单一工作面不同采深条件下边采边复时机研究
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摘要
传统的土地复垦一般为事后处理,该方法复垦周期长且土地恢复率低,无法及时保护土壤。随着边采边复理论的提出,边采边复技术在高潜水位地区复垦中展现出一定的优越性。对于井工煤矿边采边复而言,由于要在沉陷过程中采取措施,而不同采深条件下地面沉陷的过程及趋势对复垦时机的影响有所不同,因此对不同采深下边采边复时机的研究显得尤为必要。本文采用室内模拟方法,对单一工作面8个开采阶段在6种采深(500m、600m、700m、800m、900m、1 000m)下的动态沉陷过程进行模拟分析。基于模拟结果得出随着采深增加边采边复时机也相应推迟,并选出各个采深条件下的最佳土地复垦时机。同时发现,该矿区条件下,当采深达到921m以上,采用边采边复与塌陷稳定后治理效果基本相同。
The traditional land reclamation is an after-treatment method.This method has a long reclamation cycle and a low land recovery rate,which cannot protect the soil in time.With the introduction of the theory of concurrent mining and reclamation,the concurrent mining and reclamation technology shows certain superiority in the reclamation of high phreatic area.For the concurrent mining and reclamation of coal mines,due to the measures should be taken during the subsidence process,the processes and trends of ground subsidence under different mining conditions have different effects on the timing of reclamation.Therefore,it is especially necessary to study the timing of reclamation under different mining depths.In this paper,the indoor simulation method is used to simulate the dynamic subsidence process of 8 mining stages in6 mining depths(500 m,600 m,700 m,800 m,900 m,1 000 m).Based on the simulation results,it is concluded that the timing of the concurrent mining and reclamation is delayed with the increase of the depth of mining,and the optimal land reclamation timing under each mining depth is selected.At the same time,it is found that under the conditions of the mining area,when the mining depth reaches 921 mor more,it is basically the same effect as in collapse stability reclamation.
The traditional land reclamation is an after-treatment method.This method has a long reclamation cycle and a low land recovery rate,which cannot protect the soil in time.With the introduction of the theory of concurrent mining and reclamation,the concurrent mining and reclamation technology shows certain superiority in the reclamation of high phreatic area.For the concurrent mining and reclamation of coal mines,due to the measures should be taken during the subsidence process,the processes and trends of ground subsidence under different mining conditions have different effects on the timing of reclamation.Therefore,it is especially necessary to study the timing of reclamation under different mining depths.In this paper,the indoor simulation method is used to simulate the dynamic subsidence process of 8 mining stages in6 mining depths(500 m,600 m,700 m,800 m,900 m,1 000 m).Based on the simulation results,it is concluded that the timing of the concurrent mining and reclamation is delayed with the increase of the depth of mining,and the optimal land reclamation timing under each mining depth is selected.At the same time,it is found that under the conditions of the mining area,when the mining depth reaches 921 mor more,it is basically the same effect as in collapse stability reclamation.
引文
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[3]赵艳玲，胡振琪．未稳沉采煤沉陷地超前复垦时机的计算模型[J]．煤炭学报，2008,33(2):157-161.ZHAO Yanling,HU Zhenqi.Proper time model for pre-reclamation of unstable subsidence[J].Journal of China Coal Society,2008,33(2):157-161.
[4]董祥林，陈银翠，欧阳长敏．矿区塌陷地梯次动态复垦研究[J]．中国地质灾害与防治学报，2002,13(3):47-49.DONG Xianglin,CHEN Yincui,OUYANG Changmin.Study on dynamic reclamation of subsidence in mining area[J].The Chinese Journal of Geological Hazard and Control,2002,13(3):47-49.
[5]汪瑞侠．任楼煤矿利用煤矸石综合治理塌陷区的效益[J]．煤炭加工与综合利用，2009(2):43-44.WANG Ruixia.Benefit of comprehensive management of subsided area by using coal gangues in Renlou coal mine[J].Coal Processing&Comprehensive Utilization,2009(2):43-44.
[6]胡振琪，肖武．矿山土地复垦的新理念与新技术———边采边复[J]．煤炭科学技术，2013,41(9):178-181.HU Zhenqi,XIAO Wu.New idea and new technology of mine land reclamation:concurrent mining and reclamation[J].Coal Science and Technology,2013,41(9):178-181.
[7]肖武，邵芳，李立平，等．单一采区工作面不同开采顺序地表沉陷模拟与复垦对策分析[J]．中国矿业，2015,24(4):53-57.XIAO Wu,SHAO Fang,LI Liping,et al.Mining subsidence simulation and reclamation strategy for different mining sequence for panels in underground coal mines[J].China Mining Magazine,2015,24(4):53-57.
[8]李亚龙，赵艳玲，陈慧玲，等．基于格网法土壤剥离时空顺序确定[J]．中国矿业，2016,25(10):97-100.LI Yalong,ZHAO Yanling,CHEN Huiling,et al.Confirmation of topsoil stripping sequence of time and space based on grid method[J].China Mining Magazine,2016,25(10):97-100.
[9]张瑞娅．多煤层开采条件下边采边复技术研究[D]．北京：中国矿业大学（北京），2017.
[10]陈景平，胡振琪，刘东文，等．单一工作面不同煤厚开采下边采边复模拟研究[J]．煤炭工程，2018,50(8):145-149.CHEN Jingping,HU Zhenqi,LIU Dongwen,et al.Simulation of concurrent mining and reclamation for single coal face with different coal mining thickness[J].Coal Engineering,2018,50(8):145-149.
[11]袁冬竹，胡振琪，胡家梁，等．山东龙堌矿某单一工作面边采边复时机优选[J]．金属矿山，2018(1):187-192.YUAN Dongzhu,HU Zhenqi,HU Jialiang,et al.Determination of the concurrent mining and reclamation of single working face of Longgu mine in Shandong province[J].Metal Mine,2018(1):187-192.
[12]吴侃，葛家新，王铃丁，等．开采沉陷预计一体化方法[M]．徐州：中国矿业大学出版社，1998.
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