LIU Shiliang，ZHANG Wenhui，WANG Ao，et al. Analysis of ecological water level recovery degree under coal mining subsidence disturbance in ecologically fragile area[J]. Coal Science and Technology，2023，51（12）：159−167
. DOI: 10.12438/cst.2023-0971| Citation: |
LIU Shiliang，ZHANG Wenhui，WANG Ao，et al. Analysis of ecological water level recovery degree under coal mining subsidence disturbance in ecologically fragile area[J]. Coal Science and Technology，2023，51（12）：159−167 . DOI: 10.12438/cst.2023-0971
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The variation degree of ecological water level in ecologically fragile areas is very important for ecological geological environment protection. Ecological water level inevitably undergoes variation under coal seam mining. The current research focuses on the decline of ecological water level under mining induced groundwater leakage, with little consideration given to the ecological water level restoration degree under non leakage of groundwater or disturbance of coal mining subsidence. For this reason, methods such as groundwater dynamics, groundwater level measurement, mathematical statistics, and comprehensive analysis are adopted, and an analytical method was proposed based on the idea of “distinguishing the leakage status of groundwater under coal seam mining → measuring the ecological water level changes in the coal mining face → establishing an ecological water level restoration degree well flow analysis model → predicting different ecological water level restoration times → comparing the analytical and measured values of different ecological water level restoration times” to study the degree of ecological water level restoration under the disturbance of coal mining subsidence in ecologically fragile areas. The results are as follows. ① Based on “key strata layer location + thin plate theory + soil arch effect + descending fissure”, a calculation method for the water-conducting fissure development height under overburden bedrock and soil structure is established, which overcomes the insufficient prediction accuracy caused by the existing empirical formula not considering the soil layer effect. Furthermore, combines the relationship between the thickness of the residual water-retaining layer and the aquifer seepage state, the aquifer seepage state is confirmed. ② Under the disturbance of coal mining subsidence, the measured ecological water level shows a change law of “rapid decline first, slow recovery, and stabilization”, but the ecological water level after coal mining can’t completely recover to the premining state. ③ An analytical model of the recovery degree of ecological water level under the disturbance of coal mining subsidence is established. The analytical values of the recovery time of three different recovery degrees of ecological water level are estimated, and the time errors of both are less than 10% compared with the measured values. ④ The reasons for the incomplete recovery of postmining ecological water level to pre-mining state are discussed from the perspectives of surface topography, atmospheric rainfall recharge, recharge and drainage of phreatic aquifers, and underground water drainage in mining areas.
| [1] |
池明波. 我国西北矿区水资源承载力评价与科学开采规模决策[D]. 徐州: 中国矿业大学,2019: 5–6.
CHI Mingbo. Evaluation of water resources carrying cpacity and decision-making of scientific coal mining scale in Northwest Mining Area of China:a case study in Yining Mining Area[D]. Xuzhou:China University of Mining and Technology,2019: 5–6.
|
| [2] |
范立民,向茂西,彭 捷,等. 西部生态脆弱矿区地下水对高强度采煤的响应[J]. 煤炭学报,2016,41(11):2672−2678. doi: 10.13225/j.cnki.jccs.2016.0243
FAN Liming,XIANG Maoxi,PENG Jie, et al. Groundwater response to intensive mining in ecologically fragile area[J]. Journal of China Coal Society,2016,41(11):2672−2678. doi: 10.13225/j.cnki.jccs.2016.0243
|
| [3] |
侯恩科,谢晓深,王双明,等. 中深埋厚煤层开采地下水位动态变化规律及形成机制[J]. 煤炭学报,2021,46(5):1404−1416.
HOU Enke,XIE Xiaoshen,WANG Shuangming, et al. Dynamic law and mechanism of groundwater induced by medium-deep buried and thick coal seam mining[J]. Journal of China Coal Society,2021,46(5):1404−1416.
|
| [4] |
王 皓,周振方,杨 建,等. 蒙陕接壤区典型煤层开采地下水系统扰动的定量表征[J]. 煤炭科学技术,2020,51(7):83−93. doi: 10.1007/s10230-020-00714-6
WANG Hao,ZHOU Zhenfang,YANG Jian, et al. Quantitative characterization of the disturbance of groundwater system in typical coal seam mining in contiguous area of Inner Mongolia and Shaanxi[J]. Coal Science and Technology,2020,51(7):83−93. doi: 10.1007/s10230-020-00714-6
|
| [5] |
YUE Weifeng,WANG Tiejun,TRENTON E. Franz, et al. Spatiotemporal patterns of water table fluctuations and evapotranspiration induced by riparian vegetation in a semiarid area[J]. Water Resources Research,2016,52(3):1948−1960. doi: 10.1002/2015WR017546
|
| [6] |
CHEN Weichi,LI Wenping,YANG Zhi, et al. Analysis of mining-induced variation of the water table and potential benefits for ecological vegetation:a case study of Jinjitan coal mine in Yushenfu mining area,China[J]. Hydrogeology Journal,2021,29(4):1−17.
