Compared with mining the horizontal coal seam and gently inclined coal seam, steeply inclined and very thick coal seam mining has many differences. Since the fracture development law is not clear, resulting in the appliion effect limitation of gas extraction, prevention and control of air leakage and other technics. In order to improve the efficiency
Get PriceNumerical simulation of the migration laws of supports and surrounding rock gently inclined seams while mining. Problems such to 50% of the test values from the laboratory. 3. RESULTS ANALYSIS 3.1 Analysis on the trend of surrounding rock before supporting .
Get PriceDec 19, 2013 · Longhole caving method was used to mine gently inclined thick orebody step by step in a test stope of tin mine under complex filling body. The problem that the complex filling body around the stope affects the stability of roof thickness, chamber and spacer pillar in actual mining was investigated meanwhile, the formed goaf during mining is so
Get PriceLongwall mining method has its own advantages, such as small miningcutting ratio, the simple technique of recovery and high level of mechanization, which is the optimal method used to mine gently inclined and extremely thin iron mine. How to ensure the safety of workers and equipment during mining is the key technical process.
Get PriceF. Cai and Z. G. Liu, "Research on Similar Materials Simulation Test for Protective CoalSeams of Group B CoalSeams of Panyi Coal Mine of China" Applied
Get PriceBecause the coal seam is particularly thick and the mining intensity is large, the mining of extremely thick coal seams often causes a wide range of disturbed fractures, which in turn induces the phenomenon of strong underground pressure such as induced support crushing and water inrush. Through theoretical analysis, laboratory similarity simulation test, and other methods, this paper studies
Get Price【Abstract】Madaling landslide is a typical mining induced landslide, of which the natural slope is a gently counterinclined layered structure.In this paper, the physical modeling method was used to study the deformation process of the mining slope under the two layer mining condition and the geomechanical mode of the slope deformation was analyzed.
Get Pricewestern China, more than 50% of coal mining occurs in inclined or steeply inclined coal seams [1–3]. In recent years, with the gradual depletion of the coal resources in the eastern and western parts of China, many mining regions have begun to mine steep coal seams [4–11]. Therefore, it is crucial to
Get PriceApr 21, 2016 · Discrete element modeling of a mininginduced rock slide. JianJun Zhao 1 Email author A series of parametric simulations and laboratory tests were first performed to match the simulation results with the laboratory test results. Ju NP, Zhao JJ, Xiang XQ (2013) Formation mechanism of landslide above the mined out area in gently inclined
Get PriceMar 01, 2017 · Read "Technological aspects for underground coal gasifiion in steeply inclined thin coal seams at Zhongliangshan coal mine in China, Fuel" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publiions available at your fingertips.
Get PriceThe invention provides a manufacture method of a threedimensional simulation model used for underground mining, belonging to the manufacture of mine threedimensional models the manufacture method adopts moduletyped threedimensional structure and manufactures the landform, physiognomy, geological structure and all production systems of a certain mine into corresponding modules and
Get PriceOptimization Method for Setting Waterproof CoalRock Pillar of Gently Inclined Coal Seam Under Cenozoic Loose Aquifer. we had rock mechanics test for overburden strata of 8 coal seam at the upper section in West Mining Area of Panji No.3 Mine in Huainan Panjixieqiao Mining Area, and pumping test for the Lower Aquifer of Cenozoic loose
Get PriceResearch Article Experimental Study on LowStrength SimilarMaterial Proportioning and Properties for Coal Mining ShaojieChen, 1,2 HailongWang, 1 JunwenZhang, 3 HuilinXing, 2 andHuaiyuanWang 1 State Key Laboratory of Mine Disaster Prevention and Control, Shandong University of
Get PriceDec 19, 2017 · The similarity simulation test is based on the theory of the dynamic similarity theory of mechanical systems. It can be applied to simulating actual conditions by building a similar model according to a certain similarity ratio with similar physical and mechanical properties of materials (Yanli et al2011, Nan 2012). As one of the important
