An experimental study of the ecological restoration of rock slope based on polyurethane composite-based materials

YU Yongxiang; HAO Shefeng; JIANG Bo; LIU Jin; LI Ming; LI Wei; SONG Zezhuo

doi:10.16030/j.cnki.issn.1000-3665.202004036

2021 Vol. 48, No. 2

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Article navigation > Hydrogeology & Engineering Geology > 2021 > 48(2): 174-181

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YU Yongxiang, HAO Shefeng, JIANG Bo, LIU Jin, LI Ming, LI Wei, SONG Zezhuo. An experimental study of the ecological restoration of rock slope based on polyurethane composite-based materials[J]. Hydrogeology & Engineering Geology, 2021, 48(2): 174-181. doi: 10.16030/j.cnki.issn.1000-3665.202004036

Citation:

YU Yongxiang, HAO Shefeng, JIANG Bo, LIU Jin, LI Ming, LI Wei, SONG Zezhuo. An experimental study of the ecological restoration of rock slope based on polyurethane composite-based materials[J]. Hydrogeology & Engineering Geology, 2021, 48(2): 174-181. doi: 10.16030/j.cnki.issn.1000-3665.202004036

An experimental study of the ecological restoration of rock slope based on polyurethane composite-based materials

1.
Technology Innovation Center of Land (Cultivated Land) Ecological Monitoring and Restoration Project of the Ministry of Natural Resources, Nanjing, Jiangsu　210018, China
2.
Geological Survey Institute of Jiangsu Province, Nanjing, Jiangsu　210018, China
3.
School of Earth Sciences and Engineering, Hohai University, Nanjing, Jiangsu　210098, China

Received Date: 08 April 2020

Revised Date: 10 May 2020

Publish Date: 15 March 2021

Abstract

Abstract

In view of the problems existing in the ecological restoration of rock slope, such as the slide of the soil substrate, the serious loss of the surface soil and the poor growth of vegetation, etc., in this paper, polyurethane organic polymer materials and soil are used to form a polyurethane composite substrate. The strength, erosion resistance and vegetation growth of the composite substrate are studied through laboratory tests. In addition, a suitable site is chosen for field test to verify the effectiveness of the polyurethane composite substrate. The specific research results show that the existence of the polyurethane organic polymer has a significant effect on the strength and anti-scour of the composite substrate, and with the increasing concentration of the polyurethane organic polymer, the strength and anti-scour of the polyurethane composite substrate also increase. Compared with the specimens not added, the strength of 1% polyurethane composite substrate is 113.63 kPa, with an increasing rate of about 95.45%. The peak scouring amount of 20% polyurethane composite substrate is 28.8 g, with a decreasing rate of about 71.2%. The polyurethane organic polymer can effectively improve the germination and growth of vegetation seeds. When the concentration of polyurethane increases from 0% to 10%, the germination rate of seeds increases from 12% to 68%. When the concentration of the polyurethane organic polymer is too high, it will inhibit the germination and growth of vegetation. The polyurethane composite substrate can effectively repair the rock slope, and the effect is significant. The research results may provide some references for the ecological protection of rock slope, and are of important theoretical and practical significance.
- rock slope /
- polyurethane /
- composite-based material /
- external soil /
- ecological restoration

