复杂构造带回采巷道松动圈确定与支护对策研究
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摘要
本文在分析大量工程实测和现场调查的基础上,采用理论分析和力学分析,对复杂构造带煤矿回采巷道松动圈及其支护对策进行了深入细致地研究,得出了巷道松动圈形成的力学机理和条件,影响巷道围岩松动圈的主要因素,回采巷道支护对策的确定,围岩应变特性。然后根据江西省新余矿业公司花鼓山煤矿D5煤层的地质条件和赋存状况,进行FLAC2D数值模拟分析,对锚杆参数进行优化:得出了在超前支承压力作用下,回采巷道顶板锚杆长度选取2.2m,帮锚杆长度选取2.2m,间排距选取0.8×0.8m时,对巷道围岩变形的控制效果良好,且变形及塑性区均趋于稳定的低值。并结合现场实测数据分析,确定本矿松动圈大致范围为1-1.5m,花鼓山矿回采巷道最佳选择方案为锚网支护。回采巷道无采动影响阶段:距离工作面64.8m～76.5m以外;采动影响阶段:距离工作面76.5m至44.3m的范围内,采动影响剧烈阶段:距离工作面44.3m以内。最后经过理论计算、现场实测,总结出回采巷道顶板锚杆长度选取2.0m,帮锚杆长度选取2.2m,间排距选取0.8×0.8m,对巷道松动圈控制效果最经济,最安全。本文研究成果对类似条件回采巷道支护对策的优化具有指导意义和参考价值。
Basing on a lot of data and on-the-spot investigations and adopting analysis of theory and mechanical analysis, this article has done deep and meticulous research on loose circle determination of mining roadway and supporting strategy in complex structural area in order to gain the main followings: roadway loose circle mechanism and condition of forming separation; the main factors of affecting loose circle in mining roadways; determination of supporting strategy in mining roadway; strain analysis of surrounding rocks. What’s more, basing on the geological condition and the occurrence of coal seam in Hua gu shan coal mine of Xin yu company No.5 coal seam, adopting FLAC2D numerical simulation, this article tries to optimize bolting optimization; under lead abutment pressure, when the length of roof bolt in mining roadways and ribs bolt are both chosen as 2.2meter, which of spacing is 0.8×0.8m, it can obtain a better effect in controlling deformation of surrounding rocks in roadway, what’s important, it’s deforming and plastic zone both trend to stable low parameter;next, according to the on-the-spot investigations, confirm roadway loose circle is 1.5m , the best mining roadway strategy is bolt-net support;no mining move effect stage: beyond 64.8m~76.5m in the working face ; mining move effect stage:among 44.3~76.5m in the working face;mining move violently effect stage: behind the 44.3m in the working face;based on theory calculation and field measurement , when the length of roof bolt in mining roadways and ribs bolt are separately both chosen as 2.0, 2.2meter, which of spacing is 0.8×0.8m, it can obtain the most effect and the most economy in controlling loose circle in roadway, Results in this paper have a certain instructive sense to mining roadway supporting strategy and similar condition of roadway in mining roadway.
Basing on a lot of data and on-the-spot investigations and adopting analysis of theory and mechanical analysis, this article has done deep and meticulous research on loose circle determination of mining roadway and supporting strategy in complex structural area in order to gain the main followings: roadway loose circle mechanism and condition of forming separation; the main factors of affecting loose circle in mining roadways; determination of supporting strategy in mining roadway; strain analysis of surrounding rocks. What’s more, basing on the geological condition and the occurrence of coal seam in Hua gu shan coal mine of Xin yu company No.5 coal seam, adopting FLAC2D numerical simulation, this article tries to optimize bolting optimization; under lead abutment pressure, when the length of roof bolt in mining roadways and ribs bolt are both chosen as 2.2meter, which of spacing is 0.8×0.8m, it can obtain a better effect in controlling deformation of surrounding rocks in roadway, what’s important, it’s deforming and plastic zone both trend to stable low parameter;next, according to the on-the-spot investigations, confirm roadway loose circle is 1.5m , the best mining roadway strategy is bolt-net support;no mining move effect stage: beyond 64.8m~76.5m in the working face ; mining move effect stage:among 44.3~76.5m in the working face;mining move violently effect stage: behind the 44.3m in the working face;based on theory calculation and field measurement , when the length of roof bolt in mining roadways and ribs bolt are separately both chosen as 2.0, 2.2meter, which of spacing is 0.8×0.8m, it can obtain the most effect and the most economy in controlling loose circle in roadway, Results in this paper have a certain instructive sense to mining roadway supporting strategy and similar condition of roadway in mining roadway.
