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Abstract. A physical simulation test system was designed to study the mechanism of water inrush through the mine floor. The results showed that vertical stress in the floor first increased as the mining face approached, then decreased after the face had passed, and finally returned to near its original state as the mine roof falls.
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This paper considers the complexity in resolving the conflicts between mine drainage, water supply, and environmental protection for the coal basin of North China, and presents a management optimization framework that addresses these multiple conflicting issues simultaneously in the most cost ...
Radiologist, Department of Radiology, Jiulishan Coal Mine Hospital December 1997 – September 2001 Chairman and Radiologist, Department of Radiology, Qinyang Hospital of Traditional Chinese Medicine
Abstract. A conceptual framework for characterization of water bursting and discharge into underground mines with multilayered groundwater flow systems is presented, based on the features of the site conditions and analyses of the water bursting and mine inundation events of the North China coal basin.
The paper studied the goaf features and goaf gas accumulation status of the fully mechanized top coal caving mining face in Jining No.3 Coal Mine and studied the gas distribution and migration law in the goaf.The paper analyzed the meteorological parameters and other variation obviously affected to the gas abnormal emission from the goaf.The quantitative analysis was conducted in the paper.A ...
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With the mine shafts section and length increasing constantly, artificial shaft driving speed does not meet the need of modern large coal mines production and construction, using a set of comprehensive mechanized equipment to drive shaft is imperative.
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Abstract. In this study, a new approach is proposed and developed for evaluating the comprehensive outburst index (range between 0 and 100), which is a quantitative assessment approach and will enable us to better understand the risk degree of coal and gas outburst in coal mines.
In Table 2, geological data for another five working faces of different mines are given, and by means of the 13 trained FIS rules (Figure 6B) we can obtain the reasoning results of the water inrush indexes corresponding to these five working faces (see Table 3).
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Numerical modeling of time-dependent closure of coal seam artificial fractures ... Based on comprehensive gas drainage monitoring data in underground coal mines, the ... Jiulishan Colliery, Jiaozuo Coal Group in China, and the technical data to be analyzed.
Geographical Information Management System for Jiulishan… The geographical information management system for Jiulishan Coal Mine is ... map,coal and gas outburst regional distribution map,and adding other data of text ...
The heterogenous of karst groundwater is depend on the heterogenous of karst de ... Mines in the zones are liably water inrushed and having high inrush frequency. 3. ... Jiulishan mine inrush amoount was 240m3 I min at No.21 track in The zone runs
Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards. 1997 - 2018 Current editor(s): ... a case study in the Jiulishan Mine with strong coal and gas outburst dangers pp. 1475-1493 ... Florimond De Smedt, ...
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With the $16-billion Adani coal mine dividing the Australian public, The Wire looks at . ... Mapa De La Mina De Carbón De Jiulishan Jiaozuo Henan Jiaozuo; Mina Adani Coal Indonesia ... y desarrollo, producción, ventas y servicio también. En los últimos 30 años, nos dedicamos a la producción de equipos de minería, máquinas de ...
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Research output Architecture, stress state and permeability of a fault zone in Jiulishan coal mine in China: Implication for coal and gas outbursts
A physical simulation test system was designed to study the mechanism of water inrush through the mine floor. The results showed that vertical stress in the floor first increased as the mining ...
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The movement and distribution of methane in coalmine roadways are major issues relating to coalmine safety. Once high concentrations of methane accumulate in downward ventilated tilted roadways, the movement of methane can be very special.
1 A simulation testing method of gas de- ... 1.1 Sample selection The sample was fetched from Jiulishan mine in Jiaozuo, the coal was anthracite, belonged to the in-tense outburst seam, with the characteristics of high initial desorption rate and attenuation speed. 1.2 Test device
With the mine shafts section and length increasing constantly, artificial shaft driving speed does not meet the need of modern large coal mines production and construction, using a set of comprehensive mechanized equipment to drive shaft is imperative. The length of bedrock section of auxiliary inclined shaft in Hecaogou mine is 1533.7m. The area of driving section is 21.6m2, belongs to large ...
Research into comprehensive gas extraction technology of single coal seams with low permeability in the Jiaozuo coal mining area
Ve el perfil de Elizabeth LiPeng Wang en LinkedIn, la mayor red profesional del mundo. Elizabeth LiPeng tiene 9 empleos en su perfil. ... Shadow the engineers to inspect the safety engineering systems of Jiulishan Coal Mine. Interpreter / Translator Simard and Associates LTD. julio de 2014 – febrero de …
On 27th October 2011, at 0:36 a.m., a coal and gas outburst disaster occurred at the drilling site in the 16,031 roadway of Jiulishan mine, in which 18 people died and 5 people were injured. The outburst coal mass was 3246 tons and the outburst gas volume was 291,200 m 3 .
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Measurement of pressure drop in drainage boreholes and its effects on the performance of coal seam gas extraction: A case study in the Jiulishan Mine with strong coal and gas outburst dangers
'Departamento de Ingeniería Geológica y Minera.ETS de Ingenieros de Minas y Energía, Universidad Politéncia de ... mine or a working face should take outburst prevention measures. 2. Currentoutburstproblems in China ... 2 Jiulishan coal mine, Henan Province 27 October 2011 18 3.246 x …
