Results 11 to 20 of about 18,103 (261)

Dynamic prediction and influence factors analysis of ground surface settlement during tunnel excavation

open access: yesRock and Soil Mechanics, 2022
The construction of urban subway tunnel inevitably produces disturbance to surrounding rock and causes ground surface settlement. Dynamic prediction of ground surface settlement caused by tunnel excavation is an important method to ensure the safety of ...
JIANG Shuai   +5 more
doaj   +1 more source

Surface Subsidence over a Coastal City Using SBAS-InSAR with Sentinel-1A Data: A Case of Nansha District, China

open access: yesRemote Sensing, 2023
The loss of life and property in economically developed areas due to geological hazards caused by intense ground subsidence is incalculable. As one of the fastest growing areas in the Guangdong-Hong Kong-Macao Greater Bay Area, the study of ground ...
Huanghao Yu   +6 more
doaj   +1 more source

The effect of the additional load on the ground support on the settlement of the surrounding ground [PDF]

open access: yesE3S Web of Conferences, 2021
Based on the existing engineering examples, this paper uses numerical simulation combined with the actual monitoring values on site to study the effect of the additional load on the support and the settlement of the surrounding ground, and the following conclusions are drawn: (1) When the enclosure structure is good, the settlement curve generally ...
Wang Dong   +6 more
openaire   +2 more sources

Spatial Variability of Grouting Layer of Shield Tunnel and Its Effect on Ground Settlement

open access: yesApplied Sciences, 2020
This study aims to investigate the effect of the spatial variability of grouting-layer thickness on ground-surface settlement caused by shield tunneling and to provide a rational prediction method.
Zhongzheng Wang   +2 more
doaj   +1 more source

Control settlement of recharge in ultra-deep excavations under partial block effect of aquifer

open access: yesYantu gongcheng xuebao, 2021
In coastal cities in China, taking Tianjin for an example, the pressure aquifer is rather thick and buried deep. Cutting off all the aquifer will lead to high construction cost.
ZHENG Gang 1, 2, SHI Jian-cheng 2, CHENG Xue-song 1, 2, ZHAO Yue-bin 2, LI Qing-han 2, GAO Qi 3, LIU Bo 3, WANG Shu-xiong 4, MA Ji-shan 4
doaj   +1 more source

Ground subsidence due to the backfill pressure in tunnel boring machine [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2020
In shield tunnel boring machine constructions, backfill pressure affects surface settlement and the stability of other underground structures nearby. Therefore, it is essential to pre-calculate backfill pressure in the design stage.
C.-K. Ahn, S.-W. Lee
doaj   +1 more source

Observed Performance of Highway Embankment over Soft Marine Clay: A Case Study in Wenzhou, China

open access: yesAdvances in Civil Engineering, 2020
This paper presents a case history of observed performance of highway embankment over soft marine clay in Wenzhou, China. During the embankment construction, the changes of ground settlement, ground displacement, and lateral displacement of subsoil with ...
Xia Bian, Jin-Kai Yan, Wei Zhang
doaj   +1 more source

Improved prediction method for ground surface thawing settlement caused by the melting of tunnel horizontal frozen wall

open access: yesSN Applied Sciences, 2021
With the rapid development of urban subway tunnel, artificial ground freezing technology is becoming more and more mature. With the natural thawing of horizontal frozen wall, thawing settlement will occur on stratum due to the thawing of frozen soil and ...
Rongbao Hong, Haibing Cai, Mengkai Li
doaj   +1 more source

Analysis of Ground Movement during Large-Scale Pipe Roof Installation and Artificial Ground Freezing of Gongbei Tunnel

open access: yesAdvances in Civil Engineering, 2021
This paper analyzes the vertical ground movement during large-scale pipe roof installation and artificial ground freezing of Gongbei tunnel of the Hong Kong-Zhuhai-Macau bridge project.
Xiao-qi Zhou   +3 more
doaj   +1 more source

Prediction model and application of three-dimensional ground surface settlement induced by tunnel excavation considering time effect

open access: yes矿业科学学报, 2019
It is difficult to consider the change of settlement along with time by using stochastic medium theory in the settlement prediction process in subway construction. A new settlement-time model is proposed.
Liu Bo, Yang Weihong
doaj   +1 more source

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