In China backfill mining has been selected as an effective approach to realize the green mining of underground coal resources where backfill materials are the major factor in the development of backfill mining In order to provide a better reference for further research and development of backfill mining the experience and research achievements are reviewed in this
For example as reported by Wang et al 2008 an extra large crown shaped ground surface collapse suddenly occurred in the Xingtai gypsum mine in China in November 2005 which resulted in a large number of casualties 37 died and 38 were injured Another good example was reported by Brady and Brown 2006 involving gold mining in South Africa
3State Key Laboratory of Water Resource Protection and Utilization in Coal Mining China Received December 29 2018 Revised June 17 2019 Accepted July 8 2019 Abstract Gangue filling in the
Antimony Sb is an important metalloid mined in more than 15 countries in the world with China accounting for over 80 % of the world s mined production and most of the reserve base He et al 2012 The Xikuangshan XKS Sb mine located in Hunan province China is the largest Sb mine in the world Peng et al 2003 The most serious environmental concern
Daliuta Huojitu Mine in Shaanxi was the largest underground mine in China producing approximately million metric tons per annum mmtpa of Run of Mine ROM in 2021 The Daliuta Huojitu Mine is owned by China Shenhua Energy Co Ltd and is due to operate until 2056 The second largest underground mine with an estimated mmtpa of ROM was the
K e y w o r d s I ndustrial solid waste gypsum Coal mine back lling Leaching of metal eleme nts Patte rns of migration China University of Mining and Technology Xuzhou 221116 China
As seen in Figure 4 c the SI−gypsum was less than 0 and linearly related to the sulfate content of groundwater Gypsum was always in a dissolved condition and released SO 4 2− The typical ranges of δ 34 S−SO 4 2− and δ 18 O−SO 4 2− for the dissolution of evaporites are between 12 and 35‰ and 6 and 20‰ respectively
Rescuers work at the collapsed mine site in Pingyi county East China s Shandong province Dec 26 2015 Eleven of the 29 people trapped on Friday in the collapsed gypsum mine have been rescued by
sustainability Article Research on Catastrophic Pillar Instability in Room and Pillar Gypsum Mining Yuejin Zhou 1 Meng Li 2 Xiaoding Xu 1 Xiaotong Li 1 Yongdong Ma 1 and Zhanguo Ma 1 1 State Key Laboratory for Geomechanics & Deep Underground Engineering China University of Mining & Technology Xuzhou 221116 Jiangsu China;
China is a prosperous market for gypsum manufacturers thanks to the extraordinary presence of end customers there China is predicted to produce the most CaSO4 followed by the United States Iran and Turkey based on statistics from global mining In 2020 China is projected to produce 25 million tonnes of natural gypsum overall
In China Saint Gobain is set to commence a capacity expansion project at its Yangzhou gypsum wallboard plant in Jiangsu Province in mid late 2023 for completion and commissioning in 2024 Turkish competition authorities approved Saint Gobain s merger of local subsidiary Saint Gobain Rigips with Dalsan Alçi
Eleven of the 29 people trapped on Friday in a collapsed gypsum mine in east China have been rescued by Saturday morning rescuers said Rescuers lifted a trapped miner whose leg was stuck under
There are over 14 000 TSFs in China some of which may represent latent hazards to downstream elements at risk Su et al 2023b Previous studies have highlighted that the rate of tailings production is increasing per active mine and globally mainly due to diminishing ore grades Rana et al 2022 This is likely leading to the
In order to realize the comprehensive utilization of the underground space formed by gypsum mining with the core goal of building an oil storage depot in the gypsum mine goaf the designed rock infiltration loading device was used to prepare gypsum rock samples immersed in oil for 0 15 and 30 days for rock mechanics experiments The influence of oil immersion on
In China backfill mining has been selected as an effective approach to realize the green mining of underground coal resources where backfill materials are the major factor in the development of
Six miners have confirmed dead and four others missing following a gypsum mine collapse in central China s Hunan The accident occurred at 6 30 PM on Saturday when a large part of the
Zigong salt mine in Sichuan Province which utilizes water injection mining method to mine salt from deep ground held the record of the highest intensity M L = of any mining induced seismic events in China In addition seismic activities due to rock caving in are most active at some gypsum mines in Zaozhuang city Shandong Province
The barite mine production in the recent four years was mainly provided by China India and Morocco as depicted in Fig 1 China contributes the largest amount of barite mine production and its barite reserves are mainly distributed in southern areas such as Hunan Zhejiang Guizhou and Guangxi province Fig 2
China is the world s largest gold producing country and the country s largest gold mine as of 2022 was the Shaxi Copper Mine located in Anhui province Shaxi Copper Mine produced 958 740
Backfill mining is the only way to realize no waste mining and create green mines but complicated backfill mining technology high mining costs and low production capacity greatly restrict its application in low quality iron mines To reduce the cost of iron ore backfill mining a large number of low cost green backfill cementing materials have been developed in
Mining ultimately alters the entire ecosystem which leads to substantial land use changes that generally affect the global economy According to studies Zhou et al 2015 mining has eroded about 40 000 km 2 of land in China and only the abandoned mine land records an annual increase of about 330 km 2
Objective To investigate the health of gypsum miners in Hubei province and analyze the health effects of occupational disease hazards exposure on gypsum In April 2017 occupational disease hazard factors were tested on the site of a gypsum mine and 500 workers were selected by random sampling to conduct questionnaires relevant data such
Abstract The Huayingshan coalfield is one of the most important coal districts in Southwest China Coal mining may have an impact on the hydrochemical characteristics and regional evolution of karst groundwater This study aims to analyze the hydrogeochemical characteristics identify the evolution processes and influencing factors that govern the
