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Geotechnical Engineering and Seismic Engineering
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Geotechnical Engineering and Seismic Engineering

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

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 4251

Special Issue Editors

Prof. Dr. Liang Tang

E-Mail Website
Guest Editor
School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
Interests: geodynamics and geoseismic engineering; permafrost and high-speed railway roadbed engineering; transportation geotechnical engineering and subway engineering
Special Issues, Collections and Topics in MDPI journals
Dr. Alexandra Moshou

E-Mail Website
Guest Editor
Department of Electronic Engineering, Hellenic Mediterranean University, 3 Romanou Str., Chalepa, 73133 Chania, Greece
Interests: seismic big data; deep learning; spatial data processing; seismic data processing; earth science informatics; analysis and visualization of earth science data; seismic sequences
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are inviting submissions to the Special Issue on Geotechnical Engineering and Seismic Engineering.

The seismic response of bridge pile foundation in liquefiable soils and associated failure mechanisms is one of the central issues in geotechnical engineering. The seismic response of pile foundation in liquefiable soils and associated failure mechanisms, encompassing pile-soil interaction theory, test method, basic characteristics of liquefiable site, seismic input analysis method. The failure mechanisms involving coupling of structural bending and buckling under combined lateral and vertical loading and its negative influence. A novel simplified analysis method of the seismic response of nonlinear soil-pile-structure system in liquefiable ground. New method to identify and avoid the structural failure. Improving current seismic code for designing bridges in liquefiable ground. Case studies, model and field tests, theoretical method, numerical simulation, and criterion analogy could be adopted to investigate the seismic response of pier of bridges.

In this Special Issue, we invite submissions exploring cutting-edge research and recent advances in the fields of Geotechnical Engineering and Seismic Engineering. Both theoretical and experimental studies are welcome, as well as comprehensive review and survey papers.

Prof. Dr. Liang Tang
Dr. Alexandra Moshou
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

  • liquefaction
  • seismic response
  • dynamic pile-soil-structure interaction
  • simplified analysis method

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Published Papers (3 papers)

