Memory attitude monitoring method for hydraulic support based on grey theory
Gong-kuang zidonghua, 2017 Existing hydraulic support monitoring methods can only monitor single support without fusion analysis of monitoring data of united hydraulic supports and have low utilization ratio of monitoring data.
WANG Yafei +3 more
doaj +1 more source
Research on Dynamic Characteristics of Canopy and Column of Hydraulic Support under Impact Load
Energies, 2022 In the process of coal mining, the canopy and column play an important role in the safety support of hydraulic support. However, due to the complex and changeable coal seam conditions, the hydraulic support is significantly affected by the impact load ...
Q. Zeng +4 more
semanticscholar +1 more source
Investigation of Dynamic Behaviour of Four-Leg Hydraulic Support under Double-Impact Load
Strojniški vestnik - Journal of Mechanical Engineering, 2022 Hydraulic support is the key support equipment for underground coal mining. The frequent impact load during the mining process easily causes damage to the hinge joints and reduces the stability of the hydraulic support.
Yunyue Xie +5 more
semanticscholar +1 more source
Research on stabilized pressure hydraulic fluid supply technology adapted to hydraulic support actio
Gong-kuang zidonghua, 2018 In order to improve ability of hydraulic support following shearer in working face, coupling relationship among support action velocity, hydraulic system pressure and flow rate of hydraulic fluid supply was revealed by theory analysis of support ...
WANG Ranfeng +3 more
doaj +1 more source
The hydraulic bump: The surface signature of a plunging jet [PDF]
, 2013 When a falling jet of fluid strikes a horizontal fluid layer, a hydraulic jump arises downstream of the point of impact provided a critical flow rate is exceeded.
Bélanger J. +4 more
core +4 more sources
Vibration Response Analysis of Hydraulic Support Based on Real Shape Coal Gangue Particles
Energies, 2022 Top coal caving is an important way of thick coal seam mining. The current coal gangue identification technology is not mature, resulting in a low degree of automation of coal caving.
L. Wan +5 more
semanticscholar +1 more source
Applied Sciences, 2023 Solid backfilling is an environmentally friendly method of coal mining. Backfilling hydraulic supports are important devices in solid backfill mining.
Qiang Zhang +4 more
doaj +1 more source
Uncertainty in the determination of soil hydraulic parameters and its influence on the performance of two hydrological models of different complexity [PDF]
, 2009 Data of soil hydraulic properties forms often a limiting factor in unsaturated zone modelling, especially at the larger scales. Investigations for the hydraulic characterization of soils are time-consuming and costly, and the accuracy of the results ...
Baroni, G. +5 more
core +3 more sources
Cooperative control technology of shear and hydraulic support on fully-mechanized coal mining face
Gong-kuang zidonghua, 2020 Aiming at low cooperative control efficiency of shearer and hydraulic support on fully-mechanized coal mining face, a cooperative control technology of shearer and hydraulic support on fully-mechanized coal mining face was proposed based on technologies ...
LIU Qing +3 more
doaj +1 more source
The preparation and characterization of alumina membranes with ultra-fine pores : Part 3. The permeability for pure liquids [PDF]
, 1985 This paper reports on the permeability of alumina membranes with pore diameters of a few nanometers for pure liquids. It appears that the volume flux corrected for viscosity differences depends on the type of permeant.
Burggraaf, A.J., Leenaars, A.F.M.
core +3 more sources