Feasibility of cone penetration test applied to horizontal directional drilling in continuous boreholes

详细信息    Feasibility of cone penetration test applied to horizontal directional drilling in continuous boreholes

• 出版日期：2002.
• 页数：296 p. :
• 第一责任说明：Renato Viana Clemetino.
• 分类号：a662.23 ; a390
• ISBN：0612685551(ebk.) :

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02h0025739 20111011154453.0 cr un||||||||| 111011s2002 xx ||||f|||d||||||||eng | AAINQ68555 0612685551(ebk.) : CNY371.35 NGL NGL NGL a662.23 ; a390 Clemetino, Renato Viana. Feasibility of cone penetration test applied to horizontal directional drilling in continuous boreholes [electronic resource] / Renato Viana Clemetino. 2002. 296 p. : digital, PDF file. Source: Dissertation Abstracts International, Volume: 63-05, Section: B, page: 2558. ; Adviser: Peter K. Robertson. Thesis (Ph.D.)--University of Alberta (Canada), 2002. Horizontal Directional Drilling (HDD) Technique has a unique characteristic of providing a horizontal borehole with an entry and an exit point. This feature, brought about the idea of developing a logging device based on Cone Penetration Testing (CPT) technology where the penetrometer is pulled back through the borehole rather than pushed ahead of the drill stem. The main objective of this research was to study the feasibility of developing such a logging device and to design, build and field test this novel probe, called the Horizontal Directional Pre-Bored Cone Penetration Test (HD-PB-CPT).;Because of the boundary conditions of the problem, the principal of cavity expansion theory was used to provide a first concept of the ideal probe dimensions. A pilot test with similar boundary condition of the study problem was conducted to validate the theoretical assumptions made. Prototype 1 was then design, constructed and field tested at the University of Alberta field experimental site. To better understand the soil deformation pattern and to eliminate some design problems identified during Prototype 1 field tests, small scale laboratory physical modeling tests were performed. Prototype 2 was then constructed and an electrical resistivity module was also added to the probe to improve identification of soil lithology change and to allow the probe to screen for soil contamination. The field tests of these two prototypes have shown that this new tool has good potential application in geotechnical and geoenvironmental site assessment where conventional vertical logging is not suitable. However, tip and sleeve friction resistance values were lower than those obtained from standard vertical CPTs performed in the same soil. Either further probe modification will be necessary to obtain a closer data match with the standard vertical CPT, or when more HD-PB-CPT data are available changes in existing vertical CPT classification charts can be proposed to better suit the HD-PB-CPT test results. (Abstract shortened by UMI.) Directional drilling. ; Penetrometers. ; Soil penetration test. Electronic books. aeBook. aCN bNGL http://proquest.calis.edu.cn/umi/detail_usmark.jsp?searchword=pub_number%3DAAINQ68555&singlesearch=no&channelid=%CF%B8%C0%C0&record=1 NGL Bs1036 rCNY371.35 ; h1 bs1108