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The impact analysis of coal’s elastic energy on the coal and gas outburst shock wave Chengwu LI1, a, Tianbao GAO1, b, Shanyang WEI 1, c, Teng LI 1, d 1 Faculty of Resources and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China a fslcw2000@sohu.com, bgaotb2008@sina.com, cshanyang07@hotmail.com, dlitenglt2008@163.com Keywords: coal and gas outbursts; shock wave; overpressure; elastic energy; expansion energy of gas.
And its expression [10] is (1) Suppose that the coal is isotropic material and only carries the gravity stress, so its primary stress σ1 is vertical stress, and σ2, σ3 are horizontal stress and σ2=σ3.
Acknowledgements This work was financially supported by the National Eleventh Five-year Key Science & Technology Project of China (No. 2009BAK54B03), National Natural Science Foundation of China(No. 50834005) and The basic research universities special fund operations(No. 2010YZ05) References [1] Wang K, Zhou A T, Zhang J F and Zhang P: Safety Science Vol. 50(2011), P. 835 [2] FRID V: Journal of Applied Geophysics Vol. 38(1997), P. 97 [3] Pan Y, Li A W and Qi Y S: Journal of China University of Mining & Technology Vol. 19 (2009), P. 49
[15] LIAO L and SU W S: Coal Engineer Vol. s(1998), P. 26

Preparation and properties of nanocomposites based on poly(vinyl acetate) and montmorillonite organized with acrylic acid Jun Wang1, 2, a 1College of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang, 832003, China 2Xinjiang Bingtuan key Laboratory for Green Processing of Chamical Engineering, Shihezi, Xinjiang, 832003, China awangjunbayu@163.com Keywords: Nanocomposites, Emulsion copolymerization, Poly(vinyl acetate), Exfoliated montmorillonite Abstract.
Materials and methods Materials.
Cyclohexane was purchased from Tianjin Fuyu fine chemical engineering institute (Tianjin, China).
Vinyl acetate (VAc) and OP emulsifier (OP) was purchased from Tianjin Guangfu fine chemical engineering institute (Tianjin, China).
The starting materials were CaO (1.05 g), H-MMT (3.00 g) and deionized water (18.00 g) in a diameter 95 cm watchcrystal.

Dynamic properties and seismic responses of the masonry structure model strengthened with BFRP laminates XU Li-hua1,2,a, ZHANG Si1,2,b, HU Xiao-bin1,2,c, ZHANG Ming-jie1,2, YANG Fan1, CAI Yin-liang1 1, School of Civil Engineering, Wuhan University, Wuhan, Hubei 430072, China; 2, Hubei Provincial Key Laboratory of Geotechnical and Structural Engineering Safety, Wuhan University, Wuhan, Hubei 430072, China axulihuad@163.com, bzhangsi19871018@163.com, cnewhxb@sina.com Keywords: BFRP; masonry structure; modal experiment; numerical simulation; seismic response Abstract: To study the dynamic properties and seismic responses of the masonry structure strengthened with Basalt Fiber Reinforced Plastic (BFRP) laminates, modal experiment and shaking table test were performed on a two-storey and two-bay masonry structure model involving constructional columns.
The measured mechanical properties of the materials used in the test model are listed in Table 2.
[3] Papanicolaou C., Triantafillou T., Lekka M: submitted to Construction and Building Materials (2011)
(In Chinese) [6] Tianwen Wang: Civil Engineering Structural Test, Wuhan University of Technology Press, Wuhan, China (2008), in press.
(In Chinese) [8] Lihua Xu, Wanshan Zou: submitted to Engineering Journal of Wuhan University (2005).

Introduction Combined shape and gauge control is a key issue in continuous hot plate and strip rolling field.
Width and thickness of incoming material and target thickness of two test coils were the same.
Zhang, etc.: Journal of Plasticity Engineering Vol. 12 (2005), p.11 (In Chinese) [2] M.
Guo, etc.: Journal of Plasticity Engineering Vol. 16 (2009), p. 102 (In Chinese) [9] L.
Imai: Journal of Materials Processing Technology, Vol. 5 (1964), No. 44, p. 573 (In Japanese) [12] J.

MICRO-HYDRO POWER GENERATION Design and Fabrication of Micro-Hydro Turbine for Water Treatement Plant Nikhil P Patrike and Sanmaya Patro Student, Mechanical Engineering Department, Sinhgad Institute of Technology, Lonavala, Pune (M.S.).
After all these processes a water purity test is carried out by engineers and the water is then stored in three water tanks (10, 25, 20 lakhs liter respectively) and supplied to Pimpri Chinchwad and nearer area.
Hydro schemes are classified by the output power which they produce as approximately: · Large scale: 2 MW and above · Mini: 100 kW to 2 MW · Micro: 5 kW to 100 kW · Pico: less than 5 kW But the basic approach is similar for all.[3] Advantages of mini and micro hydro: In particular, the key advantages that small hydro has over wind, wave and solar power are: · A high efficiency (70 - 90%), by far the best of all energy technologies
· A good correlation with demand i.e. output is maximum in winter · It is a long-lasting and robust technology; systems can readily be engineered to last for 50 years or more
The material used for hub is mild steel.

