Results 11 to 20 of about 335,851 (308)

Application of fiber optic sensors for vibration and ignition monitoring of a belt conveyor system [PDF]

open access: yes, 2019
The belt conveyor serves as the main coal transport equipment in a coal mine and its safe operation is the lifeline of safety in coal mine production.
Grattan, K. T. V.   +7 more
core   +1 more source

Investigation on Mining-Induced Floor Water Inrush from Column and Its Control Based on Microseismic Monitoring

open access: yesAdvances in Civil Engineering, 2023
Water inrush is the biggest threat for safe mining in the Ruifeng coalmine, located in North China. In the study mining area, the floor water inrush is mainly caused by mining activities and collapse column.
Run Liu   +3 more
doaj   +1 more source

Effects of Foaming and Drainage Behavior on Structure and Properties of Polyurethane/Water Glass (PU/WG) Grouting Materials for Coal Mines

open access: yesAdvances in Civil Engineering, 2021
During the grouting operation in the underground coal mine, abnormal curing behaviors such as foaming and drainage often lead to the loss of reinforcement effect of the polyurethane/water glass (PU/WG) materials on coal walls and even cause safety ...
Xiaofeng Yu   +4 more
doaj   +1 more source

Study of Methods and Development of Technological Scheme for Heat Removal from Rock Waste Dump [PDF]

open access: yes, 2017
The aim of this paper is to study the methods and develop technological scheme for thermal energy removal from coal mine rock waste dumps. The prospects of renewable energy sources development in Ukraine are analyzed.
Saik, Pavlo
core   +1 more source

Recovery of Coal Mine Methane and Its Utilization with a Newly Developed Gas Concentration System

open access: yesJournal of MMIJ, 2018
Kushiro Coal Mine is located in southeast of Kushiro-City, Hokkaido, Japan and the only underground as well as under seabed coal mine. Paleogene Harutori Coal Bearing Formation is mined over the long period.
Hiroyuki MATSUMOTO   +4 more
doaj   +1 more source

Study of quasi-distributed optical fiber methane sensors based on laser absorption spectrometry [PDF]

open access: yes, 2019
The coal industry plays an important role in the economic development of China. With the increase of coal mining year by year, coal mine accidents caused by gas explosion also occur frequently, which poses a serious threat to the life safety of ...
Chang, J.   +7 more
core   +1 more source

Load Capacity of steel arches with shotcrete coating [PDF]

open access: yesE3S Web of Conferences, 2019
The shotcrete technology (application of a concrete layer) is widely used in coal mines. The applied layer of shotcrete to the underground workings support, changes the load capacity of the entire supporting system (and its elements).
Ficek Paweł   +3 more
doaj   +1 more source

Effect of Loading Rates on Mechanical Characteristics and Rock Burst Tendency of Coal-Rock Combined Samples

open access: yesAdvances in Materials Science and Engineering, 2022
According to the universal law of thermodynamics, the failure of any substance is closely related to its energy change. Understanding the strain energy and rock burst tendency of rock or coal under different loading rates is critical in many geological ...
Jiang Hu, Jingang Li
doaj   +1 more source

Geologic considerations in underground coal mining system design [PDF]

open access: yes, 1981
Geologic characteristics of coal resources which may impact new extraction technologies are identified and described to aid system designers and planners in their task of designing advanced coal extraction systems for the central Appalachian region ...
Camilli, F. A.   +3 more
core   +2 more sources

Impact of mining activities in the Upper Silesian Coal Basin on surface water and possibilities of its reduction [PDF]

open access: yes, 2015
Due to the deposits of quality hard coal, the area of the Upper Silesian Coal Basin (USCB) has been one of the most industrialised regions in Europe for centuries.
Adamczyk, Zdzisław   +3 more
core   +2 more sources

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