引文
[1]董方庭.巷道围岩松动圈支护理论及应用技术[M].北京:煤炭工业出版社,2000.12
[2]何满朝,袁和生,靖洪文等.中国煤矿锚杆支护理论与实践[M].北京:科学出版社,2004.4
[3]董方庭.巷道围岩松动圈支护理论.中国岩石力学与工程学会软岩工程专业委员会第二届学术大会论文集.北京:1999
[4]周荣章,董方庭.软岩巷道围岩松动圈支护理论综述.中国煤炭学会市场经济条件下煤矿开采技术与策略问题研讨会.中国矿业大学:1997
[5]张金耀,歧红生等.松动圈测试在巷道支护设计中的作用.山西煤炭,2003.6 :57~61
[6]贾颖绚,宋红伟.巷道围岩松动圈测试技术与探讨.西部探矿工程.2004,10 (9):37~39
[7]康红普.回采巷道锚杆支护影响因素的FLAC分析.岩石力学与工程学报,1999,18(5):103~109
[8]董方庭,宋宏伟,鹿守敏,郭志宏,梁士杰.巷道围岩松动圈支护理论.煤炭学报,1994,19(1):21~32
[9]郭志宏,周希圣,何胜春.巷道支护的围岩松动圈分类方法.建井技术,1994,4(5):62~66
[10]胡广全,吕光华.灰色系统理论在煤矿中的应用.山西矿业学院学报,1993,(6)
[11]张先尘,钱鸣高.中国采煤学[M].北京:煤炭工业出版社,2003:455~458
[12]田昌贵.声波测试技术在丰山铜矿的应用.矿业研究与开发,2002,(10)
[13]刘刚,宋宏伟.围岩松动圈影响因素的数值模拟.
[14]宋宏伟,郭志宏,董方庭.围岩松动圈巷道支护理论的基本观点.建井技术,1994,(4、5)
[15]鹿守敏,靖洪文.巷道锚喷支护机理研究与实践.建井技术, 1994,(4、5)
[16]付国彬,靖洪文,徐金海,冯耀男.巷道围岩松动圈随采深变化的规律.建井技术,1994,(4、5)
[17]周希圣,陈明雄,王朝辉,董方庭.围岩松动圈灰色预测研究.煤炭学报,1997,6(2)15~16
[18]史兴国.巷道围岩松动圈理论的发展.河北煤炭,1995(4)
[19]郭志宏,董方庭.巷道围岩松动圈与巷道支护.矿山压力与顶板管理,1995,(3、4):111~114
[20]吴文金,陈克清.岩体声波测试在煤矿巷道工程地质研究中的应用.中国煤田地质,2000,12(2):101~112
[21]刘思蜂,邓聚龙.GM(1.1)模型的适用范围.系统工程理论与实践,2000,5
[22]王焕文,王继良.锚喷支护[M].北京::煤炭工业出版社,1989
[23]高树棠,董方庭.用围岩松动圈研究锚喷支护参数[J] .煤炭科学技术,1987, (12)
[24]陈俊成,于展绅.利用松动圈进行回采巷道锚杆支护改革[J].山东煤炭科技,2000, 4:30~32
[25]李效甫等编著.回采巷道支护形式与参数合理选择专家系统[M].煤炭工业出版社,1993,1
[26]周维垣.高等岩石力学[M].北京:水利水电出版社,1990:362~403
[27]钱鸣高,刘听成.矿山压力及其控制[M].北京:煤炭工业出版社,1984
[28]缪协兴,钱鸣高.采场围岩整体结构与砌体梁力学模型[J].矿山压力与顶板管理,1995,3(4):3 ~12
[29]贾喜荣.矿山岩层力学[M].北京:煤炭工业出版社,1997
[30]陈炎光,钱鸣高.中国煤矿采场围岩控制[M].徐州:中国矿业大学出版社,1995
[31]钱鸣高,石平五.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2003
[32]蔡美峰,何满潮,刘东燕.岩石力学与工程[M].北京:科学出版社,2002
[33]宋振骐.实用矿山压力与控制[M].徐州:中国矿业大学出版社,1988.
