Jilin Institute of Geo Environment Monitoring

Changchun, China

Jilin Institute of Geo Environment Monitoring

Changchun, China
SEARCH FILTERS
Time filter
Source Type

Zhang J.,Northeast Normal University | Liu X.,Northeast Normal University | Tong Z.,Northeast Normal University | Zhang Y.,Jilin Institute of Geo Environment Monitoring | Wang Y.,Jilin Institute of Geo Environment Monitoring
Intelligent Systems and Decision Making for Risk Analysis and Crisis Response - Proceedings of the 4th International Conference on Risk Analysis and Crisis Response, RACR 2013 | Year: 2013

The study provided a new method to assess the flood disaster risk of urban residential building from evaluating three aspects (hazard, exposure and vulnerability) based on the theory of regional disaster. Firstly, the inundated area was extracted from the remote sensing image during the disaster and the depth of flood was calculated by using RS and GIS technology with DEM data. Secondly, evaluation models of urban residential building properties were built based on the conceptual framework of exposure, and the relationship between the depth of flood and loss rate of properties was established by using regression analysis in order to present flood vulnerability curves of resident dwellings. Finally, flood disaster risk assessment model of residents' properties were built based on the formation mechanism of flood disaster risk. Taking Kouqian Town, Jilin, China as study area, the flood disaster risk of urban residential building was analyzed and assessed using provided method. The results indicated that the areas with high level of flood risk were mainly located in Old street, Lianshan bridge and the southern area of Hebei community. The results was verified in order to prove applicability of the method. This study would provide an important basis for disaster prevention and reduction. © 2013 Taylor & Francis Group.


Li H.,CAS Changchun Northeast Institute of Geography and Agroecology | Li H.,Jilin Institute of Geo Environment Monitoring | Zhang G.,CAS Changchun Northeast Institute of Geography and Agroecology | Song D.,SIPPR Engineering Group Co. | And 3 more authors.
Acta Geologica Sinica | Year: 2013

In order to study the characters of chemical kinetics for organophosphorus migration in clay with different pH, waste of organophosphorus was put under pressure to leakage permeating the cohesive soil, and simulate the process of organophosphorus leakage permeating the Aquitard, searching the characters of chemical kinetics for organophosphorus migration in clay with different pH. It is shown that the ability of migration of organophosphorus leakage permeating the cohesive soil fall with increase of pH; the penetration rate of organophosphorus is about 1.25% when pH is 7.5, organophosphorus has not penetrated the cohesive soil when pH is equal or greater than 8.5. The effect of retardarce is obvious. Concentration of PO4 3- that comes from the mineralization of organophosphorus is lowered slightly with increases of pH of clay, and rise with extension of time. The Chemical Kinetics equation is log c=-0.1pH+0.2172kc1t+S.


Zhang Y.-C.,Jilin University | Zhang Y.-C.,Jilin Institute of Geo Environment Monitoring | Nai L.,Jilin University | Shen S.-W.,Jilin University | Wang J.-Y.,Jilin Institute of Geo Environment Monitoring
Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition) | Year: 2011

Based on geological survey, each rock block of anti-dip slope is supposed to be a cantilever beam influenced by deadweight moment and external force, and the failure mode is studied with bending and tension-crack model. The mechanical model of anti-dip layered rock slope is established with mechanical analysis. Based upon maximum tensile stress theory, the slope stability is judged with toppling instability criterion of each block. Besides, the influencing factors of anti-dip slope toppling failure are analyzed quantitatively. The results show that the toppling failure of anti-dip slope occurs on the boundaries of each block. There is a linear relationship between volume weight and the tensile stress of each block, a second power function between height and the tensile stress, a negative one twice power function between width and the tensile stress. The toppling failure will be more obvious, as the rock block is heavier, higher and wider. Meanwhile, the toppling failure will happen when the range of the bottom dip of the rock block meets the suitqble condition, which is bound up with the height and width of the block.


Zhang Y.-C.,Jilin University | Zhang Y.-C.,Jilin Institute of Geo Environment Monitoring | Nai L.,Jilin University | Meng F.-Q.,Jilin University | And 3 more authors.
Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition) | Year: 2011

Division of geological-hazard-prone area has important significance for scientific geological disaster prevention. Based on the theory of hazard-prone area division, seven evaluation indexes such as quantity of hazard points, topography and geomorphology, geological structure, rock and soil mass type, multi-year average precipitation, vegetation coverage ratio and human engineering activities were put forward. The weight coefficient was determined by putting preference ratio method and entropy method into optimal combination, which was applied into the evaluation of extension theory. A new model of geological-hazard-prone area division named optimal systems weighting law was proposed. The result shows that the division of geological-hazard-prone area of Jilin Province coincides with the practical situation.

Loading Jilin Institute of Geo Environment Monitoring collaborators
Loading Jilin Institute of Geo Environment Monitoring collaborators