刘洪林;曹文祥;单成方;钱京;吴超;荀浩;周文良;

• 1:新疆大学地质与矿业工程学院
• 2:新疆大学矿产资源生态环境保护性开采自治区高校重点实验室
• 3:库车县榆树岭煤矿有限责任公司

摘要(Abstract)：

煤层开采过程中,采动覆岩的破断特征是决定工作面矿压显现规律的关键因素.为掌握大倾角煤层覆岩在开采扰动下的破断和垮落演化机制,以库拜煤田铁列克矿区典型生产地质条件为基础,采用相似材料模拟实验的方法,分析仰采和俯采两种开挖方式条件下工作面覆岩的破断与垮落特征.结果表明:(1)仰采和俯采的基本顶初次破断方式不同,但断裂步距基本一致,分别为32.4 m、32.8 m.(2)仰采和俯采的平均周期破断步距分别为13.8 m、11.7 m,仰采的周期破断步距明显大于俯采.(3)由于受地层倾角影响,大倾角煤层基本顶岩层破断垮落后对采空区的充填普遍具有非均匀充实特点,采空区垮落岩石对悬露基本顶的非对称边界约束和不同开采方式的扰动差异共同导致了采动覆岩的差异化破断特征.

关键词(KeyWords)： 大倾角;相似模拟;覆岩结构;非对称约束;破断特征

Abstract:

Keywords:

基金项目(Foundation): 新疆维吾尔自治区自然科学基金项目（2019D01C023）;; 国家自然科学基金（51964043;U1903216）;; 新疆维吾尔自治区高校科研计划项目（XJEDU2017M008）;; 国家级大学生创新训练计划项目（201810755020）

作者(Authors): 刘洪林;曹文祥;单成方;钱京;吴超;荀浩;周文良;

DOI: 10.13568/j.cnki.651094.651316.2019.10.24.0001

参考文献(References)：

• [1]钱鸣高,许家林,王家臣.再论煤炭的科学开采[J].煤炭学报,2018,43(1):1-13.QIAN M G,XU J L,WANG J C.Further on the sustainable mining of coal[J].Journal of China Coal Society,2018,43(1):1-13.(in Chinese)
• [2]张东升,刘洪林,范钢伟,等.新疆大型煤炭基地科学采矿的内涵与展望[J].采矿与安全工程学报,2015,32(1):1-6.ZHANG D S,LIU H L,FAN G W,et al.Connotation and prospection on scientific mining of large Xinjiang coal base[J].Journal of Mining&Safety Engineering,2015(1):1-6.(in Chinese)
• [3]张东升,刘洪林,范钢伟.新疆伊犁矿区保水开采内涵及其应用研究展望[J].新疆大学学报(自然科学版),2013,30(1):13-18.ZHANG D S,LIU H L,FAN G W.Prospects for the connotation and application research of aquifer-protection mining on Yili mining area of Xinjiang[J].Journal of Xinjiang University(Natural Science Edition),2013,30(1):13-18.(in Chinese)
• [4]陈辉,史秀志,管伟明.层状岩体爆破装药结构试验研究[J].新疆大学学报(自然科学版),2019,36(3):361-368.CHEN H,SHI X Z,GUAN W M.Experimental study on blasting charge structure of layered rock mass[J].Journal of Xinjiang University(Natural Science Edition),2019,36(3):361-368.(in Chinese)
• [5]伍永平,员东风,张淼丰.大倾角煤层综采基本问题研究[J].煤炭学报,2000(5):465-468.WU Y P,YUN D F,ZHANG M F.Study on the elementary problems of full-mechanized coal mining in greater pitching seam[J].Journal of China Coal Society,2000,25(5):465-468.(in Chinese)
• [6]屠洪盛,屠世浩,白庆升,等.急倾斜煤层工作面区段煤柱失稳机理及合理尺寸[J].中国矿业大学学报,2013,42(1):6-11+30.TU H S,TU S H,BAI Q S,et al.Instability of a coal pillar section a steep mining face:Pillar size located at selection[J].Journal of China University of Mining&Technology,2013,42(1):6-11+30.(in Chinese)
• [7]伍永平,皇甫靖宇,解盘石,等.基于大范围岩层控制技术的大倾角煤层区段煤柱失稳机理[J].煤炭学报,2018,43(11):3062-3071.WU Y P,HUANGFU J Y,XIE P S,et al.Mechanism of instability of section coal pillar in steeply dipping seam based on large-scale strata control technology[J].Journal of China Coal Society,2018,43(11):3062-3071.(in Chinese)
• [8]王红伟.大倾角煤层长壁开采围岩应力演化及结构稳定性研究[D].西安:西安科技大学,2014.WANG H W.Research on evolution of stress and structural stability of surrounding rock in the longwall mining of steeply dipping seam[D].Xi’an:Xi’an University of Science and Technology,2014.(in Chinese)
• [9]解盘石,伍永平,罗生虎,等.大倾角大采高采场倾向梯阶结构演化及稳定性分析[J].采矿与安全工程学报,2018,35(5):953-959.XIE P S,WU Y P,LUO S H,et al.Structural evolution of ladder roof and its stability analyses for a fully-mechanized working face with a large mining height in steeply inclined coal seam[J].Journal of Mining&Safety Engineering,2018,35(5):953-959.(in Chinese)
• [10]张益东,程敬义,王晓溪,等.大倾角仰(俯)采采场顶板破断的薄板模型分析[J].采矿与安全工程学报,2010,27(4):487-493.ZHANG Y D,CHENG J Y,WANG X X,et al.Thin plate model analysis on roof break of up-dip or down-dip mining stope[J].Journal of Mining and Safety Engineering,2010,27(4):487-493.(in Chinese)
• [11]肖家平,杨科,刘帅,等.大倾角煤层开采覆岩破断机制研究[J].中国安全生产科学技术,2019,15(3):75-80.XIAO J P,YANG K,LIU S,et al.Study on breaking mechanism of overlying strata in deeply inclined coal seam[J].Journal of Safety Science and Technology,2019,15(3):75-80.(in Chinese)
• [12]李晓红,卢义玉,康勇,等.岩石力学实验模拟技术[M].北京:科学出版社,2007.LI X H,LU Y Y,KANG Y,et al.Experimental simulation technology of rock mechanics[M].Beijing:Science Press,2007.(in Chinese)
• [13]许俊凯,林喜珊,闫彬彬,等.露天煤矿区黄土高切坡稳定性分析[J].三峡生态环境监测,2019(2):45-52.XU J K,LIN X S,YAN B B,et al.Stability analysis of loess high cutting slope in opencast coalmine area[J].Ecology and Environmental Monitoring of Three Gorges,2019,4(2):45-52.(in Chinese)