New conductive plastic drainage board and its electro-osmosis drainage effect under double-layer horizontal layout
-
摘要: 针对当前电渗排水法存在阳极腐蚀严重,排水设备安装繁琐等问题,提出了一种新型导电塑料排水板。新型导电塑料排水板可以快速装配形成单层或多层水平电渗排水系统,省时省力的同时还解决了电渗过程中的电极腐蚀问题和电渗后期电极与淤泥的脱开问题。以安徽阜阳市骆家沟清淤工程所产生的高含水率疏浚淤泥为研究对象,采用导电塑料排水板进行双层水平电渗脱水模型试验。试验结果表明:该导电塑料排水板的电渗排水性能优良,且双层布置能获得更好的电渗效果。Abstract: In view of the serious anodic corrosion and cumbersome installation of drainage equipment in the current electro-osmotic drainage method, a new type of conductive plastic drainage plate is proposed. The drainage plate can be quickly assembled into a horizontal electroosmotic drainage system, which saves time and solves the problems of electrode corrosion in the electro-osmotic process and the separation of electrode and sludge in the late electro-osmotic process. Taking the high-moisture content dredged sludge produced by Luojiagou dredging project in Fuyang City of Anhui Province as the research object, the double-layer horizontal electro-osmosis dewatering model tests are carried out by using the conductive plastic drainage plate. The test results show that the electro-osmotic drainage performance of the conductive plastic drainage plate is excellent, and the double-layer arrangement can obtain better electro-osmotic effect.
-
-
表 1 水力冲挖淤泥颗粒级配
Table 1 Particle gradation of hydraulic scouring silt
河道 颗粒成分组成/% 0.25~0.075 0.075~0.05 0.05~0.005 <0.005 骆家沟 1.7 15 58.5 24.8 -
[1] 吴松华. 不同形式电渗加固吹填淤泥现场试验研究[J]. 长江科学院院报, 2020, 37(5): 108–112. https://www.cnki.com.cn/Article/CJFDTOTAL-CJKB202005022.htm WU Song-hua. Field test study on different forms of electroosmosis reinforcementof dredger-fill silt[J]. Journal of Yangtze River Scientific Research Institute, 2020, 37(5): 108–112. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-CJKB202005022.htm
[2] 周亚东, 付继宇, 邓安, 等. 真空预压–电渗联合作用下软黏土非线性大变形固结模型[J]. 岩石力学与工程学报, 2019, 38(8): 1677–1685. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201908017.htm ZHOU Ya-dong, FU Ji-yu, DENG An, et al. A nonlinear consolidation model of soft clay under the combination of electroomosis and vacuum preloading[J]. Chinese Journal of Rock Mechanics and Engineering, 2019, 38(8): 1677–1685. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201908017.htm
[3] MOHAMEDELHASSAN E, SHANG J Q. Effects of electrode materials and current intermittence in electro-osmosis[J]. Proceedings of the Institution of Civil Engineers Ground Improvement, 2001, 5(1): 3–11. doi: 10.1680/grim.2001.5.1.3
[4] 陶燕丽, 周建, 龚晓南, 等. 铁和铜电极对电渗效果影响的对比试验研究[J]. 岩土工程学报, 2013, 35(2): 388–394. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201302026.htm TAO Yan-li, ZHOU Jian, GONG Xiao-nan, et al. Comparative experiment on influence of ferrum and cuprum electrodes on electroosmotic effects[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(2): 388–394. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201302026.htm
[5] KANIRAJ S R, HUONG H L, YEE J H S. Electro-osmotic consolidation studies on peat and clayey silt using electric vertical drain[J]. Geotechnical and Geological Engineering, 2011, 29(3): 277–295. doi: 10.1007/s10706-010-9375-8
