Zhuoying Tan, Meifeng Cai, Z. Q. Yue, L. G. Tham,  and C. F. Lee, Instrumented borehole drilling for interface identification in intricate weathered granite ground engineering, J. Univ. Sci. Technol. Beijing, 14(2007), No. 3, pp. 195-199. https://doi.org/10.1016/S1005-8850(07)60038-3
Cite this article as:
Zhuoying Tan, Meifeng Cai, Z. Q. Yue, L. G. Tham,  and C. F. Lee, Instrumented borehole drilling for interface identification in intricate weathered granite ground engineering, J. Univ. Sci. Technol. Beijing, 14(2007), No. 3, pp. 195-199. https://doi.org/10.1016/S1005-8850(07)60038-3
Mineral

Instrumented borehole drilling for interface identification in intricate weathered granite ground engineering

+ Author Affiliations
  • Corresponding author:

    Zhuoying Tan    E-mail: markzhy_tan@163.com

  • Received: 28 July 2006
  • The successful application in drilling for HK simple weathered granite foundation has revealed its further use in instrumented drilling system as a ground investigation tool in the detection of other lithology formations, geohazards, underground water, and boundary of orebody. To expand the further use and test the accuracy in identification of formation, an R-20 rotary-hydraulic drill rig was instrumented with a digital drilling process monitoring system (DPM) for drilling in an intricate decomposed granite site. In this test ground, the boreholes revealed that the weathered granite alternately changes between moderate and strong. The qualitative and quantitative analysis of the penetrating parameters, indicates the effective thrust force, rotary speed, flushing pressure, penetrating rate, and displacement of the bit fluctuate at ground interfaces. It shows that the parameters get a good response with the change of rock strength at the interfaces, which can reveal the change of the intricate granite formation. Besides, a variable-slope method has been established, for identification of dominative and subsidiary interfaces in the granite site. The result from a t-test shows that the confidence of the instrumented drilling system in identification of the geotechnical interfaces is up to 99%.
  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Share Article

    Article Metrics

    Article Views(217) PDF Downloads(11) Cited by()
    Proportional views

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return