Field Evaluation of Fracture Control in Tunnel Blasting

McKown, A. F.; Fourney, W. L.; Sperry, P. E.; Thompson, D. E.; Haley & Aldrich

doi:10.21949/1527131

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Field Evaluation of Fracture Control in Tunnel Blasting

1979-12-01
By McKown, A. F. ; Fourney, W. L. ; Sperry, P. E. ; ...

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English

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Creators:

McKown, A. F. ; Fourney, W. L. ; Sperry, P. E. ; Thompson, D. E.

McKown, A. F. ; Fourney, W. L. ; Sperry, P. E. ; Thompson, D. E. Less -
Corporate Creators:

Haley & Aldrich
Corporate Contributors:

John A. Volpe National Transportation Systems Center (U.S.) ; United States. Urban Mass Transportation Administration

John A. Volpe National Transportation Systems Center (U.S.) ; United States. Urban Mass Transportation Administration Less -
Subject/TRT Terms:

[+]

Boreholes Construction Sites Control Cost Effectiveness Evaluation Excavation Excavation And Tunneling Explosive Excavation Field Tests Fracture Mechanics Geological Events Physical Properties Presplitting (Blasting) Rock Fracture Rocks Subways Tunneling
Publication/ Report Number:

DOT-TSC-UMTA-79-44;UMTA-MA-06-0100-7914
DOI:

https://doi.org/10.21949/1527131
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Urban Mass Transportation Administration
Abstract:

The objective of this research was to implement fracture control procedures in a tunnel project and to assess the practicality, advantages, disadvantages, performance and cost effectiveness of fracture control methods against smooth blasting procedures. This report describes the procedures and results of field tests of fracture control--a procedure for achieving fracture plane control in tunnel blasting. It describes and discusses the project and site geology, the theory and applications of fracture control blasting, and the experimental procedures used. The report provides conclusions and recommendations for future research. The procedures and results of an experimental smooth blasting round utilizing milli-second delay detonating caps are described in Appendix A.
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PDF
Collection(s):

Volpe Center
Main Document Checksum:

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urn:sha256:eda6df3bbda290285a0140f05a54387797b6a135ef5f63981ee4ac66e9b2cde2
Download URL:

https://rosap.ntl.bts.gov/view/dot/11699/dot_11699_DS1.pdf
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Field Evaluation of Fracture Control in Tunnel Blasting

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