Results 71 to 80 of about 2,676 (167)
PLoS ONEMonitoring the temperature to determine the fire source locations is essential for controlling the spontaneous combustion in the goaf. Optical fiber sensors are employed to measure the temperature distribution in the goaf.
Yujiao Liu +7 more
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Flow field analysis of Jiangou mine goaf
IOP Conference Series: Earth and Environmental Science, 2018 Abstract With the increase of mining depth, many coal mines have the co-occurrence of natural fire and gas disasters. According to the actual situation of alkali ditch coal mine, this paper established a mathematical model and geometric model of mined-out area by using COMSOL software to carry on the numerical simulation.
Chengyu Li, Lili Zhang
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Numerical analysis of oxidation zone variation in goaf
Procedia Engineering, 2011 AbstractA good understanding of seepage flow distribution and the situation of coal spontaneous three zones in the goaf is of great value to integrated control of coal spontaneous combustion. Based on the theory analysis of voidage and permeability coefficient of porous media in goaf, this paper sets up a seepage flow mathematical model and analyzes ...
Tan, Bo +3 more
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Control Technology of Overlying Roadway in 7m Goaf
IOP Conference Series: Earth and Environmental Science, 2020 Abstract This paper takes Zhuxianzhuang Mine as the research background. In this research, the reasonable height of “three zones” of overlying strata at 7m mining height is determined by key strata theory, and the movement law of overlying strata is studied by FLAC3D numerical simulation.
Cong Liu +5 more
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Energy Science & EngineeringRoof cutting and pressure relief mining technology has been applied in coal mine enterprises because of its advantages of improving the resource utilization rate.
Mengke Liu +4 more
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Frontiers in Earth ScienceThe collapse of goaf is one of the most serious geological disasters in cities where underground mineral resources are mined. The ground subsidence caused by the goaf limits the social and economic development of the area, while also endangering the ...
Lin Teng +5 more
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Research on fire early warning index system of coal mine goaf based on multi-parameter fusion
Scientific ReportsIn order to improve the precision of goaf fire early warning outcomes, this paper obtains the temperature characteristic index of goaf fire early warning by using a coal spontaneous combustion thermogravimetric test and a coal spontaneous combustion ...
Beifang Wang, Yuanhao Lv, Chunbao Liu
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Research on supporting technology of roadway passing goaf
Meikuang Anquan, 2021 In order to study the deformation control of the surrounding rock under the broken surrounding rock in the mined-out area, a semicircular arch support technology of “U-shaped shed + grouting” was proposed. Based on the basic mechanical properties of the arch, a mechanical model of the bearing capacity of the semicircular arch roadway was constructed to
ZHOU Bo +4 more
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“Three zones” rule of spontaneous combustion in goaf under overburden separation grout filling
Meikuang AnquanOverburden separation grout filling (OSGF) technology compacts the fragmented rock mass in the goaf and changes the seepage characteristics and distribution of the “three zones” of spontaneous combustion in the goaf.
Haidong LIU +3 more
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Goaf filling with isolation preserving earth surface
Известия Томского политехнического университета: Инжиниринг георесурсов, 2017 The relevance of the work is caused by the need to combine the principles of economic efficiency of array state control while filling the cavities formed when mining and safety of the environment in the area of mineral resource extraction with the increase in volumes of extraction of mineral raw materials for the needs of the growing population.
Vladimir Ivanovich Golik +1 more
openaire +2 more sources