Abstract The conceps of dynamic gliding plane and instantaneous stability coefficient of landslide are established through analyzing landslide motion process f rom static state to dynamic state. The relationship of velocity , force , direction of landslide motion and time is quantitatively described through analyzing the instantaneous st ress state , velocity variation and motion direction of landslide. At last , the digital simulation of 32dimension motion of land2 slide is accomplished under GIS support .
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Received: 06 July 1999
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