|
| [7] |
李文平,王启庆,刘士亮,等. 生态脆弱区保水采煤矿井(区)等级类型[J]. 煤炭学报,2019,44(3):718−726. doi: 10.13225/j.cnki.jccs.2018.6031
LI Wenping,WANG Qiqing,LIU Shiliang, et al. Grade types of water-preserved coal mining coalmines in ecologically fragile area[J]. Journal of China Coal Society,2019,44(3):718−726. doi: 10.13225/j.cnki.jccs.2018.6031
|
| [8] |
XUE Sen,LIU Yu,LIU Shiliang, et al. Numerical simulation for groundwater distribution after mining in Zhuanlongwan mining area based on visual MODFLOW[J]. Environmental Earth Sciences,2018,77:400. doi: 10.1007/s12665-018-7575-3
|
| [9] |
刘中培,李 鑫,陈 莹,等. 基于MODFLOW与气候模式的矿区地下水流模拟[J]. 中国农村水利水电,2021,5:113−117,124. doi: 10.3969/j.issn.1007-2284.2021.05.020
LIU Zhongpei,LI Xin,CHEN Ying, et al. Groundwater flow simulation in mining area based on MODFLOW and climate model[J]. China Rural Water Resources and Hydropower,2021,5:113−117,124. doi: 10.3969/j.issn.1007-2284.2021.05.020
|
| [10] |
DONG Donglin,SUN Wenjie,XI Sha. Optimización de la Capacidad de Drenaje de una Mina Usando FEFLOW para la Veta de Carbón N° 14 de la Mina Linnancang en China[J]. Mine Water and the Environment,2012,31(4):353−360. doi: 10.1007/s10230-012-0205-5
|
| [11] |
HUANG Dan,LIU Zaibin,WANG Wenke. Evaluating the impaction of coal mining on ordovician karst water through statistical methods. Water,2018,10(10):1409.
|
| [12] |
FETHI Lachaal,AMMAR Mlayah,MOURAD Bédir, et al. Implementation of a 3–D groundwater flow model in a semi-arid region using MODFLOW and GIS tools:The Zéramdine–Béni Hassen Miocene aquifer system(east-central Tunisia)[J]. Computers and Geosciences,2012,48:187−198. doi: 10.1016/j.cageo.2012.05.007
|
| [13] |
卢帆远. 露天矿采场底板含水层的水位预测及治理优化方法研究[D]. 徐州:中国矿业大学,2022: 41–64.
LU Fanyuan. Research on water level prediction and control optimization method of open pit stope floor aquifer[D] Xuzhou:China University of Mining and Technology,2022: 41–64.
|
| [14] |
刘 瑜. 陕北侏罗系煤层开采导水裂缝带动态演化规律研究及应用[D]. 徐州:中国矿业大学,2018: 134–162.
LIU Yu. Dynamic Evolution and Application of Water Conducting Fractured Zone during Extraction of Jurassic Coal Seams in Northern Shaanxi [D]. Xuzhou:China University of Mining and Technology,2018: 134–162.
|
| [15] |
ZHANG Wenrui,LIU Tingxi,DUAN Limin, et al. Forecasting groundwater level of karst aquifer in a large mining area using partial mutual information and NARX hybrid model[J]. Environmental Research,2022,213:113747. doi: 10.1016/j.envres.2022.113747
|
| [16] |
QU Shen,WANG Guangcai,SHI Zheming,et al. Temporal changes of hydraulic properties of overburden aquifer induced by longwall mining in Ningtiaota coalfield,northwest China[J]. Journal of Hydrology,2020,582.
|
| [17] |
ZHAO Dekang,WU Qiang,CUI Fangpeng,et al. Using random forest for the risk assessment of coal- floor water inrush in Panjiayao COAL Mine,northern China. Hydrogeology Journal,2018,26(7):2327–2340.
|
| [18] |
KARAMAN Abdullah. Type-curve analysis of water-level changes induced by a longwall mine[J]. Journal of Environmental Geology,2001,40(7):897–901.
|
| [19] |
KARAMAN Abdullah,SEYIDALI S Akhiev,PHILIP J Carpenter. A new method of analysis of water-level response to a moving boundary of a longwall mine[J]. Water Resources Research,1999,35(4):1001–1010.
|
| [20] |
杨 倩. 采动影响下煤层顶板承压含水层水位变化及覆岩变形与破坏规律研究[D]. 阜新: 辽宁工程技术大学, 2013: 23–45.
