Results 31 to 40 of about 6,997,530 (249)

Cooperative control technology of shear and hydraulic support on fully-mechanized coal mining face

open access: yesGong-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

Study on Fracture Behavior of Directly Covered Thick Hard Roof Based on Bearing Capacity of Supports

open access: yesApplied Sciences, 2023
Mine pressure at the working face is severe due to it being directly covered by a thick hard roof. To further investigate the technology of controlling the mine pressure of a thick hard roof, the upper working face of 13,121 in Gubei mine of Huainan ...
Jiawen Li   +4 more
doaj   +1 more source

Relationships between hydraulic traits and habitat preference for six Acer species occurring in the French Alps [PDF]

open access: yes, 2004
Xylem hydraulic properties and vulnerability to cavitation were studied in six Acer species which occur, in the French Alps, along a soil moisture gradient from the moist valleys to the drier mountain stands.
Tissier, Jérôme   +7 more
core   +1 more source

Possibility of applying mechanized coal mining in the mine 'Soko', with the comparative advantages of production results and impact [PDF]

open access: yesPodzemni Radovi, 2014
Mining method applied in the RMU 'Soko', is repeatedly technologically modified and reached the maximum limit in terms of productivity, level of job performance and safety at work.
Denić Miodrag   +4 more
doaj   +1 more source

Fieldwork Hydraulic Engineering near Varna, Bulgaria, 2016

open access: yes, 2017
Data collected by students for the MSC-course Fieldwork Hydraulic Engineering at TU Delft. The survey aims at the engineering and spatial design for the improvement of the St. Elias Marina and recreational area of the coastal resort of St.
Hydraulic Engineering Department of TU Delft
core   +1 more source

Cobble Sea Defence: Hydraulic Interface Stability of Sand underlying a Single Filter Layer [PDF]

open access: yes, 2010
A cobble sea defence appears to be an easy constructible protection, with relatively low total costs of ownership. Flume tests show that sand under such single layered constructions is stable. However, it is not exactly known how the hydraulic loading of
Zoon, A. (Arthur), Zoon, A. (author)
core   +1 more source

Improve the Xinanjiang model based on various hydrological model structures

open access: yesGuan'gai paishui xuebao
【Objective】 The Xinanjiang model is a hydrological model widely used for catchment modelling, but its accuracy depends on many factors. The objective of this paper is to present ways to improve the Xinanjiang model.
ZHANG Liping   +5 more
doaj   +1 more source

Research on automatic detection device of hydraulic support controller

open access: yesGong-kuang zidonghua, 2017
In view of problem of low detection efficiency existed in detection process of coal mine hydraulic support controller, an automatic detection device of hydraulic support controller was designed.
YANG Hanhong, MENG Feng
doaj   +1 more source

Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev   +2 more
wiley   +1 more source

Height measurement method of hydraulic support based on multi-sensor data fusio

open access: yesGong-kuang zidonghua, 2017
In view of problems that height measurement of hydraulic support on fully mechanized coal mining face was difficult and measurement result was not accurate, taking two-column shield hydraulic support as an example, expression of hydraulic support height ...
ZHANG Kun   +4 more
doaj   +1 more source

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