2018
DOI: 10.1007/s11027-018-9816-x
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On the mitigating environmental aspects of a vertical well in underground coal gasification method

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Cited by 12 publications
(5 citation statements)
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“…With the consumption of coal resources, its mining depth and difficulty are increasing, accompanied by higher ground temperature. At the same time, new technologies are becoming increasingly mature, such as underground coal gasification and coalbed methane heat injection exploitation proposed for mining the residual coal, reducing transportation costs and efficiently recovering energy 1 , 2 . In the mining process of coal resources under a different high-temperature environment, the main difficulty was the uneven heating of coal seam, which will lead to the difficulty in predicting the germination, expansion, and penetration of internal cracks, and ultimately result in the difficulty in predicting the subsidence law of overburden rock, the displacement direction of the coal seam, and even the stability of surrounding rock of mining shaft.…”
Section: Introductionmentioning
confidence: 99%
“…With the consumption of coal resources, its mining depth and difficulty are increasing, accompanied by higher ground temperature. At the same time, new technologies are becoming increasingly mature, such as underground coal gasification and coalbed methane heat injection exploitation proposed for mining the residual coal, reducing transportation costs and efficiently recovering energy 1 , 2 . In the mining process of coal resources under a different high-temperature environment, the main difficulty was the uneven heating of coal seam, which will lead to the difficulty in predicting the germination, expansion, and penetration of internal cracks, and ultimately result in the difficulty in predicting the subsidence law of overburden rock, the displacement direction of the coal seam, and even the stability of surrounding rock of mining shaft.…”
Section: Introductionmentioning
confidence: 99%
“…Different from coal surface gasification, UCG technology ignites coal at the coal seam to form a gasifier. In the process of coal gasification, the temperature of combustible gas in the cavity will exceed 1000℃ [6][7][8] . This kind of ultra-high temperature will change the physical and chemical properties of coal seam and surrounding rock, and affect the stability of UCG process [9] .…”
Section: Introductionmentioning
confidence: 99%
“…Currently, there is sufficient number of studies analyzing the features of design and technological solutions in terms of expediency of underground gas generator tightness [58][59][60][61], methods of supply and directionality of blow flows with the provided adaptivity and intensification of the processes of coal seam gasification [62][63][64][65] including controlled retracting injection point (CRIP) system [66,67], influence of mining and geological conditions of coal seam occurrence on the underground gasification process [68][69][70][71][72], and influences of underground coal gasification on the environment [46,58,[73][74][75][76].…”
Section: Introductionmentioning
confidence: 99%