MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Mining of jointed granite
Investigation of mechanical properties of jointed granite
2020年2月1日 In this study the mechanical properties of laboratory scale jointed granite with both planar and nonplanar joints of different joint configurations are investigated using the 2014年7月1日 We investigated the complete stress–strain response of artificially jointed granitic rock specimens with two joint sets The behaviour of these jointed samples is a potential Strength and dilation of jointed granite specimens in servo 2024年1月31日 To investigate the timedependent failure characteristics and mechanisms of jointed rock in deep underground environment, a series of true triaxial singlestep creep tests Timedependent failure characteristics of natural jointed granite 2024年2月9日 This study conducts uniaxial compression tests on granite samples with prefabricated fissures to investigate the damage mechanism of granite containing non Study on the damage mechanism of granite containing
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Failure Modes of Jointed Granite Subjected to Weak
2023年8月17日 Postpeak granite specimens with joints dipping at 60° are found to be the most susceptible to external dynamic disturbance but release less kinetic energy Specimens with 2017年5月1日 To investigate the strength and failure characteristics of rock mass, 3D discrete element method (DEM) is used in this study to conduct numerous simulated true triaxial Triaxial strength and deformability of intact and increasingly jointed 2017年5月1日 Triaxial strength tests were performed on artificially jointed standardsize granite specimens with two subvertical and three subhorizontal (2+3) joints A fully servocontrolled Triaxial strength and deformability of intact and increasingly jointed Laboratory tests were conducted to measure the mechanical and transport properties of a 1 m diameter by 2 m high specimen of jointed granitic rock Uniaxial loading was applied and radialElastic and transport properties of an in situ jointed granite
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Dynamic mechanical behavior and cracking mechanism of crossjointed
2023年1月1日 In this article, the dynamic mechanical and cracking behaviors of the jointed surrounding rock of the cavern were investigated experimentally by testing crossjointed 2024年4月1日 Given the ongoing socioeconomic development, the depth of China’s underground construction continues to increase, including underground mine projects, hydropower projects, deep buried tunnel projects, etc [1], [2], [3], [4]These projects require construction in deeplyburied masses, and one of the most important geological characteristics Triaxial experimental study of mechanical behavior of non 2014年7月1日 Strength and dilation of jointed granite specimens in servocontrolled triaxial tests Author links open overlay panel J Arzúa a, LR Alejano a, G Walton b Show more Add to Mendeley Proceedings of the 6th international symposium on ground support in mining and civil engineering construction, Cape Town; 2008, p 37–60 Google ScholarStrength and dilation of jointed granite specimens in servo 2017年5月1日 Alejano et al 21, 22 conducted extensive laboratory triaxial tests on both intact and jointed Blanco Mera granite samples and concluded that both the strength and deformation modulus of the Triaxial strength and deformability of intact and increasingly jointed
Elastic and transport properties of an in situ jointed granite
DOI: 101016/01489062(77)905605 Corpus ID: ; Elastic and transport properties of an in situ jointed granite @article{Pratt1977ElasticAT, title={Elastic and transport properties of an in situ jointed granite}, author={Howard R Pratt and H S Swolfs and W F Brace and Alan D Black and John W Handin}, journal={International Journal of Rock Mechanics and Mining 2020年2月1日 Joint waviness is one of the important parameters of joint that need to be considered in civil and mining engineering design of structures built in or on jointed rock masses However, this parameter is often overlooked by designers In this study the mechanical properties of laboratory scale jointed granite with both planar and nonplanar joints of different joint Investigation of mechanical properties of jointed granite 2024年5月8日 The multijointed rock mass (MJRM) in mining, tunnel and underground engineering is prone to fracture and destabilization under the disturbance of blastinginduced dynamic wave Study on dynamic mechanical properties of the MJRM under impact loading contributes to improving the stability of rock mass during engineering activities A continuous Numerical study on dynamic mechanical properties of multijointed 2017年5月1日 The Hoek–Brown failure criterion is an empirical relation that characterizes the stress conditions that lead to failure in intact rock and rock masses 1, 2, 3 Unlike the also popular MohrCoulomb failure criterion, it is nonlinear, and so better reflects rock strength as derived from laboratory triaxial tests However, the main breakthrough of the HoekBrown approach was the Triaxial strength and deformability of intact and increasingly jointed
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Strength and dilation of jointed granite specimens in servo