[34]刘波,韩彦辉.FLAC原理、实例与应用指南[M].北京:人民交通出版社,2005
[35]徐芝纶.弹性力学[M].北京:高等教育出版社,1990
[36]李德忠等.深部矿井开采技术[M].徐州:中国矿业大学出版社,2005,(5)
[37]谢和平等.岩石力学[M] .北京:科学出版社,2004,(5)
[38]初明祥等.回采巷道松动圈厚度的确定和控制[J] .煤炭科学技术,2003 (9)
[39]张忠温等.回采巷道围岩稳定性分类及支护型式确定[J] .矿山压力与顶板管理,2002 (2)
[40]张金山等.矿山巷道支护设计专家咨询系统[J] .金属矿山,2003 (5)
[41]朱明亮.矿山巷道收敛量测与分析[J] .矿业研究与开发,1999 (12)
[42]曹五福,华心祝回采巷道锚杆支护设计[J] .矿山压力与顶板管理,2003 (1)
[43] ITASCA Consulting Group. Inc. USER’S GUIDE 1999[M]
[44] ITASCA Consulting Group. Inc. FLAC Basics 1999[M]
[45] ITASCA Consulting Group. Inc. THEORY AND BACKGROUND 1999[M]
[46]赵铁锤.在全国国有重点煤矿安全基础管理工作座谈会上的讲话[EB/OL].http://www.chinasafety.gov.cn/zhengwugongkai/2006-09/29/concent_194757.htm
[47]郑雨天.岩石力学的弹塑粘性理论基础[M] .北京:煤炭工业工业出版社,1988 (8)
[48]高明中,余忠林.煤矿开采沉陷预测的数值模拟[J].安徽理工大学学报(自然科学版),2003,23(1):11~16
[49]涂敏.潘谢矿区采动岩体裂隙发育高度的研究[J].煤炭学报,2004,29(6):641~645
[50]李效莆.回采巷道支护形式与参数合理选择专家系统[M] .煤炭工业出版社,1993
[51]谈鸣时.矿井支护设计[M] .中国矿业大学出版社,1991
[52]刑福康.煤矿支护手册[M] .煤炭工业出版社,1993
[53]付国彬.破裂状态围岩巷道变形量计算的几何算法.中国矿业大学学报,1998 (2):185~188
[54]葛修润.关于岩石今过程曲线分类新见解.岩石工程理论与实践,1992
[55]宋宏伟.煤巷围岩松动圈规律研究[J].煤炭学报,2002, 27 (1):31~35
[56]于忠久,赵同彬.围岩松动圈理论及其在巷道支护中的应用[J].煤炭技术,2004,23 (8) :11~13
[57]刘刚.矩形巷道围岩松动圈分布规律研究[D] .徐州:中国矿业大学,2000
[58] Campoli,A.A.Variables Affecting ResinAnchorage Proformance in Unites Roof Bolting Systems[J].Proceeding ,RoofBolting in Mining,RWTHAachen,Germany, 2001,pp:19~28
[59] Mark,C.Analysis of coal mine loose circle.Proceedings, 20th International Conference on loose circle Control in Mining.Morgantown, WV ,West Virginia University,2001,pp:218~225
[60] Fang ting Dong .Broken rock zone and its support theory. Proc of 7th Grouod Control Conf, 1988
