中国矿山工程

This paper is based on a large limestone mine construction project in Hebei Province. In order to study the excavation stability and reinforcement measure of the mine slope, FLAC (a 3D digital simulation software) is used for modeling and calculation of the mining slope, with the expectation to provide some practical value and guidance for actual mining projects. The study results show that under normal working conditions, as the excavation of benches, more and more obvious displacement occurs to the slope rockmass, which brings more and more safety risks to the mine construction. The poor stability of soft rock strata directly influences the firmness and stability of the mine slope and makes it easy to occur curved landslides, further leading to the buckling failure of rockmass. To strengthen the slope protection and safety, anti-slide piles are used for reinforcement. This measure has played a good effect in controlling the plastic zone of the slope and reducing the increasing displacement and shear stress of the slope. Meanwhile, the safety of rockmass has been improved and the stability of rockmass has been further enhanced.