Discussion on the water-preserved coal mining by dewatering-reflooding water curtain in open-pit coal mines

LI Ying; YANG Zhuo; WU Tong

doi:10.3969/j.issn.1001-1986.2021.06.019

Volume 49 Issue 6

Dec. 2021

Turn off MathJax

Article Contents

Abstract

References

COAL GEOLOGY & EXPLORATION > 2021 > 49(6): 160-166. > DOI: 10.3969/j.issn.1001-1986.2021.06.019

LI Ying, YANG Zhuo, WU Tong. Discussion on the water-preserved coal mining by dewatering-reflooding water curtain in open-pit coal mines[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(6): 160-166. DOI: 10.3969/j.issn.1001-1986.2021.06.019

Citation:

PDF (7275 KB)

Discussion on the water-preserved coal mining by dewatering-reflooding water curtain in open-pit coal mines

CCTEG Shenyang Engineering Company, Shenyang 110015, China

More Information

Received Date: May 12, 2021
Revised Date: August 19, 2021
Available Online: December 29, 2021
Published Date: December 24, 2021

Graphical Abstract

Abstract

Abstract

To suppress the attenuation of groundwater resources caused by drainage and control the influence range of coal mining on groundwater resources, the coal mining technology with water curtain was adopted. Taking an open-pit coal mine as the background, this paper established a sand trough recharge platform to carry out physical experiments, and used a numerical method to simulate the irrigation area, so as to analyze the formation and variation of the dewatering-reflooding water curtain. Physical experiments were carried out to observe the formation of a fixed head boundary by water injection curtain which prevented the expansion of funnel, the influence of different heights of water injection curtain head on water injection volume and the optimal water head which balanced the water injection and excretion were obtained. The numerical simulation results were similar to that of physical simulation. Under the condition that the aquifer falling funnel had been formed, the closer the water injection curtain is to discharge area, the greater the recharge amount to reach the predetermined head. And it took longer for water level to recover to a predetermined value under the condition of a given amount of water injection. In both physical and numerical simulation, changing the position of the water injection curtain or the height of the water head can make the pit drainage equal to the water injection of the curtain, which can minimized the external displacement of drainage water. The experiment and numerical simulation show that the water injection curtain is expected to be a practical model for water-preserved coal mining in open-pit coal mines in China.
- open-pit coal mine,
- mine water draining,
- water recharge,
- water curtain,
- constant water head,
- water-preserved coal mining

FullText(HTML)

References (28)

