|本期目录/Table of Contents|

[1]谷文伟,高召宁,李颜.极近距离煤层综放开采工作面覆岩“两带”发育规律研究*[J].中国安全生产科学技术,2022,18(5):135-142.[doi:10.11731/j.issn.1673-193x.2022.05.021]
　GU Wenwei,GAO Zhaoning,LI Yan.Study on development regularity of “two zones” in overlying strata with fully mechanized caving mining in extremely contiguous coal seams[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2022,18(5):135-142.[doi:10.11731/j.issn.1673-193x.2022.05.021]
点击复制

极近距离煤层综放开采工作面覆岩“两带”发育规律研究*
分享到：

《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
18
期数:
2022年5期
页码:
135-142
栏目:
职业安全卫生管理与技术
出版日期:
2022-05-31

文章信息/Info

Title:
Study on development regularity of “two zones” in overlying strata with fully mechanized caving mining in extremely contiguous coal seams
文章编号:
1673-193X(2022)-05-0135-08
作者:
谷文伟; 高召宁; 李颜
(1.安徽理工大学 煤矿安全高效开采省部共建教育部重点实验室，安徽 淮南 232001；
2.安徽理工大学 深部煤矿采动响应与灾害防控安徽省重点实验室，安徽 淮南 232001)
Author(s):
GU Wenwei;  GAO Zhaoning;  LI Yan
(1.Province and MOE Joint Key Lab of Mine Safety and High Efficient Mining,Anhui University of Science and Technology,Huainan Anhui 232001,China;
2.Anhui Provincial Key Lab of Deep Coal Mines Excavation Response and Disaster Prevention and Control,Anh
关键词:
极近煤层; 上覆岩层; “两带”高度; 分布式光纤
Keywords:
extremely contiguous coal seams;  overlying strata;  height of “two zones”;  distributed optical fiber
分类号:
X936;TD327
DOI:
10.11731/j.issn.1673-193x.2022.05.021
文献标志码:
A
摘要:
为深入研究极近距离煤层综放开采工作面覆岩“两带”的动态发育规律，采用理论推导、数值模拟和现场实测相结合的方法，分析袁店一矿824工作面覆岩“两带”的裂隙演化特征。结果表明：从岩层层向拉伸率角度，研究上覆岩层垮落带和导水裂隙带的垮落程度，考虑角度影响推导出岩层弯曲下沉边缘段变形前后的长度计算公式，根据覆岩的碎胀特征计算各岩层的最大下沉量，预测垮落带和裂隙带的范围分别为30.2~41.2 m和70.7~78.2 m；采用3DEC数值模拟分析该矿824工作面开挖后上覆岩层垮落的基本形态和裂隙分布规律，结合其应力、位移云图和监测线位移曲线的分布特征，得出垮落带和裂隙带的高度分别为32.50 m和77.25 m；采用分布式光纤应变监测系统，监测工作面前方80 m处上部顶板的受力情况，得出受采动影响的光纤应变呈起伏变化，且应变分布与地层岩性存在对应关系，得出垮落带高度约30.4 m，裂隙带高度约74.8 m，验证采用层向拉伸率和覆岩碎胀性2个方面来预测工作面覆岩“两带”高度的合理性，可为类似方面的研究与施工提供相应的技术依据。
Abstract:
In order to further study the dynamic development regularity of “two zones” in the overlying strata with the fully mechanized caving mining in the extremely contiguous coal seams,the fractures evolution characteristics of “two zones” in the overlying strata in No.824 working face of Yuandian No.1 Mine were analyzed by combining the theoretical derivation,numerical simulation and field measurement.The results showed that the stratigraphic stretch rate of overlying strata could be used to study the collapse degree of the collapsed zone and the water-conducting fractured zone in the overlying strata,and the calculation formula for the length before and after the deformation of the bending and sinking edge section of the strata was derived considering the influence of angle,then the maximum subsidence value of each strata was calculated according to the swelling characteristics of overlying strata,and the predicted ranges of collapsed zone and fractured zone were 30.2~41.2 m and 70.7~78.2 m,respectively.The 3DEC numerical simulation was used to analyze the basic morphology and fracture distribution regularity of overlying strata collapse after the excavation of No.824 working face,and combined with the distribution characteristics of the stress,displacement cloud map and monitoring line displacement curve,it was obtained that the heights of collapsed zone and fractured zone were 32.5 m and 77.25 m,respectively.The strain detection system with distributed optical fiber was used to monitor the force of upper roof at 80 m in front of working face,and it was concluded that the fiber strain affected by mining presented the fluctuated change.There was a corresponding relationship between the strain distribution and formation lithology,and the height of collapsed zone was about 30.4 m,and the height of fractured zone was about 74.8 m.The results verified the rationality of predicting the heights of “two zones” by using the stratigraphic stretch rate and the breaking expansion property of overlying strata,and provide the corresponding technical basis for the research and construction in similar directions.

