Potential hazard analysis and risk assessment of debris flow by fuzzy modeling

2012 ◽  
Vol 64 (1) ◽  
pp. 273-282 ◽  
Author(s):  
Jeng-Wen Lin ◽  
Cheng-Wu Chen ◽  
Cheng-Yi Peng
Keyword(s):  
Risk Assessment ◽  
Debris Flow ◽  
Hazard Analysis ◽  
Fuzzy Modeling ◽  
Potential Hazard

scholarly journals Risk Assessment of An Earthquake-Collapse-Landslide Disaster Chain by Bayesian Network and Newmark Models

2019 ◽  
Vol 16 (18) ◽  
pp. 3330 ◽  
Author(s):  
Lina Han ◽  
Qing Ma ◽  
Feng Zhang ◽  
Yichen Zhang ◽  
Jiquan Zhang ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Bayesian Network ◽  
Evaluation Method ◽  
Hazard Analysis ◽  
Formation Mechanisms ◽  
Potential Hazard ◽  
Permanent Displacement ◽  
Earthquake Disaster ◽  
Disaster Chain ◽  
Landslide Disaster

Severe natural disasters and related secondary disasters are a huge menace to society. Currently, it is difficult to identify risk formation mechanisms and quantitatively evaluate the risks associated with disaster chains; thus, there is a need to further develop relevant risk assessment methods. In this research, we propose an earthquake disaster chain risk evaluation method that couples Bayesian network and Newmark models that are based on natural hazard risk formation theory with the aim of identifying the influence of earthquake disaster chains. This new method effectively considers two risk elements: hazard and vulnerability, and hazard analysis, which includes chain probability analysis and hazard intensity analysis. The chain probability of adjacent disasters was obtained from the Bayesian network model, and the permanent displacement that was applied to represent the potential hazard intensity was calculated by the Newmark model. To validate the method, the Changbai Mountain volcano earthquake–collapse–landslide disaster chain was selected as a case study. The risk assessment results showed that the high-and medium-risk zones were predominantly located within a 10 km radius of Tianchi, and that other regions within the study area were mainly associated with very low-to low-risk values. The verified results of the reported method showed that the area of the receiver operating characteristic (ROC) curve was 0.817, which indicates that the method is very effective for earthquake disaster chain risk recognition and assessment.

scholarly journals Penggunaan Job Hazard Analysis dalam Identifikasi Risiko Keselamatan Kerja pada Pengrajin Logam

2018 ◽  
Vol 2 (4) ◽  
pp. 510-519
Author(s):  
Al Asyhar Aahyu Azady ◽  
Evi Widowati ◽  
Sri Ratna Rahayu
Keyword(s):  
Risk Assessment ◽  
High Risk ◽  
Occupational Diseases ◽  
Hazard Analysis ◽  
Potential Hazard ◽  
Potential Danger ◽  
Analysis Method ◽  
Workplace Injuries ◽  
Work Accident ◽  
And Control

Abstrak Setiap tempat kerja selalu mempunyai risiko kemungkinan terjadinya kecelakaan dan penyakit akibat kerja. Pada tahun 2013 telah terjadi 406 kasus kecelakaan kerja di Kabupaten Boyolali, 372 pekerja (91,6%) berhasil sembuh, 25 pekerja (6,1%) sementara tidak mampu bekerja, 4 pekerja (0,9%) mengalami cacat, dan 5 pekerja (1,2%) meninggal dunia. Insiden kecelakaan dan cedera di tempat kerja dapat dikurangi dengan penggunaan Job Hazard Analysis. Penelitian ini dilaksanakan pada tahun 2018. Tujuan dari penelitian ini adalah untuk mengetahui potensi bahaya serta pengendalian yang tepat pada industri logam UD. A&D dengan metode Job Hazard Analysis. Jenis penelitian ini adalah deskriptif kualitatif dengan pendekatan observasional. Hasil penelitian menunjukkan terdapat 46 bahaya dan 82 risiko yang teridentifikasi. Hasil penilaian risiko terdapat 24 (29,6%) risiko rendah, 27 (32,9%) risiko sedang dan risiko tinggi berjumlah 31 (37,8%). Hasil penilaian dan pengendalian risiko dirancang dalam bentuk form Job Hazard Analysis. Kesimpulan penelitian ini adalah potensi bahaya yang ada belum dilakukan pengendalian secara optimal.   Abstract Each workplace always has a risk of possible accidents and occupational diseases. In 2013 there were 406 work accident cases in Boyolali District, 372 workers (91.6%) recovered, 25 workers (6.1%) were unable to work, 4 workers (0.9%) were disabled, and 5 workers (1.2%) died. Incidents of accidents and workplace injuries can be reduced by the use of Job Hazard Analysis. This research was conducted in 2018. The purpose of this research is to know the potential danger and proper control on UD metal industry. A & D with Job Hazard Analysis method. The type of this research is descriptive qualitative with observational approach.The results showed 46 hazards and 82 identified risks. Risk assessment results were 24 (29.6%) low risk, 27 (32.9%) medium and high risk 31 (37.8%). The results of risk assessment and control are designed in the form of Job Hazard Analysis form. The conclusion of this research is the potential hazard that has not been done optimally.  

