• green coal mining technique integrating mining-dressing-gas

    Green coal mining technique integrating mining-dressing-gas

    Green coal mining technique integrating mining-dressing-gas draining-backfilling-mining Author links open overlay panel Zhang Jixiong a Zhang Qiang a Spearing A.J.S. (Sam) b Miao Xiexing a c Guo Shuai c Sun Qiang a

  • green coal mining technique integrating mining-dressing-gas

    Green coal mining technique integrating mining-dressing-gas

    Green coal mining technique integrating mining-dressing-gas draining-backfilling-mining Article (PDF Available) in International Journal of Mining Science and Technology 27(1) · December 2016

  • green coal mining technique integrating mining-dressing-gas

    Green coal mining technique integrating mining-dressing-gas

    This study proposes an integrated, closed-cycle mining-dressing-gas draining-backfilling-mining (MDGBM) technique. The proposed approach involves the mining of protective coal seam, underground dressing of coal and gangue (UDCG), pressure relief and gas drainage before extraction, and backfilling and mining of the protected coal seam.

  • international journal of mining science and technology

    International Journal of Mining Science and Technology

    Green coal mining technique integrating mining-dressing-gas draining-backfilling-mining Zhang Jixionga, Zhang Qianga,⇑, Spearing A.J.S. (Sam)b, Miao Xiexinga,c, Guo Shuaic, Sun Qianga a Ministry of Education’s Key Laboratory of Deep Coal Resource Mining, School of Mines, China University of Mining and Technology, Xuzhou 221116, China

  • coal dressing technology

    coal dressing technology

    Green coal mining technique integrating mining-dressing . The Ji 15 coal seam of the mine is highly gassy, has low permeability, and does not have a protective seam, which is the requisite condition for conventional mining. This study proposes a coal mining technique that integrates the processes of mining-dressing-gas draining-backfilling

  • energies | special issue : green coal mining techniques

    Energies | Special Issue : Green Coal Mining Techniques

    Solid backfill mining as a green mining method has already been successfully applied in many mine sites. Higher requirements for the backfilling materials have been put forward in special regions, such as shallow coal seams, ecologically susceptible areas, and sites with building on the surface.

  • inversion and analysis of mining subsidence by integrating

    Inversion and Analysis of Mining Subsidence by Integrating

    According to the 22201-1/2 mining plan and SAR data acquisition time, the position and progress of the working face are obtained. The working face has a strike length of ~2103.6 m, a dip length of ~311.4 m, a coal seam dip of ~1°, an average mining depth of ~260 m, and a coal seam mining thickness of ~2.5 m.

  • coalmine green mining with gangue backfilling technique

    Coalmine Green Mining with Gangue Backfilling Technique

    Research on green mining of coal resources in China; current status and future prospects[J]. Journal of Mining and Safety Engineering È2009 È26 (1): 1-14. [2]QIAN Ming-gao, MIAO Xie-xing, XU Jia-lin. Green mining of coal resources harmonizing with environment [J].Journal of

  • experimental study on mechanical behavior of a new

    Experimental Study on Mechanical Behavior of a New

    Backfilling mining method is an overlying strata control way, which is widely used in underground coal mine. This method is effective in preventing and controlling geological disasters such as surface subsidence, mine water inrush, rock burst, and other disasters. Cement-treated marine clay (CMC) is a typical porous media, which has abundant reserves and can be used as a new backfilling

  • cn1423032a - mining method for multilayer ore body

    CN1423032A - Mining method for multilayer ore body

    The invention is mining method for multi-layer mineral in underground metal mineral, the invention divides the mineral into plate district and mineral segment, and uses the mineral segment as back mining unit, it adopts downwards level big diameter deep hole side bursting and the level combined vibrant bottom structure which has no second crashing, uses vibrant train or electric locomotive to

  • an experimental study of the influence of lithology

    An experimental study of the influence of lithology

    1. Introduction. The constant and high-intensity mining of coal resources has prompted the rapid development of China's economy, while at the same time, it also leads to severe ecological problems such as surface subsidence, air pollution and water loss [1–5].

  • cn100464054c - fast spoil disposal slope protection

    CN100464054C - Fast spoil disposal slope protection

    It is characterized by that in one end of open-pit mine or its middle said invention adopts a conventional method, if the stripping and mining operation of initial stripping working face is completed, on the deposit mining direction the mining working face can be divided into left side zone, medium zone and right side zone, then they are