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Acknowledgements The research presented in this paper is supported by the Natural Science Foundation of China NO.51179023.
Journal of Geotechnical and Geoenvironmental Engineering, 2003, 2: 125-136
Journal of materials in civil engineering. 2008, 9: 571-577
Journal of Yangtze River Scientific Research Institute, 2005, 4(22): 45-51.
Journal of the Soil Mechanics and Foundations Division, 1970, 96(5): 1629-1653

Investigation on Deformation and Failure Characteristics and Stability Control of Soft Rock Roadway Surrounding Rock in Deep Coal Mine Jucai CHANGa and Guangxiang XIEb The Key Laboratory of Safe and High-efficiency Mining of Ministry of Education, Anhui University of Science and Technology, Huainan, 232001, Anhui Province, China acjcminecoal@163.com, bgxxie726@126.com Keywords: deep coal mine; soft rock roadway; laws of deformation and movement; failure characteristics; control technology Abstract.
Engineering Background The buried depth of the fire-fighting material chamber at -817 level in Wangfenggang coal mine is about 850 m.
References [1] ZHANG Can, ZHANG Nong et al: Support Technique Intensifying Soft Broken Roadway with High Ground Stress, Journal of Mining & Safety Engineering, Vol. 27 (2010), p. 13-18(in Chinese) [2] Kang Hongpu, Wang Jinhua, Lin Jjian: High Pretensioned Stress and Intensive Bolting System and Its Application in Deep Roadways, Journal of China Coal Society, Vol. 23 (2007), p. 1233-1238 (in Chinese) [3] Sun Xiaoming, HE Manchao, Jing Haihe: Research on nonlinear mechanics design method of bolt-net-anchor coupling support for deep soft rock tunnel, Rock and Soil Mechanics, Vol. 27 (2006), p. 1061-1065 (in Chinese) [4] WANG Jin-xi, LIN Ming-yue, TIAN Duan-xin, et al: Deformation characteristics of surrounding rock of broken and soft rock roadway, Mining Science and Technology, Vol. 19 (2009), p. 205-209 [5] C.
Lu: Deformational behaviour of roadways in soft rocks in underground coal mines and principles for stability control, International Journal of Rock Mechanics and Mining Sciences, Vol. 37 (2000), p. 937-946 [6] He Manchao, Xie Hoping, Peng Suping, et al: Study on Rock Mechanics in Deep Mining Engineering, Chinese Journal of Rock Mechanics and Engineering, Vol. 24 (2005), p. 2804-2812 (in Chinese) [7] Yuan Liang: Control of Surrounding Strata in Deep Mine Roadway and Practice in Huainan Area (China Coal Industry Publishing House, Beijing, 2006) (in Chinese) [8] Xie Guangxiang, Chang Jucai: Study on overcutting- bolting & grouting-backfilling concrete to control the floor heave of deep mine roadway, Journal of China Coal Society, Vol. 35 (2010), p. 1242-1246 (in Chinese)

Introduction Titanium materials have high heat resistance and high corrosion resistance.
Materials.
Chatterjee, Aero-Engine Titanium from Alloys to Composites, Materials Science Forum , 618/619 (2009),127-134
Tanaka, High Speed Milling of Titanium Alloy, Advanced Materials Research, 325 (2011), 387-392
Adamus, Stamping of titanium Sheets, Key Engineering Materials, 410/411 (2009), 279-288

Zn powder with 20 mol% of Sn powder was used as raw material and synthesized at temperature of 1,000°C under normal atmosphere.
ZnO tetrapods (T-ZnO) is one of the favorable materials that have been studied and used for many applications [2-5].
Most researchers played theirs attention on improvement sensing properties of sensor by controlling architectural defects of sensing materials [1], increased reaction rate and/or a number of adsorbed oxygen species [6], and modified the electronics state of sensor surface [6,8].
This data suggested that the T-SnZnO is a promising materials for a high temperature sensor application for detected the indoor volatile organic compounds (VOCs) [12].
Choopun: submitted to Journal of Alloys and Compounds (2013)

