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1. Mechanical and microscopic properties of soil according to the rate of increase in pore water pressure

Author:
Zhao Duan; Zhen-Yan Li; Yan-Bin Wu; Bing Niu; Rong-Jian Shen
Source:
Soil & tillage research 2023 v.225 pp. 105530
ISSN:
0167-1987
Subject:
liquefaction,   etc   ; clay; deformation; electron microscopy; fractal dimensions; loess; loess soils; macropores; micropores; research; seepage; silt loam soils; soil erosion; tillage; China;     Show all 15 Subjects
Abstract:
... Increases in pore water pressure affect the effective stress state of loess soil, resulting in deformation and even soil erosion. However, it is still unclear how the mechanical behaviours and microstructures of soil are influenced by the rate of increase in pore water pressure (RIPWP). To better understand the mechanical failure process and properties of soil under different RIPWPs, a series of c ...
DOI:
10.1016/j.still.2022.105530

2. CO2 precooled dual phase expander refrigeration cycles for offshore and small-scale LNG production: Energy, exergy, and economic evaluation

Author:
Muhammad Abdul Qyyum; Ahmad Naquash; Noman Raza Sial; Moonyong Lee
Source:
Energy 2023 v.262 pp. 125378
ISSN:
0360-5442
Subject:
liquefaction,   etc   ; algorithms; carbon dioxide; economic evaluation; economic investment; energy conservation; energy efficiency; ethane; exergy; liquefied natural gas; nitrogen; precooling; propane; refrigeration; specific energy;     Show all 15 Subjects
Abstract:
... Small-scale liquefied natural gas (LNG) processes have gained considerable attention owing to the development of offshore natural gas (NG) reserves. Low energy efficiency and high process costs are the major challenges associated with small-scale LNG processes. In this study, to reduce energy consumption and improve process economics, a dual-phase expander-based process assisted by carbon dioxide ...
DOI:
10.1016/j.energy.2022.125378

3. Experimental study on the mechanism of sand boils and associated settlements due to soil liquefaction in loose sand

Author:
Chi-Chin Tsai; Wei-Chun Lin; Min-Chien Chu; Chung-Chi Chi
Source:
Engineering geology 2022 v.306 pp. 106708
ISSN:
0013-7952
Subject:
soil liquefaction,   etc   ; sand; subsidence;     Show all 3 Subjects
Abstract:
... Sand boils are a recognized phenomenon associated with soil liquefaction. However, the exact conditions required to produce sand boils remain unclear, and sand boil-induced settlement is difficult to quantify. The mechanism of sand boils and associated settlements due to soil liquefaction is investigated in this study using model testing. Loose saturated sand deposit is made in a transparent acryl ...
DOI:
10.1016/j.enggeo.2022.106708

4. Numerical investigation of non-cohesive seabed response around a mono-pile by crossing wave-current

Author:
Jie Lin; Ya-kun Guo
Source:
Water Science and Engineering 2022 v.15 no.1 pp. 57-68
ISSN:
1674-2370
Subject:
liquefaction,   etc   ; mathematical models; water;     Show all 3 Subjects
Abstract:
... The interaction between waves and currents in the ocean often complicates the flow field around structures. In this study, a three-dimensional integrated numerical model was established to investigate the seabed response and liquefaction around a mono-pile under different wave–current interaction angles. In the present model, the Reynolds-averaged Navier–Stokes equations were used to simulate the ...
DOI:
10.1016/j.wse.2021.12.008

5. Multi-objective thermo-economic optimization of Collins cycle

Author:
Shuhang Chen; Dongli Liu; Sizhuo Li; Zhihua Gan; Min Qiu
Source:
Energy 2022 v.239 pp. 122269
ISSN:
0360-5442
Subject:
liquefaction,   etc   ; energy; heat; helium;     Show all 4 Subjects
Abstract:
... Many large scientific projects are emerging worldwide with the development of high energy physics nowadays. The indispensable subsystem, helium cryo-plants for such projects require extremely high energy consumption and total annual cost (TAC). In order to reduce energy consumption and TAC, multi-objective thermo-economic optimization that adopted non-dominated sorting genetic algorithm-II (NSGA-I ...
DOI:
10.1016/j.energy.2021.122269