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References

[1]	何建军. 岩质边坡生态防护技术研究[D]. 长沙: 中南大学, 2005. Google Scholar HE Jianjun. Study on ecological protection technology of rock slope[D]. Changsha: Central South University, 2005. (in Chinese with English abstract) Google Scholar
[2]	钟春欣, 张玮, 王树仁. 三维植被网加筋草皮坡面土壤侵蚀试验研究[J]. 河海大学学报(自然科学版),2007,35(3):258 − 261. [ZHONG Chunxin, ZHANG Wei, WANG Shuren. Experimental research on soil erosion of turf slope reinforced by 3D vegetation net[J]. Journal of Hohai University (Natural Sciences),2007,35(3):258 − 261. (in Chinese with English abstract) Google Scholar
[3]	杨翔, 江真, 阳长江, 等. 岩石边坡肋柱植生袋+喷播植草联合植生技术的应用[J]. 重庆建筑,2015,14(7):52 − 54. [YANG Xiang, JIANG Zhen, YANG Changjiang, et al. Application of combined planting and growing technology of vegetation bag and spray seeding for rock slope[J]. Chongqing Architecture,2015,14(7):52 − 54. (in Chinese with English abstract) doi: 10.3969/j.issn.1671-9107.2015.07.052 CrossRef Google Scholar
[4]	白丽华. 黄土高原地区管道水工保护及综合治理模式研究[D]. 咸阳: 西北农林科技大学, 2009. Google Scholar BAI Lihua. Pipeline protection and comprehensive management of hydraulic model in loess plateau[D]. Xianyang: Northwest A&F University, 2009. (in Chinese with English abstract) Google Scholar
[5]	杜娟. 客土喷播施工法在日本的应用与发展[J]. 公路,2000,45(7):72 − 73. [DU Juan. The application and development of the construction method of spraying and sowing of the guest soil in Japan[J]. Highway,2000,45(7):72 − 73. (in Chinese with English abstract) doi: 10.3969/j.issn.0451-0712.2000.07.020 CrossRef Google Scholar
[6]	李旭光, 毛文碧, 徐福有. 日本的公路边坡绿化与防护—1994年赴日本考察报告[J]. 公路交通科技,1995,12(2):59 − 64. [LI Xuguang, MAO Wenbi, XU Fuyou. Greening and protection of highway slopes in Japan: A report on a visit to Japan in 1994[J]. Journal of Highway and Transportation Research and Development,1995,12(2):59 − 64. (in Chinese) Google Scholar
[7]	孔令伟, 薛春晓, 苏凤, 等. 不同建植技术对露天煤矿排土场生态修复效果的影响及评价[J]. 水土保持研究,2017,24(1):187 − 193. [KONG Lingwei, XUE Chunxiao, SU Feng, et al. Evalution and effect of different construction techniques on the ecological restoration of the stackpile in opencast coal mine[J]. Research of Soil and Water Conservation,2017,24(1):187 − 193. (in Chinese with English abstract) Google Scholar
[8]	YANG Y, YANG J Y, ZHAO T N, et al. Ecological restoration of highway slope by covering with straw-mat and seeding with grass–legume mixture[J]. Ecological Engineering,2016,90:68 − 76. doi: 10.1016/j.ecoleng.2016.01.052 CrossRef Google Scholar
[9]	李锐, 黄永刚, 胡筱敏. 一种植入型生态护坡的制备工艺及施工方法[J]. 东北大学学报(自然科学版),2018,39(8):1201 − 1204. [LI Rui, HUANG Yonggang, HU Xiaomin. A preparation technology and construction method of implantable ecological slope protection[J]. Journal of Northeastern University (Natural Science),2018,39(8):1201 − 1204. (in Chinese with English abstract) doi: 10.12068/j.issn.1005-3026.2018.08.027 CrossRef Google Scholar
[10]	MERLIN G, DI-GIOIA L, GODDON C. Comparative study of the capacity of germination and of adhesion of various hydrocolloids used for revegetalization by hydroseeding[J]. Land Degradation & Development,1999,10(1):21 − 34. Google Scholar
