检索结果-南通市图书馆

Risk Analysis of geological disaster based on Urban Construction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Risk Analysis of Geological Disaster based on Urban Construc...

Decision System for geological disaster Using Artificial Neural Network and GIS

作者： ZHANG Yubin National Earthquake Response Support Service

Based on the study of the engineering construction background of Shenzhen and Wuhan,this paper puts forward the concept of dominant and recessive geological *** is clear that the underground space construction,subway construction and muck disposal are the direct risk sources of urban dominant geological *** is not only the water body itself,but also the whole ecosystem that is destroyed by land *** outburst of the dominant geological disaster and the continuity of the recessive geological disaster will cause the irreversible safety *** recessive geological disaster will eventually turn into the dominant,from risk to ***,to control the probability of urban geological disasters,the premise is to control the risk sources.

关键词： urban construction geological disaster risk control

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Decision System for Geological Disaster Using Artificial Neu...

Intelligent early-warning platform for open-pit mining: Current status and prospects

2011 4th IEEE International Conference on Computer Science and Information Technology(ICCSIT 2011)

作者： Baiyan Su and Qiang Xu State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China

geological hazards are very harmful for human life. To measure the hazards and made correct decisions,this paper designs a decision system based on artificial neural network and Geographic Information System（GIS）.To improve the performance of the neural network,a novel differential evolution algorithm is used to train the connecting weights. The system makes full use of the functions of GIS and neural network,and is capable of visualization evaluation for the hazards.

关键词： geological disaster artificial neural network GIS decision system

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Rock Mechanics Bulletin

Rock Mechanics Bulletin 2024年第1期3卷 16-36页

作者： Zhanping Song Xu Li Runke Huo Lianbaochao Liu School of Civil Engineering Xi'an University of Architecture and TechnologyXi'an710055China Shaanxi Key Lab of Geotechnical and Underground Space Engineering Xi'an710055China

As the profundity of open-pit mining operations has increased,so has the frequency of geological *** complex interaction of factors causing these disasters presents technical challenges for early warning and control ***,emergent technologies such as the internet,5G networks,and artificial intelligence provide new opportunities for constructing integrated digital early warning platforms that synthesise multifaceted monitoring data to predict and mitigate open-pit mine *** efficient Internet-mediated information integration,data from various sources can be consolidated for enhanced disaster *** paper reviews the current state of digital early warning platforms for open-pit mines using a Web of Science database search for pertinent *** framework,data layer,technology layer,and application layer of these platforms are investigated in order to identify associated technologies and *** results include:(1)Inconsistent data formats and monitoring software diminish platform workflow *** data exchange protocols and feature-rich software could increase efficiency.(2)Platforms rely on limited data types as opposed to intelligent algorithms that integrate diverse monitoring inputs into global disaster *** underutilization of advanced technologies such as artificial intelligence,the internet of things,and cloud *** calamity mechanisms and rock mechanics require additional study.

关键词： Digital early warning platform geological disaster Data mining AI Multi-source information fusion

Analysis of the Heavy Rainfall Process in Mangshi City on August 8, 2023

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Meteorological and Environmental Research 2024年第2期15卷 48-54,61页

作者： Yan YU Bowen LIU Wan GONG Shuxuan HE Lei WEI Dehong Meteorological Observatory Dehong 678400China Yunnan Meteorological Observatory Kunming 650034China Key Laboratory of Heavy Rainfall in River Basins China Meteorological AdministrationWuhan 430205China Research Center for Disastrous Weather over Hengduan Mountains&Low-Latitude Plateau China Meteorological AdministrationKunming 650034China Yunnan Institute of geological Environment Monitoring Kunming 650216China

On August 7,2023,Mangshi City,Dehong Prefecture experienced a local heavy rainstorm,and the geological disaster caused by the heavy rainfall caused casualties and property *** on the real-time observation data of automatic stations,Doppler weather radar detection and meteorological risk warning products,the disaster situation,social impact,forecast and early warning service,causes of heavy precipitation and forecast and early warning inspection were summarized and *** results show that the heavy rainfall was prominent locally,lasted for a long time and accumulated a large amount of *** were biases in model products,and it was difficult for forecasters to make subjective corrections in complex *** analysis ideas and focus points of heavy rainfall forecast,the improvement ideas and technical schemes of forecast deviation,and the improvement ideas and suggestions of services were *** provides a reference for the forecast and early warning of severe weather in the future.

关键词： Heavy rainfall Low-pressure inverted trough geological disaster Forecast deviation

Analysis and prevention measures for typical geological disasters formation and mechanisms within permafrost zone of Greater Khingan Range

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Groundwater Science and Engineering 2014年第3期2卷 85-93页

作者： BAI Yu-chun LI Yong-li DONG Xue-liang ZHAO Lei No.904 Hydrogeology and Engineering Geology Prospecting Institute of Heilongjiang Province

The types,factors and formation conditions of typical geological disasters within the permafrost zone in the Greater Khingan Range area of Heilongjiang province were analysed in the paper. The formation mechanism behind geological disasters was illustrated,and the development trend,prevention programs and effects of the typical disaster on communities,agricultural lands and landscapes were reviewed.

