Results 71 to 80 of about 2,878 (183)

Two-dimensional inverse problem of fire location in the closed goaf of coal mine based on optical fiber sensors.

PLoS ONE
Monitoring 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, Lu Chen, Kaiping Wang, Zeyi Liu, Yao Zhang, Lianzeng Shi, Ke Gao, Zemiao Yang   +7 more
doaj   +1 more source

Gas analysis of jian-gou mine goaf

IOP Conference Series: Earth and Environmental Science, 2018
Abstract Jiangou coal mine is a fully mechanized working face, with a height of 23 meters, serious air leakage in the goaf, easy spontaneous combustion of the coal seam, easy spontaneous combustion of the residual coal in the goaf. In order to prevent and control the spontaneous combustion fire in the goaf, we analyzed the thermal weight
Chengyu Li, Lili Zhang
openaire   +1 more source

Research on simulation technology of surface air leakage of shallow-buried goaf based on network calculatio

Gong-kuang zidonghua, 2017
In order to analyze influence of surface air leakage of shallow-buried coal seam on mine ventilation system and goaf flow field, a coupling model of shallow-buried goaf flow field and roadway ventilation network under surface air leakage was established.
WU Fengliang, HE Xiaochen, CHANG Xintan, MA Li, LI Chao   +4 more
doaj   +1 more source

XVI. On the ventilation of the coal-mine goaf [PDF]

The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science
n ...
openaire   +1 more source

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, Shen, Jing, Zuo, Dongfang, Guo, Xiapei   +3 more
openaire   +1 more source

A New Model for Calculating Voidage in Goaf Under Roof‐Cutting Pressure Relief Mining: Exploring the Influence of Volumetric Strain on Voidage From the Perspective of Finite Element

Energy Science & Engineering
Roof 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, Haidong Chen, Xiangjun Chen, Lin Wang, Shuailong Feng   +4 more
doaj   +1 more source

Research on fire early warning index system of coal mine goaf based on multi-parameter fusion

Scientific Reports
In 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
doaj   +1 more source

Research on optimization of grouting treatment for underground mining goaf collapse based on 3-dimensional simulation

Frontiers in Earth Science
The 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, Xiansen Xing, Changze Sun, Zujian Liu, Xiaoshuang Li, Menglong Dong   +5 more
doaj   +1 more source

Numerical simulation of well location deployment scheme for CO2 sequestration in old goaf

Meitan kexue jishu
As a potential CO2 storage geologic body, the old goaf has great storage potential. In order to clarify the distribution characteristics and storage capacity of CO2 injection in the old goaf under different monitoring well deployment schemes, based on ...
Yang DING, Yuanzhuo TANG, Shugang LI, Hongchao ZHAO, Bing ZHU, Yizheng ZHANG, Yan ZHANG   +6 more
doaj   +1 more source

Mechanisms of Groundwater Damage to Overlying Rock in Goaf

Processes
The discontinuation of pumping and drainage activities upon the cessation of mining operations leads to the gradual accumulation of groundwater. This inflow into mined-out areas affects the properties of the rock, disturbing the previously stable goaf and exacerbating instability.
Zhu, Nan, Liu, Fei, Sun, Dafa
openaire   +1 more source