Deformation and control engineering related to huge landslide on left bank of Xiluodu reservoir, south-west China

Xu, Weiya; Zhang, Q.; Zhang, J.C.; Wang, R.B.; Wang, R.K.

doi:10.1080/19648189.2013.834598

Cited by 21 publications

(6 citation statements)

References 13 publications

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“…Landslides account for only 23.76% of the hazards that take place in the red beds in South China and they are mostly deep (about 5-20 m) sliding failures [51]. The induced damage is generally more serious than that caused by shallow weathering and spalling, scouring, and Rock falls are the most common geological hazards in the red beds in South China.…”

Section: Landslidementioning

confidence: 99%

Classification of Red-Bed Rock Mass Structures and Slope Failure Modes in South China

et al. 2019

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Red beds are Meso–Cenozoic continental sedimentary strata that are mainly composed of gravel stone, sandstone, siltstone, mudstone, and shale and occasionally have interlayers of limestone, halite, and gypsum. As a typical rock mass, red beds are widely distributed throughout South China. In a typical tropical and subtropical continental environment, red beds are the product of multiple sedimentary cycles, which have resulted in complicated rock mass structures that play an important role in rock mass stability. It is thus of great significance to investigate the influence of different rock mass structures on the stability of red-bed slopes. In this paper, the geological formation history of red beds in South China is described. The main features of red-bed rock mass slopes in South China are discussed. The main combinations of inner geomechanical structures comprise: (1) mega-thick soft rock structures; (2) mega-thick hard rock structures; (3) thick hard rock structures with weak intercalation; and (4) soft–hard interbedded structures. In addition, the features of slope failure are analyzed, and four common failure modes are identified from the statistical data: (a) weathering spalling and scouring; (b) rock falls; (c) landslides; and (d) tensile dumping.

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Section: Landslidementioning

confidence: 99%

Classification of Red-Bed Rock Mass Structures and Slope Failure Modes in South China

et al. 2019

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“…Rainfall is an important cause of hazardous landslides in Nanfen open-pit iron mine slopes. The effect of rainfall can be mitigated by a variety of slope stability control measures including surface drainage engineering, underground drainage engineering, back pressure engineering, weight reduction engineering, and river engineering [34][35][36]. For landslides with relatively fixed boundaries and a small traction range, permanent interception, and drainage to outside the landslide range can be put in place.…”

Section: Prevention Measures Of Slope Instabilitymentioning

confidence: 99%

Effect of Dry-Wet Cycling on the Mechanical Properties of Rocks: A Laboratory-Scale Experimental Study

et al. 2018

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Taking Nanfen open-pit iron mine in Liaoning Province as the engineering background, this study analyzes the effect of water-rock circulation on the mechanical properties of rock through a combination of macro-mechanical experiments and microstructure tests in the laboratory. Uniaxial compression experiments and acoustic wave tests are used to determine the degradation law of the mechanical properties of chlorite under the periodic action of water. The experimental results show that dry-wet cycles have a continuous and gradual effect on the rock sampled: Its uniaxial compressive strength, elastic modulus, and acoustic velocity all decrease gradually with an increase in the number of cycles. After 15 wet-dry cycles, the uniaxial compressive strength and elastic modulus of the rock decreased by 34.21% and 44.63%, respectively. Electron microscope scans of the rock indicate that the particle size, characteristics, and pore distribution at the rock surface had changed significantly after water-rock interaction. Finally, a drainage system and sliding force monitoring devices have been arranged at the mine site that can effectively reduce the impact of water-rock interaction on the stability of the mine. This combination of macro-experiments and micro-analysis allowed the weakening effect of dry-wet cycles on slope rock to be studied quantitatively, providing a theoretical reference for stability evaluation in geotechnical engineering.

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“…W.Y. Xu et al (2013) [41] analyzed a case study of a slope failure induced by excavation near Xiluodu Dam. According to the results, the damage was primarily caused by excavation that activated the ancient slip zone, thereby allowing external factors to impact the slope and cause a shallow slide.…”

Section: Introductionmentioning

confidence: 99%

Field and Numerical Investigation of Taihu Resort Cut Slope Failure in Suzhou, China

Raouf,

Feng,

Zhang

et al. 2024

Applied Sciences

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This study aims to determine the cause of a landslide located at Taihu Resort in Suzhou, Jiangsu Province, China. Field monitoring has been conducted, including two-dimensional finite element method (FEM) numerical analyses to examine slope stability under different working conditions. The monitoring data indicated that the slope deformation was triggered in two phases: at a certain period when the slope was cut and moderate rainfall occurred in November; and afterward, when a continuous heavy rainfall intensity hit during the monsoon rainfall, which accelerated sliding of the slope. Numerical simulations show that stress and maximum displacement distributions formed and redistributed during the excavation process, where the shear strain occurred mainly in the front layer of soil. Additionally, the factor of safety of the slope decreases gradually with the increase in the excavation rate. During 15 days of continuous rainfall infiltration, the slope under heavy rainfall indicates a minimum factor of safety (FoS). Specifically, the slope excavation followed by heavy rainfall intensities contributed significantly to the landslide.

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Deformation and control engineering related to huge landslide on left bank of Xiluodu reservoir, south-west China

Cited by 21 publications

References 13 publications

Classification of Red-Bed Rock Mass Structures and Slope Failure Modes in South China

Classification of Red-Bed Rock Mass Structures and Slope Failure Modes in South China

Effect of Dry-Wet Cycling on the Mechanical Properties of Rocks: A Laboratory-Scale Experimental Study

Field and Numerical Investigation of Taihu Resort Cut Slope Failure in Suzhou, China

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