Fuzzy Matter-Element Evaluation Method for Analysis of Debris Flow Risk Assessment

2012 ◽  
Vol 446-449 ◽  
pp. 3058-3061 ◽  
Author(s):  
Chun Tan ◽  
Jian Ping Chen ◽  
Yu Zhen Pan ◽  
Cen Cen Niu ◽  
Li Ming Xu
Keyword(s):  
Risk Assessment ◽  
Debris Flow ◽  
Information Entropy ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Practical Application ◽  
Element Analysis ◽  
Matter Element Analysis ◽  
Concept Of Information

Based on the principle of fuzzy matter-element analysis, the concept of information entropy is introduced to establish a fuzzy matter-element evaluation method. This method is utilized to comprehensively evaluate the degree of debris flow. The classifications of debris flow are regarded as the objects of matter-element and their indexes for evaluation as well as the corresponding fuzzy values are used to construct the composite fuzzy matter-elements. By calculating the relevancy the comprehensive evaluation of debris flow can be carried out. This model is applied to analyze the degree of debris flow in the practical application. The application shows that the model is effective and practical.

scholarly journals The importance of entrainment and bulking on debris flow runout modeling: examples from the Swiss Alps

2015 ◽  
Vol 15 (11) ◽  
pp. 2569-2583 ◽  
Author(s):  
F. Frank ◽  
B. W. McArdell ◽  
C. Huggel ◽  
A. Vieli
Keyword(s):  
Debris Flow ◽  
Debris Flows ◽  
Field Data ◽  
Average Rate ◽  
Hazard Analysis ◽  
Maximum Shear Stress ◽  
Empirical Relationship ◽  
Swiss Alps ◽  
Field Site ◽  
Practical Applications

Abstract. This study describes an investigation of channel-bed entrainment of sediment by debris flows. An entrainment model, developed using field data from debris flows at the Illgraben catchment, Switzerland, was incorporated into the existing RAMMS debris-flow model, which solves the 2-D shallow-water equations for granular flows. In the entrainment model, an empirical relationship between maximum shear stress and measured erosion is used to determine the maximum potential erosion depth. Additionally, the average rate of erosion, measured at the same field site, is used to constrain the erosion rate. The model predicts plausible erosion values in comparison with field data from highly erosive debris flow events at the Spreitgraben torrent channel, Switzerland in 2010, without any adjustment to the coefficients in the entrainment model. We find that by including bulking due to entrainment (e.g., by channel erosion) in runout models a more realistic flow pattern is produced than in simulations where entrainment is not included. In detail, simulations without entrainment show more lateral outflow from the channel where it has not been observed in the field. Therefore the entrainment model may be especially useful for practical applications such as hazard analysis and mapping, as well as scientific case studies of erosive debris flows.

scholarly journals Analisis Risiko Keselamatan dan Kesehatan Kerja (K3) dengan Metode Hazard Analysis (Studi Kasus pada Proyek Pembangunan Perumahan)

2020 ◽  
Vol 5 (1) ◽  
pp. 29
Author(s):  
Nidya Wisudawati ◽  
Rurry Patradhiani
Keyword(s):  
Risk Assessment ◽  
Hazard Analysis ◽  
Risk Control ◽  
Hazard Identification ◽  
Risk Level

Risiko kecelakaan kerja merupahal hal yang tak dapat dihindari dari kegiatan proyek pembangunan. PT Gran Anugerah Wijaya merupakan pengusaha pengembang perumahan yang sedang mengerjakan proyek pembangunanan 58 unit rumah tipe 36 yang berlokasi di daerah Palembang. Dari hasil pengamatan lapangan, alur proses pembangunan rumah yang dikerjakan meliputi pemasangan pondasi, pemasangan dinding, pemasangan kusen kayu, pemasangan rangka atap dan finishing. Hazard Identification, Risk Assessment dan Risk Control telah dilakukan dlaam penelitian ini. Hasil yang didapat bahwa terdapat 27 potensi risiko dengan risk level diantara rendah hinggi tinggi. Pengendalian risiko yang bisa dilakaukan untuk mengurangi bahaya kerja terhadap karyawan bangunan diantaranya substitusi, administrasi dan Alat Pelindung Diri (APD).

scholarly journals Towards increased reliability by objectification of Hazard Analysis and Risk Assessment (HARA) of automated automotive systems

2017 ◽  
Vol 99 ◽  
pp. 166-177 ◽  
Author(s):  
Siddartha Khastgir ◽  
Stewart Birrell ◽  
Gunwant Dhadyalla ◽  
Håkan Sivencrona ◽  
Paul Jennings
Keyword(s):  
Risk Assessment ◽  
Hazard Analysis ◽  
Automotive Systems
Sign in / Sign up

Export Citation Format

Share Document