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961
Triaxial Permeability Experimental Study on Deformation and Failure Processes of Single-Fractured Rock Specimens
Published 2020-01-01“…The different effects of seepage pressure on the deformation and failure characteristics between a conventional triaxial compression test and a triaxial permeability test were studied using a servo-controlled testing machine. …”
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962
Stability Analysis of Earth-rockfill Dam Slope under the Condition of Reservoir Water Level Fluctuation and Continuous Rainfall
Published 2020-01-01“…In order to study the influence of reservoir water level fluctuation and continuousrainfall on the seepage and stability of small and medium earth-rockfill dams, based on theunsaturated seepage theory, this paper carries out the finite element simulation of seepage andstability of earth-rockrill dam slope under the condition of seepage stress coupling when thereservoir water level fluctuated and the rainfall with different intensities is continuous. …”
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963
Disaster-Causing Mechanism of the Continuous Failure of Deep Foundation Pits in Tropical Water-Rich Sandy Strata
Published 2024-12-01“…The results indicate that the water barrier layer is the thinnest at the elevator shaft foundation pit, with a rapid shortening of seepage paths following the extraction of steel sheet piles; the seepage velocity increases by approximately 120%, leading to groundwater breaching both the water barrier and cushion layers. …”
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964
Effects of Internal Pressure on Urban Water Supply Pipeline Leakage-Induced Soil Subsidence Mechanisms
Published 2024-01-01“…After the rupture of pressurized water supply pipes in urban underground areas, seepage-induced ground subsidence becomes a severe geological hazard. …”
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965
Underground Karst Stratification in Covered Karst Areas Under Control of River Valley Evolution: A Case Study of Baishiyao Hydropower Station
Published 2023-01-01“…The underground karsts of the river valley in the covered karst area generally have the characteristics of vertical zoning with a strong upper part and a weak lower part.The causes of such vertical zoning are still unclear,which brings difficulties to practical engineering applications.Therefore,the multi-phase superimposed stratification model of river valley karsts is simplified to the three-phase superimposed strengthening model of underground karsts of the river valley.The simplification is conducted on the basis of finding out the characteristic karstification heads such as the maximum karstification head,the maximum strengthening head,and the latest strengthening head in the evolution process of the river valley from the canyon period to the basin period.The three-phase superimposed strengthening model is divided into the deep isolated cave layer,middle enhanced karst layer,and modern karst-influenced layer from bottom to top.Taking the Baishiyao Hydropower Station as an engineering example,this study analyzes the evolution of the river valley and the stratification of the underground karst profile.It is proposed that as the modern karst-influenced layer of the dam foundation is strongly developed,it is the key point of anti-seepage.The maximum anti-seepage depth of karsts should enter the middle enhanced karst layer to greatly lessen the anti-seepage treatment of karst leakage of the dam foundation and save engineering investment.Years of leakage observation suggest that the anti-seepage effect is good.The underground karst stratification in the covered karst area is of certain practical significance and can be used as a reference for the seepage prevention engineering of similar dam foundations.…”
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966
Coupled Hydrologic-Mechanical-Damage Analysis and Its Application to Diversion Tunnels of Hydropower Station
Published 2021-01-01“…Since the traditional model cannot sufficiently reflect the multifield coupling problem, this paper established an elastoplastic stress-seepage-damage analysis model considering the seepage field, stress field, and damage field. …”
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967
Non‐Invasive Tumor‐Naïve Minimal Residual Disease Detection of Liver Cancer by Incorporating Circulating Tumor DNA Features and Alpha‐Fetoprotein: A Prospective Study
Published 2024-12-01“…In this study, we expanded upon our previously developed multi‐omics assay, initially designed for liver cancer early detection by calculating a cancer signal score (PHCC), to determine the MRD status (named SeekInCure). This process integrated protein tumor marker alpha‐fetoprotein (AFP) and cancer genomic hallmarks, copy number aberration (CNA) and fragment size (FS). …”
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968
Study on Stability of Tunnel Surrounding Rock and Precipitation Disaster Mitigation in Flowing Sand Body
Published 2021-01-01“…In addition, the water seepage also causes tunnel instability. Considering the characteristics of water seepage, how to improve the stability of flowing sand bodies and prevent the instability of surrounding rocks has become a difficult problem. …”
