Results 91 to 100 of about 248,542 (278)
Influence of the Tunnel Shape on Shotcrete Lining Stresses [PDF]
, 2011 Tunnel excavation is frequently carried out in rock masses by the drill and blast method and the final shape of the tunnel boundary can be irregular due to overbreaks.
Fabrizio Barpi +3 more
core +1 more source
, 2023 To address the challenges posed by rapid urban and population growth, China has undertaken extensive urban subway construction. In order to explore the mechanical characteristics of subway tunnel construction in urban shallow karst environment, based on ...
He, Xuhu +9 more
core +1 more source
Deep Underground Science and Engineering, EarlyView.In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu +6 more
wiley +1 more source
Study on the vibration effect on operation subway induced by blasting of an adjacent cross tunnel and the reducing vibration techniques [PDF]
, 2013 The Hongshan road tunnels in Nanjing cross up the metro Line 1 tunnel, the closest distance between Hongshan road tunnels and subway tunnels is only 4.14 m.
Chong Ji +4 more
core +2 more sources
E3S Web of Conferences, 2018 In the extra-large cross-section urban subway underground station projects, the key problem is to choose the appropriate excavation method and grasp the mechanical behavior of the surrounding rock after excavation.
Wu Bo, Huang Wei, Zhao Yong Bo
doaj +1 more source
Study on the Excavation Method of Cable Tunnel on Existing Subway Tunnel
DEStech Transactions on Computer Science and Engineering, 2017 The paper describes the impact on the existing subway tunnel when using different method excavate the cable tunnel which is upon the subway tunnel. In this paper we use three-dimensional finite element modeling method to establish Soil - Cable Tunnel - Subway Tunnel model. Using numerical simulation method to analysis three different excavation working
YUZHUO JIA, JING YU
openaire +2 more sources
Deep Underground Science and Engineering, EarlyView.The fused data extracted from the distributed monitoring system as the data basis, combined with dynamic geological data, are imported into a deep learning model. As the geological conditions of mining and excavation change, the risk of water inrush at the working face is retrieved in real time.
Yongjie Li +4 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley +1 more source
Seismic responses of rectangular subway tunnels in a clayey ground
PLOS ONE, 2018 Observations from past earthquakes have shown that subway tunnels can suffer severe damage or excessive deformation due to seismic shaking. This study presents the results of finite element analyses on subway tunnels installed in normally consolidated clay deposits subjected to far-field ground motions.
Lei Zhang, Yong Liu
openaire +4 more sources
Measurement of Distributed Antenna Systems at 2.4 GHz in a Realistic Subway Tunnel Environment. [PDF]
, 2012 Accurate characterization of the radio channel in tunnels is of great importance for new signaling and train control communications systems. To model this environment, measurements have been taken at 2.4 GHz in a real environment in Madrid subway.
Ke Guan +7 more
core +1 more source