نتایج جستجو برای: excavation hazard assessment
تعداد نتایج: 621481 فیلتر نتایج به سال:
The geomechanical classification SMR (Slope Mass Rating) enables the preliminary assessment of the susceptibility of rock slopes to failure. The SMR index is obtained from Bieniawski’s basic RMR (Rock Mass Rating) through an “adjustment factor” and an “excavation factor”. Since its appearance in 1985, this classification has been used for appraisals and preliminary studies in many countries. Th...
The progress of excavation work has been regularly recorded by taking images during the excavation seasons of Finnish Jabal Haroun Project. This multitemporal archaeological imagery is collected during 1998-2003. Images have been taken daily from the archaeological excavation site, namely the monastic complex of St. Aaron located near Petra, in Jordan. The images have been taken with non-metric...
Background and aims: Falling from work surfaces at height is often known as one of the main causes of fatal occupational accidents in the construction industry. Preventing from this type of accidents is a favorable subject not only for workers and employers, but also for HSE and insurance professionals of companies. Hence, the aim of this study is to identify and rank the causes of this hazard ...
original article in order to achieve safe conditions at workplace should correctly understand the concept of hazard. in the hazard conceptual and common definition this means that dangerous event or situation that may lead to an emergency or disaster. it could also be a biological, chemical, or physical agent in (or a property of) an environment that may have an adverse health effect, or may ...
Seismic hazard assessment like many other issues in seismology is a complicated problem, which is due to a variety of parameters affecting the occurrence of an earthquake. Uncertainty, which is a result of vagueness and incompleteness of the data, should be considered in a rational way. Using fuzzy method makes it possible to allow for uncertainties to be considered. Fuzzy inference system,...
The safety of high risk jobs especially in oil refining activities is a major concern. In the present paper, the welding risks in Tehran oil refinery have been assessed using the Job Safety Analysis (JSA) and the effectiveness of the controlling methods have been investigated. A descriptive study was conducted on 33 risks of 10 welding tasks in Tehran oil refinery (north unit). After arrangi...
Background and aims: Work environments are constantly changing under the influence of various factors and newer risks are introduced. Rapid changes in science and technology, increasing the complexity of the industry, increased system integration and other factors have been shown to increase total risk in the past few decades. As well, risk management becomes increasingly critical in decreasing...
Because a biomass gasification station includes various hazard factors, hazard assessment is needed and significant. In this article, the cloud model (CM) is employed to improve set pair analysis (SPA), and a novel hazard assessment method for a biomass gasification station is proposed based on the cloud model-set pair analysis (CM-SPA). In this method, cloud weight is proposed to be the weight...
Towards Autonomous Excavation of Fragmented Rock: Experiments, Modelling, Identification and Control Joshua Alexander Marshall Master of Science (Engineering) Department of Mechanical Engineering Queen’s University August, 2001 Increased competition and recent globalization in the minerals industry has resulted in further demands for advanced mining equipment technology. The autonomous excavati...
Risk assessments for natural hazards are becoming more widely used and accepted. Using an extended definition of risk, it becomes obvious that performant procedures for vulnerability assessments are vital for the success of the risk concept. However, there are large gaps in knowledge about vulnerability. To alleviate the situation, a conceptual extension of the scope of existing and new models ...
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