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Construction of emergency evacuation refuge is a victims resettlement measures that the international community deal with emergency. In modern cities it is a safety shelter that people avoid major natural disasters and accidents such as earthquake, flood, fire, explosion etc. The post-disaster asylum action in Tangshan Earthquake, Wenchuan Earthquake and Yushu Earthquake show that the city must planning...
Based on the AUTOBANK Program, this paper makes the numerical simulation calculation of the seepage distribution in the Donggou tailing, getting the distribution figures about pressure head equipotential lines, velocity vector distribution and wetting front location under different conditions; On this basis, it quantitatively calculates the stability of the tailing dam using the Sweden Arc Method...
Underground shopping centres are important public underground spaces with large user flow volume, so technical measures of noise control for such spaces not only affect physical and mental health of users but also touch on whether the articulation of public address system can satisfy the requirements for safe evacuation under emergency, which are paid more and more attention to. According to the noise...
With the large-scale construction and the increase of high-rise and large space buildings in our country, high-formwork system as the support system of girder and slab was widely applied to engineering. As the design theory of high-formwork system is not mature enough and over-reliance on past construction experience when it's under construction, the security of high-formwork system can not be fully...
The concept of safe natural frequency is proposed. The problem of how to determine the safe natural frequency in Z-direction of anti-seismic structure, in order to ensure the safety of the structure, is explored in this paper. By simplifying the calculation model, the formula for calculating the safe natural frequency in Z-direction of anti-seismic structure is deduced. The value of it for two types...
The paper analyses the problems of the current domestic high-rise residential environment in safety defense, and investigates guidelines for high-rise residential crime prevention design, which based on the current situation's analysis and the defensible space theory.
In order to realize the standardization and informationization of safety evaluation, the software system of construction risk evaluation is developed based on the gray Euclid relation theory model and C/S system structure. Six modules, that are system login module, risk data management module, risk assessment module, evaluation results query module, and system management module are designed and the...
The deformation monitoring of landslide is an important content of the safety monitoring of landslide, it is one of the important tasks to make timely, reasonable and effective analysis for landslide observation data for getting the deformation regularities and the safety states of landslide, and the safety status and the stability of the landslide can be judged by the analysis results. The advanced...
Shenzhen Metro line no.5 is the longest metro line of Shenzhen in one-time investment which met with complex geological conditions, great technical difficulties and short construction period. According to the characteristics of the project, Shenzhen government broke the traditional mindset to use the BT construction model through ‘Investment and Financing-Building Delivery with Design and Construction-Return’...
It is urgent to study on groundwater environmental impact assessment of mountain tunnel projects as the growing tension between tunnel construction and groundwater environment protection. Determination the assessment scope is an essential step while few of the researches on this subject were carried out except some qualitative analysis. In this study, a preliminary exploration on how to determine...
Comparison of design methods for limit state is presented between Chinese and American reinforcement concrete design codes. Representative values of material strength which defined by two design codes are transformed using the method of the average equaled to. For medium and low strength concrete, deviation between the two is small while for high strength concrete, the values defined by American Code...
The safety grade of Long and Steep Downhill Roads (LSDRs) on mountainous expressway is determined on the basis of analysis of safety factors, and the safety evaluation index system and the weights are build. Based on the theory of grey clustering, the classic whitening weight function is improved, and a gray fixed weight-clustering evaluation model of LSDRS is established to evaluate the security...
In varied assessment work, feature reduction is a key cycle which benefits for reducing redundancy. It will improve the assessment efficiency, and reduce much burdensome statistical work. Grey theory and variable rough set theory are introduced to propose a feature reduction method. For the empty values of assessment features in past years, the grey theory based predicting method for imperfection...
The suitability of food taking besides others provisions is one of the vital elements to be considered for the high altitude mountain climbers to combat with the common symptoms of physiological changes like Acute Mountain Sickness, nauseous, breathing difficulties including appetite suppression and reduction of taste. This paper report the experiences of 2007 Malaysian Everest expedition teams with...
The road tunnel which has advantages of improving the alignment criterion, educing travel distance, protecting the natural environment is increased used in China. At present, the related domestic and foreign researches are mainly based on the design scale, lining type, construction methods and difficulty, use and so on. There is little about the length definition of road tunnel based on the drivers'...
Open classroom teaching method refers to the guiding ideology of classroom teaching which is instructed by modern scientific achievements of system theory, information theory and cybernetics. It has widely absorbed the advantages of various specific teaching methods and creatively applied to modern classroom teaching process so as to meet the requirements of passing on knowledge to students, developing...
In the bridges' entire life cycle, it is inevitable for bridges to be degraded and damaged because of the environmental factors and the conditions of usage. Taking more than 1500 concrete bridges in Beijing as the background projects, it is summarized that the typical diseases, the manifestations of functional damages and structural damages of concrete bridges. Among them, the functional injury accounted...
Based on the design of axial-flow fans and Visual Basic6.0 and AutoCAD, the designing system of axial-flow fans has been designed and developed, which can function the aerodynamic calculation of blade cascade and auto drawing, and increased the modules of blade intensity checking, thus maximizing its safety.
The concept and technique of knowledge management was applied to define, design and analyze the Aviation Human Factors Knowledge Management System in this paper. Firstly the requirements on aviation human factors KMS was analyzed and the logical structure of the KMS was proposed out meanwhile; then combining with the characteristics of aviation system and several KMS cases, the frame of aviation human...
Based on the overload-protective working demands of series JZ21 barometric press, the paper introduces the overload-protective system of Barometric Press, the core of which is pneumatic pump and safety valve. This installment and application have indicated that the system is compact in structure, steady in property and convenient for application, and the demand of overload-protection can be well met.
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