References

[1]	武强, 董东林, 傅耀军, 等. 煤矿开采诱发的水环境问题研究[J]. 中国矿业大学学报, 2002, 31(1): 19–22. WU Qiang, DONG Donglin, FU Yaojun, et al. Research on water pollution induced by coal mining[J]. Journal of China University of Mining & Technology, 2002, 31(1): 19–22.
[2]	董书宁, 王海, 黄选明, 等. 基于保障生态地下水位的露天煤矿主动保水技术研究[J]. 煤炭科学技术, 2021, 49(4): 49–57. https://www.cnki.com.cn/Article/CJFDTOTAL-MTKJ202104007.htm DONG Shuning, WANG Hai, HUANG Xuanming, et al. Research on active water conservation technology in open-pit coal mine based on ecological protection groundwater level[J]. Coal Science and Technology, 2021, 49(4): 49–57. https://www.cnki.com.cn/Article/CJFDTOTAL-MTKJ202104007.htm
[3]	赵凯, 李万涛, 张海永, 等. 地下防渗墙在研山铁矿第四系边坡防治水的应用[J]. 现代矿业, 2020, 36(5): 246–248. DOI: 10.3969/j.issn.1674-6082.2020.05.076 ZHAO Kai, LI Wantao, ZHANG Haiyong, et al. Application of underground cutoff wall in water control of Quaternary slope in Yanshan iron mine[J]. Modern Mining, 2020, 36(5): 246–248. DOI: 10.3969/j.issn.1674-6082.2020.05.076
[4]	张雁. 露天煤矿截渗减排新技术[J]. 露天采矿技术, 2017, 32(6): 45–47. https://www.cnki.com.cn/Article/CJFDTOTAL-LTCM201706013.htm ZHANG Yan. New technology of cutting off seepage channel and reducing water drainage in open-pit coal mine[J]. Opencast Mining Technology, 2017, 32(6): 45–47. https://www.cnki.com.cn/Article/CJFDTOTAL-LTCM201706013.htm
[5]	周伟, 时旭阳, 李明, 等. 露天矿坑隔水层重构及泥岩–地聚合物损伤渗透特性[J]. 煤炭学报, 2020, 45(10): 3556–3562. ZHOU Wei, SHI Xuyang, LI Ming, et al. Reconstructed water-blocking layer in open-pit mine and the damage-permeability characteristics of mudstone-geopolymer[J]. Journal of China Coal Society, 2020, 45(10): 3556–3562.
[6]	杨猛, 才庆祥, 尚涛, 等. 一种北方露天煤矿水资源存储及调配方法: CN109057799B[P]. 2019-06-28. YANG Meng, CAI Qingxiang, SHANG Tao, et al. Method for storing and dispensing water resources in northern open pit coal mines: CN109057799B[P]. 2019-06-28.
[7]	RUBIO R F, DAVID L F. Artificial recharge of groundwater in mining[Z]. Sydney: 2010.
[8]	BAQUERO J C, OSE DE LOS REYES M, CUSTODIO E, et al. Groundwater management in mining, the drainage and reinjection system in Cobre Las Cruces, Spain[J]. Modern Environmental Science and Engineering, 2016, 2(10): 631–646. DOI: 10.15341/mese(2333-2581)/10.02.2016/001
[9]	LOREDO J, MARQUES S A, GARCIA-ORDIALES E. Mine water reuse[C]//3^rd International Conference Towards Sustainable Development: Assessing the Footprint of Resource Utilization and Hazardous Waste Management. Greece, 2009.
[10]	MYERS T. Groundwater management and coal bed methane development in the Powder River Basin of Montana[J]. Journal of Hydrology, 2009, 368: 178–193. DOI: 10.1016/j.jhydrol.2009.02.001
[11]	董自才, 李鸿文, 王东, 等. 井点回灌系统截水帷幕的建立及其应用研究[J]. 云南农业大学学报, 2009, 24(1): 108–114. DOI: 10.3969/j.issn.1004-390X.2009.01.022 DONG Zicai, LI Hongwen, WANG Dong, et al. Construction and application of curtain for cutting off water in well point recharging system[J]. Journal of Yunnan Agricultural University, 2009, 24(1): 108–114. DOI: 10.3969/j.issn.1004-390X.2009.01.022
[12]	瞿成松. 上海陆家嘴地区回灌试验分析[J]. 地下空间与工程学报, 2014, 10(2): 52–55. https://www.cnki.com.cn/Article/CJFDTOTAL-BASE201402009.htm QU Chengsong. Analysis on recharge test at Lujiazui area in Shanghai[J]. Chinese Journal of Underground Space and Engineering, 2014, 10(2): 52–55. https://www.cnki.com.cn/Article/CJFDTOTAL-BASE201402009.htm
[13]	杨天亮, 严学新, 王寒梅, 等. 水位与沉降双控模式下浅层地下水压力回灌试验研究[J]. 上海地质, 2010, 31(4): 12–17. DOI: 10.3969/j.issn.2095-1329.2010.04.003 YANG Tianliang, YAN Xuexin, WANG Hanmei, et al. Experimental research of shallow aquifer pressure groundwater recharge based on dual control pattern of groundwater level and land subsidence[J]. Shanghai Geology, 2010, 31(4): 12–17. DOI: 10.3969/j.issn.2095-1329.2010.04.003
[14]	NISHIKAWA T, SIADE A J, REICHARD E G, et al. Stratigraphic controls on seawater intrusion and implications for groundwater management, Dominguez Gap area of Los Angeles, California, USA[J]. Hydrogeology Journal, 2009, 17(7): 1699–1725. DOI: 10.1007/s10040-009-0481-8
