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With mining depth increasing, the mechanical properties of coal reservoirs and the gas migration rule are affected and changed under the effect of factors such as stress, temperature.
Therefore, exploring deformation of coal containing gas and the gas migration law under the factors such as temperature, stress has great scientific value and practical significance.
Yin Guangzhi [3] carried out the whole the stress and strain of triaxial stress thermal-hydrological-mechanical coal gas experiment using electronic precision testing machine and homemade coal rock triaxial creep gas seepage.
Experimental research on the impact of temperature on the mechanical properties of coal[J].
Experimental research on gas flow properties of coal specimens in complete stressstrain process [J].

Introduction The vibration performances and reliability of electronic components are greatly affected by the structural mechanics properties and power mechanics properties.
Dynamics analysis by FEM simulation technology is studied in order to get inherent structural properties (natural frequency and mode shape).
The inherent structural properties and variations under various stress environments gained by FEM simulation technology can evaluate environment adaptability and reliability.
Therefore, any change of structural parameters of gridded gun due to environmental factor during its work time can affect its electric parameters.
Table1 shows that modal analysis results and vibration test results are accordant essentially, but natural frequencies in simulant results are a litter higher than that of, which could be related to many factors.

The correlation between four main factors such as speed, feed, depth of cut, tool condition and responses such as surface roughness, tool tip temperature were analysed.
Surface finish is the key element affecting the machining characteristics.
Several factors influence the surface finish of machined parts such as cutting conditions, geometry of the tool, cutting fluid and chip formation [4].
The cutting tool was coated with a combination of TiN+TiCN+Al2O3 manufactured by Kyocera .TiN coating applied on substrate because of its excellent lubricant properties and corrosion resistance[10].
[10] M Sh Migranov and A Sh Makhmutova, “Wear resistance and tribological properties of cutting tool coatings”, Russian engineering research, 2007 vol 11, pp 777-780K H W seah, A Y L yong and M rahman, performance evaluation of cryogenically treated tungsten carbide cutting tool inserts, Proc.

Different combinations of production parameters (holding temperature, holding time and coiling temperature) were applied to find the best combination to achieve the aimed properties.
There are different factors affecting the cooling rate such as the quenching water flow rate, quenching water temperature, strip temperature, strip speed besides strip thickness and also the thickness of thermal barrier that is formed between the laminar quenching water and the strip surface due to the boiling water layer exist.
Fig.2 Typical Stress-Strain Diagrams of the examined samples; Transverse Sample; Thickness = 3.2 mm The following table summarizes mechanical properties and production parameters of the hot rolled strips.
Table 4 Mechanical properties and production parameters of trial The obtained ranges of tensile strength for each thickness showed high tensile strength, however some samples showed out of aim TS as due to relatively high coiling temperature.
§ The strength values of the tested hot strips produced by EZDK are generally fulfilling the requirements given in SPFH 590Y according to JIS G3134 standard however, some samples showed out of aim tensile properties attributed to relatively high coiling temperature

Their heterogeneity may be responsible for possible variations of these mechanical properties.
The idea is to link the structure and properties of cementitious materials.
For a long hydration time (α = 0.83) corresponding to a porosity in the matrix of 70%, the mechanical properties given in Table 3 are obtained.
The Cement Bound Gravel thus presents mechanical properties comparable to those of conventional cement-treated gravels used for low or moderate traffic roads.
Gholam, Modeling of mechanical properties of roller compacted concrete containing RHA using ANFIS.

The effects of rice straws/coir fibers (R/C) mass ratios on the physical (thickness swelling) and mechanical (modulus of rupture, modulus of elasticity and internal bond strength) properties of particleboard composites were investigated.
Liu et al[4] studied flexural properties of rice straw and starch composites.
Results showed that cornstarch based composites had higher flexural properties.
They affect hydration and adhesion of PVA.
The effect of these two factors on tensile strength was depicted in Fig. 3.

Based on microstructure of pores obtained from Nitrogen absorption method and mechanical testing, a numerical shrinkage model was built.
It affects the mechanical properties such as strength and modulus[2].
Besides, many complex factors also involve in.
Creep was also proved to be an important factor to explain its effects in many mathematical models [8,11].
(5) (6) where k is a shape factor.