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Research

15 pages, 1425 KiB  
Article
Microseism Detection Method in Coal Mine Based on Spatiotemporal Characteristics and Support Vector Regression Algorithm
by Hong Gao, Chaomin Mu and Hui Sun
Appl. Sci. 2023, 13(17), 9917; https://doi.org/10.3390/app13179917 - 1 Sep 2023
Viewed by 762
Abstract
In view of the inconsistency of guided wave energy in distributed acoustic sensing coal mine maps and the difficulty in distinguishing the vibration levels of coal mines, which leads to the poor sensitivity and accuracy of microseism detection, a coal mine microseism detection [...] Read more.
In view of the inconsistency of guided wave energy in distributed acoustic sensing coal mine maps and the difficulty in distinguishing the vibration levels of coal mines, which leads to the poor sensitivity and accuracy of microseism detection, a coal mine microseism detection method based on time–space characteristics and a support vector regression algorithm is proposed to ensure the safety of coal mine operations. The spatiotemporal sliding window was used to collect the coal mine data in real-time, and the continuous attribute discretization algorithm based on entropy was used to discretize the coal mine data, then the data were mapped to different state spaces to build a Markov chain; by calculating the state transition probability matrix and the cross-state probability transition matrix, respectively, the temporal and spatial characteristics of the coal mine microseisms at the target node were extracted. The extracted spatiotemporal characteristics of the coal mine microseisms were used as the input to the particle-swarm-optimization-improved support vector regression model, and the regression solution results of the coal mine microseism detection signals were output. The error penalty factor and kernel function parameters were improved, and the particle swarm optimization algorithm was introduced to optimize the detection results of microseisms in coal mines. The experimental results showed that this method can accurately and detect in real-time the microseisms in coal mines in the mining area, can effectively control the rate of missing detections in the detection process, and can ensure the stability of the overall detection operation. When the inertia weight was set at 0.9 and the number of particles was 45, this method had the highest sensitivity and the best-detection accuracy for microseisms in coal mines. Full article
(This article belongs to the Special Issue Geotechnical Engineering and Seismic Engineering)
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19 pages, 5486 KiB  
Article
Study on the Seismic Effect of the Pebble Soil Site in the Zhongwei Basin
by Shun Yang, Xin Han, Qiyun Lei, Peng Du, Chao Liu and Zeshan Li
Appl. Sci. 2023, 13(1), 243; https://doi.org/10.3390/app13010243 - 25 Dec 2022
Viewed by 1234
Abstract
Based on a large amount of drilling and geophysical exploration work in the Zhongwei Basin, and combined with the collected borehole data of a seismic safety assessment, this paper summarizes and builds 16 typical pebble soil layer calculation models. The effects of the [...] Read more.
Based on a large amount of drilling and geophysical exploration work in the Zhongwei Basin, and combined with the collected borehole data of a seismic safety assessment, this paper summarizes and builds 16 typical pebble soil layer calculation models. The effects of the thickness of the pebble layer, the thickness of the overlying silty clay, the top interface of the pebble layer on the peak acceleration and the response spectrum of the site seismic response were analyzed using the equivalent linearization method of the one-dimensional soil layer seismic response. The analysis results showed that the variation in pebble layer thickness had no obvious effect on the peak acceleration of the ground surface under different inputs; the influence of the pebble layer thickness on the ground acceleration response spectrum was primarily concentrated in the middle/high-frequency band of 0.2–0.6 s. Within this range, the acceleration response spectrum of the site with a 30 m pebble layer thickness was small, and the response spectrum curve showed a “trough” shape with a certain “weak isolation” effect. Under the same pebble layer thickness, the upper ground surface peak acceleration with a silty clay layer thickness increased with the increase in the central basin pebble soil field, where a short cycle of the seismic wave amplification effect was more obvious. The response spectrum peak period points were within 0.1–0.2 s and were influenced by the action of rare earthquakes. Moreover, the response spectrum curve showed a more obvious phenomenon of “twin peaks”, and the second peak point appeared in the period of 0.5–0.7 s. With the increase in the input intensity, the PGA amplification ratio of the pebble-top interface was significantly smaller than that of the site surface; under different intensities of input, the acceleration response spectrum of the pebble-top interface showed a “trough” phenomenon that was lower than the bedrock input at approximately 0.1 s. Under the action of rare ground motion, the acceleration response spectrum curve of the pebble-top interface showed a “double peak” phenomenon, and within 0.24–0.4 s, the spectrum value was lower than the bedrock input, showing an obvious shock absorption and isolation effect. Under the action of an earthquake, the energy of the pebble-top interface was concentrated in the low-frequency range of 1.1–2.2 Hz, and the amplification effect was obvious. In the range of 8–10 Hz, the amplitude was lower than the bedrock input, and the seismic isolation effect was obvious. Full article
(This article belongs to the Special Issue Geotechnical Engineering and Seismic Engineering)
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14 pages, 4702 KiB  
Article
Numerical Analysis of Pillar Stability in Longwall Mining of Two Adjacent Panels of an Inclined Coal Seam
by Mikhail Eremin, Alexey Peryshkin, Gabriel Esterhuizen, Larisa Pavlova and Victor Fryanov
Appl. Sci. 2022, 12(21), 11028; https://doi.org/10.3390/app122111028 - 31 Oct 2022
Cited by 5 | Viewed by 1450
Abstract
Longwall mining is one of the most widespread methods globally. During the preliminary development of the working, the coal seam is sectioned into panels divided by protective pillars. The pillars are necessary for maintaining the service life of underground mines, a highly productive [...] Read more.
Longwall mining is one of the most widespread methods globally. During the preliminary development of the working, the coal seam is sectioned into panels divided by protective pillars. The pillars are necessary for maintaining the service life of underground mines, a highly productive stope, and personnel safety. In this work, we apply the finite-difference continuum damage mechanics approach to modeling the stress–strain evolution of the rock mass during the extraction of two adjacent longwall panels of an inclined seam. A new modification of the damage accumulation kinetic equation is proposed. The numerical-modeling approach accounts for an explicit number of numerous factors affecting the rock mass behavior. These factors are gravity forces, lithology, tectonic stresses, natural discontinuities, geotechnical, and mining parameters. When the model parameters are calibrated against the in situ observations, the results of the numerical-modeling approach provide a reliable basis for a pillar stability assessment. We build a structural model of a rock mass containing an underground working based on a simplified stratigraphy of the Kondomsky deposit, Kuznetsk coal basin, Russia. Based on the results of the numerical modeling, the stability of a pillar is analyzed. A new numerical technique extending the classical approach to the stability analysis is proposed and verified against the field data. Full article
(This article belongs to the Special Issue Geotechnical Engineering and Seismic Engineering)
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