Get PriceDec 19, 2017 · The similarity simulation test is based on the theory of the dynamic similarity theory of mechanical systems. It can be applied to simulating actual conditions by building a similar model according to a certain similarity ratio with similar physical and mechanical properties of materials (Yanli et al2011, Nan 2012). As one of the important
Get PriceF. Cai and Z. G. Liu, "Research on Similar Materials Simulation Test for Protective CoalSeams of Group B CoalSeams of Panyi Coal Mine of China" Applied
Get PriceScholars'' Mine International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics 2001 Fourth International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics Mar 26th Mar 31st Seismic Response of Normally Consolidated Cohesive Soils in Gently Inclined Submerged Slopes
Get PriceABSTRACT: Strata behavior and control in inclined coal seam face are studied with the following methods: (1) field monitoring of strata behavior is carried out at a working face (2) Model test on equivalent material is made along dip direction of f
Get PriceNumerical simulation of Dahongshan Iron Ore stope structure parameter optimization based on, ZhangHui/Kunming University of Science and Technology,0/80 The Study on Panel Mining Method for Gently Inclined Multilayer Containing Vanadium Shale, LinKunFeng/Wuhan University of
Get PriceIn order to improve the coal recovery rate,taking the fully mechanized top coal caving longwall strike coal mining face in a thick and inclined seam of Wangjiashan Mine as the example,the numerical simulation and the site test combined method were applied to the study on the top coal caving technique.The study results showed that the downward equivalent coal caving method with an interval in
Get Price''Illprepared, with no suncream and little water, we set off across the gently inclined shoulder linking us to the final stages of our Lugnaquilla ascent.'' ''Pride swelled through his body as he recalled the stages of his journey, and he felt a great love for the one who had guided him.''
Get Pricewestern China, more than 50% of coal mining occurs in inclined or steeply inclined coal seams [1–3]. In recent years, with the gradual depletion of the coal resources in the eastern and western parts of China, many mining regions have begun to mine steep coal seams [4–11]. Therefore, it is crucial to
Get PriceM.S., Milad, Benmadi M., "Modeling and Simulation of Production from Commingled Multilayer Zones and Hydraulically Fractured Horizontal Wells in Unconventional Gas Reservoirs," December 2013. M.S., Odunuga, Adebusola, "Investigating Drainage Patterns of Shale Production as a
Get PriceThe principal focus of this work is on pressuretransient analysis of a finiteconductivity inclined fracture connected to a slanted wellbore, on the basis of a semianalytical model. Detailed analysis of unsteadystate pressure behavior of a fully penetrating inclined fracture in an
Get PriceCompared with mining the horizontal coal seam and gently inclined coal seam, steeply inclined and very thick coal seam mining has many differences. Since the fracture development law is not clear, resulting in the appliion effect limitation of gas extraction, prevention and control of air leakage and other technics. In order to improve the efficiency
Get Priceexperimental unit and the rainfall simulator. The inclined multilayer test cover consisted of construction sand overlying a compacted silty clay, which, in turn, overlaid crushed acid generating mine waste rock. The thickness of the sand was 30 cm, the compacted silty clay was 50 cm, and the thickness of the waste rock ranged from
Get PriceUnderground mining can caused damage by overburden strata moving. Once sweeping high layered aquifer may be result in waters flowing in underground, and threaten to coal mine production and safety (Dong and Hu 2007).There are complex reasons for the failure of waterproof coal pillar in steep coal seam other than flat seam and gently inclined coal
Get PriceScholars'' Mine International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics 2001 Fourth International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics Mar 26th Mar 31st Seismic Response of Normally Consolidated Cohesive Soils in Gently Inclined Submerged Slopes
Get PriceThe principal focus of this work is on pressuretransient analysis of a finiteconductivity inclined fracture connected to a slanted wellbore, on the basis of a semianalytical model. Detailed analysis of unsteadystate pressure behavior of a fully penetrating inclined fracture in an
Get PricePass 2019 Huawei H12322 –Highquality Latest Test Experience. There was a bit of cheese and bread, and a tin candlestick Test C1000020 Simulator Fee on the table, and a little black porter in a pintpot, All the afternoon he worked with the door locked and, as Mrs.