参考文献/References:

［1］郭文兵,白二虎,赵高博.高强度开采覆岩地表破坏及防控技术现状与进展［J］.煤炭学报,2020,45(2):509-523. GUO Wenbing,BAI Erhu,ZHAO Gaobo.The status and progress of overlying rock surface damage and prevention and control technology in high-strength mining［J］.Journal of China Coal Society,2020,45(2):509-523.
［2］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. XU Jialin,ZHU Weibing,WANG Xiaozhen.Prediction method of water-conducting fracture zone height based on key layer position［J］.Journal of China Coal Society,2012,37(5):762-769.
［3］高延法,黄万朋,刘国磊，等.覆岩导水裂缝与岩层拉伸变形量的关系研究［J］.采矿与安全工程学报,2012,29(3):301-306. GAO Yanfa,HUANG Wanpeng,LIU Guolei,et al.Research on the relationship between water-conducting cracks in overlying strata and tensile deformation of rock formations［J］.Journal of Mining and Safety Engineering,2012,29(3):301-306.
［4］许延春,李俊成,刘世奇,等.综放开采覆岩“两带”高度的计算公式及适用性分析［J］.煤矿开采,2011,16(2):4-7,11. XU Yanchun,LI Juncheng,LIU Shiqi,et al.Calculation formula and applicability analysis of the height of overlying strata “two zones” in fully mechanized caving mining［J］.Coal Mining Technology,2011,16(2):4-7,11.
［5］孙庆先,牟义,杨新亮.红柳煤矿大采高综采覆岩“两带”高度的综合探测［J］.煤炭学报,2013,38(S2):283-286. SUN Qingxian,MOU Yi,YANG Xinliang.Comprehensive detection of the height of the “two zones” of the overlying strata in Hongliu Coal Mine with large mining height and fully mechanized mining［J］.Journal of China Coal Society,2013,38(S2):283-286.
［6］高保彬,王晓蕾,朱明礼,等.复合顶板高瓦斯厚煤层综放工作面覆岩“两带”动态发育特征［J］.岩石力学与工程学报,2012,31(S1):3444-3451. GAO Baobin,WANG Xiaolei,ZHU Mingli,et al.Dynamic development characteristics of overlying strata “two zones” in fully mechanized caving face with compound roof,high gas and thick seam［J］.Chinese Journal of Rock Mechanics and Engineering,2012,31(S1):3444-3451.
［7］舒宗运,黎灵,李宏杰.特厚煤层综放开采覆岩“两带”高度研究［J］.煤炭科学技术,2016,44(S1):52-54. SHU Zongyun,LI Ling,LI Hongjie.Research on the “two zones” height of overlying strata in fully mechanized caving mining in extra-thick coal seams［J］.Coal Science and Technology,2016,44(S1):52-54.
［8］康永华.覆岩性质对“两带”高度的影响［J］.煤矿开采,1998,3(1):52-54,64. KANG Yonghua.The influence of overlying rock properties on the height of “two belts”［J］.Coal Mining Technology,1998,3(1):52-54,64.
［9］崔峰,贾冲,来兴平，等.缓倾斜冲击倾向性顶板特厚煤层重复采动下覆岩两带发育规律研究［J］.采矿与安全工程学报,2020,37(3):514-524. CUI Feng,JIA Chong,LAI Xingping,et al.Research on the development law of the two overlying strata under repeated mining in the gentle sloping shock tendency roof and extra-thick coal seam［J］.Journal of Mining and Safety Engineering,2020,37(3):514-524.
［10］陈晓祥,苏承东,唐旭,等.饱水对煤层顶板碎石压实特征影响的试验研究［J］.岩石力学与工程学报,2014,33(S1):3318-3326. CHEN Xiaoxiang,SU Chengdong,TANG Xu,et al.Experimental study on the influence of water saturation on the compaction characteristics of coal roof crushed rocks［J］.Chinese Journal of Rock Mechanics and Engineering,2014,33(S1):3318-3326.
［11］郭广礼,缪协兴,张振南.老采空区破裂岩体变形性质研究［J］.科学技术与工程,2002,2(5):44-47. GUO Guangli,MIAO Xiexing,ZHANG Zhennan.Research on deformation properties of broken rock mass in old goaf［J］.Science Technology and Engineering,2002,2(5):44-47.
［12］汪北方,梁冰,王俊光,等.煤矿地下水库岩体碎胀特性试验研究［J］.岩土力学,2018,39(11):4086-4092，4101. WANG Beifang,LIANG Bing,WANG Junguang,et al.Experimental study on fracture expansion characteristics of coal mine underground reservoirs［J］.Rock and Soil Mechanics,2018,39(11):4086-4092，4101.
［13］黄炳香,刘长友,许家林.采动覆岩破断裂隙的贯通度研究［J］.中国矿业大学学报,2010,39(1):45-49. HUANG Bingxiang,LIU Changyou,XU Jialin.Research on the penetration of fractures in overburden strata caused by mining［J］.Journal of China University of Mining & Technology,2010,39(1):45-49.
［14］国家煤炭工业局.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.
［15］侯公羽,胡涛,李子祥，等.基于分布式光纤技术的采动影响下覆岩变形演化规律试验研究［J］.岩土力学,2020,41(3):970-979. HOU Gongyu,HU Tao,LI Zixiang,et al.Experimental study on the deformation and evolution of overburden rock under the influence of mining based on distributed optical fiber technology［J］.Rock and Soil Mechanics,2020,41(3):970-979.