So, the questionnaires of this study are 200 copies, the effective questionnaire of which is 151, and questionnaire recovery rate is about 75%. 2.2 definition of relevant concepts (1)what is the water and soil loss Water and soil is the foundation of survival and development of human society, and it is plays a core and key role of the whole ecosystem and its functions of play.
In general, water and soil erosion not only worsen the mountainous rural material production and living conditions but also results in the decrease of the agricultural production income, and so exacerbating the mountain rural poverty and even some areas appeared "hard farming, draft and raise difficult" situation.
(4) the soil parent material and fragile ecological environment.
Therefore, effective governance of soil and water loss problem is to adopt comprehensive governance mode based on the water and soil loss is a complex and social system engineering
(3)science make the planning of governance soil and water loss, rational utilization of land. one is to all return the area more than 25 °slope farm land to forest; Second is small watershed comprehensive governance, which is implement the strategy of regional governance, and so effectively promote the comprehensive control of soil and water loss engineering

Study on Short-term Behavior in Construction Safety Manufacturing Management Based on Rough Set Shuquan Li a and Xiaona Liu b School of Business, Tianjin University of Finance and Economics, Tianjin, China, ashuquanli@sohu.com, blxncherish@126.com, Key words: Construction safety; Short-term behavior; Rough Set Abstract.
b) Cost of non-short-term behavior Cl The cost of non-short-term behavior embodies mainly in both the spiritual and material aspects.
b) Revenue of non-short-term behavior Rl Revenue from non-short-term behavior mainly includes material rewards from Government, Architecture Industry Association, Construction Market, as well as physical income from the success of non-short-term safety management; it is mainly the benefit of good faith.
Foundation item: Supported by Tianjin Philosophy and Social Science Research Planning (TJGL08-010) References [1] Fang Dongping, Study on economic loss Construction incidents, Construction Economics, No.3 (2000), p. 13-16 [2] Fang dongping, Huang Xinyu, Jimmei Hinze, Engineering construction safety management, China Water Conservancy and Hydropower Publishing House (2003), p.102-139 [3] RowlinsonS.
What kind of security management construction business needs,Civil Engineering Journal , No.3 (2003), p.79-83 [5] Zhang Wen-xiu, Qiu Guofang.

Study on phosphorus release from sediment control by in-situ control technology Li Jun Bi 1, a, Jing Yang 2, b, Shi Quan Sun 3, c 1 Sichuan Engineering Technical College Deyang 61800, china 2 Southwest electrical design institute Chengdu 610021, china 3 Changsha university of Science and Technology Changsha 410076, china a1059686642@qq.com, b 1436710919@qq.com, cbiwenjunwu@163.com Keywords: sediment; phosphorus release; in-situ control technology.
Under certain conditions, a biological membrane layer and algae material growth in zeolite cover surface (see Fig. 3 (a)).
That blocked the material exchange of overlying water and sediment, and speed up the water purification.
Drainage engineering (the fourth edition) [M].Bei Jing: China architecture &building press, 2000
Advances in the Key Factors Affecting Enhanced Biological Phosphorus Removal.

Experimental Study on Behaviors of Unbonded Prestressed Concrete Beams Reinforced with CFRP Tendons Wenzhong Zheng1, Chongxi Bai2 and Huidong Cheng School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, PR China 1zhengwenzhong@hit.edu.cn; 2baichongxi241830@163.com Key words: unbonded CFRP tendon; prestressed concrete beam; stress increment; plastic design; moment modification Abstract: In order to research behaviors of unbonded prestressed concrete beams reinforced with CFRP tendons, static load experiments on 4 partially prestressed simple beams with unbonded CFRP tendons and 9 two spans partially prestressed concrete continuous beams with unbonded CFRP tendons were performed.
Reinforcement details of simple test beams 2.2 Properties of Material The yield strength ( yf ), the ultimate strength ( uf ) of steel bars are listed in Table 2.
Materials and mechanical properties of CFRP tendons, non- prestressed reinforcements, stirrups and detailing reinforcements for continuous test beams are the same with the ones for simple test beams.
Development of Ductility Design Guidelines for RC Beams with FRP Reinforcing Bars, Advances in Structural Engineering.

Rapid Shrinking of Porous Hydrogel Prepared by Ice Templating Eri Umebayashi 1 , Wakaaki Murai 1 , Kazuho Suguro 1 , Tomohiro Morohoshi 2 , Tsukasa Ikeda 2 , and Norihiro Kato 1,a 1 Department of Advanced Interdisciplinary Sciences, Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya 321-8585, Japan 2 Department of Material and Environmental Chemistry, Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya 321-8585, Japan a katon@cc.utsunomiya-u.ac.jp Keywords: Organic-Inorganic Hybrid, Stimuli-Responsive Gel, Thermally Sensitive, Freezing, Fast Response, Ice Template Abstract.
Introduction One of the key properties of responsive gels is to control their environmentally-responsive rates.
Experimental Section Materials NIPA and MPTMOS were respectively purchased from Wako Pure Chemical and Aldrich.