Green coal mining technique integrating mining-dressing-gas draining-backfilling-mining
采-选-瓦斯抽放-回填-采一体化绿色煤炭开采技术
International Journal of Mining Science and Technology, Volume 27, Issue 1, January 2017, Pages 17-27
Jixiong Zhang, Qiang Zhang, A.J.S. (Sam) Spearing, Xiexing Miao, Qiang Sun
Abstract: Aiming to address the following major engineering issues faced by the Pingdingshan No. 12 mine: (1) difficulty in implementing auxiliary lifting because of its depth (i.e., beyond 1000 m); (2) highly gassy main coal seam with low permeability; (3) unstable overlying coal seam without suitable conditions for implementing conventional mining techniques for protective coal seam; and (4) predominant reliance on “under three” coal resources to ensure production output. 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. A system for draining gas and mining the protective seam in the rock stratum is designed and implemented based on the geological conditions. This system helps in realizing pressure relief and gas drainage from the protective seam before extraction. Accordingly, another system, which is connected to the existing production system, is established for the UDCG based on the dense medium-shallow trough process. The mixed mining workface is designed to accommodate both solid backfill and conventional fully mechanized coal mining, thereby facilitating coal mining, USCG, and backfilling. The results show that: The mixed mining workface length for the Ji15-31010 protected seam was 220 m with coal production capacity 1.2 million tons per year, while the backfill capacity of gangue was 0.5 million tons per year. The gas pressure decreased from 1.78 to 0.35 MPa, and the total amount of safely mined coal was 1.34 million tons. The process of simultaneously exploiting coal and draining gas was found to be safe, efficient, and green. This process also yielded significant economic benefits.
Mine Green Mining
矿山绿色开采
Energy Procedia, Volume 16, Part A, 2012, Pages 409-416
Hui-qi Shi
Abstract:With the mine development and utilization, the mine environment problems and subordinate geology disaster phenomenon it causes have been revealed gradually, some also lead to serious results. Therefore, the balanced relation of “resources mining - environmental protection - mining area sustainable development” is a very important topic of resource development in our country in the 21st century, named “green mining”. In accordance with this balanced relational mining area development pattern, it is called “the green mining area” pattern of the sustainable development. One of it's core contents is to be aware of “green mining”.
Coalmine Green Mining with Gangue Backfilling Technique
基于矸石回填技术的煤矿绿色开采
Procedia Environmental Sciences, Volume 10, Part B, 2011, Pages 1205-1209
Yang Guo-liang, Yang Ren-shu, Tong Qiang, Huo Chuan
Abstract:Gangue backfilling can solve the environmental pollution caused by open accumulation of gangue while significantly reducing the amount of ground settlement great value for green mining. First, using the owe design test equipment to test the mechanical properties of coal gangue; Then, according to the mechanical properties of coal gangue to improve and design the backfilling equipment; Finally, by monitoring the effect of gangue backfilling to improve backfilling technique. Through doing these works to Improve and optimize the efficiency of gangue backfilling green mining technology, solving a series of open-air environment pollution caused by open accumulation of gangue.
Study on incentive mechanisms of coal green mining
煤炭绿色开采激励机制研究
Procedia Earth and Planetary Science, Volume 1, Issue 1, September 2009, Pages 211-218
Lu Ming-yin, Zhang Zhen-fang, Meng Xing, Li Dai
Abstract: Through summing up the research situation of green mining incentive mechanism home and abroad, the obstacles which cumber the implementation of green mining from market, organization and technology in our country are analyzed. The result of the analytical model, which analyzes market obstacles, indicates that the profit margin of traditional mining is higher than that of green mining which results in the shortage of the gr een mining. Finally, the green mining incentive mechanism is constructed from three aspects including market incentive, governmental incentive and technical incentive. Specially, the governmental incentive is analyzed by game theory.
