Abstract: Pingzhuang West open pit coal mine landslide is anti-inclined slope rock inversion layer with obvious fault structure and high level of landslide hazards.In order to grasp the real-time landslide state，the sufficient and necessary conditions of landslides is proposed based on the sliding force greater than the anti-sliding force.The sliding force remote monitoring and warning system with reinforcement -monitoring-warning integration function was adopted to realize the process of sliding force sensing，transmission，analysis，monitoring and early warning.Sliding force monitoring points and displacement comparison monitoring points are laid in the landslide area.Through continuous monitoring of regional landslide for nearly 3 months，the results showed that the sliding force remote monitoring and warning system is running well.All monitoring and early warning stages of the “07-0118 landslide” have been realized，and landslide sliding force monitoring is better than that of displacement monitoring，which verifies the advancement and practicality of the system.The successful application of this system provides the technical method and practical basis for other similar slope monitoring and warning.

Key words: Open pit coal mine, Landslide, Sliding force, Displacement, Monitoring and early-warning