关键词： Permafrost geological disaster geological formation Prevention measures

Characteristics of viscous debris flow in a drainage channel with an energy dissipation structure

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Mountain Science 2016年第2期13卷 223-233页

作者： CHEN Jian-gang CHEN Xiao-qing CHEN Hua-yong ZHAO Wan-yu CAS Key Laboratory of Mountain Hazards and Earth Surface Processes Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China CAS Center for Excellence in Tibetan Plateau Earth Sciences

A new type of drainage channel with an energy dissipation structure has been proposed based on previous engineering experiences and practical requirements for hazard mitigation in earthquakeaffected *** studies were performed to determine the characteristics of viscous debris flow in a drainage channel of this type with a slope of 15%.The velocity and depth of the viscous debris flow were measured,processed,and subsequently used to characterize the viscous debris flow in the drainage *** of this experiment showed that the surface of the viscous debris flow in a smooth drainage channel was smoother than that of a similar debris flow passing through the energy dissipation section in a channel of the new type studied ***,the flow patterns in the two types of channels were similar at other *** experimental results show that the depth of the viscous debris flow downstream of the energy dissipation structure increased gradually with the length of the energy dissipation *** addition,in the smooth channel,the viscous debris-flow velocity downstream of the energy dissipation structure decreased gradually with the length of the energy dissipation ***,theviscous debris-flow depth and velocity were slightly affected by variations in the width of the energy dissipation structure when the channel slope was 15%.Finally,the energy dissipation ratio increased gradually as the length and width of the energy dissipation structure increased;the maximum energy dissipation ratio observed was 62.9%(where B = 0.6m and L/w = 6.0).

关键词： Debris flow Drainage channel Energy dissipation structure geological disaster

Experimental study on slope sliding and debris flow evolution with and without barrier

在线全文

学校读者我要写书评

暂无评论

Water Science and Engineering 2015年第1期8卷 68-77页

作者： Ji-kun Zhao Dan Wang Jia-hong Chen College of Engineering Nanjing Agricultural University Jiangsu Key Laboratory for Intelligent Agricultural Equipment Nanjing Agricultural University College of Civil Engineering Tongji University

A constitutive model on the evolution of debris flow with and without a barrier was established based on the theory of the Bingham model. A certain area of the Laoshan Mountain in Nanjing, Jiangsu Province, in China was chosen for experimental study, and the slope sliding and debris flow detection system was utilized. The change curve of the soil moisture content was attained, demonstrating that the moisture content of the shallow soil layer increases faster than that of the deep soil layer, and that the growth rate of the soil moisture content of the steep slope is large under the first weak rainfall, and that of the gentle slope is significantly affected by the second heavy rainfall. For the steep slope, slope sliding first occurs on the upper slope surface under heavy rainfall and further develops along the top platform and lower slope surface, while under weak rainfall the soil moisture content at the lower part of the slope first increases because of the high runoff velocity, meaning that failure occurring there is more serious. When a barrier was placed at a high position on a slope, debris flow was separated and distributed early and had less ability to carry solids, and the variation of the greatest depth of erosion pits on soil slopes was not significant.

关键词： Debris flow Slope sliding geological disaster Time domain reflectometry (TDR) technique Detection system Constitutive model

Types and Causes of Debris Flow Damage to Drainage Channels in the Wenchuan Earthquake Area

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2014年第6期11卷 1406-1419页

作者： CHEN Jian-gang CHEN Xiao-qing WANG Tao ZOU Yu-hua ZHONG Wei Key Laboratory of Mountain Hazards and Earth Surface Processes Chinese Academy of Sciences Institute of Mountain Hazards and Environment Chinese Academy of Sciences and Ministry of Water Conservancy

Debris flows are among the most common geological disasters in China,and have been particularly frequent in Sichuan Province since the Wenchuan earthquake on 12 May *** construction of debris flow drainage channels is a countermeasure used to distribute debris flow fans,and these channels play a critical role in the mitigation and prevention of damage resulting from debris *** field conditions,the useful life of drainage channels can be greatly shortened as a result of strong abrasions to the drainage structure caused by the debris *** investigations have shown that the types of damage to drainage channels include(a) erosion caused by hyper-concentrated silt flow,(b) impact fractures and foundation scour at the groundsills of the drainage channel,(c) destruction of the drainage channel outlet,and(d) destruction of the drainage channel caused by debris flow *** addition,based on the destruction of the drainage channel during the debris flow drainage process,a new type of drainage channel with energy dissipation components was proposed and applied in a steep,narrow gully for debris flow ***,design and engineering repair recommendations for drainage channels are provided as a reference for repairing the damage to the *** results can provide an important reference for the effective repair and optimal design of drainage channels.

关键词： Debris flow Drainage channel Damage type Wenchuan earthquake geological disaster

Research on the sudden changes and the controlling factors of deep coal mining conditions

在线全文

学校读者我要写书评

暂无评论

Journal of Coal Science & Engineering(China) 2008年第3期14卷 347-351页

作者：虎维岳董书宁 Xi'an Branch China Coal Research InstituteXi'an 710054China

It was illustrated that the mining conditions inducing disasters changed with depth both in regularity of gradual and sudden *** sudden change depth for different disaster conditions are different and controlled by different *** high temperature and its change with depth are mainly controlled by strata structures and rock heat conductiv- ity property,the high rock stress and dynamical engineering disasters and their change with depth are mainly controlled by tectonic conditions,roof strata rock property and deep rock mechanical property,coal mine water disasters and their change with depth are mainly con- trolled by rock mechanical property of coal seam floor and regional groundwater circulation conditions,gas disaster conditions and their change with depth are mainly controlled by buried conditions of coal seam and opening conditions of geological *** is men- tioned that the key point for the control of deep coal mining disaster is to clearly understand the sudden change depth of different factors causing disasters.

关键词： suddenly change controlling factor coal mining geological disaster