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Huangtupo landslide is a typical large and complex landslide in the Three Gorges Reservoir Region, and its stability can not only affect the people’s lives and property, but also concern the safety of shipping on the Yangtze River.
Numerical simulation Mechanical Model According to geographical analysis, the foreside of Riverside slumping mass I# suffers from great impact of reservoir water level fluctuations.
Therefore, the profile of Riverside slumping mass I# was selected to establish two-dimensional geo-mechanical model and conduct numerical simulation analysis.
The reason is that, the pressure of reservoir water on slide body and pore water pressure within the slide body have been taken into account during the calculation process, and the two factors have jointly affected the calculated results.
During the changing process of reservoir water level, the saturation region of landslide is greatly affected by the changing water level, while the unsaturated region is less affected by the changing water level.

Environmental factors on the durability of FRP bars The current study on durability of FRP reinforced is mainly on experiments and the accelerated corrosion test [1].
The method is to put deteriorated factors of natural environmental on the specimen in order to improve the velocity of environmental effect on the specimen properties, so as to achieve the effects of temperature, humidity effect in a short period of time, acid, alkali, salt solution and ultraviolet radiation and other environmental effects on Mechanical properties of FRP steel.
When reaching a certain number of freeze-thaw cycles, substrate and FRP fiber can strip withinternal crack, resulting in reduced FRP tensile strength and other mechanical properties.
In addition, there are significant effects of environmental temperature and solution concentration on durability of FRP bars. 2.3Simulation aging experiment Simulation aging experiment considers effect factors such as temperature, humidity, ultraviolet radiation and other environmental on the FRP bar, tries the specific parameters such as table 1.
The effect of material degradation on bond properties of FRP reinforcing bars in concrete[J] .

All these landslides gave much loss of life and property.
Table 6 Factors of safety of bedding rock slopes with different angles of dip when water level rose angles of dip 6° 7° 8° 9° 10° 11° 12° 13° 14° factors of safety 1.946 1.932 1.921 1.908 1.922 1.931 1.944 1.986 2.014 Table 7 Factors of safety of bedding rock slopes with different angles of dip when water level fell angles of dip 6° 7° 8° 9° 10° 11° 12° 13° 14° factors of safety 2.143 2.155 2.217 2.276 2.253 2.245 2.235 2.220 2.209 By the results in Table 6 and Table 7, the curves of factors of safety vs. angles of dip when water level rose and fell were obtained and shown in Fig. 5 and Fig. 6.
Curve of factors of safety vs. angles of Fig. 6.
The factors of safety vary with different angles of dip.
The curves of factors of safety vs. angles of dip are not monotonic

In the following section the performance of different suture material has been discussed in relation to structural factors, knot factors and material factors.
Structural factors.
Knot related factors.
Material factors.
Mechanical Properties of Implant Materials.

In the case of gear fatigue strength design, each country has developed its own standards in addition to the ISO, which provides methods for calculating bending stress and determining the factors affecting stress and fatigue strength [9,11].
For instance, in the bending fatigue strength design of gears, the standards present methods for calculating the bending stress and determining the factors affecting the tooth root stress and fatigue strength [9,11].
If fatigue crack initiation or crack arrest is set as the deciding criterion for fatigue fracture, then the fatigue strength is determined by the mechanical properties of the material and the mechanical conditions within a small range near the critical point.
Thus, the stress gradient can be used as an index to evaluate the mechanical properties at a critical point.
Notches, nominal stresses, fatigue strength reduction factors and constant/ variable amplitude multiaxial fatigue loading.

acostanza@ing.uniroma2.it, belisa.tata@uniroma2.it,cdiegocio92@gmail.com Keywords: Explosion Welding, Dissimilar joining welding, Mechanical properties Abstract.
Demir, An investigation of mechanical and metallurgical properties of explosive welded aluminum-dual phase steel, Mater.
Zhang, Microstructure and mechanical properties of Cp-Ti/X65 bimetallic sheets fabricated by explosive welding and hot rolling, Mater.
Demir, An investigation of mechanical and metallurgical properties of explosive welded aluminium–dual phase steel, Mater.
Pavliukova, Structural and mechanical properties of metallic–intermetallic laminate composites produced by explosive welding and annealing, Mater.

Therefore, calculation formula of fracture zone length should include this factor, fracture radius under coupling charge condition is： （5） （6） （7） （8） Fracture radius under decoupling charge condition is： （9） In the above formula,The value of should consider the physical and mechanical properties of deep rock mass and selected through experiment.
Deep loose blasting design parameters under high stress （1） Blasthole diameter[5]-[10] The size of diameter boreholes directly affect the drilling efficiency,the number of full-face shot hole,explosives consumption and blasting rock fragmentation.The increasing of blasthole diameter can reduce the number of full-face shot hole,The energy of the kits concentrates relatively,then the detonation stability corresponding increases.
Combine the mine site conditions in the selection blasthole diameter,Considering the section size, explosive performance, drilling speed and other factors complexly.
（2） Shot hole depth Blast hole depth is an important blasting parameters in the underground mining, affecting the workload of each excavation cycle of each process, completion time and schedule, and the effectiveness and the blasting material consumption.A reasonable shot hole depth should be determined by labor organization, technical performance rig, drilling speed, the mechanical properties of rocks, coal seam condition[5]-[10]
Reference [1] Li Xibing, Li Diyuan, Guo Lei, Ye Zhouyuan, Study on mechanical response of highly-stressed pillars in deep mining under dynamic disturbance[J].

In this paper, the effect of concentration, molecular weight and temperature on the flow properties of heterocyclic aramid dope was studied.
Fig.1 The effect of temperature on the flow curve of heterocyclic aramid solution, c=4% The solution temperature is one of the most important factors affecting its flow behavior.
Improving the molecular weight of heterocyclic aramid is a good way to prepare heterocyclic aramid fiber with better mechanical properties.
Among the three factors, the influence of the heterocyclic aramid molecular weight and concentration was stronger than that of temperature.
Assessment of compressive properties of high performance organic fibers.

The change in the mechanical properties of oriented composites is determined.
The most important factor determining the properties of dispersion-filled polymers is their adhesion to the surface of a solid (filler), and in the vast majority of cases, the mechanical properties are higher, the smaller the particle size of the dispersed phase.
The mechanical properties of the oriented polymer pomposities were determined from tensile test with used Instron-1122.
It was noted in the Introduction that the most important factor determining the properties of dispersive-filled polymers is their adhesion to the surface of the filler.
Beetz, Mechanical properties of vapour-grown carbon fibres, Journal of Physics D: Applied Physics. 20 (1987) 292-297

The nature of buffer system is a very important factor of determining the dynamic properties for the success of docking operation in space.
Certain FE modeling parameters, such as material properties at high strain rates, depend on experimental data, but since the FE simulations are not based on curve-fits to impact test data, simulation results are not affected by possible experimental error in some trials in a set of test data.
Table 2 gives typical mechanical properties of aluminum.
Table 2 Mechanical properties of aluminum Density (kg∙m-3) 2740 Young’s modulus (Gpa) 71.705 Poisson’s ratio 0.33 Meshing.
International Journal of Mechanical Sciences, 2006, 48: 33-43.