瞬态面波法在公路软基勘查中的应用研究
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摘要
对公路建设中时常遇见的砂土类软弱路基问题,采用瞬态面波法并结合少量钻孔测试信息,建立面波速度和砂土力学参数的关系模型,可预测勘查区的砂土力学参数的纵横向展布特征和规律。经实践检验,预测结果与实际砂土介质的变化规律基本吻合,表明所建立的关系数学模型基本正确并具有较高的实用性。结果为公路砂土路基分类评价以及软弱路基的勘查提供了一个经济可行的思路和方法。
The weak roadbed in sand soil area is a common problem in the highway construction.Adopting transient surface wave method combining with the test information of some drill holes,the relation model of the interface wave velocity and sandy soil mechanics parameters is built up in thip paper,and the vertical and horizontal distribution characteristic and regulation of the sandy soil mechanics parameters can be predicted in prospecting area.Through the practice checking,the predict result mainly coincides with the variety regulation of the actual sandy soil medium,which indicates that the mathematiced relation model built up in the paper is correct and has higher practicability.The method will provide an economic viable way for prospecting and the classification evaluation of sandy soil in highway roadbed.
The weak roadbed in sand soil area is a common problem in the highway construction.Adopting transient surface wave method combining with the test information of some drill holes,the relation model of the interface wave velocity and sandy soil mechanics parameters is built up in thip paper,and the vertical and horizontal distribution characteristic and regulation of the sandy soil mechanics parameters can be predicted in prospecting area.Through the practice checking,the predict result mainly coincides with the variety regulation of the actual sandy soil medium,which indicates that the mathematiced relation model built up in the paper is correct and has higher practicability.The method will provide an economic viable way for prospecting and the classification evaluation of sandy soil in highway roadbed.
引文
[1]杨成林.瑞雷波勘探[M].北京:地质出版社,1993.
[2]陆基孟.地震勘探原理[M].东营:石油大学出版社,1993.
[3]冯兵,孙渊.工程及水文物探教程[M].西安:陕西人民教育出版社,2003.
[4]曹圣华,杨晓东,朱正坤,等.瑞雷面波法用于软土地基勘察的试验研究[J].河海大学学报(自然科学版),2003,31(4):419-423.
[5]童立元,陈征宙,刘定恩,等.瞬态瑞雷面波勘探技术在公路工程勘察中的应用[J].地质与勘探,2000,36(5):73-75.
[6]杜正涛,刘丽敏,程道伟,等.瑞雷面波勘探技术在第四系分层方面的应用[J].物探与化探,1999,23(4):277-282.
[7]邹喜作.瑞雷波在软土地基处理效果检测中的应用[J].地质找矿论丛,1999,14(2):82-86.
[2]陆基孟.地震勘探原理[M].东营:石油大学出版社,1993.
[3]冯兵,孙渊.工程及水文物探教程[M].西安:陕西人民教育出版社,2003.
[4]曹圣华,杨晓东,朱正坤,等.瑞雷面波法用于软土地基勘察的试验研究[J].河海大学学报(自然科学版),2003,31(4):419-423.
[5]童立元,陈征宙,刘定恩,等.瞬态瑞雷面波勘探技术在公路工程勘察中的应用[J].地质与勘探,2000,36(5):73-75.
[6]杜正涛,刘丽敏,程道伟,等.瑞雷面波勘探技术在第四系分层方面的应用[J].物探与化探,1999,23(4):277-282.
[7]邹喜作.瑞雷波在软土地基处理效果检测中的应用[J].地质找矿论丛,1999,14(2):82-86.
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