scholarly journals Mathematical modelling of operation of the hydraulic support system of the powered support sections with impulse-free continuous regulation of its resistance to the roof rock lowering

2021 ◽  
Vol 1064 (1) ◽  
pp. 012045
Author(s):  
V V Gabov ◽  
N V Babyr ◽  
D A Zadkov
Keyword(s):  
Mathematical Modelling ◽  
Support System ◽  
Roof Rock ◽  
Hydraulic Support ◽  
Powered Support

scholarly journals Designing a hydraulic support system for large monolithic mirror’s precise in-situ testing-polishing iteration

2019 ◽  
Vol 27 (3) ◽  
pp. 3746
Author(s):  
Haifei Hu ◽  
Xiao Luo ◽  
Zhenyu Liu ◽  
Xuejun Zhang ◽  
Donglin Xue ◽  
...  
Keyword(s):  
Support System ◽  
In Situ Testing ◽  
Hydraulic Support

scholarly journals Experimental validation of hydraulic support system for large structures

2021 ◽  
Author(s):  
Tomoya HATTORI ◽  
Noboru KAWAGUCHI ◽  
Yutaka EZAKI ◽  
Junji TAKAKI ◽  
Masao SAITO ◽  
...  
Keyword(s):  
Support System ◽  
Experimental Validation ◽  
Hydraulic Support ◽  
Large Structures

scholarly journals Study on the Mechanical Relationship among the Backfilling Mining Support, Roof Rock Beam, and Gangue Filling Body in Comprehensive Mechanized Filling Mining Process

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Zhimin Huang ◽  
Lei Zhang ◽  
Zhanguo Ma
Keyword(s):  
Mechanical Model ◽  
Roof Rock ◽  
Hydraulic Support ◽  
Simulation Experiments ◽  
Filling Height ◽  
Calculation Results ◽  
And Migration ◽  
Elastic Foundation Beam ◽  
Rock Beam ◽  
Similar Simulation

Based on the theory of elastic foundation beam, the mechanical model of the backfilling mining support-roof rock beam-gangue filling body under the condition of comprehensive mechanized filling mining is established. The foundation coefficient of each part is determined, and the subsidence of each part of roof rock beam is calculated. It is found that the initial filling height is the decisive factor to control the subsidence and migration stability of each part of the roof rock beam. Properly increasing the pushing force of backfilling-coal mining hydraulic support on the filling body can also effectively control the roof subsidence. The comprehensive mechanized filling mining process was studied by similar simulation experiments, it is found that the influence law of initial filling height on roof rock beam subsidence is the same as that of theoretical analysis, and the experimental measurement values and fitting function relationships are consistent with the theoretical calculation results.

Design of Electric-Hydraulic Control System for Hydraulic Powered Support in Fully Mechanized Mining Face

2013 ◽  
Vol 753-755 ◽  
pp. 2641-2644 ◽  
Author(s):  
Zhi Peng Xu ◽  
Kui Zhang ◽  
Ri Ji
Keyword(s):  
Control System ◽  
Control Unit ◽  
Hydraulic Control ◽  
Hydraulic Support ◽  
Hardware System ◽  
High Efficient ◽  
Powered Support ◽  
Constraint Relation ◽  
Mining Face ◽  
Hydraulic Control System

The constraint relation of three-key-equipment, including coal cutter, scraper conveyor and hydraulic support, applied in the safe, high-producing and high-efficient fully mechanized mining face, was introduced; the composition principle of electro-hydraulic control system, embedded in the hydraulic support, was discussed, and the design scheme of the composition and hardware system about the electro-hydraulic control unit was presented in this paper. And finally the scheme achieved the target that we can control and monitor the working condition in near real-time, on the ground, in the crossheading and in front of the mining face.

Design of a model powered support system in Kenadsa mine (Algeria)

2016 ◽  
Vol 52 (1) ◽  
pp. 78-86 ◽  
Author(s):  
A. Boutrid ◽  
M. Cherif Djouamaa ◽  
M. Chettibi ◽  
A. Bouhedja ◽  
K. Talhi
Keyword(s):  
Support System ◽  
Powered Support

scholarly journals Modeling of hydraulic support system for large structures

2021 ◽  
Author(s):  
Tomoya HATTORI ◽  
Noboru KAWAGUCHI ◽  
Yutaka EZAKI ◽  
Junji TAKAKI ◽  
Satoshi SATOH ◽  
...  
Keyword(s):  
Support System ◽  
Hydraulic Support ◽  
Large Structures

scholarly journals Dynamic model analysis of hydraulic support

2019 ◽  
Vol 11 (1) ◽  
pp. 168781401882014 ◽  
Author(s):  
Enguang Guan ◽  
Huihua Miao ◽  
Peibo Li ◽  
Jihao Liu ◽  
Yanzheng Zhao
Keyword(s):  
Support System ◽  
Natural Frequencies ◽  
Hydraulic Cylinder ◽  
Limited Range ◽  
Loop Modeling ◽  
Analysis Model ◽  
Hydraulic Support ◽  
Response Characteristics ◽  
Kinematic Diagram ◽  
The Relationship

In view of the shortcomings of traditional hydraulic support system, such as poor mobility and limited range of adjustment, a new configuration with double parallelogram structure is proposed. Combining the kinematic diagram of the mechanism of the new support system and the relevant parameters of the balance moment, using the kinematic vector closed-loop modeling method and D’Alembert’s principle, the relationship equation between the generalized coordinates of the hydraulic support and the geometric position parameters is obtained, and the analysis model with plural-freedom is established. Dynamic response characteristics and natural frequencies of column hydraulic cylinder and balance hydraulic cylinder are analyzed. The results demonstrate that the natural frequencies of the improved balance hydraulic cylinder and column hydraulic cylinder have been greatly improved, and the safety performance of the hydraulic support has been greatly increased.

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