6. Nonlinear site response at liquefiable sites: Insights from downhole seismic observations

Author:
Weiwei Zhan; Qiushi Chen
Source:
Engineering geology 2022 v.301 pp. 106610
ISSN:
0013-7952
Subject:
liquefaction,   etc   ; earthquakes; geophysics; soil;     Show all 4 Subjects
Abstract:
... The nonlinear behavior of shallow soil plays an important role in modifying surface ground motions. We analyze the nonlinear site response at liquefiable sites using the compiled long-term ground motion data (ranging from 1992 to 2020 with over 2000 earthquake events) at four high-quality downhole arrays that have liquefied during at least one earthquake. Two nonlinear event parameters, the percen ...
DOI:
10.1016/j.enggeo.2022.106610

7. Episodic movement of a submarine landslide complex driven by dynamic loading during earthquakes

Author:
J.M. Carey; J.J. Mountjoy; G.J. Crutchley; D.N. Petley; C.F. Holden; Y. Kaneko; K. Huhn
Source:
Geomorphology 2022 v.408 pp. 108247
ISSN:
0169-555X
Subject:
liquefaction,   etc   ; coasts; landslides; New Zealand;     Show all 4 Subjects
Abstract:
... Although subaqueous slopes on active continental margins are subject to a variety of failure styles, their movement mechanisms during earthquakes remain poorly constrained. A primary explanation is that few submarine landslides have been directly sampled for detailed investigation. We have conducted a series of dynamic shear experiments on samples recovered from the base of the Tuaheni Landslide C ...
DOI:
10.1016/j.geomorph.2022.108247

8. Experiments on the Sinking of Marine Pipelines on Clayey Soils

Author:
Edgar Mendoza; María G. Neves; Cristina Afonso; Rodolfo Silva; André Ramos; Miguel Losada
Source:
Water 2022 v.14 no.5 pp. -
ISSN:
2073-4441
Subject:
soil liquefaction,   etc   ; sediments; water; water content;     Show all 4 Subjects
Abstract:
... An experimental study was carried out to investigate seabed-pipeline interactions with regard to soil liquefaction. For a soil with a high proportion (30 to 60%) of fine sediment, four groups of tests were configured to reproduce soil liquefaction around pipelines for different initial pipe depths, pipe densities and wave conditions (wave height and period). The study focused on verifying the theo ...
DOI:
10.3390/w14050704

9. Liquefaction prediction with robust machine learning algorithms (SVM, RF, and XGBoost) supported by genetic algorithm-based feature selection and parameter optimization from the perspective of data processing

Author:
Selçuk Demir; Emrehan Kutluğ Şahin
Source:
Environmental earth sciences 2022 v.81 no.18 pp. 459
ISSN:
1866-6280
Subject:
soil liquefaction,   etc   ; algorithms; geophysics; models; prediction;     Show all 5 Subjects
Abstract:
... Liquefaction prediction is an important issue in the seismic design of engineering structures, and research on this topic has been continuing in current literature using different methods, including experimental, numerical, or soft computing. In this paper, three robust machine learning (ML) algorithms are applied to predict soil liquefaction using a set of 411 shear wave velocity case records. Th ...
DOI:
10.1007/s12665-022-10578-4

10. The critical states of saturated loess soils

Author:
Ling Xu; Chongyang Gao; Lu Zuo; Ke Liu; Luowen Li
Source:
Engineering geology 2022 v.307 pp. 106776
ISSN:
0013-7952
Subject:
liquefaction,   etc   ; loess; plasticity; soil mechanics; China;     Show all 5 Subjects
Abstract:
... This paper presents an experimental investigation on eleven loess soils retrieved from NW China to explore the influence of grading and age on soil mechanics. There are overall consistent characteristics in stress-strain relationship and stress paths for the loess tested though detailed property depends on the combination of vᵢ and p0'. The critical state parameters are quantitatively analyzed aga ...
DOI:
10.1016/j.enggeo.2022.106776

11. 8th century coastal uplift in Peninsular India – The Shore Temple at Mahabalipuram, Tamil Nadu

