Article
Green & Sustainable Science & Technology
Tao Yuan, Ping Lu, Yijun Liu, Feng Ren, Haoran Zhang
Summary: This study investigated the distribution and influencing factors of carbon in the overlying water and sediment of coal mining subsidence wetlands in Xuzhou, China, during different seasons. The results showed significant spatial and temporal variations in the physicochemical properties of the wetlands, with water hypoxia and eutrophication being observed. The study also found interconnectedness and transformation of dissolved carbon between water and sediment.
Article
Environmental Studies
Zhenqi Hu, Gensheng Li, Jianan Xia, Zhanjie Feng, Jiazheng Han, Zanxu Chen, Wenjuan Wang, Guodong Li
Summary: Mining-induced subsidence leads to farmland damage and ponding formation. Traditional mining and reclamation (TMR) has low reclamation rate and long-term farmland abandonment. In this study, two critical width models were proposed to protect farmland and increase the reclamation rate. Concurrent mining and reclamation (CMR) and TMR were simulated, and the advantages of CMR were discussed. The results show that CMR can prolong farmland life, increase reclamation rate and farmland area, and has long-term social and ecological benefits.
Article
Environmental Sciences
Xing Chen, Liugen Zheng, Ruoyu Sun, Sikui Liu, Chang Li, Yongchun Chen, Yanfei Xu
Summary: Severe environmental issues are caused by long-term coal mining activities. This study investigated the content and sources of mercury in mining subsidence area sediments (MSAS). The results showed that the mercury content in MSAS was mainly affected by clay and organic matter, and primarily derived from gangue, soil erosion, coal, fly ash, and feed.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Biotechnology & Applied Microbiology
Meng Wang, Mengyao Sun, Yue Zhao, Yuying Shi, Shuo Sun, Shen Wang, Yiping Zhou, Lei Chen
Summary: The seasonal changes have an impact on soil microbial diversity in coal mining subsidence areas. Temperature, total phosphorus, available phosphorus, total organic carbon, and dry matter content are the key factors for the seasonal change of soil microbial community in the wetland of the coal mining subsidence area in Jining.
Article
Environmental Sciences
Tingting He, Wenqi Chen, Wu Xiao, Jiwang Guo, Hang Chen, Xinyu Deng
Summary: Many coal mining areas overlap with agricultural land, causing surface subsidence and waterlogging that harm agricultural land. This study used the Google Earth Engine platform and OPTRAM model to estimate soil moisture distribution around mining subsidence waterbody samples in eastern China. Based on the spatial variation of soil moisture, the impact boundary of coal mining was determined. The study found a good correlation between estimated and measured values of soil moisture, and identified the impact distances and human activities influencing subsidence waterbody buffer basins.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Environmental Sciences
Z. H. Wang, S. X. Wu, J. L. Li, W. C. Sun, Z. F. Wang, P. J. Liu
Summary: This study focuses on the subsidence characteristics and reclamation methods of the second coal mine in Zhaogu mining area caused by underground mining. The boundaries of submerged and damaged zones are identified using UAV monitoring. The subsidence basin shape is influenced by overburden composition, mining method, and mining sequence. The post-mining land is reclaimed for various purposes, including water reservoir, aquaculture, fishing, boating, afforested areas, board and lodging areas, and picking gardens.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Erhu Bai, Wenbing Guo, Yi Tan, Dongtao Wu, Yaozhan Zhang, Peng Wen, Zhibao Ma
Summary: This study focuses on the issues of groundwater loss and eco-environment damage caused by coal mining, and conducts on-site research in Zhaojiazhai coalmine, proposing solutions including well drainage technology, surface crack analysis, and land reclamation measures. Furthermore, the study proves that the utilization of waste heat can provide clean energy for coal mine production, saving energy costs and improving the ecological environment in the mining area.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Studies
Gensheng Li, Zhenqi Hu, Pengyu Li, Dongzhu Yuan, Wenjuan Wang, Kun Yang
Summary: This study analyzed the impact of coal mining on cropland and proposed key issues in optimizing coal mining and farmland protection. By examining the influences of various factors on surface ponding and cropland damage, recommendations to reduce mining width were suggested to achieve sustainable development.