Using atmospheric plasma spraying it is possible to form coatings from metallic alloys, ceramic, polymer and cermet powder materials.
Materials and Methods Atmospheric plasma spraying technology (APS MF-P-1000 (GTV) unit with a F4MB-XL plasma gun (Oerlikon Metco)) was used to deposit the coatings from powder materials on grit blasted metal substrate (construction steel coupons with diameter 25.4 mm and height 5 mm).
XRD phase analysis showed that mostly all of the powder sprayed materials was under the influence of the environment during spraying.
Fauchais, Understanding plasma spraying, Journal of Physics D: Applied Physics, 37 (9) (2004) R86-R108
Balasubramanianb, Influences of atmospheric plasma spraying parameters on the porosity level of alumina coating on AZ31B magnesium alloy using response surface methodology, Progress in Natural Science: Materials International. 22 (5) (2012) 468–479.

Effects of Powdery Mill Tailings from Magnetite on Workability and Strength of Concretes CAI Ji-wei1a, WU Ji-xu1,b, LÜ Zheng-hang1,c, GAO Guang-liang1,d 1Hebei Province Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and Engineering, Hebei Polytechnic University, Tangshan 063009, China amail: caijw1-11@yahoo.com Keywords: powdery mill tailings from magnetite, manufactured fine aggregate, concrete, workability, strength Abstract.
The available utilization ways of mill tailings applied in mining and agriculture industries and production of wall building materials and decorating materials bring some economic benefit and social benefit, but the utilization percentage is still very low and the problems such as land waste, environmental pollution and ecological damage are not overcome yet.
Experimental Materials. 1) Ordinary Portland Cement (grade 42.5 MPa) from Jidong Cement Plant with specific surface area 402 m2/kg, Grade II Fly Ash (FA) from Tangshan with water demand ratio 105%, S95 ground granulated blast furnace slag (GBFS) from Xinquan with specific surface area 450 m2/kg, and coarse (C), moderate (M) and fine (F) powdery mill tailings with specific surface area 360 m2/kg, 480 m2/kg and 770 m2/kg prepared with mill tailings from magnetite ground for 40 min, 60 min and 90 min.
Journal of Wuhan University of Technology,2009,31(7):104-107 (in Chinese)
Journal of Wuhan University of Technology,2009,31(7):88-91 (in Chinese).

TC16 (Ti-2.5Al-5Mo-5V) titanium alloy is alpha + beta two-phase titanium alloys, which have good plasticity and good comprehensive mechanical properties and is often used as a fastener materials.
Numerical Simulation of Temperature Field and Thermal Stress Field in Quenching Process of TC21 Titanium Alloy Forging[J].Rare Metal Materials And Engineering, 2011,40(10):1721-1726
Materials Science and Engineering A , 419 (2006) 214–217
Materials Engineering, 2009(1):19-22
The Chinese Journal of Nonferrous Metals, 2010,20(S1)：s107-s112.

Table 1 Basic parameters of the simulating material Materials Density[g/cm3] Diameter[mm] Thickness[mm] Circular silicon pieces 1.25 19, 8.6 1, 0.44 When preparing the small circular silicon pieces, we should get 2 to 5 pieces together side by side (Fig. 1).
[2] Yin Z H, Di B R, Li X Y, et al, Progress in P-wave anisotropy technology for fracture detection, Science & Technology Review. 29 (2011) 73-79
[5] Bi G Q, Li N, Li G Y, Experimental study on characteristics of wave propagation in media containing intermittent cracks, Chinese Journal of Rock Mechanics and Engineering. 28 (2009) 3117-3123
[10] Chen Q, Liu X J, Liang L X, et al, Numerical simulation of the fractured model acoustic attenuation coefficient, Chinese Journal of Geophysics. 55 (2012) 2044-2052
[11] Wang Z Z, Wang R H, Bu Y H, et al, A new method of preparing artificial cores with certain cracks for experiment study of elastic wave propagation, Advanced Materials Research, 356 (2012) 2954-2957

Experimental procedure Experiment materials.
PCS Material preparation.
Acta Material Composite Sinica vol. 23(2006), p. 35-36, in Chinese
Journal of Materials Science & Engineering vol. 22(2004), p. 657-659, in Chinese
Journal of European Ceramics Society vol. 29(2009), p. 3091-3093.