YANG Qian. Study on water level change in confined aquifer and deformationand failure lawofoverlying strata caused by coal mining [D]. Fuxin: Liaoning Technical University, 2013: 23–45.
|
| [21] |
李 涛,李文平,孙亚军. 半干旱矿区近浅埋煤层开采潜水位恢复预测[J]. 中国矿业大学学报,2011,40(6):894–900.
LI Tao,LI Wenping,SUN Yajun,Prediction of groundwater table recovery affected by approximate shallowburied coal mining in semiarid region [J]. Journal of China University of Mining and Technology,2011,40(6):894–900.
|
| [22] |
赵德深,徐孟林,夏洪春. 基于熵权–层次分析的导水裂缝带高度预测研究[J]. 采矿与岩层控制工程学报,2013,18(110):8−10.
ZHAO Deshen,XU Menglin,XIA Hongchun. Prediction of water-induced fissure zone heoght based on entropy weight-AHP[J]. Coal Mining Technology,2013,18(110):8−10.
|
| [23] |
胡小娟,李文平,曹丁涛,等. 综采导水裂隙带多因素影响指标研究与高度预计[J]. 煤炭学报,2012,37(4):613−620. doi: 10.13225/j.cnki.jccs.2012.04.026
HU Xiaojuan,LI Wenping,CAO Dingtao, et al. Index of multiple factors and expected height of fully mechanized water flowing fractured zone[J]. Journal of China Coal Society,2012,37(4):613−620. doi: 10.13225/j.cnki.jccs.2012.04.026
|
| [24] |
国家矿山安全监察局. 建筑物、水体、铁路及主要井巷煤柱留设与压煤开采规范[M]. 北京:煤炭工业出版社,2017.
|
| [25] |
许家林,朱卫兵,王晓振. 基于关键层位置的导水裂隙带高度预计方法[J]. 煤炭学报,2012,37(5):762−769. doi: 10.13225/j.cnki.jccs.2012.05.002
XU Jialin,ZHU Weibing,WANG Xiaozhen. New method to predict the height of fractured water-conducting zone by location of key strata[J]. Journal of China Coal Society,2012,37(5):762−769. doi: 10.13225/j.cnki.jccs.2012.05.002
|
| [26] |
刘士亮. 陕北侏罗系煤田开采环境工程地质模式研究[D]. 徐州:中国矿业大学,2019: 26–90.
LIU Shiliang. Environmental engineering geological patterns relating to mining activities in jurassic coalfield of northern Shaanxi [D]. Xuzhou:China University of Mining and Technology,2019: 26–90.
|
| [27] |
黄庆享. 榆神府矿区覆岩隔水岩组的隔水性与保水开采研究[C]//中国煤炭学会开采专业委员会. 煤炭开采新理论与新技术——中国煤炭学会开采专业委员会2010年学术年会论文集. 中国矿业大学出版社,2010:11–18.
HUANG Qingxiang. Research on water-retaining and water-retaining mining of water-retaining rock formations in overlying rocks in Yushenfu Mining Area [C]// Mining Committee of China COAL Society. New Theory and Technology of Coal mining –- Proceedings of the,2010 Academic Annual Meeting of the Mining Committee of China COAL Society. China University of Mining and Technology Press,2010:11–18.
|
| [28] |
李 涛,王苏健,韩 磊,等. 生态脆弱矿区松散含水层下采煤保护土层合理厚度[J]. 煤炭学报,2017,42(1):98–105.
LI Tao,WANG Sujian,HAN Lei,Reasonable thickness of protected loess under loose aquifer in ecologicallfragile mining area [J]. Journal of China Coal Society,2017,42(1):98–105.
|
| [29] |
李 涛. 陕北煤炭大规模开采含隔水层结构变异及水资源动态研究[D]. 徐州:中国矿业大学,2012.117–142.
LI Tao. Study on aquifer-aquifuge structure variation and water resources dynamic evolution with large scale mining in northern Shaanxi Province [D]. Xuzhou:China University of Mining and Technology,2012.117–142.
|
| [30] |
LIU Shiliang,DAI Song,ZHANG Wenhui,et al. Impacts of underground coal mining on phreatic water level variation in arid and semiarid mining areas:a case study from the Yushenfu mining area,China[J]. Environmental Earth Sciences,2022.81(9):81.
|
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