Author:
Miklós Kázmér; Siddharth Prizomwala; Krzysztof Gaidzik
Source:
Quaternary international 2022 v.638-639 pp. 140-147
ISSN:
1040-6182
Subject:
liquefaction,   etc   ; coasts; earthquakes; sea level; subsoil; India;     Show all 6 Subjects
Abstract:
... The Shore Temple in Mahabalipuram (Tamil Nadu, Southern India) exists since the late 7th century. Historical sources suggest that it was built on an island in honour of the gods Vishnu and Shiva. A former bridge over the canal, which separated the island from the mainland, and a seawall, which protected the shore from the waves are dysfunctional now, as they are located too high above the present ...
DOI:
10.1016/j.quaint.2022.02.014

12. Unraveling the effect of a two-layer system on the mobility of rapid gravitational flows

Author:
Wei Hu; Theo W.J. Van Asch; Yangshuai Zheng; Yan Li; Qiang Xu; Runqiu Huang; Mauri McSaveney
Source:
Engineering geology 2022 v.297 pp. 106481
ISSN:
0013-7952
Subject:
liquefaction,   etc   ; equations; hydraulic flumes; models; rheometers; viscosity;     Show all 6 Subjects
Abstract:
... Rapid gravitational flows such as debris avalanches and debris flows may entrain significant amounts of in situ material along their tracks, increasing their volume. Interactions between rapid gravitational flows and bed material are complicated. Especially, the physical mechanism of the fluidization has remained a mystery up to now. To gain a better understanding of the fluidization mechanism and ...
DOI:
10.1016/j.enggeo.2021.106481

13. Numerical study of seabed response and liquefaction around a jacket support offshore wind turbine foundation under combined wave and current loading

Author:
Shu-xin Wei; Zuo-dong Liang; Lin Cui; Hua-ling Zhai; Dong-sheng Jeng
Source:
Water Science and Engineering 2022 v.15 no.1 pp. 78-88
ISSN:
1674-2370
Subject:
liquefaction,   etc   ; models; turbulent flow; water; wind turbines;     Show all 5 Subjects
Abstract:
... The seabed instability induced by the transient liquefaction when exposed to wave-current may threaten the safety of offshore structures. In this study, the Reynolds-averaged Navier–Stokes (RANS) equations with the k–ε turbulence model were used to imitate the fluid dynamics, and Biot's poro-elastic theory was used to simulate the transient seabed response. An in-house solver (porous-fluid–seabed– ...
DOI:
10.1016/j.wse.2021.12.007

14. Experimental characterization of an innovative refrigeration system coupled with Linde-Hampson cycle and auto-cascade cycle for multi-stage refrigeration temperature applications

Author:
Yanbin Qin; Nanxi Li; Hua Zhang; Binhui Jin; Baolin Liu
Source:
Energy 2022 v.240 pp. 122498
ISSN:
0360-5442
Subject:
liquefaction,   etc   ; ambient temperature; cryopreservation; energy; evaporation; prototypes; refrigeration;     Show all 7 Subjects
Abstract:
... In this study, a dual mixed-refrigerants refrigeration system coupled with a Linde-Hampson refrigeration (LHR) cycle and a three-stage auto-cascade refrigeration (ACR) cycle was designed and built. The thermodynamic performance of the coupled system was experimentally investigated using low GWP zeotropic mixtures of R1234yf/R32 for the LHR and R170/R14/R50 for the ACR. The experimental results sho ...
DOI:
10.1016/j.energy.2021.122498

15. Unique relation between pore water pressure generated at the first loading cycle and liquefaction resistance

Author:
Xue-Qian Ni; Zhao Zhang; Bin Ye; Sheng Zhang
Source:
Engineering geology 2022 v.296 pp. 106476
ISSN:
0013-7952
Subject:
liquefaction,   etc   ; Japan; anisotropy; earthquakes; fabrics; geophysics; sand; vibration;     Show all 8 Subjects
Abstract:
... Accurate evaluation of excess pore water pressure (EPWP) generated in earthquake vibration is a key important factor in seismic engineering against liquefaction. Most previous studies were focused on the relation between cyclic resistance and EPWP developed in the entire liquefaction process. Only a few researchers pointed out that the maximum EPWP ratio accumulated at the first loading cycle, rep ...
DOI:
10.1016/j.enggeo.2021.106476

