Experiment of Slurry Shield Tunnel Recycling Waste Sand in Sand-Pebble Layer

2014 ◽  
Vol 919-921 ◽  
pp. 1104-1109
Author(s):  
Chen Rui Pang ◽  
Xin Wen
Keyword(s):  
Fine Sand ◽  
The Other ◽  
Shield Tunnel ◽  
Tunnel Construction ◽  
Sand Layer ◽  
Large Space ◽  
City Environment ◽  
Slurry Shield ◽  
Sand Source ◽  
Waste Soil

Waste soil progressing in shield tunnel construction should occupy large space, on the other hand, do harm to city environment. If the waste sand in silt and fine sand layer can be used as sand source of synchronous grouting, it will bring benefits for the enterprise and society. In indoor experiment, we select waste sand in different layers, sieved as sand source, then use the waste sand to produce slurry and compare their strength with the construction slurry’s. The study found, sieved waste sand in silt and fine sand layer can be used as sand source for making synchronous grouting slurry.

Experiment of Shield Synchronized Grouting Slurry Using Waste Sand in Sand Layer

2014 ◽  
Vol 638-640 ◽  
pp. 1600-1605 ◽  
Author(s):  
Ting Wang
Keyword(s):  
Fly Ash ◽  
Processing Method ◽  
Silty Sand ◽  
Sand Layer ◽  
Slurry Shield ◽  
Sand Source

when slurry shield drives in fine silty sand layer, the waste sand consists of a large amount of fine silty sand, it will wastes a lot of money if the waste sand is buried.In laboratory, we use the waste sand as the sand source of shield synchronized grouting, studying on the feasibility of the processing method and slurry properties. The results showed that the sieving waste sand in fine silty sand layer can be used as the sand source of shield synchronized grouting, it is a better way to increase the strength of slurry by increasing the ratio of fly ash for the slurry used the waste sand as sand source.

Reuse of Discharged Soil from Slurry Shield Tunnel Construction as Synchronous Grouting Material

2022 ◽  
Vol 148 (2) ◽  
Author(s):  
Cong Zhang ◽  
Kui Chen ◽  
Junsheng Yang ◽  
Jinyang Fu ◽  
Shuying Wang ◽  
...  
Keyword(s):  
Shield Tunnel ◽  
Tunnel Construction ◽  
Grouting Material ◽  
Slurry Shield

Automatic Detection of the Grout Layer of Metro Tunnel by GPR

2014 ◽  
Vol 556-562 ◽  
pp. 2719-2722
Author(s):  
Cun Chang Qin ◽  
Hui Lin Zhou ◽  
Qi Ming Yu ◽  
Xi Yuan
Keyword(s):  
Ground Penetrating Radar ◽  
Automatic Detection ◽  
The Other ◽  
Shield Tunnel ◽  
Jiangxi Province ◽  
Tunnel Construction ◽  
Term Basis ◽  
Metro Tunnel ◽  
Ground Penetrating

The grout behind the lining segments have a powerful influence on the long-term basis in shield tunnel construction in gravel sand and round gravel layers. Grouting layer detection in the shield construction is important. Two aspects are usually be used to evaluate the effectiveness of the grout treatment, one is the thickness of the Grouting layer and the other is to determine the presence and distribution of any damage in grouting layer. This study reports on the applications of the ground penetrating radar (GPR) and associated work carried out on Nanchang Metro line 1, Jiangxi province of China. After raw data preprocessing the results of the radar image are used to evaluate the thickness and hidden trouble of the grout layer automatically.