Optimization needs a lot of on-line parameter calculation of linear motor structure,needs to find out the given parameter input case properties data output corresponding,equivalent to "create" a large number of linear motor,"measurement" performance parameters corresponding to the optimized for comparison.Here to build a new type of cylinder linear motor electromagnetic model is actually a mapping relation:variable is the main structure of the machine parameters,output for the motor that generates the thrust and starting current,the relationship between the two can be expressed as a function: (1) Among them:n is the number of turns of the coil,r0 is the coil inner diameter,g is the air gap,s is the secondary thickness,h is the secondary level,T is the motor thrust,I is the motor current.
The structure of filling functionAnalysis of the influence factors of filling effect.Function filling technology trying to "spackling" local extreme area to avoid local convergence of the algorithm,but structural ideal filling function very difficult.By introducing filling control factor,trying to construct a new filling function,due to the rapid convergence to the global optimal "escape" the search area.With the improved filling function applied to the center of gravity neighborhood estimation algorithm,using classical function verification based on the filling function of center of gravity neighborhood estimation algorithm optimization results.Through the literature data,we can construct the following filled function: (5) Among them, is the current local minimum points of ,if satisfy:1) ,2) has differentiable functions and with ,we can prove that is filling function of at the point .
Cylinder linear motor is researched in this paper,under the assumption that the motor coil symmetric section area in a certain situation,many parameters that affect the performance of the motor,there are 5 main structural parameters:the number of turns of single coil ,which determines the line diameter and current carrying capacity;coil diameter ,which determines the actual volume of motor;the air gap between the primary and secondary ,it directly affects the performance of the motor;the thickness of the secondary ,its change has certain influence on the thrust and starting current in a certain range,but too high will increase the motor's load;secondary height ,directly affect the motor thrust,the current is not affected, but also to bring their own motor load.The original data is obtained by orthogonal optimization,cylindrical linear motor parameters obtained after a range of support vector machine model as shown in table 2: Table 2.
In the parameter range of the linear motor,by the orthogonal method to construct an orthogonal test of 5 factors and 3 levels for the table as shown in table 3: Table 3 Linear motor structural parameters of factor level table Examine factors Level 1 Level 2 Level 3 turns per coil 1500 1700 2000 Coil inner diameter 15 10 20 air gap 2.5 2 3 secondary level 85 95 105 Secondary thickness 20 15 25 The focus on the structural parameters of linear motor is optimized calculation formula,and compared with the traditional orthogonal test optimization results ,the optimization results in table 4: Table 4 The optimization results compared optimization method n r0 g s h T I R Center neighborhood estimates 2120 16.84 1.61 7.68 104.6 42.104 2.891 14.564 Orthogonal optimization 2000 20 1.5 10 105 41.154 2.827 14.557 R is the ratio.Data comparison table showed:center neighborhood estimation optimization and orthogonal optimization of agreed that in the center neighborhood estimation algorithm
References [1] Ye Yunyue,Principle and application of linear motor[M],Beijing,Mechanical industry press.2000 [2] Han Pu, Dong Ze, The development and application of the optimization algorithms,computer simulation,2003,No.z1

The rock mechanical properties can be the dynamic data and the static data distinguished by the different test ways.
The data generated by the logging test are classified as dynamic rock mechanical properties, and the data provided by the triaxial test and Geological Strength Index (GSI) are classified as static rock mechanical properties.
This paper will set up a new method which integrate the logging test data and the Geological Strength Index value and can be verified by the triaxial test mean, to estimate the rock mechanical properties.
These means can be used to get message of rock mechanical properties.
Hoek-Brown failure can explain low stress area, tensile stress area and the influence aroused by the minimum principal stress affecting of the rock mass strength

In the process of making holes, the soil structure near the wall is easy to be destroyed, thus affecting the accuracy of the determination.
Otherwise, the compactor cannot advance in even speed in the process of compaction, seriously affecting the uniformity of compaction.
Soil thickness of each compacted layer is different, due to the difference of opium depth of the compactor force, soil properties, moisture content and other factors.
Furthermore, for closing wells and rain water, sewage, drainage channels, brush two layers of hot asphalt on the outer wall before filling to prevent water seepage impacting the roadbed Inspections and Assessment of the Compactness Factors and countermeasures affecting the standard dry bulk density.
Soil compaction standard should be re-scheduled when the soil properties are changing.