Get PriceCompared with mining the horizontal coal seam and gently inclined coal seam, steeply inclined and very thick coal seam mining has many differences. Since the fracture development law is not clear, resulting in the appliion effect limitation of gas extraction, prevention and control of air leakage and other technics. In order to improve the efficiency
Get PriceTrans. Nonferrous Met. Soc. China 21(2011) s529s535 Stress distribution rule of roadway affected by overhead mining in gently inclined coal seams group KANG Qinrong 1, 2, TANG Jianxin 1, 2, HU Hai 1, 2, ZHANG Weizhong 1, 3 1.
Get PriceThe progress of the mine water prevention and control on basic principles in China . Wu Qiang, Liu Shouqiang, Zeng seams to be mined are inclined or gently inclined, the regulation Coal Pillars Setting and Coal Mining test and underground exploration and mining engineering. The method can also analyze arbitrarily stratigraphic
Get PriceThis paper proposed hydraulic support longwall method for mining glacis thin orebody. The DaZhuang ore section of Guandian Ore Mining whose orebody in the line of 8＇—16＇was chosen as the research object. It applied the FLAC numerical simulation method to study the changes of surrounding rock stress in the mining face, displacement and plastic zones, and put forward the changing law of
Get PriceThe invention discloses a steep dip analog simulation experimental platform. The experimental platform comprises a bearing device (1), a model rack (2) arranged in the bearing device (1), and a rotating device which drives the model rack (2) to rotate, wherein the bearing device (1) comprises an upper horizontal slideway (11) and a lower horizontal slideway (16) which are formed in parallel
Get PriceCompared with mining the horizontal coal seam and gently inclined coal seam, steeply inclined and very thick coal seam mining has many differences. Since the fracture development law is not clear, resulting in the appliion effect limitation of gas extraction, prevention and control of air leakage and other technics. In order to improve the efficiency
Get PriceNumerical simulation of the migration laws of supports and surrounding rock gently inclined seams while mining. Problems such to 50% of the test values from the laboratory. 3. RESULTS ANALYSIS 3.1 Analysis on the trend of surrounding rock before supporting .
Get PriceDec 19, 2013 · Longhole caving method was used to mine gently inclined thick orebody step by step in a test stope of tin mine under complex filling body. The problem that the complex filling body around the stope affects the stability of roof thickness, chamber and spacer pillar in actual mining was investigated meanwhile, the formed goaf during mining is so
Get PriceLongwall mining method has its own advantages, such as small miningcutting ratio, the simple technique of recovery and high level of mechanization, which is the optimal method used to mine gently inclined and extremely thin iron mine. How to ensure the safety of workers and equipment during mining is the key technical process.
Get PriceF. Cai and Z. G. Liu, "Research on Similar Materials Simulation Test for Protective CoalSeams of Group B CoalSeams of Panyi Coal Mine of China" Applied
Get PriceBecause the coal seam is particularly thick and the mining intensity is large, the mining of extremely thick coal seams often causes a wide range of disturbed fractures, which in turn induces the phenomenon of strong underground pressure such as induced support crushing and water inrush. Through theoretical analysis, laboratory similarity simulation test, and other methods, this paper studies
Get Price【Abstract】Madaling landslide is a typical mining induced landslide, of which the natural slope is a gently counterinclined layered structure this paper, the physical modeling method was used to study the deformation process of the mining slope under the two layer mining condition and the geomechanical mode of the slope deformation was analyzed.
