Abstract
According to the investigation on the distribution of surface geological hazards in Maoping Mine, Yunnan Province, the stability calculation and discrete element numerical simulation of Meitanyakou landslide were carried out. The result shows that under the action of earthquake and rainfall, the Meitanyaku landslide has a chain disaster mode of high source start-up, acceleration slippage on the steep slope, gentle slope debris flow scattering and accumulation, and block rolling and throwing. Based on this, the reinforcement and treatment scheme in the landslide source area was formulated: the surface soil and vegetation in the gentle slope area were used to block the landslide, the passive protective net was installed at the bottom, and the reinforcement and treatment facilities were monitored. Meanwhile, a complete set of advanced and reliable slope online monitoring and early warning systems was established. After treatment, there was no unstable landslide, and the slope and its engineering structures in the monitoring area were stable, which shows that the chain disaster mode of landslide geological disaster and the complementary scheme of prevention and control countermeasures are effective.
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