Superficial Deformation and Failure Modes of Small and Medium Scale Slopes in Red Bed Sichuan Basin

Li, Xiaoning; Tan, Ruwen

doi:10.1061/41184(419)338

Cited by 1 publication

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The statistics show that 80% of the red-bed area in China is distributed in a humid region that spreads from the east of the Qinghai-Tibet Plateau to the south of the Qinling and Huaihe River, and the involved red-bed area For example, sandstone contains a mudstone interlayer, which softens easily and fails when it meets water. The mechanical properties of red-bed soft rock containing weak interlayers can be studied by laboratory and field analyses of the mineralogical composition of the weak interlayer [24,25]. Structural features such as faults, joints, interlayer slippage zones, and pelletization dissection are usually well developed and are considered to be other types of main structure plane in red beds, such as the interlayer slippage zone (a structurally related feature) of red beds located in southwestern China [26] and faults or fractures at the depth of red beds in the South Georgia Rift (SGR) basin [27].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%