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The study of mechanical properties and fracture evolution of coal-rock masses under hard roof-soft floor conditions
Published 2025-01-01“…Samples with higher soft rock strengths tend to exhibit brittle failure, while weaker samples show stress-softening behaviour. …”
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42
Instability Mode and Control Technology of Surrounding Rock in Composite Roof Coal Roadway under Multiple Dynamic Pressure Disturbances
Published 2022-01-01“…The deflection of the roadway roof and the extent of the plastic zone are negatively correlated with the distance from the soft rock layer to the roadway but positively correlated with the thickness of the soft rock layer. …”
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43
Comparative Analysis of Thermomechanical Properties and Thermal Damage Constitutive Models of Three Soft Sedimentary Rocks
Published 2020-01-01“…Uniaxial compression experiments were conducted on three kinds of soft rock-cement mixed specimens at 25°C~55°C multistage temperature in an environmental chamber. …”
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44
Study on Deformation Mechanism and Support Measures of Soft Surrounding Rock in Muzhailing Deep Tunnel
Published 2020-01-01“…The field monitoring results show that the new support system can well control the large soft rock deformation of Muzhailing tunnel (0.5 m). …”
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45
Recognition of Red-Bed Landslides over Eastern Sichuan through Remote Sensing and Field Investigations
Published 2022-01-01“…Red-bed soft rock, characterized by the gentle slope, low intensity, and weak weathering resistance, is widely distributed over the Eastern Sichuan Province, China, threatening many lives of people, economy development, and urbanization progress. …”
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46
Analysis of Surrounding Rock Creep Effect on the Long-Term Stability of Tunnel Secondary Lining
Published 2021-01-01“…The secondary lining failure of deep buried soft rock tunnel often occurs, which is obviously related to the time factor. …”
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Study on Supporting Protection of Tunnel Opening near a Rock Layer under Elastic Deformation of Surrounding Rock
Published 2021-01-01“…According to the monitoring results of the actual project, the deformation law of the soft rock section at the tunnel entrance is mastered. …”
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48
Laboratory and Centrifuge Model Tests on Influence of Swelling Rock with Drying-Wetting Cycles on Stability of Canal Slope
Published 2018-01-01“…Meanwhile, the failure mechanism of soft rock slope induced by D-W was discussed.…”
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49
Research on the Disintegration Characteristics of Carbonaceous Mudstone and Properties of Modified Materials
Published 2019-01-01“…The results may provide a reference for the prevention and control of soft rock slopes.…”
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50
Vs30 Mapping and Soil Classification in Tiznit Region Based On H/V Spectral Ration Method
Published 2025-01-01“…The results show that the soil in the study area is divided into two classes according to the National Earthquake Hazards Reduction Program (NEHRP) classification: Class C refers to soft rock and very dense soils with VS30 greater than 360 m/s, while Class D represents stiff soils with VS30 values between 180 m/s and 360 m/s.…”
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51
Research on Shield Tunnelling Parameters Correlation in Composite Strata
Published 2022-01-01“…The complex formation has complicated geological changes, including soft rock, hard rock, and soft and hard inhomogeneous formation. …”
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Experiment and Numerical Simulation on Creep Mechanical Behaviors of Mudstone under Unloading Condition
Published 2022-01-01“…The deep soft rock with complex occurrence conditions is easy to produce significant creep deformation under the influence of high in situ stress, high temperature, and disturbance, which has a great influence on the safety and long-term stability of structures with long service life, such as underground chambers and nuclear waste storage rooms. …”
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53
Characterization of Soil Properties and the Implications for Landslide Occurrence in Rubanda District.
Published 2023“…And from the plasticity charts the PI and LL results reveals that the soils are clay of high plasticity and this signals chances of landslides Soil particle distribution The clay fraction for the soil were above 10% threshold identified from the analysis of the soil samples from the respective test pits as shown in the table below, this explains higher possibilities of extreme expansion potential and hence susceptible to land slides The bearing capacity of soil was determined as 250.825 kN/M3.When compared with the safe Safe/allowable bearing capacity of Soft rock 440kN/M3, the bearing capacity of soil is too low indicating high chance of collapsible soil.…”
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54
Particle Flow Analysis of Mechanical Properties and Failure Behaviour in Composite Rock Strata with Holes
Published 2021-01-01“…It shows that the first area to be damaged in composite rock strata transfers from soft rock to hard rock with the increase in dip angle. …”
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An Experimental Study on the Water-Induced Strength Reduction in Zigong Argillaceous Siltstone with Different Degree of Weathering
Published 2016-01-01“…The water-softening property of soft rocks is a key problem in geotechnical engineering. …”
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56
Study on Seepage Simulation of High Pressure Grouting in Microfractured Rock Mass
Published 2021-01-01“…Along with the large deformation and continuous rheology of the soft rock roadway, the fractures in the surrounding rock are likely to be compressed and closed, forming undeveloped microfractures, which hinder conventional grouting support methods. …”
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Experimental Study of the Creep Disturbance Effect and Acoustic Emission Characteristics of Mudstone with Different Moisture Contents
Published 2021-01-01“…It is important to have a clear understanding of the creep characteristics of water-rich soft rocks under a dynamic load and the evolution of cracks because soft rock roadways in deep mines are very sensitive to disturbances, and instability and damage can easily occur under the impact of disturbances such as mining and blasting. …”
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Influence of Elevation on Slake Durability Index of Quartz Mica Schist: A Case Study of East Slope of Manjiazhai Open Pit
Published 2022-01-01“…This study provides a new idea for guiding the research on the disintegration characteristics of similar soft rock slopes in the elevation direction.…”
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Nonlinear Dynamic Constitutive Model of Frozen Sandstone Based on Weibull Distribution
Published 2020-01-01“…Furthermore, the fitting results serve as reference for the study of the constitutive model of weakly cemented soft rock and the construction of roadway freezing methods.…”
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Constitutive Model of Swelling Gypsum Rock
Published 2020-01-01“…Swelling of soft rock, such as gypsum rock, is one of the major threats in tunnel engineering, causing structure damages such as floor heave and inward movement of sidewalls during construction and operation. …”
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