2014年7月1日 We investigated the complete stress–strain response of artificially jointed granitic rock specimens with two joint sets A series of confined compressive tests on these jointed rock specimens were performed in a fully servocontrolled press Elastic, strength and postfailure parameters were calculated and analysed, with special attention paid to the dilation angle2023年8月17日 Heat transfer in jointed rock masses exhibits characteristics of discontinuous, heterogeneous, and anisotropic due to the effects of rock discontinuities In this work, thermal contact resistance (TCR) evolution of granite joints under normal stress was investigated A novel method was proposed for the measurement of TCR for rough rock joints A numerical Thermal Contact Resistance of Granite Joints Under Normal 2014年7月1日 Alejano et al 21, 22 conducted extensive laboratory triaxial tests on both intact and jointed Blanco Mera granite samples and concluded that both the strength and deformation modulus of the Strength and dilation of jointed granite specimens in2023年11月27日 The test results show that lateral stress can enhance the shear strength of intact granite and hard jointed granite but has little effect on that of artificial jointed granite Stability and deformation evolution analysis of karstified slope subjected to underground mining based on HoekBrown failure criterion Bull Eng Geol Environ 82(5):1 Effect of lateral stress on shear strength of jointed hard rocks
Dynamic properties and failure mechanism of granite with
2023年9月1日 Granite from an underground powerhouse of Shuangjiangkou was selected for use in the tests reported here Moreover, the specimens were checked to ensure their integrity and uniformity met the necessary test requirements The average density and Pwave velocity of the granite were determined to be 2650 kg/m 3 and 3962 m/s, respectively Its 2017年5月1日 Triaxial strength tests were performed on artificially jointed standardsize granite specimens with two subvertical and three subhorizontal (2+3) jointsA fully servocontrolled press was used to load the samples and attain residual strengthThese tests add to an existing test database for intact and artificially jointed (1+2 joints) samples of the same rockTriaxial strength and deformability of intact and increasingly jointed 2021年5月1日 Qin et al (2020) found that hightemperature reduced the velocity of longitudinal waves in granite After 400 ℃, softening characteristics appeared, 600 ℃ was the threshold temperature of Fracture Mechanics Behavior of Jointed Granite Exposed to DOI: 101016/01489062(79)911975 Corpus ID: ; The permeability of whole and jointed Barre Granite @article{Kranzz1979ThePO, title={The permeability of whole and jointed Barre Granite}, author={R L Kranzz and Arthur D Frankel and Terry Engelder and Christopher H Scholz}, journal={International Journal of Rock Mechanics and Mining Sciences \ The permeability of whole and jointed Barre Granite
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(PDF) The permeability of whole and jointed Barre Granite
1979年8月1日 The permeability of whole and jointed Barre granite was measured at pressures up to 2 kbars Jointed samples were actually split cylinders joined by surfaces with controlled surface roughnessDOI: 101016/JIJRMMS201404001 Corpus ID: ; Strength and dilation of jointed granite specimens in servocontrolled triaxial tests @article{Arzua2014StrengthAD, title={Strength and dilation of jointed granite specimens in servocontrolled triaxial tests}, author={Javier Arzua and Leandro R Alejano and Gabriel Walton}, journal={International Journal of Rock Strength and dilation of jointed granite specimens in servo 1979年8月1日 The permeability of whole and jointed Barre granite was measured at pressures up to 2 kbars Jointed samples were actually split cylinders joined by surfaces with controlled surface roughness Samples with induced tension fractures were also measured The permeability of the whole rock ranged from about 10 −6 to 10 −7 darciesThe permeability of whole and jointed Barre Granite2018年6月22日 The mechanical behaviors of intact and jointed Blanco Mera granite are studied using the latticespringbased synthetic rock mass (LSSRM) modeling approachInvestigation of Strength and Deformation Behaviors of
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Tingting LIU Doctor of Engineering Wuhan University of
In this paper, a series of triaxial tests were conducted to investigate the strength, deformation characteristics, and failure behavior of nonpersistent jointed granite specimens subjected to 2020年1月6日 Joint waviness is one of the important parameters of joint that need to be considered in civil and mining engineering design of structures built in or on jointed rock massesInvestigation of mechanical properties of jointed granite 2022年8月12日 Fracture Mechanics Behavior of Jointed Granite Exposed to High Temperatures Fei Zhao1 Zhenming Shi1 Qiang Sun2,3 Received: 11 July 2020 / Accepted: 2 February 2021 / Published online: 16 February 2021 the deep mining of mine rock * Qiang Sun 1 School of Civil Engineering, Tongji University,Fracture Mechanics Behavior of Jointed Granite Exposed 2013年7月1日 Triaxial strength tests were performed on intact (Alejano and Arzúa, 2013) and artificially jointed standardsize Blanco Mera granite specimens Two types of jointed patterns were then tested Dilation in granite during servocontrolled triaxial strength tests
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Strength and failure characteristics of jointed marble under
2019年10月24日 The rock structure and threedimensional stress state play a vital role in the mechanical behaviour of rock masses Here, a series of true triaxial compression tests (σ1 > σ2 > σ3) are conducted on jointed marble (50 × 50 × 100 mm3) containing a natural stiff joint, taken from the China Jinping Underground Laboratory (CJPLII) project The purposes of this study 2023年10月31日 Zhao et al 15 studied the mechanical characteristics of jointed granite under high temperatures and analyzed the correlation between the failure mechanism of the rock mass with temperature and Mechanical characteristics and energy evolution in a rock 2024年1月31日 To investigate the timedependent characteristics of jointed rock masses, a series of singlestep true triaxial creep tests were conducted on natural jointed granite samples under different dip Timedependent failure characteristics of natural jointed granite 2023年11月24日 To investigate the shear failure mechanism and precursory characteristics of jointed rocks under cyclic disturbances, conventional and disturbed shear tests were conducted on jointed granite under different stress conditions The effects of the disturbance and normal stress on evolution of characteristic parameters such as AE energy rate, energy release rate, The weakening effect on shear behavior of granite with
