Provision of new vehicle tunnel, adjacent to Blackwall Tunnel under River Thames, involves driving tunnel 2844 ft long, 800 ft through water-bearing gravel fill; pretreatment of ground will make it possible to open up main tunnel from pilots; diagram shows longitudinal section. (See also Engineering v 191 n 4951 Mar 10 1961 p 349-50)
Driving tunnel just under river
Compressed Air Hydraulics
Compressed Air and Hydraulics ; 26 , n 298
1961
2 pages
Article (Journal)
English
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