2018
DOI: 10.1155/2018/4842939
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A Computing Method for Sand Inrush Quantity through a Borehole in Longde Coal Mine

Abstract: A quicksand disaster through a borehole occurred in Longde coal mine. A lot of aeolian sand, the volume of which is between 310,000 m 3 and 380,000 m 3 , has submerged into the underground space in about 70.5 h. e volume flux of quicksand cannot be calculated accurately by the empirical method. Based on the method of fluid mechanics, an all-purpose computing method for quicksand disaster through a borehole was proposed. e result shows that the inrush volume of sand into underground space was between 310,000 m … Show more

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Cited by 4 publications
(3 citation statements)
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“…is the height of the compressed rock sample, in m. e theoretical and experimental studies on the non-Darcy seepage characteristics of a fractured coal body are based on the Forchheimer empirical formula J � av + bv 2 [31][32][33], which takes into account the inertia and turbulence effects of the permeate and is a method that accurately reflects the non-Darcy seepage state; the following relationship is satisfied between the pressure gradient zp/zx and the percolation velocity v:…”
Section: Non-darcy Effect Analysismentioning
confidence: 99%
“…is the height of the compressed rock sample, in m. e theoretical and experimental studies on the non-Darcy seepage characteristics of a fractured coal body are based on the Forchheimer empirical formula J � av + bv 2 [31][32][33], which takes into account the inertia and turbulence effects of the permeate and is a method that accurately reflects the non-Darcy seepage state; the following relationship is satisfied between the pressure gradient zp/zx and the percolation velocity v:…”
Section: Non-darcy Effect Analysismentioning
confidence: 99%
“…As for the generation of water and sand inrush disasters, scholars at home and abroad have explored this issue in various aspects [13,14]. Based on the engineering case studies, Kesseru proposed and validated a new method to distinguish the occurrence of water and sand inrush by the mine tests and failure experience [15]; Zhang and Hou summarized the four necessary influencing factors for water and sand inrush hazard by analyzing the hydrological and engineering geological conditions of shallow buried coal seam mining [16]; Dash et al concluded the prerequisites for the occurrence of sudden floods by analyzing coal mines in India [17]; Zhang and Lin put forward a calculation method applicable to the volume flux of quicksand disaster based on the case of Longde coal mine project in China [18]; according to the case study of Xiexin coal mine, Li et al proposed a water and sand control system for the mining of extrathick coal seams under unconsolidated Cenozoic alluvium [6]. However, these methods are only regularity studies and not why.…”
Section: Introductionmentioning
confidence: 99%
“…Karst tunnel water inrush is one of most common and harmful of these geological hazards [5][6][7][8][9]. According to the statistics, water inrush and other geological hazards induced by water inrush account for 77.3% of the total number of major accidents in tunnel project during the first decade of 21st century in China [10,11].…”
Section: Introductionmentioning
confidence: 99%