中国矿山工程

According to the actual construction situation of a mine in alpine region, the safety and stability of high and steep rock slope under freezing and thawing cycles are analyzed by means of field measurement, laboratory test, SVOffice software simulation and limit equilibrium theory analysis. The experimental simulation and field verification show that when the temperature difference is about 50℃, the influence of freeze-thaw cycle on rock mass is mainly reflected in strength decrease and fissure increase of shallow rock mass, and the freezing depth is less than 8m. According to the actual situation of a mine with high and steep slope, the limit equilibrium theory analysis show that the overall safety factor of the slope is reduced by 2.1%-5.2% compared with that before freezing and thawing, and the influence of freezing and thawing cycle on the overall slope stability is light.