Results 11 to 20 of about 6,997,530 (249)

Inverse kinematics analysis of hydraulic support

open access: yesGong-kuang zidonghua, 2018
For problem that existing forward kinematics analysis methods of hydraulic support could not predict attitude of top beam accurately, an inverse kinematics analysis method of hydraulic support was put forward.
LU Xuliang, YAN Haifeng, ZHANG Li
doaj   +2 more sources

SUPPORT VECTOR MACHINE FOR HYDRAULIC SUPPORT RELIABILITY PREDICTION

open access: yesJixie qiangdu, 2017
In order to enhance the competitiveness of the domestic hydraulic support. It is imperative to carry out reliability engineering. The reliability evaluation of the hydraulic support in service can effectively provide reference for the development and ...
DING Fei   +3 more
doaj   +2 more sources

Design of an automated tension infiltrometer for unsaturated hydraulic conductivity measurement [PDF]

open access: yes, 2006
A tension infiltrometer for field use, where both water level changes measurement and tension settings could be automated, was built in-house. Differential pressure transducers were used to automate the water level measurement in the reservoir.
Špongrová, Kamila
core   +7 more sources

Research on state perception and analysis technology of hydraulic support in fully mechanized working face

open access: yesGong-kuang zidonghua, 2023
The intelligence of fully mechanized working face is a key link in the intelligence of coal mines. The perception and analysis of hydraulic support state is the premise and foundation of intelligent control of fully mechanized working face.
LI Jian, REN Huaiwei, GONG Shixin
doaj   +1 more source

Stone stability in breakwater toes based on local hydraulic conditions [PDF]

open access: yes, 2014
This study investigates the stability of rocks in breakwater toes. Previous studies have coupled the toe stability directly to the wave height, which is not physically accurate.
Peters, R.B.M. (Ruben)   +1 more
core   +1 more source

Research on principle of supporting status classification and sensing of hydraulic support

open access: yesGong-kuang zidonghua, 2020
Aiming at problem that single attitude measurement of hydraulic support can not fully reflect comprehensive state of hydraulic support, and can not realize accurate perception of supporting state of hydraulic support, taking two column shield hydraulic ...
ZHANG Desheng   +5 more
doaj   +1 more source

Study on the fast fluid supply and return scheme of hydraulic support column in fully mechanized working face

open access: yesGong-kuang zidonghua, 2021
The hydraulic support automatic follow-up control should have the performance of high support, fast support moving, large moving distance, etc. Among these performance, under the premise of ensuring stope safety, shortening the time of working face empty
ZHOU Rulin, QIAO Zishi, MENG Lingyu
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]

open access: yes, 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 ...
Facchi, A.   +18 more
core   +2 more sources

Memory attitude monitoring method for hydraulic support based on grey theory

open access: yesGong-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

Intelligent cooperative control of hydraulic support inspired by driveless car

open access: yesGong-kuang zidonghua, 2020
For problems such as low control accuracy, poor coordination and uneven pushing of hydraulic support in fully-mechanized coal mining face, an intelligent cooperative control method of hydraulic support is proposed based on driverless car technology ...
NIU Jianfeng
doaj   +1 more source

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