Applied Mechanics and Materials Vols. 405-408

Abstract: The purpose of this study is to build a prediction model for refugee population in the daytime based on the investigation on refugee population in 46 villages which are subordinate to Xinyi, Shuili, and Lugu Township in Nantou County, Taiwan. In the model of multiple regression analysis, the dependent variable is refugee population in the daytime, and independent variables include residents in the evening, employee population, student population, and cost of damaged buildings in a landslide. The analysis of regression obtained the determination coefficient R² of 0.986 and F value of 814.85 which approached statistical significance (p<α = .01).

Abstract: Building is the focus of the city's comprehensive disaster prevention and mitigation. The comprehensive disaster prevention ability of the construction directly affects the safety of the people, the city and even the society as a whole. According to Civil Construction Reliability Evaluation Criteria and the Standard of Dangerous BuildingAppraisal, the evaluation index system is establisshed in this paper, which is including structure, facilities and personnel ,to evaluate the comprehensive disaster prevention ability of the construction. Also the fuzzyevaluation method is put forward to solve the complexity of the evaluation objects and the difficult quantitative of the evaluation index directly .The research results help owners and the government managers to fully understand the usage of the building, and formulate the specific prevention measures .It also provides a reference basis for the maintenance and reinforcement of building.

Abstract: Taitung County with the total area of 3,515.24 km² lies in the eastern Taiwan. The topography of hillslopes at Taitung County is quite steep combined with fragile geological structure. After Typhoon Morakot, Taimali watershed located at the southern part of Taitung County was selected as major study area. The mechanism, behavior, and scale of sediment disasters are analyzed to rule out their interaction of the factors regarding to the debris flow occurrence in Taitung area. In this study, 522 disaster prevention engineering sites were investigated from the field and analyzed by using the Multiple Linear Regression Analysis. Finally, GPS/GIS/RS integrated with the digital terrain data was used to establish risk assessment model which can be utilized as an indication of sediment disasters occurred at Taimali watershed attacked by Typhoon Morakot in 2009. The accuracy of this model estimation is more than 80%. All results established by this study can help Taitung Country set up its own disaster prevention system and keep well development of rural and city in the eastern Taiwan.

Abstract: According to the Chinese National Standard has been completed the "Provisions for design code of emergency shelter", the paper proposed designs of emergency lodging field according to refuge capacity, lodging site, fire control, evacuation and emergency supplementary facilities. The calculation of refuge capacity uses indexes of effective refuge area and per capita effective refuge area. Emergency lodging fields are divided into teams, groups, units, districts according to refuge number and residential scale, and the hierarchical control indices are issued by taking the most densely refuge tents layout as calculating. It proposes hierarchical requirements of fire compartment, fire protection distance, evacuation distance and supplementary facilities for emergency response.

Abstract: Taziping Landslide is in the border of Ganluo County. Its a medium-sized landslide performed by two slip masses, an upper one and a lower one. Now its in the stage of creep deformation, which potentially threatens people's lives and property. This paper analyses landslide geology, characteristic and creeping formation mechanism of Taziping landslide. And then evaluate its stability by transfer coefficient method. Lastly put forward the comprehensive improvement scheme, retaining project as well as surface drainage.

Abstract: Abstract: The Qionglai stone archway and stone screen wall are located in Tiantai Mountain, Sichuan Province. Due to the impact of the 5.12 Wenchuan earthquakes, the stone archway began to subside and tilt. The maximum settlement of the two columns in the northeast was 60mm and the vertical deviation was 42mm.The main ridge of the roof which was badly damaged was out of joint and began to fracture, shift and fragment. Other part also got damaged in varying degrees. Due to the special geographical environment, large-scale machinery cannot be put into use. Thus, we can only use small equipment and labor, take advantage of pulley block and set up a steel hoop to improve pillars with jacking and corrective method. At the time of repairment, it should follow the principle of "repair the old as not to change the original appearance" and use the original materials and follow the original process as much as possible so that the stone archway and stone screen wall can be in the original shape.

Abstract: The Runout Distance is One of the most Important Factors of Landslide Hazard. it Not only Controls the Hazard Area but also Influences on the Landslide Hazard Assessment. Based on the Data of Landslides Induced by the Wenchuan Earthquake, the Six Slope Structures, Including Rock and Soil Mass, Slope Type, Gradient (α), Slope Height ( h), Azimuth Difference between Slope-Aspect and Strata Trend(θ1), Difference between Slope Gradient and Obliquity of Rock Layer (θ2), and Seismic Intensity were Selected to Evaluate the Landslide Runout Distances. the Evaluation Model of Landslide Runout Distance was Proposed by the Combination of Fuzzy Mathematics and Range Analysis. the Results Indicated that it was Different that the Slope Structures Influenced on the Runout Distance in the Different Volume Scale. According to the Evaluation Model, the Typical Landslide Runout Distances were Studied, and the Evaluation Results Accord with the Actual Runout Distances.

Abstract: With so many complex influence factors of blasting flyrock, there is no critical formula for prediction the flying distance of blasting flyrock which was adapted by most of the scholars. Widely existing influential prediction formulas are mainly aimed at ordinary blasting technology, using the statistical law or mechanics analysis to get the prediction. The calculated data for flyrock distance are different distinctly. Predictive values are different largely between various formulas. Moreover, when loose blasting, the values predicted by those formulas will be larger than the actual data. This situation wastes lots of human and financial resources for blasting alert. In view of the present situation, the field experiment of loosening blasting was carried and the impacts of blasting parameters to the flyrock distance in loosening blasting were considered respectively. Some blasting parameters were regressed to get a prediction formula. The correlation analysis indicates that the formula for loosening blasting is good for flying distance.

Abstract: New wall materials are widely used in the construction industry, which have green environmental protection. But the cracking and leakage wall causes the building function decline, heat preservation and insulation failure, which hinder its comprehensive promotion. Some regularities and conclusions had been got through several researches on the engineering application of new walls anti-cracking and anti-leakage performance. Researches are based on many aspects, such as design calculations, structural measures and detecting techniques. The summary in this paper includes: material crack propagation mechanism, experimental investigation of shrinkage of concrete brick walls at different ages, new walls in-field test of surface permeability, image processing of wall crack etc.

Abstract: Debris flows are common natural hazards in China. The outbreak of debris flows in reservoir region not only affects the stability of the hydropower stations dam, but also threatens the safety of human life and their property. Therefore, hazard assessment and protection of debris flows close to the dam are necessary and important. In this paper, SPOT5 remote sensing images and DEM model and scene investigation are introduced to acquire the characteristics of debris flow gullies. Ten debris flow occurrence related factors were selected. Then, on the basic of analyzing the relationship of the major factors and fuzzification of debris flow hazard degree, the model of two-stage fuzzy synthetic evaluation (TFSE) was established for hazard assessment. The debris flow risk under different designed rainstorm frequency was calculated. By the evaluation results, we can know that with the design storm intensity increases, the risk of debris flow increases, which is consistent with the actual situation.