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Dilation in granite during servocontrolled triaxial strength
DOI: 101016/JIJRMMS201302007 Corpus ID: ; Dilation in granite during servocontrolled triaxial strength tests @article{Arzua2013DilationIG, title={Dilation in granite during servocontrolled triaxial strength tests}, author={Javier Arzua and Leandro R Alejano}, journal={International Journal of Rock Mechanics and Mining Sciences}, year={2013}, 2022年12月9日 In this study, LSDYNA software was used to simulate the blasting process of jointed granite under different static stresses The influence of joint length and relative position and initial stress in the rock mass on the blasting effect was analyzed Samples from representative sections of the mine (mainly granite) were selected for Study on Blasting Effect Optimization to Promote Sustainable Mining 2023年11月28日 This study examines the fracture mechanism of cracks and the final blasting effects on defective rock masses under blasting loads The failure processes of jointed rock with two prefabricated joints are investigated through numerical simulations using a twodimensional finite element method Subsequently, simulations are performed to analyze the blasting of Ratedependent constitutive modelling blasting crack 2024年4月1日 Given the ongoing socioeconomic development, the depth of China’s underground construction continues to increase, including underground mine projects, hydropower projects, deep buried tunnel projects, etc [1], [2], [3], [4]These projects require construction in deeplyburied masses, and one of the most important geological characteristics Triaxial experimental study of mechanical behavior of non
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Strength and dilation of jointed granite specimens in servo
2014年7月1日 Strength and dilation of jointed granite specimens in servocontrolled triaxial tests Author links open overlay panel J Arzúa a, LR Alejano a, G Walton b Show more Add to Mendeley Proceedings of the 6th international symposium on ground support in mining and civil engineering construction, Cape Town; 2008, p 37–60 Google Scholar2017年5月1日 Alejano et al 21, 22 conducted extensive laboratory triaxial tests on both intact and jointed Blanco Mera granite samples and concluded that both the strength and deformation modulus of the Triaxial strength and deformability of intact and increasingly jointed DOI: 101016/01489062(77)905605 Corpus ID: ; Elastic and transport properties of an in situ jointed granite @article{Pratt1977ElasticAT, title={Elastic and transport properties of an in situ jointed granite}, author={Howard R Pratt and H S Swolfs and W F Brace and Alan D Black and John W Handin}, journal={International Journal of Rock Mechanics and Mining Elastic and transport properties of an in situ jointed granite2020年2月1日 Joint waviness is one of the important parameters of joint that need to be considered in civil and mining engineering design of structures built in or on jointed rock masses However, this parameter is often overlooked by designers In this study the mechanical properties of laboratory scale jointed granite with both planar and nonplanar joints of different joint Investigation of mechanical properties of jointed granite
Numerical study on dynamic mechanical properties of multijointed
2024年5月8日 The multijointed rock mass (MJRM) in mining, tunnel and underground engineering is prone to fracture and destabilization under the disturbance of blastinginduced dynamic wave Study on dynamic mechanical properties of the MJRM under impact loading contributes to improving the stability of rock mass during engineering activities A continuous 2017年5月1日 The Hoek–Brown failure criterion is an empirical relation that characterizes the stress conditions that lead to failure in intact rock and rock masses 1, 2, 3 Unlike the also popular MohrCoulomb failure criterion, it is nonlinear, and so better reflects rock strength as derived from laboratory triaxial tests However, the main breakthrough of the HoekBrown approach was the Triaxial strength and deformability of intact and increasingly jointed 2014年7月1日 We investigated the complete stress–strain response of artificially jointed granitic rock specimens with two joint sets A series of confined compressive tests on these jointed rock specimens were performed in a fully servocontrolled press Elastic, strength and postfailure parameters were calculated and analysed, with special attention paid to the dilation angleStrength and dilation of jointed granite specimens in servo 2023年8月17日 Heat transfer in jointed rock masses exhibits characteristics of discontinuous, heterogeneous, and anisotropic due to the effects of rock discontinuities In this work, thermal contact resistance (TCR) evolution of granite joints under normal stress was investigated A novel method was proposed for the measurement of TCR for rough rock joints A numerical Thermal Contact Resistance of Granite Joints Under Normal
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Strength and dilation of jointed granite specimens in
2014年7月1日 Alejano et al 21, 22 conducted extensive laboratory triaxial tests on both intact and jointed Blanco Mera granite samples and concluded that both the strength and deformation modulus of the