Distribution law and development trend forecast of geological hazards in Qilian Mountain

Geological hazards occur frequently in Qilian Mountain, causing economic losses and casualties, therefore, this scientific expedition mainly investigates the geological hazards in the Qilian Mountain where the distribution of hazards is uneven, mainly concentrating in the southeast. Due to the inaccuracy of remote sensing interpretation of hazard sites, it is necessary to combine field investigations to calibrate hazard distribution and development trend forecast. Through on-site survey and investigation of each hazard sites, field survey forms and hazard plane sketches should be finished on site. Through unmanned air vehicle survey and on-site sampling, the specific situation of the hazard sites can be acquired, and we can summarize the hazard data to obtain the distribution of hazard sites. We studied the damage forms and characteristics of engineering structures within the influence range of typical disaster chains, and analyzed the combined damage characteristics of different disaster chains and different engineering structures. We researched the possible development trends of potential disaster chains, and predicted their impact and damage on engineering structures. On-site investigation of hazard sites is of great significance in exploring the key links of disaster chain control and proposing monitoring measures for engineering hazard prevention and mitigation.