6,784 Result(s)
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**u-**u Zhang
Geotechnical Engineering & Applied Earth Sciences
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Article
Seismic decomposition method using Ricker wavelet dictionary and its applications for Q-value estimation
Seismic records are composed of many seismic wavelets that are reflected from underground impedance interfaces. Q-value information of the formations is contained in these seismic wavelets; therefore, it motivate...
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Article
Thermal effects on the shear behaviour of saturated coarse-grained soils with reference to post-earthquake deposits
Recently, the dependency of post-earthquake landslides on temperature variation has been increasingly discovered, where the slope deposits at risk are often enriched with loose and nearly saturated coarse soil...
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Article
Experimental study on shear weakening mechanism of local roughness for rough rock fracture surface in different directions
The morphological characteristics of the fracture surface play a crucial role in determining its shear strength and deformation. Additionally, the fracture surface undergoes varying degrees of damage at differ...
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Integrated method for calculating source rock thickness using drilling and seismic reflection: A case study of the Lishui Sag, China
The Lishui Sag, located in the East China Sea shelf basin, is one of the most promising offshore oil and gas exploration areas in China. Drillings in recent years have yielded unsatisfactory results. Character...
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Seismic events extraction method based on the B-COSFIRE filter combined with the differential evolution algorithm
Based on an analysis of the information processing mechanism in the primary visual cortex of biological vision, this study proposes an integration method of bar-combination of shifted filter responses (B-COSFI...
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Temperature Field Analytical Solution and Optimization Scheme after Excavation in Large-scale Ground Freezing Projects
Large-scale freezing projects, especially horizontal freezing projects, suffer from the problem of long exposure times, and weakening of the frozen curtain often occurs in the excavation stage. An analytical s...
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Improved Multi-objective Butterfly Optimization Algorithm and its Application in Cascade Reservoirs Optimal Operation Considering Ecological Flow
Traditional reservoir operations often take power production as the main purpose. However, blindly maximizing power production will prompt the reservoirs to work continuously at high water levels, leading to l...
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Evaluation of NLLoc positioning method and seismogenic structure analysis of Luanzhou MS 4.3 earthquake
NLLoc is a nonlinear search positioning method. In this study, we use simulated arrival time data to quantitatively evaluate the NLLoc method from three aspects: arrival time picking accuracy, station distribu...
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Article
A Framework for Quantifying Stormwater Control Measures’ Hydrologic Performance with Analytical Stochastic Models
Previously developed analytical stochastic models (ASMs) have the limitations in that they can only be individually applied for specific end-of-pipe or low impact development facilities. This paper proposed a ...
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Article
Shaking Table Model Tests and Stability Analysis of Slopes Reinforced with New Anti-Seismic Anchor Cables
To address the problem of brittle damage of CGACs under seismic loads, a C&S-RAC and an EB-SAC were developed. Multiple sets of shaking table model tests of anchored slopes under the excitation of El Centro, L...
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Investigating Size Effects on Gradient-Related Crack Behavior in Frozen Sand Samples: A Simplified Approach and Application
The stability performance of the frozen curtain formed under standpipe freezing is closely associated with the weak zone penetrated by thermal gradient-related fracture (TGF). The TGF-rich zone further affects...
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Article
One-Dimensional Consolidation Modeling of Soil Surrounding Buried Geothermal Pipelines: Incorporating Heat Diffusion Processes
Thermal consolidation of soil is a significant concern in buried geothermal pipeline engineering. Soil consolidation begins immediately upon pipeline completion, while a stable temperature field does not insta...
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Article
Open AccessFacile construction of porous carbon fibers from coal pitch for Li-S batteries
Coal pitch, an important by-product in the coal coking industry with a high output, is a low-cost and high-carbon yield precursor for the manufacturing of high-value carbon materials. Herein, N/O co-doped carb...
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Article
Contribution of freefall and rock mass structure to post-fragmentation spreading of rockslides
Sudden freefall is very common in high-velocity and long-runout rockslides. The combination of freefall and joints (a rock mass structure) may cause a high degree of fragmentation of sliding rock mass. However...
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Article
Strain energy dissipation during liquefaction of fibre-reinforced sand under undrained cyclic triaxial loading
Mixing discrete flexible fibres into sand may improve its liquefaction resistance during cyclic loading. Here, the benefits are demonstrated by performing undrained cyclic triaxial tests on fibre-reinforced sa...
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Article
The COVID-19 Impacts on Mobility Behavior in a Gulf Cooperation Council (GCC) Country
The COVID-19 has forced people to rethink the interrelationships between public health, urban environment and transportation. Past studies have attempted to investigate the impact of the COVID-19 on individual...
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Article
Study on the Effect of Carbonation on the Mechanical Properties of Lime Modified Waste Clay
A large amount of waste clay is generated in shield tunnel engineering. Although the physical properties such as the unconfined compressive strength of the clay have been improved through lime modification, so...
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Article
Training data selection using information entropy: Application to heating load modeling of rural residence in northern China
The selection of input variables and their amount has been an important issue in big data load forecasting. Taking heating load forecasting as an example, this paper proposed a method for data filtering based ...
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Article
Open AccessAssessment of factors and mechanism contributing to groundwater depressurisation due to longwall mining
Assessment of mining impact on groundwater is one of critical considerations for longwall extension and sustainability, however usually constrained by limited data availability, hydrogeological variation, and ...
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Article
Evaluation of Snowmelt and Rainfall Erosion in the Total Soil Losses in a Typical Small Watershed in Black Soil Region of Northeast China
Snowmelt erosion and rainfall erosion are important components of soil erosion in Northeast China. Studying how snowmelt and rainfall affect runoff and sediment yield is essential to control soil erosion in th...