Key Construction Technologies for Large River-Crossing Slurry Shield Tunnel: Case Study

2021 ◽  
Vol 34 (2) ◽  
pp. 04020118
Author(s):  
Song Zhou ◽  
Guan-Lin Ye ◽  
Lei Han ◽  
Wang Jian-Hua
Keyword(s):  
Large River ◽  
Shield Tunnel ◽  
Slurry Shield

Impact of Double-O-Tube Shield Tunnel Construction on Grillage Beams Foundation Frame Building

2011 ◽  
Vol 71-78 ◽  
pp. 32-36 ◽  
Author(s):  
Xin Jiang Wei ◽  
Jie Hong ◽  
Gang Wei
Keyword(s):  
Principal Stress ◽  
Differential Settlement ◽  
Shield Tunnel ◽  
Tunnel Construction ◽  
Foundation Settlement ◽  
Ground Settlement ◽  
Shield Tunneling ◽  
Frame Building ◽  
Shield Machine ◽  
The Impact

Considering the interaction of building-soil-tunnel, the grillage beams foundation frame building vertical crossed by Double-O-Tube (DOT) shield tunnel was simulated by 3D MIDAS/ GTS software, and the impact of construction on the building was analyzed. The results show that: the ground settlement trough caused by DOT shield tunnel can be fitted by peck formula; during the passage of the shield tunneling through the building, the settlement of the building increased and settlement trough was wilder; the settlement was stable and had a little rebound when shield machine already passed the building; with the increase of driving distance, the first principal stress P1 increased and then was stable; with the increase of L, the shape of foundation settlement curve changed, and the maximum differential settlement between columns increased but was small.

Continuous Belt Mucking Technology of China Railway Tunnel Construction

2012 ◽  
Vol 268-270 ◽  
pp. 664-672
Author(s):  
Ya Ting Sun ◽  
Zhi Rong Mei ◽  
Jun Wei Zhang
Keyword(s):  
Conservation Policy ◽  
The Other ◽  
Tunnel Construction ◽  
Frozen Ground ◽  
Railway Tunnel ◽  
Scheme Design ◽  
Construction Methods ◽  
Comprehensive Benefit ◽  
Equipment Configuration ◽  
Blasting Method

The conventional mucking system of tunnel construction in China has a series of deficiencies and stubborn problems. Tunnel mucking technologies matched with different tunnel construction methods have been analyzed systematically and the continuous belt mucking methodology which is appropriated with drilling-blasting method was presented. The continuous belt mucking technology includes mucking scheme design and mucking equipment configuration. Compared with the conventional mucking methods, the comprehensive benefit can be fully demonstrated by the new continuous belt mucking system. On the other hand, the predominance on environmental protection of the continuous belt mucking technoloty matches up with the conservation policy. The technology would be widely applied in long tunnels and tunnels embedded in frozen ground and located in bitter cold plateau. The economic benifis and contribution to society of continuous belt mucking technology would be remarkable.

scholarly journals Observations of Ground Movements during Tunnel Construction by Slurry Shield Method at the Docklands Light Railway Lewisham Extension—East London

1999 ◽  
Vol 39 (3) ◽  
pp. 99-112 ◽  
Author(s):  
Tadashi Sugiyama ◽  
Toshiyuki Hagiwara ◽  
Toshi Nomoto ◽  
Masaaki Nomoto ◽  
Yutaka Ano ◽  
...  
Keyword(s):  
Tunnel Construction ◽  
Ground Movements ◽  
Slurry Shield

Preliminary Ideas of the Metro Station Constructed by Shield Tunneling Method Combined with Prefabricated Method

2014 ◽  
Vol 580-583 ◽  
pp. 1013-1018 ◽  
Author(s):  
Hui Feng Su ◽  
Wei Ning Liu ◽  
Fu Chun Liu
Keyword(s):  
The Other ◽  
Shield Tunnel ◽  
Spring Stiffness ◽  
Underground Engineering ◽  
Shield Tunneling ◽  
Metro Station ◽  
Key Technology ◽  
Tunneling Method ◽  
Assembly Technology ◽  
Northeast Of China

Confronting with the difficulties of the construction metro station in the Northeast of China, a new idea of shield method combined prefabricated method is put forward. In the paper the research status of the underground engineering precast assembly technology was analyzed and classified firstly. The method of single round interval shield combined with open-cut (or covered excavation) prefabricated sections and on the basis of shield tunnel to build single arch station is especially worth studying and promotion. Then the key prefabricate theory needing to deal with such as how to calculating the spring stiffness and so forth of the calculating model. The key technology such as joint formation, waterproof and the other of shield method combined with prefabricated method was discussed.

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