双液注浆加固边坡的应用研究
摘要
边坡失稳问题历来都是郴州地区工程建设的一个难题。近年来,由于郴州市大规模的城市建设,新建、改建了多条公路,道路两侧形成了大量的工程边坡,在这期间边坡失稳问题屡屡出现。据统计,郴州市相山大道沿线的7个大型边坡,有6个出现了不同程度的失稳问题,严重影响道路工程的正常施工。边坡失稳问题的频发,说明现有边坡设计与施工的思路与方法,并不完全适应于郴州地区特有的工程地质条件,需针对郴州的工程地质条件,提出新的边坡支护设计与施工的思路和方法。
本文在对国内外已有的相关文献进行综合分析的基础上,论述了注浆加固边坡的发展现状及存在的问题。通过对水泥水玻璃浆液的性能进行分析研究,得出浆液的基本性能,认为水泥水玻璃浆液早期强度高、对边坡土体扰动小,适合于郴州地区的边坡支护工程。利用PLAXIS对双液注浆加固边坡进行模拟,分析了双液注浆加固边坡的机理、效果及适用范围。在郴州市相山大道路堑边坡的设计与施工中,对郴州特殊岩土进行室内试验,分析其基本性质,结合现场具体地质情况,将双液注浆法运用到边坡加固中,取得了很好的效果,并对某边坡加固工程进行模拟分析。根据现场实际注浆施工方法、经验,结合以往的双液注浆经验,提出了双液注浆加固边坡设计与施工的要点。
Slope has always been a difficult point of Chenzhou's construction projects. In recent years, city constructions happened on a large scale, a lot of highways have been build and rebuild. As a result of this, a multitude of lengineering slope appeared, and problems with slopes repeatedly occurred. On the basis of statistical work, six slopes have instability problems of different degrees of the seven the large -scale slopes in Chenzhou's Xiangshan street. It seriously influenced the normal progress. The high proportion of instability illustrates that existing design of slopes, ideas and methods of construction can be improved in sloving slope in Chenzhou. We should propose a new idea and a new method in connection with Chenzhou's geological conditions, which are adequate for slope retaining and construction in Chenzhou.
With the overall analysising of the domestic and international referrence, this paper summarized the present state and existing problems of grunting reinforcement. Based on analysising of the performance of the the cement-sodium silicate, it thinks the cement-sodium silicate has early high strength,, so it fits to the slope chenzhou bracing engineering. In this paper, the big, numerical simulation software P1AXIS is used to simulate grunting reinforcement. Through considering the model's stability, the paper studied the mechanism, function and application of the binary slurry in reinforceing. When designing and constructing the highway outs of Chenzhou's Xiangshan street, we did indoor experiment on special rock, studied its nature. And we uesd bi-slurry grouting method in reinforceing according to specific geology, and got a very good out come. At last, based on the actual methods and expriences of grouting, the paperput forward some points in designing and constructing double-grouting.
本文在对国内外已有的相关文献进行综合分析的基础上,论述了注浆加固边坡的发展现状及存在的问题。通过对水泥水玻璃浆液的性能进行分析研究,得出浆液的基本性能,认为水泥水玻璃浆液早期强度高、对边坡土体扰动小,适合于郴州地区的边坡支护工程。利用PLAXIS对双液注浆加固边坡进行模拟,分析了双液注浆加固边坡的机理、效果及适用范围。在郴州市相山大道路堑边坡的设计与施工中,对郴州特殊岩土进行室内试验,分析其基本性质,结合现场具体地质情况,将双液注浆法运用到边坡加固中,取得了很好的效果,并对某边坡加固工程进行模拟分析。根据现场实际注浆施工方法、经验,结合以往的双液注浆经验,提出了双液注浆加固边坡设计与施工的要点。
Slope has always been a difficult point of Chenzhou's construction projects. In recent years, city constructions happened on a large scale, a lot of highways have been build and rebuild. As a result of this, a multitude of lengineering slope appeared, and problems with slopes repeatedly occurred. On the basis of statistical work, six slopes have instability problems of different degrees of the seven the large -scale slopes in Chenzhou's Xiangshan street. It seriously influenced the normal progress. The high proportion of instability illustrates that existing design of slopes, ideas and methods of construction can be improved in sloving slope in Chenzhou. We should propose a new idea and a new method in connection with Chenzhou's geological conditions, which are adequate for slope retaining and construction in Chenzhou.
With the overall analysising of the domestic and international referrence, this paper summarized the present state and existing problems of grunting reinforcement. Based on analysising of the performance of the the cement-sodium silicate, it thinks the cement-sodium silicate has early high strength,, so it fits to the slope chenzhou bracing engineering. In this paper, the big, numerical simulation software P1AXIS is used to simulate grunting reinforcement. Through considering the model's stability, the paper studied the mechanism, function and application of the binary slurry in reinforceing. When designing and constructing the highway outs of Chenzhou's Xiangshan street, we did indoor experiment on special rock, studied its nature. And we uesd bi-slurry grouting method in reinforceing according to specific geology, and got a very good out come. At last, based on the actual methods and expriences of grouting, the paperput forward some points in designing and constructing double-grouting.
