Results 31 to 40 of about 277,436 (279)

Study on key technologies of automatic fully-mechanized top-coal caving face with large mining height

open access: yesGong-kuang zidonghua, 2014
The paper introduced key technologies of automatic fully-mechanized top-coal caving face with large mining height, including automatic control of hydraulic support, machinery-tracked automation, automation of coal caving, remote control, lighting and low
FAN Zhizhong
doaj   +1 more source

Adaptability Analysis of Full Height Mining at One Time of Deep Soft Thick Coal Seam

open access: yesFrontiers in Earth Science, 2022
With the improvement of technology and equipment, it is preferred to adopt full-height mining at one time when conditions permit. According to the specific geological conditions of no.
Qinghai Li   +5 more
doaj   +1 more source

Research on Adaptability of Full-mechanized Caving Mining with Large Mining-height

open access: yesProcedia Engineering, 2011
AbstractIn order to solve the safety problem from methane concentration in mining face with high mining intensity, full-mechanized top-coal caving mining with large mining-height was put forward. In spite of its advantages in controlling methane, its main problems were pointed out.
Quan-ming, LIU, De-bing, MAO
openaire   +1 more source

Generalization of trends in the influence of geomechanics factors on the choice of operation modes for the fastening system in the preparatory mine workings [PDF]

open access: yes, 2000
Purpose. Substantiation of the mechanism of loading the preparatory mine working support to optimize its deformation-strength characteristics based on the calculation of the stress-strain state of the “massif – support” system.
Chervatiuk, V   +4 more
core   +2 more sources

The system of tracking the position of the bucket excavator's wheel for prevention of risk situations [PDF]

open access: yes, 2018
For companies doing business in mining mineral deposits, ensuring safe work is one of the key tasks (Safety First!). One of the important trends in this area is prevention and endeavour to forestall risk situations. Risks need to be searched, technically
Kapica, Roman   +2 more
core   +1 more source

Prediction of subsidence due to underground mining by artificial neural networks [PDF]

open access: yes, 2003
Alternatively to empirical prediction methods, methods based on influential functions and on mechanical model, artificial neural networks (ANNs) can be used for the surface subsidence prediction.
Ambrožič, Tomaž, Turk, Goran
core   +1 more source

Innovative Development and Application of Fully Mechanized Top Coal Caving Mining Technology in Yankuang Group

open access: yesMeikuang Anquan, 2020
This paper systematically summarizes the development process of fully mechanized top coal caving technology and equipment in Yankuang Group in recent 30 years.
MENG Xiangjun, LI Mingzhong, YUE Ning, SUN Jishuang
doaj   +1 more source

Analysis of operation parameters of partial backfilling in the context of selective coal mining [PDF]

open access: yes, 2019
Purpose is to determine factors of effect of mechanical parameters and geometry of packs, constructed using the undercut rocks in the process of selective coal mining, on the state of geomechanical system within a mine working-stope junction during a ...
Dereviahina, N, Malanchuk, L, Sotskov, V
core   +1 more source

Laboratory Tests Of Waste Mixtures Consisting Recycled Tyre Rubber and Coal-Mining Wastes [PDF]

open access: yes, 2019
The paper presents the results of research on the application of recycled tyre rubber, in the form of rubber dust, in mixtures bound with a hydraulic binder, to improve the physical and mechanical parameters of unburnt coalmining slates.
Ciolczyk, Adrian, Walotek, Konrad
core   +1 more source

Cutting‐Caving Ratio Optimization of Fully Mechanized Caving Mining with Large Mining Height of Extremely Thick Coal Seam [PDF]

open access: yesAdvances in Civil Engineering, 2019
Serious rib spalling and low recovery rate problems caused by the poor top‐coal caving property (TCCP) were investigated in fully mechanized caving mining with large mining height (FMCMLMH) of extremely thick coal seam. For this aim, theoretical calculation, numerical simulation, and engineering application were applied to study the reasonable cutting ...
Kai Wang   +3 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy