The evaluation area of the data set is the Qinghai Tibet Plateau. The data set is based on the spatial distribution data set of geological hazard risk, earthquake risk, flood risk and freeze-thaw risk, with weights of 0.25, 0.4, 0.15 and 0.05 respectively. The disaster risk is divided into five levels, representing extremely low, low, medium, high and extremely high risk levels respectively. Finally, the risk evaluation results of multiple disasters in the Qinghai Tibet Plateau are obtained. Using the investigation data and public data, the multi disaster risk data of the Qinghai Tibet Plateau are obtained by weighted analysis of each single disaster risk data in ArcGIS.
1) Data content: this data set is the landslide disaster data of Sanjiang Basin in the southeast of Qinghai Tibet Plateau; 2) Data source and processing method: this data set was independently interpreted by Dai Fuchu of Beijing University of technology using Google Earth; This data file is finally formed by remote sensing interpretation - on-site verification - re interpretation - re verification and other methods after 7 systematic interpretation. More than 5000 landslides have been verified on site with high accuracy; 4) This data has broad application prospects for hydropower resources development, traffic engineering construction and geological disaster evaluation in the three river basins in the southeast of Qinghai Tibet Plateau.
Data content: spatial distribution, development mechanism and point database of river-blocking landslide in the Three Rivers region Collection scheme: First carry out Google Earth remote sensing interpretation, then carry out field verification and improve the interpretation signs in combination with field verification. Then carry out detailed interpretation, and collect the scale and geomorphic data including landslide source area, movement area and accumulation area. Then study and analyze the typical cases of river-blocking landslide, This reveals the engineering geological classification and genetic mechanism of river-blocking landslide in the Three Rivers rigion. Collection location: Sanjiang area of Qinghai Tibet Plateau and Sichuan University Collection time: October 1, 2018 to October 31, 2021
Data content: Monitoring of seepage infiltration line and analysis of seepage infiltration degree of dam break Data source: the data collection place is Sichuan. The experimental analysis was mainly completed in Sichuan University and Chengdu Ruyi Instrument Co., Ltd. The instruments used included high-speed camera, wave altimeter, electronic pressure measuring tube, pressure sensor, mechanical timer, etc. The collection time is 2021. Acquisition method: according to the indoor test, observe the evolution process of seepage development in the process of dam break of weir plug dam through electronic piezometer, pressure sensor and high-speed camera. Data quality description: carry out the stability model test of dam with different structures, and carry out the indoor test. According to the grading requirements of 14 working conditions, pile the dam body on the bottom plate of the water tank, and arrange multiple cameras to observe. During the process of clean water flowing into the water tank to wash the dam until the end of dam break, observe the coordinates of the infiltration process, and record the change process of the infiltration coordinates with time.
Data content: monitoring of water level and flow velocity of dam break, and analysis of Froude number and flow process Data source: the data collection place is Sichuan. The experimental analysis was mainly completed in Sichuan University and Chengdu Ruyi Instrument Co., Ltd. The instruments used include high-speed camera, wave altimeter, electronic pressure measuring tube, pressure sensor, mechanical timer, etc. The collection time is 2021. Acquisition method: observe the process of field large-scale dam burst test through multiple high-speed cameras, wave altimeters, total head pressure sensors, mechanical timers and other instruments. Data quality description: relevant sensors were arranged in the field test, and real-time process dynamic observation was carried out. A total of 6 large-scale test conditions were observed, including water level and flow rate observation at 400 points. Then, Froude number and flow process were calculated and analyzed through flow rate and water level.
Data content: Taking Baige landslide in 2018 as an example, this data simulated the down-hill migration and accumulation process of debris flow on the slope Data source: this numerical simulation data was collected and recorded by computer software (using open source code ESYS-Particle). Data quality description: the data were mainly images and video GIF files, which were processed by video editing and image processing software. Data application results: Taking the latest Dujiang landslide as an example, the simulation of the downward migration and accumulation process of debris flow along the slope will provide a theoretical basis for the evaluation of landslide disaster effect from the development of similar strata and slope structure.
Data content: this data used the open source code ESYS-Particle to simulate the interaction between debris flow and slit dam Data source: this numerical simulation data was collected and recorded by computer software (using open source code ESYS-Particle). Data quality description: the data were mainly images and video GIF files, which were processed by video editing and image processing software. Data application: four basic interaction stages of debris flow impacting slit dam were revealed: initial impact stage, uplift stage, accumulation stage and deposition stage. The interception efficiency of slit dam with different relative column spacing to particles of different shapes was analyzed.
Data content: Taking Baige landslide in 2018 as an example, the numerical simulation of typical river-blocking landslide was carried out Data source: the numerical simulation data were collected and recorded by computer software (massflow developed by Mountain Institute of Chinese Academy of Sciences). Data quality description: the data were mainly image JPG and video GIF files, which were processed by video editing and image processing software. Data application results: Taking the latest river blocking landslide as a case, the numerical simulation of typical river-blocking landslide will provide a theoretical basis for the evaluation of the disaster effect of river blocking landslide in the deep valley area developed from similar strata and slope structure.
1) The data content includes: high-speed friction test data of rock mass structural plane in the sliding source area of typical high-speed remote landslide, physical simulation test data of high-speed remote landslide fragmentation, high-speed ring shear test data of sliding belt in the circulation area of typical landslide, fine particle migration and reverse order physical simulation test data in the accumulation area of landslide, high-speed remote landslide numerical simulation system and evaluation data. 2) Data source and processing method: test data collection. 3) Data quality description: good - General. 4) Data application achievements and prospects: it can be used to study the initiation, movement and accumulation mechanism of high-speed and long-distance rock landslide in Qinghai Tibet Plateau, and simulate the whole process of landslide movement.
Data content: Storage capacity curve of the Hongshiyan, yibadao and xiaogangjian impoundment and flow hydrograph data of breach Data source: through literature search, classification, consolidation and compilation. Data quality description: through literature retrieval, data of four typical barrier lakes were compiled, including Hongshiyan barrier lake in Ludian, Yunnan, xiaogangjian (upper) barrier lake in Mianzhu County, Deyang City, Sichuan, and yibadao barrier lake in Mianzhu County, Deyang City, Sichuan. The basic parameters compiled here include: dam crest elevation, dam height, dam width and other basic parameters, as well as discharge channel parameters, dam grading, storage capacity curve, breach discharge hydrograph and other parameters, which were summarized and analyzed. It can provide a reference for the parameters of barrier lakes in the Qinghai Tibet Plateau.