[6] 孙召花, 高明军, 吴坤, 等. 导电塑料排水板与金属电极电渗对比试验[J]. 科学技术与工程, 2017, 17(20): 219–222. doi: 10.3969/j.issn.1671-1815.2017.20.038 SUN Zhao-hua, GAO Ming-jun, WU Kun, et al. Comparative experiment of electro-osmosis of electric vertical drain and metal electrode[J]. Science Technology and Engineering, 2017, 17(20): 219–222. (in Chinese) doi: 10.3969/j.issn.1671-1815.2017.20.038
[7] 蒋楚生, 司文明, 曾惜, 等. 电渗联合真空预压技术处理高速铁路软土地基[J]. 铁道工程学报, 2019, 36(6): 28–32, 96. doi: 10.3969/j.issn.1006-2106.2019.06.007 JIANG Chu-sheng, SI Wen-ming, ZENG Xi, et al. Research on the treatment of soft soil foundation of a high speed railway by electric-osmosis combined with vacuum preloading technology[J]. Journal of Railway Engineering Society, 2019, 36(6): 28–32, 96. (in Chinese) doi: 10.3969/j.issn.1006-2106.2019.06.007
[8] 易富, 余忠银, 杜常博. EKG用于排水加固细粒尾矿的试验研究[J]. 实验力学, 2020, 35(4): 712–718. https://www.cnki.com.cn/Article/CJFDTOTAL-SYLX202004018.htm YI Fu, YU Zhong-yin, DU Chang-bo. Experimental study on EKG for drainage and reinforcement of fine tailings[J]. Journal of Experimental Mechanics, 2020, 35(4): 712–718. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SYLX202004018.htm
[9] CHIBA T, SHINSHA H, TANI Y. Development of A Vacuum Consolidation Method Employing Horizontal Drains[R]. Tokyo: Japan Dredging and Reclamation Engineering Association, 1992.
[10] 王宁伟, 韩旭, 张雷. 室内水平电渗排水试验研究[J]. 岩土工程技术, 2014, 28(5): 261–264. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGJ201405011.htm WANG Ning-wei, HAN Xu, ZHANG Lei. Experimental study of electro-osmotic test[J]. Geotechnical Engineering Technique, 2014, 28(5): 261–264. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGJ201405011.htm
[11] SHINSHA H, KUMAGAI T. Bulk compression of dredged soils by vacuum consolidation method using horizontal drains[J]. Geotechnical Engineering, 2014, 45(3): 78–85.
[12] 王加勇, 陈庚, 陈永辉, 等. 立体排水-电极联合体处理高含水率废弃土的试验研究[J]. 河北工程大学学报(自然科学版), 2020, 37(4): 13–19. https://www.cnki.com.cn/Article/CJFDTOTAL-HJXU202004003.htm WANG Jia-yong, CHEN Geng, CHEN Yong-hui, et al. Experimental study on the treatment of waste soil with high water content by the combination of solid drainage and electrode[J]. Journal of Hebei University of Engineering (Natural Science Edition), 2020, 37(4): 13–19. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-HJXU202004003.htm
[13] 王柳江, 陈强强, 刘斯宏, 等. 水平排水板真空预压联合电渗处理软黏土模型试验研究[J]. 岩石力学与工程学报, 2020, 39(增刊2): 3516–3525. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2020S2030.htm WANG Liu-jiang, CHEN Qiang-qiang, LIU Si-hong, et al. Model test on treatment of soft clay under combined vacuum preloading with electro-osmosis using prefabricated horizontal drain[J]. Chinese Journal of Rock Mechanics and Engineering, 2020, 39(S2): 3516–3525. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2020S2030.htm
[14] ZHUANG Y F. Large scale soft ground consolidation using electrokinetic geosynthetics[J]. Geotextiles and Geomembranes, 2021, 49(3): 757–770.
[15] 黄学昕, 郑凌逶, 谢新宇. 再生纤维电动土工织物修复污染地基室内模型试验研究[J]. 低温建筑技术, 2021, 43(7): 115–118. https://www.cnki.com.cn/Article/CJFDTOTAL-DRAW202107031.htm HUANG Xue-xin, ZHENG Ling-wei, XIE Xin-yu. Laboratory model test on remediation of contaminated foundation with recycled fiber electric geotextiles[J]. Low Temperature Architecture Technology, 2021, 43(7): 115–118. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DRAW202107031.htm