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969
Grouting Design of Rich Water Tunnels and the Calculation of Distance between Annular Blind Pipes
Published 2020-01-01“…Based on Darcy’s law and the law of conservation of mass, the formula for calculating the seepage discharge and the seepage pressure with the parameters of annular blind pipe spacing is derived. …”
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970
Experimental Research on the Impact of Ion Exchange and Infiltration on the Microstructure of Rare Earth Orebody
Published 2017-01-01“…The pore structure changes from loose to compact; in the entire ore leaching process, the ion exchange action advances in a layered shape along the direction of seepage, and the chemical replacement and physical seepage alternately impact the microstructure of the orebodies.…”
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971
A Modified Cubic Law for Rough-Walled Marble Fracture by Embedding Peak Density
Published 2020-01-01“…It is discovered that the 3D fracture morphology had great influences on the seepage characteristics of the single rock fracture. …”
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972
Random Characteristics of Hydraulic Gradient through Three-Dimensional Multilayer Embankment
Published 2022-01-01“…The distribution characteristics of hydraulic gradient in embankment are closely related to seepage failure. Seepage failures such as flowing soil and piping will lead to serious damage and even the overall failure of embankment. …”
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973
Transient Pulse Test for Non-Darcy Flow Behaviors and Hydromechanical Coupling Effect of Fractured Limestone
Published 2020-01-01“…The larger the confining pressure is, the more obvious the non-Darcy seepage effect of fractured rock seepage is. The seepage of rock fracture under high confining pressure is a highly nonlinear time-varying seepage. …”
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974
Arc-Surfaced Frictional Damper for Vibration Control in Container Crane
Published 2017-01-01“…Then the device is applied to container crane based on a seesaw mechanism. The major advantage of the seesaw damping system is that the long tension cables can be utilized as bracing between the seesaw member and the portal legs to avoid compression and buckling of the cables. …”
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975
Experimental Investigation on Permeability and Mechanical Deformation of Coal Containing Gas under Load
Published 2018-01-01“…At high confining pressures (i.e., 6 MPa and 8 MPa), no significant differences between the methane seepage velocities of the specimens were evident, and their seepage curves were similar to prefracture. …”
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976
Parameter Optimization of Constant Pressure Grouting Technology for Borehole Sealing with Inorganic Noncondensable Material in Tectonic Coalbed of South China
Published 2023-01-01“…Firstly, the slurry fluidity, water separation rate, and sealing performance of the inorganic sealing materials were tested under different water-cement ratios. The seepage model of slurry in a layer-through borehole was built with COMSOL Multiphysics simulation software, to explore the scopes of loose circles around drainage roadway and borehole, and to analyze the seepage capacity of the slurry under different grouting pressures. …”
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977
Optimal Look-Angle Guidance with Field-of-View and Impact Angle Constraints for Strapdown Munition
Published 2022-01-01“…A strapdown seeker with limited field-of-view (FOV) can simplify and decrease cost of the guidance system for a munition. …”
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978
Experimental Study on Permeability of Fractured Sandstone with Different Tips
Published 2020-01-01“…The test results show that with the increase ofosmotic pressure from 0.1 MPa to 0.5 MPa, the dissolution and scouring of hydrophilic minerals infractured sandstone increase gradually, resulting in new seepage channels and the increase ofpermeability coefficient. …”
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979
Damage and Failure Evolution Mechanism for Coal Pillar Dams Affected by Water Immersion in Underground Reservoirs
Published 2019-01-01“…In this study, a seepage-stress coupling model of a coal pillar dam was constructed using the Universal Distinct Element Code (UDEC) simulation software. …”
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980
Instability Process Model Test for Bedding Rock Slope with Weak Interlayer under Different Rainfall Conditions
Published 2018-01-01“…The test results show that the original seepage characteristics of the slope were changed by the existence of weak interlayer, presented the “double seepage” effect, resulted in the seepage characteristics of rock and soil in the shallow layer and weak interlayer of the slope showed a sickle “Γ” distribution, and the adjacent rock layer presented a curve-type “S” distribution. …”
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