Get Pricewestern China, more than 50% of coal mining occurs in inclined or steeply inclined coal seams [1–3]. In recent years, with the gradual depletion of the coal resources in the eastern and western parts of China, many mining regions have begun to mine steep coal seams [4–11]. Therefore, it is crucial to
Get PriceApr 21, 2016 · Discrete element modeling of a mininginduced rock slide. JianJun Zhao 1 Email author A series of parametric simulations and laboratory tests were first performed to match the simulation results with the laboratory test results. Ju NP, Zhao JJ, Xiang XQ (2013) Formation mechanism of landslide above the mined out area in gently inclined
Get PriceMar 01, 2017 · Read "Technological aspects for underground coal gasifiion in steeply inclined thin coal seams at Zhongliangshan coal mine in China, Fuel" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publiions available at your fingertips.
Get PriceThe invention provides a manufacture method of a threedimensional simulation model used for underground mining, belonging to the manufacture of mine threedimensional models the manufacture method adopts moduletyped threedimensional structure and manufactures the landform, physiognomy, geological structure and all production systems of a certain mine into corresponding modules and
Get PriceOptimization Method for Setting Waterproof CoalRock Pillar of Gently Inclined Coal Seam Under Cenozoic Loose Aquifer. we had rock mechanics test for overburden strata of 8 coal seam at the upper section in West Mining Area of Panji No.3 Mine in Huainan Panjixieqiao Mining Area, and pumping test for the Lower Aquifer of Cenozoic loose
Get PriceResearch Article Experimental Study on LowStrength SimilarMaterial Proportioning and Properties for Coal Mining ShaojieChen, 1,2 HailongWang, 1 JunwenZhang, 3 HuilinXing, 2 andHuaiyuanWang 1 State Key Laboratory of Mine Disaster Prevention and Control, Shandong University of
Get PriceDec 19, 2017 · The similarity simulation test is based on the theory of the dynamic similarity theory of mechanical systems. It can be applied to simulating actual conditions by building a similar model according to a certain similarity ratio with similar physical and mechanical properties of materials (Yanli et al2011, Nan 2012). As one of the important
Get PriceDec 19, 2017 · The similarity simulation test is based on the theory of the dynamic similarity theory of mechanical systems. It can be applied to simulating actual conditions by building a similar model according to a certain similarity ratio with similar physical and mechanical properties of materials (Yanli et al2011, Nan 2012). As one of the important
Get PriceF. Cai and Z. G. Liu, "Research on Similar Materials Simulation Test for Protective CoalSeams of Group B CoalSeams of Panyi Coal Mine of China" Applied
Get PriceScholars'' Mine International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics 2001 Fourth International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics Mar 26th Mar 31st Seismic Response of Normally Consolidated Cohesive Soils in Gently Inclined Submerged Slopes
Get PriceABSTRACT: Strata behavior and control in inclined coal seam face are studied with the following methods: (1) field monitoring of strata behavior is carried out at a working face (2) Model test on equivalent material is made along dip direction of f
Get PriceNumerical simulation of Dahongshan Iron Ore stope structure parameter optimization based on, ZhangHui/Kunming University of Science and Technology,0/80 The Study on Panel Mining Method for Gently Inclined Multilayer Containing Vanadium Shale, LinKunFeng/Wuhan University of
Get PriceIn order to improve the coal recovery rate,taking the fully mechanized top coal caving longwall strike coal mining face in a thick and inclined seam of Wangjiashan Mine as the example,the numerical simulation and the site test combined method were applied to the study on the top coal caving technique.The study results showed that the downward equivalent coal caving method with an interval in
Get Price''Illprepared, with no suncream and little water, we set off across the gently inclined shoulder linking us to the final stages of our Lugnaquilla ascent.'' ''Pride swelled through his body as he recalled the stages of his journey, and he felt a great love for the one who had guided him.''
