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In south Ningxia is the most developed areas in Ningxia Hui Autonomous Region of geological disasters . Geological disasters of landslide - based and accompanied by collapse , debris flows , etc., and each year has a new hidden point in the flood season , with a sudden , strong blasts against big , local people's lives and property constitutes a serious threat. The mechanism of the formation of the various geological disasters in different geological environmental conditions , can provide reliable theoretical basis for disaster prevention and mitigation in the Southern Ningxia Mountain project construction and engineering protection , to reduce the people's lives and property damage caused by geological disasters in the region , and enhance social stability development planning , and promote the coordinated development of the geological environment protection and socio-economic has important theoretical and practical significance . Of major geological disasters in south Ningxia , on the basis of the geological hazard survey of the counties (cities) , the geological formation of geological disasters environmental conditions to start within the layer of loess landslides , avalanches, landslides of loess earthquake , loess bedrock landslide and the formation mechanism of the debris flow research . First of all , based on a brief analysis of the Southern Region in Ningxia regional geological environmental conditions , identify the main types of geological disasters in Southern Ningxia Mountain , analysis of landslides, avalanches, landslides and unstable slopes basic characteristics of space and time distribution law ; Second, analysis , respectively, on the relationship between of disaster formation and topography, lithology, tectonic , seismic , neotectonic movement , hydrogeological and human engineering activities , draw : the deep valley of loess Hilly Area , loess slippery and mudstone formation exist strong neotectonic movement and groundwater since the late Pleistocene landslide generated internal conditions , earthquakes , precipitation and human engineering activities is a major predisposing factor of landslide . Earth and Rock steep mountain terrain and strongly weathered Cretaceous mudstone debris flow generated by the internal conditions , rainfall is the major predisposing factor ; Finally, GEO-SLOPE software layer of loess landslides , avalanches, loess seismic landslide and loess bedrock landslide slope, slope , rainfall , human engineering activities carried out numerical simulation of the loess landslide deformation and failure mode , and analyzed the distribution characteristics of the debris flow formation conditions and the movement mechanism .
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