نتایج جستجو برای: maximum surface settlement

تعداد نتایج: 919999  

Journal: :int. journal of mining & geo-engineering 2013
amir hossein haghi mohammad reza asef ali taheri mohsen mohkam

ground settlement is often the most serious concern when tunneling under an old city with numerous historic monuments. a successful engineering design under these conditions would require getting the most out of the ground strength parameters and avoiding any weakening maneuver throughout the operation. knowing that surface settlement is highly affected by tunneling parameters in epb shield tun...

Journal: :int. journal of mining & geo-engineering 2015
roohallah bolghonabai mohammad farouq hossaini mohammad mohammadi ali nazem

among various practical measures used for restriction of the ground surface settlement in such tunnels driven in soft ground, selection of an appropriate excavation method plays a significant role. in this paper, employing suggested diagram by yu & chern, corresponding values of niayesh tunnel has been inserted into the diagram. later, two excavation methods namely: central diaphragm and si...

Journal: :international journal of mining and geo-engineering 0
v b maji iit madras abite adugna govt of ethiopia

tunnelling through cities underlain by soft soil, commonly associated with soil movement around the tunnels and subsequent surface settlement. the predication of ground movement during the tunnelling and optimum support pressure could be based on analytical, empirical or the numerical methods. the commonly used earth pressure balance (epb) tunneling machines, uses the excavated soil in a pressu...

Journal: :Applied sciences 2022

The leakage of an enclosure structure will cause abnormal changes in the seepage flow field, which turn can lead to deformation and affect surrounding geotechnical body. In this paper, a fiber-optic temperature measurement system is used detect location points station Qingdao subway during open pit excavation, variation field caused by obtained numerical calculation measurement. Then, simulatio...

Journal: :E3S web of conferences 2021

Based on the existing engineering examples, this paper uses numerical simulation combined with actual monitoring values site to study effect of additional load support and settlement surrounding ground, following conclusions are drawn: (1) When enclosure structure is good, curve generally assumes a “spoon shape”. As distance from foundation pit increases, surface first increases then decreases....

Journal: :Applied and environmental microbiology 2007
Yi-Li Huang Sergey Dobretsov Hairong Xiong Pei-Yuan Qian

The effects of culture conditions and chloramphenicol treatment on the induction of the marine bacterium Pseudoalteromonas spongiae to larval settlement of Hydroides elegans were investigated. The results showed that P. spongiae cells grown in the medium containing both yeast extract and peptone (YP-grown P. spongiae) was highly inductive to larval settlement, whereas P. spongiae cells grown in...

2012
Morten L. Bech Antoine Martin James McAndrews

he U.S. dollar clearing and settlement system was little noticed during the recent financial crisis, mainly because it performed dependably, processing record volumes and values of trades made in stressed financial markets. Its successful operation was in part a result of the collaborative efforts undertaken by stakeholders over decades to improve risk management and operational resiliency. Und...

Journal: :JCP 2014
Shuoben Bi Yin Shi Lianghu Lu Xiaowen Zeng

Based on the data of Jiangzhai one-stage settlement sites archaeological excavation data, this paper applies three-dimensional visualization technology of virtual reality to scenario building. In order to enhance the fidelity of prehistoric settlement sites to reproduce the virtual system simulation results in the system design and implementation process, it essential to build plenty of the nat...

Journal: :Applied sciences 2022

In recent years, shield tunneling has shown many advantages with the development of underground rail traffic. Geological exploration plays a significant role in tunnel engineering, and detailed geological results can guide successful construction tunnel. This research relies on super large-diameter construction, using microtremor technology to collect data onsite. Combined comparative analysis ...

Journal: :Proceedings. Biological sciences 2012
Murray P Cox Michael G Nelson Meryanne K Tumonggor François-X Ricaut Herawati Sudoyo

The settlement of Madagascar is one of the most unusual, and least understood, episodes in human prehistory. Madagascar was one of the last landmasses to be reached by people, and despite the island's location just off the east coast of Africa, evidence from genetics, language and culture all attests that it was settled jointly by Africans, and more surprisingly, Indonesians. Nevertheless, extr...

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