登录
注册
E-alert
登录
注册
E-alert
EFFECT OF SOIL-WATER ION ACTION ON SOIL MECHANICAL BEHAVIOR
-
摘要: 根据地下水离子质量浓度分布的特点，以改变土体强度为目的，对采取的水样和土样进行室内水土化学试验和物理力学试验，并从土水化学的力学效应对土体强度指标的影响效应进行统计分析。研究结果表明:地下水中的Ca2+、HCO 3-、K+和Na+等离子浓度对土体的黏聚力有明显的减弱效应，而Cl-含量对其影响较弱;离子质量浓度对内摩擦角和变形模量的影响弱于对黏聚力的影响，这为增加土体结构物稳定性措施提供一种借鉴。Abstract: According to the distribution character of ion consistency in ground water and the purpose of changing soil strength,samplings of soil and ground water experiments were executed to carry through statistic and analysis of soil strength,which were made up of chemical action of water-soil and mechanics experiments.The results show the weakened effect occurs on soil cohesion with Ca2 +,HCO 3-,K + and Na + consistency change in ground water and Cl-consistency change is very small.Synchronously,the effect of ion consistency on inner friction angle and modulus index is smaller than that on cohesion for above ion.The study provides experience for improving stability of geotechnical construction.
-
Key words:
- ion effect of soil-water /
- statistic analysis /
- soil mechanic behavior /
- strength index
-
佟德生,段文峰,于治源.长春市某建筑基坑支护结构事故原因的分析[J].工程勘察,2009,37(3):18-21. [2] 余志成,施文华.深基坑支护设计与施工[M].北京:中国建筑工业出版社,1997. [3] 杨光华.深基坑支护结构的试用计算方法及其应用[M].北京:地质出版社,2004. [4] 汤连生,张鹏程,王思敬,等.水－ 岩土化学作用与地质灾害防治[J].中国地质灾害与防治学报,1999,10(3):61-69. [5] 马水山,雷俊荣,张保军,等.滑坡体水岩作用机制与变形机理研究[J].长江科学院院报,2005,22(5):37-39. [6] 汤连生,张鹏程,王思敬.水岩化学作用的岩石力学宏观力学效应的试验研究[J].岩石力学与工程学报,2002,21 (4):526－ 531. [7] 龚晓南.高等土力学[M].杭州:浙江大学出版社,1996:33 －34. [8] 张盛宇.土的塑性指数与抗剪强度指标回归方程的建立[J].天津建设科技,2006,16(7):175-176. [9] 王军,曹平,赵延林,等.水土化学作用对土体抗剪强度的影响[J].中南大学学报:自然科学版,2010,41(1):245-250. -
点击查看大图
计量
- 文章访问数: 51
- HTML全文浏览量: 2
- PDF下载量: 73
- 被引次数: 0
下载:
