Planning of Land Reclamation and Ecological Restoration in the Coal Mining Subsidence Areas of Wangwa Coal Mine

2009 ◽  
Author(s):  
Hao Binbin ◽  
Qi Junde
Keyword(s):  
Coal Mining ◽  
Ecological Restoration ◽  
Coal Mine ◽  
Land Reclamation ◽  
Mining Subsidence ◽  
Coal Mining Subsidence

scholarly journals A new approach to increase land reclamation rate in coal mining subsidence area: A case study of Guqiao Coal Mine, China

2021 ◽  
Author(s):  
Gensheng LI ◽  
Jianxuan Shang ◽  
Zhenqi Hu ◽  
Dongzhu Yuan ◽  
Pengyu Li ◽  
...  
Keyword(s):  
Coal Mining ◽  
Coal Mine ◽  
Land Reclamation ◽  
Water Area ◽  
Land Area ◽  
Reclaimed Land ◽  
Land Protection ◽  
Mining Areas ◽  
Concurrent Mining And Reclamation ◽  
Coal Mining Subsidence

Underground coal mining will inevitably cause land ponding in high groundwater table, which will affect the land sustainable development. However, the traditional reclamation (TR) is poor in land rate. Thus, finding a suitable reclamation approach is crucial to alleviate the conflicts between coal exploitation and land protection. In this paper, taking Guqiao Coal Mine of China was seriously affected by mining-induced ponding as an example. Firstly, dynamic distribution of surface subsidence and land damage from 2007 to 2017 was revealed base on concurrent mining and reclamation (CMR). Second, the land-water layout of five reclamation schemes (no reclamation, TR, CMR I, CMR II and CMR III) were simulated. Then, and the dynamic filling elevation model and filling thickness model were constructed. Finally, the sequence of earthwork allocation was optimized. The results revealed that: 1) reclaimed land area: CMR III > CMR II > CMR I > TR > no reclamation; 2) The digging depth is directly proportional to earthwork volume and land area, and inversely proportional to water area, but with increase of digging depth, the increase in the reclaimed land area relatively slowed down; 3) CMRs had reclaimed 426.31~637.82 ha and 259.62~471.13 ha more than the no reclamation and TR respectively. Compared with the no reclamation and TR, CMRs can increase the proportion of reclaimed land by 33.77~50.52% and 20.57~37.32% respectively. The research results provide a reference to increase the reclamation rate of mining areas in the high phreatic table.

Geological Environmental Impact Assessment of Mining Subsidence Area Based on Multilayer Fuzzy Synthetic Evaluation

2014 ◽  
Vol 1010-1012 ◽  
pp. 254-258 ◽  
Author(s):  
Jia Xing Xu ◽  
Hua Zhao ◽  
Gang Li
Keyword(s):  
Coal Mining ◽  
Land Reclamation ◽  
Mining Subsidence ◽  
Geological Environment ◽  
Fuzzy Synthetic Evaluation ◽  
Subsidence Area ◽  
Coal Mining Subsidence ◽  
Landscape Ecological ◽  
Different Levels ◽  
Synthetic Evaluation

Multilayer fuzzy synthetic evaluation is an effective method of the qualitative analysis into the quantitative analysis, and can reflect the different levels of objective things factors, avoiding the difficult to assign weights due to excessive factors. Geological environment of Jiawang coal mining subsidence area in Xuzhou was evaluated with an indices system based on multilayer fuzzy synthetic evaluation. Through evaluation, the serious damage region of geological mining of Jiawang mining subsidence area is 1918.966 hm2, and the more serious damage region is 2524.088 hm2, and the less affected area is 1366.971 hm2. The results showed that the geological environment of Jiawang mining subsidence damage is more serious. The farmland was destroyed seriously, and water due to land collapse was quite serious, which was difficult to land reclamation. It is believed that this work may provide scientific reference for land reclamation and landscape ecological restoration of coal mining subsidence area.

Research on the Ecological Restoration of Coal Mining Subsidence Area in Shanxi Province

2013 ◽  
Vol 827 ◽  
pp. 384-388
Author(s):  
Jing Yi Tian ◽  
Wei Yao
Keyword(s):  
Coal Mining ◽  
Ecological Restoration ◽  
Land Reclamation ◽  
Environmental Benefits ◽  
Shanxi Province ◽  
Subsidence Area ◽  
Advanced Experience ◽  
Complex Ecosystem ◽  
Countermeasures And Suggestions ◽  
Coal Mining Subsidence

Coal mining in Shanxi is characterized by the most severe gob and subsidence in China, so its ecological restoration is strongly typical, exemplary and stimulating for the whole country. At present, most of domestic researches focus on land reclamation rather than the ecological restoration of subsidence area for coal mining. In terms of subsidence area, ecological restoration is no longer to simply restore the subsidence area to the available settlement land, but to establish a natural complex ecosystem which is totally or partially different from the function of original land and can be harmoniously integrated with the surrounding economy, society and economics, thus generating high economic, social and environmental benefits. This paper analyzes the specific causes of environmental problems in mining collapse regions, and learns effective and advanced experience to propose techniques and methods for ecological restoration as well as the countermeasures and suggestions.