[11]	ROWE E C, WILLIAMSON J C, JONES D L, et al. Initial tree establishment on blocky quarry waste ameliorated with hydrogel or slate processing fines[J]. Journal of Environmental Quality,2005,34(3):994 − 1003. doi: 10.2134/jeq2004.0287 CrossRef Google Scholar
[12]	章梦涛, 邱金淡, 颜冬. 客土喷播在边坡生态修复与防护中的应用[J]. 中国水土保持科学,2004,2(3):10 − 12. [ZHANG Mengtao, QIU Jindan, YAN Dong. Application of external-soil spray seeding technique to slopes natural eco-restoration and protection[J]. Science of Soil and Water Conservation,2004,2(3):10 − 12. (in Chinese with English abstract) doi: 10.3969/j.issn.1672-3007.2004.03.003 CrossRef Google Scholar
[13]	陈意昌, 巫清志, 张俊斌, 等. 崩塌地喷植基材不同配方对种子发芽的影响[J]. 福建农业学报,2013,28(11):1099 − 1105. [CHEN Yichang, WU Qingzhi, ZHANG Junbin, et al. The cement and mushroom waste compost of different vegetation materials with hydroseeding for seed germination on landslide[J]. Fujian Journal of Agricultural Sciences,2013,28(11):1099 − 1105. (in Chinese with English abstract) doi: 10.3969/j.issn.1008-0384.2013.11.007 CrossRef Google Scholar
[14]	GAO G J, YUAN J G, HAN R H, et al. Characteristics of the optimum combination of synthetic soils by plant and soil properties used for rock slope restoration[J]. Ecological Engineering,2007,30(4):303 − 311. doi: 10.1016/j.ecoleng.2007.01.011 CrossRef Google Scholar
[15]	LATIFI N, MEEHAN C, ABD MAJID M Z, et al. Strengthening montmorillonitic and kaolinitic clays using a calcium-based non-traditional additive: A micro-level study[J]. Applied Clay Science,2016,132/133:182 − 193. doi: 10.1016/j.clay.2016.06.004 CrossRef Google Scholar
[16]	MARTO A, LATIFI N, EISAZADEH A. Effect of non-traditional additives on engineering and microstructural characteristics of laterite soil[J]. Arabian Journal for Science and Engineering,2014,39(10):6949 − 6958. doi: 10.1007/s13369-014-1286-1 CrossRef Google Scholar
[17]	HONG S H, LEE E Y. Restoration of eroded coastal sand dunes using plant and soil-conditioner mixture[J]. International Biodeterioration & Biodegradation,2016,113:161 − 168. Google Scholar
[18]	LATIFI N, HORPIBULSUK S, MEEHAN C L, et al. Xanthan gum biopolymer: an eco-friendly additive for stabilization of tropical organic peat[J]. Environmental Earth Sciences,2016,75(9):1 − 10. Google Scholar
[19]	王银梅, 韩文峰, 谌文武. 新型高分子固化材料与水泥加固黄土力学性能对比研究[J]. 岩土力学,2004,25(11):1761 − 1765. [WANG Yinmei, HAN Wenfeng, CHEN Wenwu. Research on comparison between mechanical behaviors of loess solidified with new polymer material and cement[J]. Rock and Soil Mechanics,2004,25(11):1761 − 1765. (in Chinese with English abstract) doi: 10.3969/j.issn.1000-7598.2004.11.017 CrossRef Google Scholar
[20]	REZAEIMALEK S, HUANG J, BIN-SHAFIQUE S. Evaluation of curing method and mix design of a moisture activated polymer for sand stabilization[J]. Construction and Building Materials,2017,146:210 − 220. doi: 10.1016/j.conbuildmat.2017.04.093 CrossRef Google Scholar
[21]	LIU J, BAI Y X, SONG Z Z, et al. Evaluation of strength properties of sand modified with organic polymers[J]. Polymers,2018,10(3):287. doi: 10.3390/polym10030287 CrossRef Google Scholar
[22]	中华人民共和国水利部. 土工试验方法标准: GB/T 50123—1999[S]. 北京: 中国计划出版社, 1999. Google Scholar Ministry of Water Resources of the People’s Republic of China. Standard for Soil Test Method: GB/T 50123—1999[S]. Beijing: China Planning Press, 1999. (in Chinese) Google Scholar