相似文献/References:

[1]张红鸽,张钊,张伟,等.上覆岩层瓦斯卸压范围及流动规律的应用研究[J].中国安全生产科学技术,2012,8(1):32.
　ZHANG Hong-ge,ZHANG Zhao,ZHANG Wei.Researches on gas discharging pressure range and flow rules in overlying rock of coal seams[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2012,8(5):32.
[2]苏伟伟,王兆丰,陈向军.近距离煤层群倾向穿层钻孔合理布孔参数研究[J].中国安全生产科学技术,2015,11(7):56.[doi:10.11731/j.issn.1673-193x.2015.07.009]
　SU Wei-wei,WANG Zhang-feng,CHEN Xiang-jun.Study on reasonable hole arrangement parameters of inclining layer-through borehole in close distance coal seam group[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(5):56.[doi:10.11731/j.issn.1673-193x.2015.07.009]
[3]贾栋,姜德义,陈结,等.综放工作面覆岩破坏特征及裂隙演化相似模拟试验研究*[J].中国安全生产科学技术,2022,18(3):19.[doi:10.11731/j.issn.1673-193x.2022.03.003]
　JIA Dong,JIANG Deyi,CHEN Jie,et al.Similar simulation study on failure characteristics and fracture evolution of overlying strata in fully-mechanized caving face[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2022,18(5):19.[doi:10.11731/j.issn.1673-193x.2022.03.003]

备注/Memo

备注/Memo:
收稿日期： 2021-08-04；网络首发日期： 2022-03-30
* 基金项目： 国家自然科学基金项目(51174255)
作者简介： 谷文伟，硕士研究生，主要研究方向为矿山压力及岩层控制。
更新日期/Last Update: 2022-06-15