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Life cycle assessment of underground coal mining in China
2022年1月20日· This study performs an indepth analysis of the environmental impacts of underground coal mining in China Some technical measures are proposed based on2023年1月1日· Shimin Liu 1 Add to Mendeley https://doi/101016/B978012200011X Get rights and content Abstract The technology of coal mining has goneAdvances in coal mining technology and sustainable mining
Concurrent mining and reclamation for underground coal
2018年3月27日· Large scale underground mining of coal resources in China using longwall mining has resulted in ecological and environment problems, including surface2022年11月25日· The methods that are meeting Middle and Western China’s mining demands are discussed in detail The stateoftheart technologies that can realize highefficiency, centralized, and largescaleUnderground Disposal of Coal Gangue Backfill in China
Overview of Solid Backfilling Technology Based on
2019年4月9日· Many mines in China have used coalwaste separation methods such as the dense medium shallow groove method and the vibroassisted jigging method to implement backfilling mining after2023年3月27日· Backfill mining is the most effective approach for realizing the green mining of underground coal resources Longwall mining has become the most common underground coalmining method in ChinaReview of the Backfill Materials in Chinese
Underground space utilization of coalmines in China: A review of
2021年1月1日· There are three underground space utilization modes based on UWRs: storage and filtration of mine water, pumped hydroelectric storage plants system and2016年3月1日· Meanwhile, China is also a very important coal production country, whose production is the world’s largest Underground mining accounted for approximately 86% of total production in 2008 [4] There are more than 20 different underground coal mining methods in China, but longwall mining predominates [4]A comparative study of dust control practices in Chinese and Australian
Concurrent mining and reclamation for underground coal mining
2018年3月27日· Large scale underground mining of coal resources in China using longwall mining has resulted in ecological and environment problems, including surface subsidence that is considered serious due to competing interests of prime agricultural lands, food security, and regional economic development The subsided lands must be2022年1月20日· Coal is not only the main fossil fuel in China but also a pollution source To evaluate the impact of coal production on the environment, a life cycle assessment (LCA) was conducted on the mining process of a typical coal mine in China by using the SimaPro 900 software The Ecoinvent v3 database was used to provide the background data,Life cycle assessment of underground coal mining in China
Life cycle assessment of underground coal mining in China
2022年1月20日· Coal is not only the main fossil fuel in China but also a pollution source To evaluate the impact of coal production on the environment, a life cycle assessment (LCA) was conducted on the mining process of a typical coal mine in China by using the SimaPro 900 software The Ecoinvent v3 database was used to provide the background data,2022年1月24日· In order to avoid the destruction of underground aquifers in the ecoenvironment frangible area caused by the exploitation of coal resources, a new coal mining method with nearzero impact on aquifers (MNIA) was proposed according to the advantages of strip mining and backfill mining methods to effectively controlCoal mining method with nearzero impact on the ecological
A novel method for estimating methane emissions from underground coal
2017年12月1日· As shown in Fig 4, the desorbed methane resulting from the variation of stress and porosity during coal mining diffuses, seeps and finally discharges through the underground drainage system or mine ventilation with the rest remaining in old coal mining areas Download : Download highres image (755KB) Download : Download full2022年12月7日· China suffers the worst coal mine disasters in the world Lots of miners lose their lives or suffer occupational injury Fortunately, China is developing vigorously intelligent coal mining, which is the combination of traditional coal mining and the latest technology Mining expects to relieve or solve coal mine safety, health and intensiveReview on Improvements to the Safety Level of Coal Mines by
China's CH4 emissions from coal mining: A review of current
2020年7月10日· The average EFs of the underground mining and post underground mining are in the range of 687–1100 m 3 /t and 090–172 m 3 /t, respectively Most studies adopted the default values from IPCC to represent the EFs of the surface mining Only Zhu et al (2017) replaced it with the EFs of low CH 4 content coal mines2021年2月9日· Excessive exploitation of underground mine resources has caused serious land subsidence in China This paper focused on monitoring and modeling the single subsidence basin in coal mining area based on SAR interferometry (InSAR) The optimum InSAR processing strategy to monitor the mining subsidence was built to obtain the landMonitoring, Analyzing, and Modeling for Single Subsidence Basin in Coal
Minerals | Free FullText | Utilization Methods and Practice of
2022年8月24日· The total amount of underground space available in China’s coal mines is about 4 × 10 8 m 3, and the existing salt cavern space is 13 × 10 8 m 3 The available underground space has a good growth momentum and great potential for utilization with the elimination of backward mines and the continuous exploitation of rock salt mines [ 年3月4日· The underground reservoir in the coal mine provides a new way for the storage and utilization of mine water resources in mining areas in western China Combined with the characteristics of coal pillar (CP) in underground reservoirs, the cumulative damage law of the samples under cyclic loading and unloading (CLU) andThe progressive failure mechanism for coal pillars under the
Optimization of concurrent mining and reclamation plans for single coal
2012年7月19日· However, mining and utilization of coal may cause serious environmental impacts such as coal waste disposal, poisonous gas emissions, land subsidence, landscape change, etc Comparatively, land subsidence seems to be one of the most prominent problems in China, because 92 % of the coal output comes from underground mining,2021年3月27日· Accurate prediction of surface deformation due to the extraction of underground coal seams is a significant challenge in geotechnical engineering This task is further compounded by the growing trend for coal to be extracted under buildings by leaving coal pillars in place To rationalize the design of mining schemes to ensure effectiveStudy on Numerical Models in Predicting Surface Deformation Caused by
Evaluation of ecoenvironmental quality for the coalmining
2022年4月22日· Evaluation methodology Figure 2 exhibits the procedures and methods of constructing an EEQE evaluation system of the mining area We select the indicators that can reflect the ecological2023年4月3日· Underground coal mining has a strong disturbance on surrounding rock strata, causing inevitable water inflow into mined spaces, which seriously affects safety production Mine water disaster is regarded as one of the most critical problems in coal mining and, thus, has been a research hotspot in coal mining This review focuses onA review of water rock interaction in underground coal mining:
Analysis of the Characteristics of CH4 Emissions in China’s Coal
21 Method for Estimating CH 4 Emissions Coal mining includes underground mining and openpit mining, with the former generally having higher CH 4 emissions The United Nations Intergovernmental Panel on Climate Change (IPCC) provides three methods for calculating CH 4 emissions from coal mining []Method 1 is a default method, using the2022年12月15日· Coal mining method with nearzero impact on the ecological environment in a highintensity mining area of Northwest China Bull Eng Geol Environ, 81 The spatial distribution and expansion of subsided wetlands induced by underground coal mining in eastern China Environ Earth Sci, 80 (2021), pp 114, 101007/s12665Improving mine reclamation efficiency for farmland sustainable
Strata Movement Characteristics in Underground Coal
2023年4月21日· Underground coal gasification (UCG) is known as the “secondgeneration coal mining method” due to its simple process, low cost, and environmentally friendly features With the improvement of the gasification process, gasification efficiency is also increasing, UCG provides new ideas for mining stagnant resources and reducingMost coal seams are too deep underground for opencast mining and require underground mining, a method that currently accounts for about 60 percent of world coal produced more than 11 billion tons in 2007 An estimated 5 million people work in China's coalmining industry As many as 20,000 miners die in accidents eachCoal mining Wikipedia
Multidimensional safety risk assessment on coal mines under the
2023年2月15日· According to data from the National Mine Safety Supervision Bureau, there are 4,495 coal mines in China in 2020, 4,173 of which are underground mines, and the remaining 358 are openpit coal mines