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The steel was regarded as linear elastic material and the main parameters: density 7.8×103kg/m3, the Young’s modulus 2.06×1011Pa and Poisson ratio 0.3.
Acknowledgements We are grateful for the financial supports provided by the National Natural Science Foundation of China (No. 51109143), Natural Science Foundation of Jiangsu Province (No.
Journal of Heilongjiang hydraulic engineering, Vol. 37 (2010) No.2, p.5(In Chinese)
Journal of Dalian university of technology, Vol. 45 (2005) No.5, p.730 (In Chinese)
Journal of Nanchang university, Vol. 29 (2007) No.4, p.395 (In Chinese).

The practical non viscous debris flow calculation formulate in china [6] are used to calculate as below: (1) (2) =debris flow average velocity (m/s); = the roughness coefficient of the bed; =the bed slope; =debris flow depth (m); = the concentration of debris flow , = the concentration of water ; = the concentration of debris flow solid materials.
The concentration of solid material is estimated about 2.65 m3/s.
A., Succession of desert plants on debris flow terraces, Grand Canyon, Arizona, U.S.A., Journal of Arid Environment, 36(1):67-86(1997)
Science in China Ser.E Technological Sciences Vol.46 Supp. 1-11. (2003) [4] Scott, K.V., Origins, behavior, and sedimentology of lahars and lahar-runout flows in the Toutle-Cowlitz river system.
[5] Jishan Wu, et al., Observation and Research of Debris-flow in Jiangjia Gully, Yunnan Province, Beijing, Science Press (1990).

Acknowledgements Financial supports from National Natural Science Foundation of China (50864011) and Inner Mongolia Natural Science Foundation (20080404ZD16) are gratefully acknowledged.
Adrover: Materials at High Temperatures Vol. 26 (2009), p. 31
[6] Ivana Cvijovic, Ivana Parezanovic, Michael Spiegel: Corrosion Science Vol 48 (2006), p. 980
[7] Dong Bok Lee: Journal of the Korean Institute of Metals and Materials Vol. 44 (2006), p.175
[8] Saeki I., Furuichi R., Nakamura T., Mabuchi K., Itoh M., Konno H.: Corrosion Science Vol. 40 (1998), p.191

According to air tensile test, mechanical characteristics of reinforced soil materials are shown in Table 2.
Table 1 Basic physics index of red sandstone Specific gravity Liquid limit [%] Plastic limit [%] Cohesion [kPa] Internal friction angle [º] optimum moisture content [%] Maximum dry density [g/cm3] 2.74 41.78 25.14 25 21 18.13 1.73 Table 2 Air tensile test results of reinforced soil materials Reinforced soil materials Tension of 2% strain [kN·m-1] Tension of 5% Strain [kN·m-1] Tensile strength [kN·m-1] strain under maximum load [%] Gabion mesh (2.2mm) 11.1 18.5 25.9 7.6 Gabion mesh (2.7mm) 11.6 21.2 41.8 10.4 70RE geogrid 16.6 31.0 55.3 10.0 Results and Analysis The curves between load and settlement ratio of new retaining walls are shown in Fig.4~6.
Yang: Journal of China Coal Society, Vol. 24 (1999), p. 78-81
Li: Journal of Central South University of Technology, Vol. 17 (2010)，p. 1351-1356
Li: Journal of Vibration and Shock, Vol. 29 (2010), p. 223-227.

Lo: Journal of Materials Processing Technology, Vol.105 (2000) No.1-2, pp.143-151
M'Saoubi: International Journal of Machine Tools & Manufacture, Vol.46 (2006), pp.1786-1794
Zeren: International Journal of Advanced Technology, Vol.3 (2006), pp.1786-1794
Cheng and et al: International Journal of Advanced Manufacturing Technology, Vol.32 (2005), pp.666-674
Ozel: International Journal of Machine Tools& Manufacture, Vol.46(2006), pp.518-530.

Many metallic materials and alloys are capable of reversibly absorbing large amounts of hydrogen [5-8]. alkali metals, lithium, sodium and potassium can react with hydrogen to produce the resembling NaCl structure.
This is the first time to calculate the lattice constants and density of NaHxD1-x, NaHxT1-x, NaDxT1-x(x=0.25, 0.5, 0.75), which is an important theoretical basis to study the hydrogen storage properties of metal hydride materials.
Acknowlegdgements Project supported by the Defense nuclear waste and environmental security key disciplines Research Fund (10zknk07) of Southwest University of Science and Technology and School Starts Fund (10B014) of China Wesr Normal University.
References [1]Billur Sakintuna, Farida Lamari-Darkrim and Michael Hirscher, International Journal of Hydrogen Energy. 32(9) (2007) 1121-1140
Saxena, International Journal of Hydrogen Energy. 35(11) (2010) 5454-5470

Constructivism believes that knowledge is not obtained by teachers’ teaching, but obtained through learners used the constructional method, in certain social and cultural background, using necessary learning materials, and with the help of other persons.
Conclusion Multimedia teaching makes it possible for true and natural language learning material move to the classroom.
Acknowledgement This paper is the phased result of the dynamic context structure and application study in vocational English teaching in view of adaptation theory which is the specific subjects of university English teaching study in Hunan province educational science Twelve－Five formulation of planning.
Journal of Electrochemical education in China, 2002 (2) : 8 ~ 12 [3] He Kekang.
Journal of teaching education technology research, 1997 (1) : 35-43 [4] He Gaoda.

One of the most important desity based method is called SIMP(Solid Isotropic Material with Penalization) [2].
The base material for two examples has elastic modulus and Poisson’s ratio .
Acknowledgment This research is supported by the Natural Science Foundation of China under Grant No.11272075 and the Doctoral Start Fund of Liaoning Province No.20121023.
International Journal of Solids and Structures, 2010, 47: 1618–1640
International Journal for Numerical Methods in Engineering. 1987, 24: 359~373.

Introduction The tanks are important carrier for transfer and storage of crude oil and petrochemical raw materials.
Maruyama: Journal of the Japan Petroleum Institute, vol. 46 (2003), p. 126
Amos: Materials Evaluation, vol. 54 (1996), p. 26
Tang: Journal of Chongqing University (Natural Science Edition), vol. 23, (2000), p. 4 (In Chinese).

At the same time, select the breathability packing materials.
The breathability materials can help production breathing and gaseous exchange of inside and outside the packing.
[J].Journal of Wuxi University of Light Industry, 2003, 22 (3):106-108 [2] Lv Lixin.
Journal of Agricultural Engineering,2005,21(7):175-180
Hefei: Press of University of Science and Technology of China, 2003