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State-of-the-Art Research on the Contributions of Geotechnical Engineering to Environmental...
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State-of-the-Art Research on the Contributions of Geotechnical Engineering to Environmental Protection and Disaster Prevention

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: closed (25 September 2022) | Viewed by 6723

Special Issue Editors

Prof. Dr. Shinya Inazumi

E-Mail Website
Guest Editor
Department of Civil Engineering, Shibaura Institute of Technology, Tokyo 1358548, Japan
Interests: geotechnical engineering; gel; environmental protection; disaster prevention; waste recycle
Special Issues, Collections and Topics in MDPI journals
Dr. Jim S. Shiau

E-Mail Website
Guest Editor
School of Engineering, University of Southern Queensland, Toowoomba, QLD 4350, Australia
Interests: numerical modelling for geotechnical construction, geotechnical engineering
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The goal of the geotechnical engineering is to manage and maintain geo-structures and social infrastructures in harmony with the natural and social environments, thereby allowing future human beings to inherit and develop sustainable urban infrastructures and urban environments.

State-of-the-art geotechnical engineering is the process of conducting research activities that can contribute to the creation and development of geo-structures and social infrastructures that can deal with various problems that may occur today or in the future of our living earth.

This Special Issue calls papers about various challenging aspects of research related to geotechnical engineering that are being implemented with the goals of environmental protection and disaster prevention as described above.

Prof. Dr. Shinya Inazumi
Dr. Jim S. Shiau
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • geotechnical engineering
  • environmental protection
  • disaster prevention
  • waste recycle
  • management

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Published Papers (3 papers)

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Research

13 pages, 3485 KiB  
Article
Potential of Computer-Aided Engineering in the Design of Ground-Improvement Technologies
by Sudip Shakya, Shinya Inazumi and Supakij Nontananandh
Appl. Sci. 2022, 12(19), 9675; https://doi.org/10.3390/app12199675 - 26 Sep 2022
Cited by 8 | Viewed by 2394
Abstract
The progress status of jet-grouting construction during the construction phase is difficult to verify and even after the completion of construction, it can be verified only by empirical methods. This study attempted to recreate a realistic simulation result of the middle-pressure jet-grouting method [...] Read more.
The progress status of jet-grouting construction during the construction phase is difficult to verify and even after the completion of construction, it can be verified only by empirical methods. This study attempted to recreate a realistic simulation result of the middle-pressure jet-grouting method by establishing a computer-aided engineering (CAE) system from the planning/design stage of the ground model and verifying the validity of the construction process after the model was analyzed by the moving particle semi-implicit (MPS) method. The governing parameters for the ground were determined by the MPS simulation of the unconfined compression test. The construction simulation was analyzed and the results were validated by visual confirmation of the related phenomena, such as the soil-improved body formation and mud discharge. To verify the accuracy of the mud discharge phenomenon, three different probe regions were set above the model ground and the amount of mud discharge generated in each region was computed before drawing an overall conclusion of the study. A soil-improvement body of approximately 0.38 m3 was observed to have formed at the end of the study and the highest mud discharge particle number measured, for instance, was 896. This study is expected to serve as a guideline for further studies on simulation-based research. Full article
(This article belongs to the Special Issue State-of-the-Art Research on the Contributions of Geotechnical Engineering to Environmental Protection and Disaster Prevention)
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12 pages, 3271 KiB  
Article
Evaluation of Land Subsidence during Groundwater Recovery
by Sutasinee Intui, Shinya Inazumi and Suttisak Soralump
Appl. Sci. 2022, 12(15), 7904; https://doi.org/10.3390/app12157904 - 6 Aug 2022
Cited by 7 | Viewed by 2207
Abstract
The Chao Phraya River basin is located in the central area of Thailand, which experiences many land subsidence issues due to groundwater pumping. The Department of Groundwater Resources (DGR) has been recording data on the changes in the groundwater level due to water [...] Read more.
The Chao Phraya River basin is located in the central area of Thailand, which experiences many land subsidence issues due to groundwater pumping. The Department of Groundwater Resources (DGR) has been recording data on the changes in the groundwater level due to water pumping since 1960 until the present time. In 1997, the DGR issued a law regulating the use of groundwater due to its effect on the changes in the groundwater level. The changing of the groundwater level was separated into two periods. The first period is the high groundwater pumping ratio that led to a rapid decrease in the groundwater level of about 27 m from the ground surface. After the DGR issued the new law in the second period, the pumping ratio decreased and the groundwater level increased. The groundwater level tends to reach the ground surface. In the past, the groundwater level decrease was affected by the land subsidence. Therefore, this study focused on calculating and learning the behavior of the soil surface displacement during groundwater level recovery to the ground surface in Bangkok, Thailand. We obtained the 3D soil profiles adopted from eight boreholes from the Department of Public Works and Town & Country Planning. The soil profile data were verified by monitoring the data from the Department of Groundwater Resources (DGR) in the same area. The soil layers of the 3D soil profile were analyzed to calculate the soil surface displacement based on the consolidation theory of Terzaghi. We also examined the displacement behavior of the clay layers during the groundwater level recovery to the ground surface by assuming that the soil layers below the groundwater level do not settle or rebound. The surface displacement results showed that the surface ends to move upward or rebound, which is a similar trend to that reported in previous research. All the considered locations showed similar soil surface displacement trends. The soil displacement ratio is 0.21 to 0.53 cm/year during the groundwater recovery. Full article
(This article belongs to the Special Issue State-of-the-Art Research on the Contributions of Geotechnical Engineering to Environmental Protection and Disaster Prevention)
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12 pages, 4576 KiB  
Article
Influence of Perforated Soils on Installation of New Piles
by Supakij Nontananandh, Shuichi Kuwahara, Ken-ichi Shishido and Shinya Inazumi
Appl. Sci. 2022, 12(15), 7712; https://doi.org/10.3390/app12157712 - 31 Jul 2022
Cited by 5 | Viewed by 1515
Abstract
In recent years, there has been an increasing demand to replace ancient structures. The removal of such structures also involves the removal of the existing piles that supported the structures, and the backfilling of the pulling-out holes that formed during the removal. However, [...] Read more.
In recent years, there has been an increasing demand to replace ancient structures. The removal of such structures also involves the removal of the existing piles that supported the structures, and the backfilling of the pulling-out holes that formed during the removal. However, there are no standard guidelines for the backfilling of pulling-out holes. At present, therefore, each owner or contractor must determine the material and the construction method to use for backfilling. This results in a difference between the mechanical properties of the original soil and those of the soil that has been backfilled, namely, the soil on which a newly built structure will be constructed. In this study, it was assumed that a new pile would be installed on a perforated soil (that is, the soil left after removing the existing piles) where the mechanical properties differ between the original soil and the backfilled soil. The behavior of the new pile, when installed on the boundary of a soil between two types of mechanical properties, was evaluated by a three-dimensional linear elastic analysis. When the new pile was installed at the boundary between the two types of soil with different mechanical properties, most of the new pile was inclined to the soil side where the N value was relatively small. However, the inclination of the new pile was able to be suppressed by increasing the distance from the boundary between the two types of soil. Full article
(This article belongs to the Special Issue State-of-the-Art Research on the Contributions of Geotechnical Engineering to Environmental Protection and Disaster Prevention)
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