,武汉,430071
2. 武汉市环境卫生科学研究设计院,武汉,430015 |
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| 基金项目： | 湖北环境岩土工程重点实验室赞助(No.T000305) |
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| 摘 要： | 采用大直径钻孔灌注桩时，施工时会破坏现有垃圾填埋场的防渗体系，且渗滤液将对地下水造成一定程度的污染。通过对基桩施工过程中渗滤液污染传输过程以及特征进行分析，提出了包括全护筒支护、膨润土泥浆护壁以及减少钻孔成孔至灌注混凝土的问隔时间等控制污染的主要措施，建立了基桩施工过程中钻孔泥浆浆液的损失模型以及渗滤液传输到地水下中的污染物质浓度的计算模型。根据某一具体施工条件进行估算，预测了地下水中污染物质浓度以及污染程度。最后，提出了垃圾填埋场内钻孔灌注桩的施工工艺以及施工注意事项。
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| 关 键 词： | 垃圾渗滤液 污染 分析 钻孔灌注桩 施工 |
| 文章编号： | 1000-7598-(2005)04-0586-05 |
| 收稿时间： | 2004-06-02 |
| 修稿时间： | 2004年6月2日 |
Research on groundwater pollution brought out by leachate of municipal refuse in bored pile construction |
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| YANG Ming-liang,YAO Hai-lin,HENG Qi-ling,LUO Xing-wen.Research on groundwater pollution brought out by leachate of municipal refuse in bored pile construction[J].Rock and Soil Mechanics,2005,26(4):586-590. |
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| Authors: | YANG Ming-liang YAO Hai-lin HENG Qi-ling LUO Xing-wen |
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| Institution: | 1.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Wuhan Environmental Sanitation Scientific Research & Design Institute, Wuhan 430015, China |
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| Abstract: | If the large diameter bored pile is adopted in foundation, the current leakproof system of municipal refuse landfill must be damaged, as a result, groundwater will be polluted by the leachate. Based on analyzing the process of pollutants transmission in construction, we put forward major pollution-controlled measures including whole steel tube timbering to refuse layer from top to bottom, protection on bore with bentonite mud, and reduction of interval time between bore ending and concrete grouting beginning, the loss model of slurry in bore and the calculation model of pollutant concentration brought by leachate diffusion in groundwater. Once the pollutant concentration is calculated for given constructional condition, we can forecast the pollutant concentration in groundwater and polluted degree of groundwater. The construction process of bored pile and the important construction matters needing attention are presented at last. |
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| Keywords: | refuse leachate pollution research bored pile construction |
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