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From the two aspects of internal factors and external factors, this paper analyses the factors affecting the slope stability of open-pit, discusses the basic theory of slope stability analysis, and puts forward the criterion of slope stability based on the safety coefficient.
Effect factors on slope stability of open pit Factors affecting slope stability include internal factors and external factors.
The internal factors affecting slope stability include the formation and lithology, characteristics of rock structure surface, geological structure and ground stress
Lithology, including physics, chemistry, physical and mechanical properties of the composition of water, rocks, these are made of different rocks have destroyed their different characteristics[6]
External factors that affect slope stability including shock, hydrology, weathering, plant growth and human factors

The present work investigates on the mechanical properties of friction welded EN 24 steel joints.
The mechanical properties of the EN24 steel are presented in Table 1.
Table 2: Friction Welding Factors Sl.
Factors Unit Levels Low (1) Medium (2) High (3) 1.
A study of mechanical properties of friction welded mild steel to stainless steel joints.

Comparison of Conductivity of Al2O3 Nanofluids between experiments and Maxwell Model Yu jin-ze 1, a, Liu Bin2,b ,LI Zhen-liang 1,c 1 College of Mechanical Engineering, Tianjin University of Science & Technology Tianjin, P.R.C..300222 2 Tianjin Key Lab of Refrigeration Technology, Tianjin University of Commerce, Tianjin,P.R.C., 300134 a yujinze@mail.tust.cn , blbtjcu@tjcu.edu.cn, cjshlzl@tust.edu.cn Keywords: nano-fluid; thermal properties; mass fraction; diameter Abstract.
The thermal properties of nano-fluids are affected by many factors.
The results show that the diameter of the particle plays a critical role on thermal properties of the base fluid.
The impact of the different factors of nanofluid thermal properties of mass fraction, volume fraction and nanofluid particle size were analyzed, respectively.
Conclusions The conductivity of nanofluids are affected by many factors, such as the volume fraction, temperature, diameter of nanoparticle.

So the mechanical properties of materials in microns or nanometer level has aroused enthusiasm in the world.
(2) Different crystal orientations with different mechanical properties.
The finite element software ANSYS can simulate the mechanical properties of material in micro/nano level.
But it cannot reflect the factors in microcosmic
[7] Y.Liu, D.F.Chen, Measurement of Material Mechanical Properties Using Nanoindentation and Finite Element Simulation.

The degradation in toughness is definitely brought about by the CGHAZs of the welds, the size and distribution of these zones being relevant factors in the weld performance.
The intrinsic mechanical properties of these regions are determined by the microstructure, which is function of the induced thermal cycles and of the chemical composition of the parent material and of the electrodes [3-4].
Chemical composition and mechanical properties of the parent material and weld metal are indicated in Table 1.
Table 1 - Chemical composition and mechanical properties of the PM and WM.
The degradation in toughness is definitely originated by the CGHAZs of the welds, the microstructure and size of theses zones being relevant factors of the weld performance.

The heat conduction angle, angular velocity, contact pressure and other factors and its law on end face temperature distribution have also been analyzed in this paper.
Face temperature irrational rising will not only change the sealed medium physical properties, which may cause phase to change of mechanical seal faces, but also produce irrational thermal elastic deformation, which may affect seal life.
Hu Xiaoyun[6] considered the factor of heat conduction angle based on Zhu Xiaoping’s analytical solution, which made the calculting of the end face temperature distribution of mixed friction dual face mechanical seals be more accurate.
The influence factors and law on end face temperature distribution The effect of j.
The results show that w,j and Pe obviously affect end face temperature distribution.

Work performance The performance of the rubber to concrete was influenced by many factors.
Mechanical properties The study of the mechanical properties of rubber concrete was mostly about compression, splitting and flexural strengthen.
The affect of Silane coupling agent to the mechanical properties of crumb rubber cement mortar[J].
Physical mechanical properties of rubber cement concrete [D].
Physical and mechanical properties of rubber concrete [J].

During the welding process, the heat affected zone experiences a complex action of thermal cycle and dissimilar materials are usually taken as filling metals for the seam, which results in great difference between the microscopic metallurgical structure and macroscopic mechanical properties of the base material and the seam material, which further affects the anti-fracture property and the integrity of welding structure.
Mechanical Model The mechanical model of the welded joint is shown in Fig.1, including base zone (BZ), heat affected zone (HAZ) and seam zone (SZ), and the whole welded joint is assumed to a thin steel plate and plane stress model is used for analysis and calculation.
The influence of changes of Poisson's ratio on stress intensity factors is not obvious, so Poisson's ratio is 0.3.
And there are two matching factors in dissimilar steel welded joint, which are the ratio of yield strength of seam metal and base metal 1 (M1) and the ratio of yield strength of seam metal and base metal 2 (M2), and in calculation M1=0.8, M2=1.5 and M1=1.5, M2=0.8.
The material parameters of different zones in the calculation of same steel welded joint are shown in Table 1, the yield strengths of different zones of same steel welded joint according to different matching factors are shown in Table 2, the material parameters of different zones in the calculation of dissimilar steel welded joint are shown in Table 3, and the yield strengths of different zones of dissimilar steel welded joint according to different matching factors are shown in Table 4.

The appropriate surface physicochemical properties and good cell interface.
The mechanical properties and the implant site organization to match the structure strength.
At present, to activate collagen materials using growth factors, and with the collagen material combination for example has a lot of damage repair.
Recovery and mechanical properties of regenerated abdominal muscle tissue regeneration to evaluation of abdominal wall muscle tissue function, the tensile mechanical properties of abdominal wall muscle regeneration were determined.
The effects of collagen fiber orientation on the flexural properties of pericardial heterograft biomaterials.

Introduction Over the past decades, researchers have been working hard on the discovery of new natural fibre materials due to their biodegradability, low density, low cost, high specific stiffness and good mechanical properties [1].
Researchers have shown that, there are several factors influencing the flexural strength of the fibres [6].
The level of fibres contents were found to heavily affecting the flexural strength of the fibres.
[6] R.K,S.O.Z, “The effect of fibre content on mechanical properties of hemp and basalt fibre reinforced phenol foemaldehyde composites”.
[7] Jenyfer, M.B.M, J.U.P, “A Comparative Study on the Mechanical Properties of Jute and Sisal Fiber Reinforced Polymer Composites”.