Get Pricewestern China, more than 50% of coal mining occurs in inclined or steeply inclined coal seams [1–3]. In recent years, with the gradual depletion of the coal resources in the eastern and western parts of China, many mining regions have begun to mine steep coal seams [4–11]. Therefore, it is crucial to
Get PriceM.S., Milad, Benmadi M., "Modeling and Simulation of Production from Commingled Multilayer Zones and Hydraulically Fractured Horizontal Wells in Unconventional Gas Reservoirs," December 2013. M.S., Odunuga, Adebusola, "Investigating Drainage Patterns of Shale Production as a
Get PriceThe principal focus of this work is on pressuretransient analysis of a finiteconductivity inclined fracture connected to a slanted wellbore, on the basis of a semianalytical model. Detailed analysis of unsteadystate pressure behavior of a fully penetrating inclined fracture in an
Get PriceCompared with mining the horizontal coal seam and gently inclined coal seam, steeply inclined and very thick coal seam mining has many differences. Since the fracture development law is not clear, resulting in the appliion effect limitation of gas extraction, prevention and control of air leakage and other technics. In order to improve the efficiency
Get Priceexperimental unit and the rainfall simulator. The inclined multilayer test cover consisted of construction sand overlying a compacted silty clay, which, in turn, overlaid crushed acid generating mine waste rock. The thickness of the sand was 30 cm, the compacted silty clay was 50 cm, and the thickness of the waste rock ranged from
Get PriceUnderground mining can caused damage by overburden strata moving. Once sweeping high layered aquifer may be result in waters flowing in underground, and threaten to coal mine production and safety (Dong and Hu 2007).There are complex reasons for the failure of waterproof coal pillar in steep coal seam other than flat seam and gently inclined coal
Get PriceScholars'' Mine International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics 2001 Fourth International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics Mar 26th Mar 31st Seismic Response of Normally Consolidated Cohesive Soils in Gently Inclined Submerged Slopes
Get PriceThe principal focus of this work is on pressuretransient analysis of a finiteconductivity inclined fracture connected to a slanted wellbore, on the basis of a semianalytical model. Detailed analysis of unsteadystate pressure behavior of a fully penetrating inclined fracture in an
Get PricePass 2019 Huawei H12322 –Highquality Latest Test Experience. There was a bit of cheese and bread, and a tin candlestick Test C1000020 Simulator Fee on the table, and a little black porter in a pintpot, All the afternoon he worked with the door locked and, as Mrs.
Get PriceCompared with mining the horizontal coal seam and gently inclined coal seam, steeply inclined and very thick coal seam mining has many differences. Since the fracture development law is not clear, resulting in the appliion effect limitation of gas extraction, prevention and control of air leakage and other technics. In order to improve the efficiency
Get PriceTrans. Nonferrous Met. Soc. China 21(2011) s529s535 Stress distribution rule of roadway affected by overhead mining in gently inclined coal seams group KANG Qinrong 1, 2, TANG Jianxin 1, 2, HU Hai 1, 2, ZHANG Weizhong 1, 3 1.
Get PriceThe progress of the mine water prevention and control on basic principles in China . Wu Qiang, Liu Shouqiang, Zeng seams to be mined are inclined or gently inclined, the regulation Coal Pillars Setting and Coal Mining test and underground exploration and mining engineering. The method can also analyze arbitrarily stratigraphic
Get PriceThis paper proposed hydraulic support longwall method for mining glacis thin orebody. The DaZhuang ore section of Guandian Ore Mining whose orebody in the line of 8＇—16＇was chosen as the research object. It applied the FLAC numerical simulation method to study the changes of surrounding rock stress in the mining face, displacement and plastic zones, and put forward the changing law of
Get PriceThe invention discloses a steep dip analog simulation experimental platform. The experimental platform comprises a bearing device (1), a model rack (2) arranged in the bearing device (1), and a rotating device which drives the model rack (2) to rotate, wherein the bearing device (1) comprises an upper horizontal slideway (11) and a lower horizontal slideway (16) which are formed in parallel
Get Price