Future Evening Meetings

The BTS holds monthly evening meetings from September to June, generally on the third Thursday of the month. Unless otherwise stated, the meetings are at the Institution of Civil Engineers (ICE) with the lecture starting at 6pm. Additional meetings are arranged by the BTS Young Members, by regional groups and as joint meetings with other societies. Click on the calendar icon to place this meeting in your Outlook calendar and click on the download button for a copy of the flyer.

04/04/2019

BTSYM April Meeting: Ottawa Light Rail

The confederation line in Ottawa comprises 15 stations and stops; its centrepiece is a 2.5km long tunnel with three underground stations below downtown Ottawa. The mined construction method for the stations was chosen in order to minimise the impact to the surface. The underground stations are located directly adjacent to existing, sensitive and sometimes historic buildings requiring detailed studies of risks during construction and risk mitigation measures. This presentation will look at the detail behind the design and subsequent construction of three large caverns at shallow depth and twin track running tunnels in rock.

Speaker(s)

Thomas Schwind, Technical Director, Dr. Sauer & Partners
18/04/2019

BTS April Meeting: Harding Prize

16/05/2019

BTS AGM and BTS May Meeting: The Brunel Museum's Original Thames Tunnel Drawings, What They Reveal

This meeting will look at the collection of original Thames Tunnel drawings. In the Autumn of 2017 the drawings, held by a branch of the Brunel family, came up for auction and were acquired by the Brunel Museum, Rotherhithe. They cover the period when Marc Isambard Brunel was developing and executing (with the help of his son Isambard Kingdom Brunel) the construction of his tunnel under the River Thames, the first in the world under a navigable waterway. They reveal how his ideas started and evolved, pulling in and then discarding other contemporary inventions; how he won the conviction of his shareholders, then won them over, time and time again; how his audacious self-confidence and patience was challenged from all directions yet was finally rewarded. His achievement gave others the confidence to tunnel in soft grounds everywhere and laid the foundations for urban Metro systems throughout the world. Pictorially and conceptually, it seems just a few short steps from the Brunel tunnelling shield to a modern tunnel boring machine.

06/06/2019

BTSYM June Meeting: Ground Movement due to Circular Shaft Construction in London Clay

Until recently, there were few well-documented case studies of circular shafts, which made it difficult to estimate reliable ground movements arising from such construction. Careful interpretation of field observations of ground surface settlement during construction of 27 circular shafts built for Crossrail, London Power Tunnels and Northern Line Extension, together with centrifuge model testing in the geotechnical centrifuge at Cambridge University, provides new insight into the ground movements arising from circular shaft construction. Dr Faustin and Professor Lord Mair present normalised charts to estimate the settlement due to circular shaft construction in London Clay with due consideration for different shaft geometries and construction methods.

Speaker(s)

Dr Njemelie Faustin, AECOM; Professor Lord Robert Mair CBE, University of Cambridge
20/06/2019

BTS June Meeting: Tideway TBM Deliveries

Speaker(s)

Yueyang Zhao, Wentworth House