[15]	BARLOW P M, REICHARD E G. Saltwater intrusion in coastal regions of North America[J]. Hydrogeology Journal, 2010, 18: 247–260. DOI: 10.1007/s10040-009-0514-3
[16]	JOHNSON T. Battling seawater intrusion in the central & west coast basins[Z]. WRD Technical Bulletin, 2007.
[17]	GRABERT V K, NARASIMHAN T N. California's evolution toward integrated regional water management: A long-term view[J]. Hydrogeology Journal, 2006, 14: 407–423. DOI: 10.1007/s10040-005-0005-0
[18]	丁玲. 大连市周水子地区海水入侵问题研究[D]. 大连: 大连理工大学, 2004. DING Ling. The study of seawater intrusion in Zhoushuizi district of Dalian[D]. Dalian: Dalian University of Technology, 2004.
[19]	魏杨, 郑西来. 大沽河地下咸水抽咸注淡原位试验研究[J]. 中国海洋大学学报, 2017, 47(1): 26–31. WEI Yang, ZHENG Xilai. In-site restoration test of saline aquifers at Dagu river watershed[J]. Periodical of Ocean University of China, 2017, 47(1): 26–31.
[20]	贾惠颖, 焦庆秀. 防治咸水入侵淡水帷幕工程技术研究[J]. 山东水利专科学校学报, 1997, 9(3): 152–156. JIA Huiying, JIAO Qingxiu. Research on curtain engineering technology for preventing salt water intrusion into fresh water[J]. Journal of Shandong Hydraulic Engineering Institute, 1997, 9(3): 152–156.
[21]	梁盛军, 李世峰, 李耀华, 等. 矿井水回灌后的水位数值模拟及预测[J]. 中国矿业, 2010, 19(增刊1): 210–214. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKA2010S1054.htm LIANG Shengjun, LI Shifeng, LI Yaohua, et al. Water line modeling and predicting after recharging with mining water[J]. China Mining Magazine, 2010, 19(Sup. 1): 210–214. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKA2010S1054.htm
[22]	李世峰, 高文婷, 牛永强, 等. 矿井废水回灌工程试验研究[J]. 河北工程大学学报(自然科学版), 2012, 29(3): 66–70. https://www.cnki.com.cn/Article/CJFDTOTAL-HJXU201204018.htm LI Shifeng, GAO Wenting, NIU Yongqiang, et al. The experimental study on recharge engineering of mine wastewater[J]. Journal of Hebei University of Engineering(Natural Science Edition), 2012, 29(3): 66–70. https://www.cnki.com.cn/Article/CJFDTOTAL-HJXU201204018.htm
[23]	于兴社. 大水矿山地下水的综合治理[J]. 河北冶金, 2018(12): 48–51. YU Xingshe. Comprehensive management of groundwater in mine with rich water[J]. Hebei Metallurgy, 2018(12): 48–51.
[24]	冯利军, 项远法. 采矿疏水的回灌与地下水资源管理模型[J]. 西安矿业学院学报, 1998, 18(4): 296–300. https://www.cnki.com.cn/Article/CJFDTOTAL-XKXB199804002.htm FENG Lijun, XIANG Yuanfa. Injection of mining dewatering and groundwater resources management model[J]. Journal of Xi'an Mining Institute, 1998, 18(4): 296–300. https://www.cnki.com.cn/Article/CJFDTOTAL-XKXB199804002.htm
[25]	李文平, 李涛, 陈伟, 等. 采空区储水: 干旱区保水采煤新途径[J]. 工程地质学报, 2014, 22(5): 1003–1007. LI Wenping, LI Tao, CHEN Wei, et al. Goaf water storage: A new way for water preserved mining in arid areas[J]. Journal of Engineering Geology, 2014, 22(5): 1003–1007.
[26]	张革委, 蒋泽泉, 李涛. 陕西榆神府矿区采空区储水机理研究[J]. 陕西煤炭, 2012(2): 32–34. DOI: 10.3969/j.issn.1671-749X.2012.02.017 ZHANG Gewei, JIANG Zequan, LI Tao. Research on water storage mechanism of goaf in Yushenfu mining area, Shaanxi[J]. Shaanxi Coal, 2012(2): 32–34. DOI: 10.3969/j.issn.1671-749X.2012.02.017
[27]	李全生, 鞠金峰, 曹志国, 等. 基于导水裂隙带高度的地下水库适应性评价[J]. 煤炭学报, 2017, 42(8): 2116–2124. LI Quansheng, JU Jinfeng, CAO Zhiguo, et al. Suitability evaluation of underground reservoir technology based on the discriminant of the height of water conduction fracture zone[J]. Journal of China Coal Society, 2017, 42(8): 2116–2124.
[28]	顾大钊. 煤矿地下水库理论框架和技术体系[J]. 煤炭学报, 2015, 40(2): 239–246. GU Dazhao. Theory framework and technological system of coal mine underground reservoir[J]. Journal of China Coal Society, 2015, 40(2): 239–246.

Cited By

Get Citation

PDF

XML

Article Metrics

Article views (1300) PDF downloads (182)

Discussion on the water-preserved coal mining by dewatering-reflooding water curtain in open-pit coal mines

Abstract

References

Catalog

Article Metrics

Related

Discussion on the water-preserved coal mining by dewatering-reflooding water curtain in open-pit coal mines

Abstract

References

Catalog

Article Metrics

Related

Export File

Citation

Format

Content