The Study on Land Reclamation Technology and Ecological Control for Coal Mining Subsidence Area

2012 ◽  
Vol 446-449 ◽  
pp. 2973-2977 ◽  
Author(s):  
Qian Yang ◽  
Wen Sheng Liu
Keyword(s):  
Coal Mining ◽  
Land Reclamation ◽  
Human Life ◽  
Mining Area ◽  
Ecological Crisis ◽  
Mining Subsidence ◽  
Ecological Control ◽  
Subsidence Area ◽  
Environment And Development ◽  
Coal Mining Subsidence

Both coal mine and land are important natural resources that human depend on for existence and development. Coal mining has contributed greatly to the development of economy and society in China. Meanwhile, subsidence induced by coal mining has seriously affected human life, ecological environment and development of regional economy in mining area. Thus, aiming at coal mining subsidence area, this paper puts forward two kinds of land reclamation techniques containing engineering reclamation technology and biological reclamation technology, which can scientifically guide land reclamation practice, coordinate relationship between human and land and relax ecological crisis.

scholarly journals Comparison of Plant and Microbial Communities between an Artificial Restoration and a Natural Restoration Topsoil in Coal Mining Subsidence Area

2018 ◽  
Author(s):  
Ying Liu ◽  
Shaogang Lei ◽  
Chuangang Gong ◽  
Zhengfu Bian
Keyword(s):  
Bacterial Community ◽  
Microbial Communities ◽  
Coal Mining ◽  
Ecological Restoration ◽  
Mining Area ◽  
Mining Subsidence ◽  
Subsidence Area ◽  
Natural Restoration ◽  
Coal Mining Subsidence ◽  
Artificial Restoration

Increased attention has been paid to the influence of coal mining subsidence on ecological environment. Restoration of ecosystem in damaged mining area is critical for restoring disturbed environment. The comparing of plant communities and microbial communities in the artificial restoration and natural restoration areas provides an effective method for evaluating the restoration effects. However, such studies are limited in coal mining subsidence restoration areas. Subsidence area in Shendong mining area, located in the semi-arid region of Western China, was restored from 2003 with 5 ecological restoration plant species. In July 2017, the comparison and analysis of plant and microbial communities were conducted at the artificial restoration areas (AR) and the natural remediation areas (NR). The results showed that the artificial ecological restoration in Shendong mining area has achieved some success, but it has not recovered to a similar ecosystem before the destruction. A higher plant species, coverage and bacterial community diversity were observed in AR. However, these features have lower similarity compared with those in NR sites. Potential soil factors, such as pH, moisture content, total carbon content, organic matter, nitrogen and bulk density, have a greater impact on soil bacterial community structure and diversity. In the ecological restoration of the mining area, attention should be paid to the restoration of soil properties in the mining area. This study can provide theoretical guidance for more scientific ecological restoration in the damaged mining area.

scholarly journals Research on urban and rural high-quality development based on ecological restoration of coal mining subsidence area

2021 ◽  
Vol 261 ◽  
pp. 04009
Author(s):  
Long Yang ◽  
Xiangchun Wang ◽  
Yangyang Chu ◽  
Fei Qin ◽  
Siyu Wang
Keyword(s):  
Coal Mining ◽  
Ecological Restoration ◽  
Rural Areas ◽  
Living Environment ◽  
Mining Subsidence ◽  
Quality Development ◽  
High Quality ◽  
Subsidence Area ◽  
Urban And Rural Areas ◽  
Coal Mining Subsidence

Ecological restoration of coal mining subsidence area is of great significance to improve the ecological and living environment, enrich the supply of ecological products, promote the green transformation of resource-based cities and the high-quality development of urban and rural areas. This paper combs the significance of ecological restoration in coal mining subsidence area to promote the high-quality development of urban and rural areas, systematically expounds the realization path of ecological restoration to promote urban-rural spatial integration, cultural integration, economic integration and social integration development by taking Pan’an Lake coal mining subsidence area as a case. Finally, the high-quality development evaluation index system of coal mining subsidence area based on ecological restoration is put forward, and the prospect of ecological restoration and high-quality development in coal mining subsidence area are discussed.

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