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Comprehensive utilization Reduction of rock waste Rock roadways replaced by coal roadways Power generation Mineral exploitation Land reclamation Civil engineering Underground treatment Fig. 2 Technical system of rock waste reduction The technology of replace coal with rock waste from the ground mainly use to fill the longwall goaf, filling mining of the mining coal pillar under buildings, water bodies and railways, roadside filling of gob-side entry driving and gob-side entry retaining.
So there are two methods to realize water preserved coal mining: the one is reasonable choice of mining area, the other is taking reasonable measures for the mining and engineering.

Kinetics analysis of anaerobic/anoxic SBR denitrifying phosphorus removal system Xinxin Jiang1, a, Fang Ma 1, b, Xiaoxin Zhang1 , Jun Yin 1,2 , Li Wei1 1 State Key Lab of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090,China 2 Jilin Province Key Laboratory of Water Pollution Control and Resources Reuse, Jilin Architectural and Civil Engineering Institute; Changchun 130021; China a xiaoyao05s@163.com, b mafang@hit.edu.cn Keywords: anaerobic/anoxic SBR (A/A SBR); denitrifying phosphorus removing bacteria (DPB); kinetic equation Abstract.

Frontiers of Architecture and Civil Engineering in China，2008，2（2）:179-183 [5]Jinyang JIANG, Wei SUN.
Engineering Fracture Mechanics, 2008(75) :4292–4308 [8]Jiang Jinyang.

An Investigation into Mechanical Properties of Self Compacting Concrete Incorporating Fly Ash and Silica Fume at Different Ages of Curing Ahmad Askari a, Mohammad Reza Sohrabi b and Yousef Rahmani c Civil Engineering Department, University of Sistan & Baluchestan, Iran aaskari@mail.usb.ac.ir, bsohrabi@hamoon.usb.ac.ir, cy.rahmani@mail.usb.ac.ir Key words: Self compacting concrete, Fly ash, Silica fume, Mechanical properties.
Consequently engineers have widely used SCC in gigantic and architecturally sophisticated structures which building them would be difficult without using this kind of concrete[3].

Optimization of exit design based on evacuation model for limited visibility Chen Hai-tao1, 2, a, Yang Peng1,3, Yu Run-cang2 1 University of Science and Technology Beijing, Civil and environmental engineering institute, Beijing, 100083, P.R.
China 3 Beijing key laboratory of information Service Engineering, Beijing 100101, P.R.

Compressive Strength of Organic Lightweight Aggregate Concrete Congmi Cheng 1, 2, a, Dagen Su2, Juan He1, Chujie Jiao1 1College of Civil Engineering, Guangzhou University, Guangzhou, 510006, P.R.
China 2College of Science and Engineering of Materials, South China University of Technology, Guangzhou 510641, P.R.

Journal of Basic Science and Engineering. 2011，19(5)：767-775 [5] Suzanne M Burwell, Edward J Anthony, Ediwin E Berry.
[9]Design specifications of engineering thermodynamics and heat transfer of civil construction.GB/T 50176-1993.

Colloidal Polystyrene-Carbon Nanotubes as Water-Based Lubricant Additive Xuefeng Li 1, a, Han Yan 2 and Shaoxian Peng 1 1School of Chemical & Environmental Engineering, Hubei University of Technology, Wuhan, 430068, China 2School of Civil Engineering, Hubei University of Technology, Wuhan 430068, China ali_xf@mail.hbut.edu.cn Key words: Carbon nanotubes; Polystyrene; Lubricant Additive; Emulsion Abstract.

Thermal-Activation & Activity Analysis of Neimenggu High Alumina Coal Gangue Haili Cheng1, a Feihua Yang2,b Jie Zhang1,c Yi Wang1,d 1 Department of Civil Engineering, North China University of Technology, Beijing 100144 China 2 State Key Laboratory of Solid Waste Reuse for Building Materials, Beijing 100041 China atkggig@sina.com bchyangfeihua@126.com czhangjie20043044@163.com dsevcents@gmail.com Keywords: high alumina coal gangue, thermal-activation, spectral analysis, PAI Abstract.
[5] Wei Guo, Dongxu Li, Jianhua Chen, Nanru Yang, Journal of Materials Science & Engineering (in Chinese)2008 Vol. 26(2):p.204-207 [6] Shuxia Feng，Peiming Wang and Xianping Liu.

Engineering practice, however, requires taking into consideration the interaction between various structural elements.
It is created for practical use in the engineering software on widely used laptop and desktop multicore computers.
These values are not used directly to solve the problem, but are auxiliary and serve for interpreting the results in terms understandable for the engineer.
Chetyrekhuzlovoy konechnyy zlement dlya modelirovaniya povedeniya tonkostennykh zhelezobetonnykh konstruktsiy [Quadrilateral finite element for analysis of thin-walled reinforced concrete structures] (2014) Magazine of Civil Engineering, 5 (49), pp. 27–36.
Metod konechnykh elementov v nelineynykh zadachakh inzhenernoy mekhaniki [Finite Element Method in Nonlinear Problems of Engineering Mechanics].