新型固化剂在伊犁地区冻融型浅层黄土滑坡中的防治效果研究  

Study on the Prevention and Control Effect of New Curing Agent in Freeze-Thaw Shallow Loess Landslide in Ili Area

作　　者：古丽米热·艾麦提 吕倩俐 张艳阳 史光明 黄军朋 赖润森 杨晓龙 曾册勋 郭千喆 康飞燕 康胜哲 Gulmira∙Amat;Lv Qianli;Zhang Yanyang;Shi Guangming;Huang Junpeng;Lai Runsen;Yang Xiaolong;Zeng Cexun;Guo Qianzhe;Kang Feiyan;Kang Shengzhe(College of Geological and Mining Engineering,Xinjiang University,Urumqi,Xinjiang,830017,China;College of Resources and Earth Sciences,China University of Mining and Technology,Xuzhou,Jiangsu,221116,China)

机构地区：[1]新疆大学地质与矿业工程学院,新疆乌鲁木齐830017 [2]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《新疆地质》2025年第1期149-156,共8页Xinjiang Geology

基　　金：新疆大学2024年国家级大学生创新训练计划项目新型固化剂对冻融型黄土滑坡的抗滑性能改良及机理研究(202410755013);国家自然科学基金伊犁谷地冰雪融水叠加降雨入渗黄土滑坡形成机理与预警判据(42367021);新疆大学2023年国家级大学生创新训练计划项目新疆南疆地区盐渍土溶陷性及盐-冻胀性试验研究(202310755006)共同资助。

摘　　要：新疆伊犁地区因冻融作用产生的浅层黄土滑坡灾害发育强烈且分布广泛,对区域生态平衡及社会经济稳定造成了严重威胁。目前传统的防治方法未充分考虑植被恢复及生态作用的整合。本文运用学科交叉的思路,通过冻融循环试验后的渗透试验、扫描电子显微镜试验(SEM)和植被对照试验,探究新型固化剂(聚丙烯酰胺和纳米二氧化硅)在不同配比下(2∶1、1∶1、0∶1、1∶0、1∶2、0∶0)对黄土水理性质、微观结构和植被生长的影响。结果表明:冻融循环条件下,配比为2∶1时黄土试样渗透系数平均值最大,相较0∶0配比增大了13.04%,渗透系数平均变化量最大且为正值,渗透系数平均变化率相较未改良黄土减小了0.62%;冻融循环作用下,2∶1配比的黄土颗粒最接近等轴,颗粒之间接触面积较大。固化剂的添加并未对植被生长造成影响,反而一定程度上促进了植被生长。综合以上试验结果,聚丙烯酰胺和纳米二氧化硅在2∶1的配比下对伊犁地区黄土的水理性质改良效果最佳。通过引入环保型新型固化剂,为伊犁地区浅层黄土滑坡灾害的防治提供了创新性解决方案,展现出了良好的应用潜力。By introducing a new environmentally friendly curing agent,it provides an innovative solution for the prevention and control of shallow loess landslide disasters in Yili area,showing good application potential.However,the current traditional control methods do not fully consider the integration of vegetation restoration and its ecological effects.Therefore,this paper adopts the idea of interdisciplinary.The effects of new curing agents(polyacrylamide and nano-silica)on loess hydrological properties,microstructure and vegetation growth under different ratios(2∶1,1∶1,0∶1,1∶0,1∶2,0∶0)were studied by means of cross-disciplinary thinking,permeability test,scanning electron microscope(SEM)test and vegetation control test after freezing-thawing cycle test,and the effect of different ratios of new curing agents on loess hydrological properties,microstructure and vegetation growth was studied.The results showed that under the condition of freezing-thawing cycle,the average permeability coefficient of loess sample was the largest when the ratio was 2∶1,which increased by 13.04%compared with 0∶0.The average change of permeability coefficient was the largest and positive,and the average change rate of permeability coefficient was reduced by 0.62%compared with unimproved loess;Under the action of freezing-thawing cycle,the loess particles with 2∶1 ratio were closest to equiaxed,and the contact area between particles was larger.The addition of curing agent did not affect the growth of vegetation,but promoted the growth of vegetation to a certain extent.Based on the above test results,the ratio of polyacrylamide and nano-silica 2∶1 was the best for improving the hydrological properties of the loess in Yili area.By introducing a new environmentally friendly curing agent,it provides an innovative solution for the prevention and control of shallow.

关 键 词：新型固化剂 季节性冻土区 浅层黄土滑坡 伊犁 

分 类 号：P642.22[天文地球—工程地质学] P642.14[天文地球—地质矿产勘探]