Article
Chemistry, Multidisciplinary
Xiaozhen Wang, Jianlin Xie, Jialin Xu, Weibing Zhu, Limin Wang
Summary: The study explored the influence of mining height and width on overburden subsidence in longwall pier-column backfilling. Numerical simulations and physical similarity models were used to analyze the control effect of overburden subsidence, providing strong theoretical support for evaluating the control effect in this backfilling method.
APPLIED SCIENCES-BASEL
(2021)
Article
Multidisciplinary Sciences
A. K. M. Badrul Alam, Yoshiaki Fujii, Shaolin Jahan Eidee, Sophea Boeut, Afikah Binti Rahim
Summary: Accurately predicting mining-induced subsidence is essential for sustainable mine management. The subsidence caused by the mining of Northern Upper Panels (NUP) and Southern Lower Panels (SLP) at the Barapukuria longwall coal mine was simulated using the Displacement Discontinuity Method. The effects of various factors, such as the ground surface, mining panels, faults, and the dyke, were considered in the numerical model. The predicted subsidence was compared with the observed subsidence, and the best match in terms of Young's modulus was determined. Future subsidence was also predicted, and vulnerable areas were identified based on tilt angle and extensile strain.
SCIENTIFIC REPORTS
(2022)
Article
Geosciences, Multidisciplinary
Dongdong Yang, Haijun Qiu, Shuyue Ma, Zijing Liu, Chi Du, Yaru Zhu, Mingming Cao
Summary: This study investigated the impact of slow surface subsidence caused by underground coal mining on landslide occurrences by using multitemporal satellite images, UAV surveys, and InSAR technique. The results show that subsidence significantly increases the likelihood of landslides, with the frequency ratio of landslides and fissures increasing with cumulative subsidence.
Article
Multidisciplinary Sciences
Xingsheng Zhang, Shaobin Yan, Haicheng Tan, Jinyu Dong
Summary: Coal mining can cause long-term ground subsidence, leading to environmental damage and other disasters. This study developed a prediction method for dynamic ground subsidence using a time function model and applied it to a specific mine, with good agreement between the simulated results and monitoring data. The dynamic development of the ground subsidence basin can assess underground losses and provide early warning of hazards.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Gensheng Li, Zhenqi Hu, Dongzhu Yuan, Pengyu Li, Zhanjie Feng, Yibo He, Wenjuan Wang
Summary: This article investigates the impacts of coal mining-induced subsidence and land damage on land reclamation and proposes a method of concurrent mining and reclamation to optimize land reclamation strategies. The results show that the concurrent mining and reclamation scheme can increase the proportion of reclaimed land compared to traditional reclamation methods and no reclamation.
LAND DEGRADATION & DEVELOPMENT
(2022)
Article
Environmental Sciences
Xiaoqing Chen, Liangmin Gao, Youbiao Hu, Leilei Luan, Rongrong Tong, Jinxin Zhang, Hui Wang, Xiaofang Zhou
Summary: This study investigated the concentration, distribution, and sources of HCHs and DDTs in the Yangzhuang coal mining subsidence area in Huainan, China. The results showed that the concentrations of HCHs and DDTs increased with depth, decreased in the direction of water flow, and were mainly influenced by human activities such as pesticide use. The overall ecological risk of HCHs and DDTs in the study area was found to be elevated, indicating a potential impact on the ecological health of water in coal mining subsidence areas.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Multidisciplinary Sciences
Jian Cao, Qingxiang Huang, Lingfei Guo
Summary: The study reveals the subsidence characteristics and overburden structure distribution areas of shallow coal seam mining in the Jurassic Coalfield, Western China, suggesting that the subsidence of overburden strata and soil layer depends on different factors and can be divided based on the subsidence situation of key strata and bedrock.
SCIENTIFIC REPORTS
(2021)