16. Influence of source-to-site distance and diagenesis on liquefaction triggering of 200,000-year-old beach sand

Author:
Barnabas Bwambale; Ronald D. Andrus; Tahereh Heidari; Joshua Gathro; Chris H. Cramer
Source:
Engineering geology 2022 v.298 pp. 106557
ISSN:
0013-7952
Subject:
liquefaction,   etc   ; diagenesis; earthquakes; geophysics; probability; sand; South Carolina;     Show all 7 Subjects
Abstract:
... Liquefaction triggering of the outcropping 200,000-year-old Ten Mile Hill beds sand facies (Qts) near Charleston, South Carolina is characterized in this paper. The characterization includes evaluating the relative susceptibility to liquefaction of Qts assuming a uniform seismic load and using seismic cone penetration testing at 46 sites, the ratio of measured small-strain shear wave velocity to e ...
DOI:
10.1016/j.enggeo.2022.106557

17. A new look at the statistics of tailings dam failures

Author:
Luca Piciullo; Erlend Briseid Storrøsten; Zhongqiang Liu; Farrokh Nadim; Suzanne Lacasse
Source:
Engineering geology 2022 v.303 pp. 106657
ISSN:
0013-7952
Subject:
liquefaction,   etc   ; databases; geology; humans; regression analysis; risk assessment;     Show all 6 Subjects
Abstract:
... Tailings dams are commonly built incrementally to increase the storage capacity of the Tailings Storage Facility (TSF), usually without interrupting the mining activities. Dam management practices, lack of knowledge on tailings behaviour and the poor performance of monitoring and management processes have resulted in disastrous tailings dam failures with human and economic losses, as well as huge ...
DOI:
10.1016/j.enggeo.2022.106657

18. Hydrothermal carbonization and Liquefaction: differences, progress, challenges, and opportunities

Author:
Daniel Lachos-Perez; Paulo César Torres-Mayanga; Ederson R. Abaide; Giovani L. Zabot; Fernanda De Castilhos
Source:
Bioresource technology 2022 v.343 pp. 126084
ISSN:
0960-8524
Subject:
hydrothermal liquefaction,   etc   ; biomass; biorefining; energy; environmental sustainability; hydrothermal carbonization;     Show all 6 Subjects
Abstract:
... Thermochemical processes including hydrothermal technology are gaining research interest as a potentially green method for deconstructing biomass into platform chemicals or energy carriers. Hydrothermal liquefaction (HTL) and Hydrothermal Carbonization (HTC) are advantageous because of their enhanced process performance while being environmentally friendly and technologically innovative. However, ...
DOI:
10.1016/j.biortech.2021.126084

19. Techno-economic versus energy optimization of natural gas liquefaction processes with different heat exchanger technologies

Author:
Heechang Son; Bjørn Austbø; Truls Gundersen; Jihyun Hwang; Youngsub Lim
Source:
Energy 2022 v.245 pp. 123232
ISSN:
0360-5442
Subject:
liquefaction,   etc   ; energy; heat exchangers; heat transfer; natural gas; temperature;     Show all 6 Subjects
Abstract:
... The energy intensity of the natural gas liquefaction process in LNG value chains is considerable, and therefore a number of energy optimization studies have been conducted to obtain optimal operating conditions and maximize process efficiency. In order to limit the size and cost of heat exchangers during energy optimization, a minimum temperature approach constraint is used for heat exchangers, pr ...
DOI:
10.1016/j.energy.2022.123232

20. Thermochemical liquefaction of Brassica napus straw: Effect of liquefaction parameters on biocrude

Author:
Zhihua Xiao; Qingdan Wu; Xiaochen Zheng; Liqing Zhang; Dongsheng Zou; Baoxiong Chen; Bin Wang; Fen Liu
Source:
Industrial crops and products 2022 v.188 pp. 115564
ISSN:
0926-6690
Subject:
liquefaction,   etc   ; Brassica napus; biofuels; energy; solvents; straw; temperature; transportation;     Show all 8 Subjects
Abstract:
... Rape straw (Brassica napus) was used to prepare high-quality biocrude (ORS) through thermochemical liquefaction. The effects of liquefaction temperature, solid-liquid ratio (R₁), and solvent filling ratio (R₂) on the yield of ORS prepared from rape straw were studied. The yield of ORS reached the maximum value (22.11 %) at 340 °C, with R₁ 10 % and R₂ 20 %. GC-MS analysis indicated that at low liqu ...
DOI:
10.1016/j.indcrop.2022.115564