Ground Settlement of High-Permeability Sand Layer Induced by Shield Tunneling: A Case Study under the Guidance of DBN

During the shield construction of Harbin Subway Line No. 3 Project, the average ground settlement exceeds the warning value. In order to find the cause of settlement and improve it, this paper establishes a settlement prediction model to analyse the potential influencing factors based on the Deep Belief Network (DBN) and calculated the correlation degree between influencing factors and settlement through sensitivity analysis. It was found that the permeability coefficients of layer and cutter head torque are the main factors affecting settlement. Then, corresponding muck improvement measures were made according to the analysis of the layer conditions, which successfully reduced the permeability and shear strength of the muck, thereby controlling the surface settlement value within the warning range. The research results in this paper illustrate the applicability and robustness of DBN in tunnel engineering, and the related research ideas can be applied to other projects.

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Semianalytical Solution and Parameters Sensitivity Analysis of Shallow Shield Tunneling-Induced Ground Settlement

Advances in Materials Science and Engineering ◽

10.1155/2017/3748658 ◽

2017 ◽

Vol 2017 ◽

pp. 1-8

Author(s):

Jifeng Liu ◽

Huizhi Zhang

Keyword(s):

Stress Field ◽

Influence Factors ◽

Analytic Solutions ◽

Ground Settlement ◽

Shield Tunneling ◽

Circular Tunnel ◽

Factors Analysis ◽

Nonuniform Stress Field

The influence of boundary soil properties on tunneling-induced ground settlement is generally not considered in current analytic solutions, and the hypothesis of equal initial stress in vertical and horizontal makes the application of the above solutions limited. Based on the homogeneous half-plane hypothesis, by defining the boundary condition according to the ground loss pattern in shallow tunnel, and with the use of Mohr-Coulomb plastic yielding criteria and classic Lame and Kiersch elastic equations by separating the nonuniform stress field to uniform and single-direction stress field, a semiempirical solution for ground settlement induced by single shallow circular tunnel is presented and sensitivity to the ground parameters is analyzed. The methods of settlement control are offered by influence factors analysis of semiempirical solution. A case study in Beijing Metro tunnel shows that the semiempirical solution agrees well with the in situ measured results.

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Important Factors Affecting Rural Tourists’ Aesthetic Experience: A Case Study of Zoumatang Village in Ningbo

Sustainability ◽

10.3390/su13147594 ◽

2021 ◽

Vol 13 (14) ◽

pp. 7594

Author(s):

Weiwei Zhou ◽

Li-Yu Chen ◽

Rung-Jiun Chou

Keyword(s):

Aesthetic Experience ◽

Evaluation Model ◽

Critical Factor ◽

Development Planning ◽

Integrated Marketing ◽

Factors Affecting ◽

Tourist Satisfaction ◽

Improvement Measures ◽

The Aesthetic

China’s countryside is rich in cultural heritage. It is an important engine for rural development and revitalization. How to improve the tourists’ satisfaction with their aesthetic experience, raise the revisit rate and loyalty, and provide new methods and ideas for re-understanding the tourism experience is a topic worth discussing. This study chose Zoumatang Village in Ningbo, China, as the research target, and explored the important factors affecting tourists’ satisfaction with the aesthetic experience of their visit. Through a literature review and eight experts applying the Delphi method, this paper develops a framework of important criteria for the Zoumatang Village aesthetic experience. It then ranks their importance and causal relationships using the DEMATEL-based ANP method. It also combines 16 important factors for tourist satisfaction to explore improvement measures. The research results show that pleasure is the most critical factor of the aesthetic experience offered by Zoumatang Village with interactivity, variety, associability, sociability, and stewardship as factors that need to be improved given that naturalness lies at the heart of tourists’ aesthetic experience. The evaluation model of this study can provide a reference for improving the aesthetic experience of Zoumatang Village in particular, and the research methods and ideas for rural tourism development planning and integrated marketing in general. The findings can be used when investigating aesthetic experience, questionnaire making, and evaluation optimization related to tourism.

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Analysis on Permeability of High Permeability Layer-Penetration Oil Influencing Factors

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.580-583.2524 ◽

2014 ◽

Vol 580-583 ◽

pp. 2524-2527

Author(s):

Yu Fang

Keyword(s):

Influencing Factors ◽

Type Material ◽

Rigid Base ◽

High Permeability ◽

Factors Affecting ◽

Permeable Layer ◽

Emulsified Asphalt ◽

Material Requirements

This article from the permeability condition, half-rigid base type, material requirements, penetrating agent and emulsifier choice, permeation resistance, etc., through the analysis of the factors affecting the permeability of permeable layer of emulsified asphalt, and guided by the factors above, we developed and prepared a new high permeability permeate layer emulsification asphalt, the tests showed that it has good permeability.

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Factors Affecting The Sustainability Of The Asphalt Roads: A Case Study Of Irbid Inner Ring Road, Jordan

Indian Journal Of Applied Research ◽

10.15373/2249555x/feb2012/34 ◽

2011 ◽

Vol 1 (5) ◽

pp. 93-94

Author(s):

Eng. Nasr Ahmad Eng. Nasr Ahmad ◽

◽

Dr. Mihai Iliescu

Keyword(s):

Factors Affecting ◽

Ring Road

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Factors Affecting Financial Literacy of Vietnamese Adults: A Case Study for Hanoi and Nghe An

VNU Journal of Science Economics and Business ◽

10.25073/2588-1108/vnueab.4084 ◽

2017 ◽

Vol 33 (2) ◽

Author(s):

Tue Nguyen Dang

Keyword(s):

Higher Education ◽

Multiple Regression ◽

Financial Literacy ◽

Urban Areas ◽

Logistic Models ◽

Factors Affecting ◽

Financial Behaviors ◽

Financial Decisions ◽

Literacy Level

This research examines the factors affecting the financial literacy of Vietnamese adults. Using a sample of 266 observations of adults in 2 big cities in Vietnam (Hanoi and Vinh in Nghe An Province), the author evaluates the literacy level of adults in these urban areas. The financial literacy of the interviewed people is low. The multiple regression results show that lower financial literacy levels associate with higher age and married status and higher financial literacy levels associate with higher education, more family members, the person making financial decisions and the person attending a useful financial course. This research also explores the association between financial literacy and financial behaviors of individuals employing logistic models. It is found that higher financial literacy associates with less probability of overspending and higher probability of saving money and careful spending. Higher financial literacy is also found to associate with higher probability of opening a savings account and making various investments.

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