引文
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[2]黄春香,简文彬.软土特性与水泥—水玻璃加固土效应的试验.福州大学学报(自然科学版),2001.29(3),91～95
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[4]程鉴基.水泥—水玻璃在软土灌浆工程中的应用.路基工程,1996.(6),10～15
[5]Raymond S. Rollings, J. Pete Burkes, Marian P. Rollings. Sulfate Attack on Cement-Stabilized Sand. Journal of Geotechnical and Geoenvironmental Engineering.1995, (5),8～9
[6]王国际.注浆技术理论与实践.徐州：中国矿业大学出版社,2000.3
[7]邝健政,昝月稳,王杰,等.岩土注浆理论与工程实例.北京：科学出版社,2001.4
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[9]曹南山.复合注浆法在桩基加固中的应用研究：[硕士学位论文].长沙：中南大学,2006
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[12]管泽黄,刘坤鹏.灌浆法对地面建筑桩基的加固方案探讨.铁道工程学报.2001(2),130～133
[13]戴安邦,陈荣三,柳海澄,等.硅酸及其盐的研究.化学学报,1982,40(8)767～769
[14]程鉴基.珠江三角洲软土地基水泥—水玻璃防渗固结灌浆处理初步研究.岩石力学与工程学报,1995,14(3),179～186
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[16]简文彬,吴铭炳,唐宗鑫,等.水泥—水玻璃加固软土研究.建筑技术开发,2002,29(2),30～33
[17]Peter persoff, et al. Effect of Dilltion and Contaminants on Sand Grouted with Colloidal Silica. Journal of Geotechnical and Gecenvironmental Enginering,1999,461～469
[18]J.Chen, A. Anandarajah, H. Inyang. Pore Fluid Properties and Compressibility of Kao linite, Journal of Geotechnical and Geoenvironmental Engineering,2000,798
[19]刘华荣.CS浆液配制比例及注浆堵水效果.地下空间,2004,24(4),489～491
[20]闫勇,郑秀华.水泥—水玻璃浆液性能试验研究.水文地质工程地质,2004,(1),71～81
[21]杨晓华,俞永华.水泥—水玻璃双液注浆在黄土隧道施工中的应用.中国公路学报,2004,17(2),68～72
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[24]丁锐.水玻璃与粘土矿物之间表面反应的实验研究.岩土工程学报,1999,21(3),334～337
[25]李宁,张平,闫建文.灌浆的数值仿真分析模型探讨.岩石力学与工程学报,2002,21(3),326～330
[26]Nichol S C, Goodings D J. Physical model testing of compaction grouting in cohesionless soil[J]. Journal of Geotechnical and Geoenvironmental Engineering,2000,126 (9),848～852
[27]史秀志,林杭.注浆效应对边坡稳定性的影响.中南大学学报(自然科学版),2009,(40),492～497
[28]刘润,闫玥等.浅层压力注浆法加固风化岩质边坡及加固效果分析.天津大学学报,2006,39(5),523～536
[29]陈志敏,赵德安,李双洋等.黄土及饱和黄土中水泥水玻璃注浆效果评价.兰州交通大学学报(自然科学版),2004,23(6),48～51
[30]杨殿栋.双液注浆固结法处理隧洞塌方技术.甘肃水利水电技术,2000,36(3),194～197
[31]Kikuchi K, lgari T, Mito Y, etc. In situ experimental studies on improvement of rock masses by grouting treatment. Int. J. Rock Mech. Min. Sci,1997,34(3,4),594～605
[32]Lee J S, Bang C S, Mok Y J, etc. Numerical and experimental analysis of penetrateion grouting in jointed rock masses. International journal of Rock Mechanics & mining Siciences,2000,37,1027～1037
[33]王广国,杜明芳,苗兴城.压密注浆机理研究及效果检验.岩石力学与工程学报,2000,19(5),670～673
[34]Zettler A H, Poisel G S. Behavior of visco-plastic fluids in narrowjoints with non-parallel investigation of a rock grouting process. In:Hans Peter rossmanith eds. Mechanics of Jointed and Faulted Rock. Rotterdam:A. A. Balkema,1990.450～458
[35]曾应斌译.多级扩底灌注桩的应用.建筑技术,1986,(4),46～49
[36]张可能,田庆余,邓飞跃等.土柱试验研究粘土固化注浆帷幕的阻滞性能.中南大学学报,2004,35(3),473～477
[37]高大钊.岩土工程的回顾与前瞻.北京：人民交通出版社,2001.111～115
[38]李宁,张平,闫建文等.灌浆的数值仿真分析模型探讨.岩石力学与工程学报,2002,21(3),326～330
[39]Nichol S C, Goodings D J. Physical model testing of compaction grouting in cohesionless soil. Journal of Geotechnical and Geoenvironmental Engineering,2000,126 (9),848～852
[40]许万忠,彭振斌,胡毅等.岩体边坡锚注加固模拟试验研究.中国铁道科学,2006,27(4),6～10
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