[61] X.R.Ge&Y.Xiang.A new numerical model of rock bolts used in jointed rock In Tunnels and Underground Structures Edited:Jiang Zhao.A.A.Balkema,2000,pp:290~300
[2]何满朝,袁和生,靖洪文等.中国煤矿锚杆支护理论与实践[M].北京:科学出版社,2004.4
[3]董方庭.巷道围岩松动圈支护理论.中国岩石力学与工程学会软岩工程专业委员会第二届学术大会论文集.北京:1999
[4]周荣章,董方庭.软岩巷道围岩松动圈支护理论综述.中国煤炭学会市场经济条件下煤矿开采技术与策略问题研讨会.中国矿业大学:1997
[5]张金耀,歧红生等.松动圈测试在巷道支护设计中的作用.山西煤炭,2003.6 :57~61
[6]贾颖绚,宋红伟.巷道围岩松动圈测试技术与探讨.西部探矿工程.2004,10 (9):37~39
[7]康红普.回采巷道锚杆支护影响因素的FLAC分析.岩石力学与工程学报,1999,18(5):103~109
[8]董方庭,宋宏伟,鹿守敏,郭志宏,梁士杰.巷道围岩松动圈支护理论.煤炭学报,1994,19(1):21~32
[9]郭志宏,周希圣,何胜春.巷道支护的围岩松动圈分类方法.建井技术,1994,4(5):62~66
[10]胡广全,吕光华.灰色系统理论在煤矿中的应用.山西矿业学院学报,1993,(6)
[11]张先尘,钱鸣高.中国采煤学[M].北京:煤炭工业出版社,2003:455~458
[12]田昌贵.声波测试技术在丰山铜矿的应用.矿业研究与开发,2002,(10)
[13]刘刚,宋宏伟.围岩松动圈影响因素的数值模拟.
[14]宋宏伟,郭志宏,董方庭.围岩松动圈巷道支护理论的基本观点.建井技术,1994,(4、5)
[15]鹿守敏,靖洪文.巷道锚喷支护机理研究与实践.建井技术, 1994,(4、5)
[16]付国彬,靖洪文,徐金海,冯耀男.巷道围岩松动圈随采深变化的规律.建井技术,1994,(4、5)
[17]周希圣,陈明雄,王朝辉,董方庭.围岩松动圈灰色预测研究.煤炭学报,1997,6(2)15~16
[18]史兴国.巷道围岩松动圈理论的发展.河北煤炭,1995(4)
[19]郭志宏,董方庭.巷道围岩松动圈与巷道支护.矿山压力与顶板管理,1995,(3、4):111~114
[20]吴文金,陈克清.岩体声波测试在煤矿巷道工程地质研究中的应用.中国煤田地质,2000,12(2):101~112
[21]刘思蜂,邓聚龙.GM(1.1)模型的适用范围.系统工程理论与实践,2000,5
[22]王焕文,王继良.锚喷支护[M].北京::煤炭工业出版社,1989
[23]高树棠,董方庭.用围岩松动圈研究锚喷支护参数[J] .煤炭科学技术,1987, (12)
[24]陈俊成,于展绅.利用松动圈进行回采巷道锚杆支护改革[J].山东煤炭科技,2000, 4:30~32
[25]李效甫等编著.回采巷道支护形式与参数合理选择专家系统[M].煤炭工业出版社,1993,1
[26]周维垣.高等岩石力学[M].北京:水利水电出版社,1990:362~403
[27]钱鸣高,刘听成.矿山压力及其控制[M].北京:煤炭工业出版社,1984
[28]缪协兴,钱鸣高.采场围岩整体结构与砌体梁力学模型[J].矿山压力与顶板管理,1995,3(4):3 ~12
[29]贾喜荣.矿山岩层力学[M].北京:煤炭工业出版社,1997
[30]陈炎光,钱鸣高.中国煤矿采场围岩控制[M].徐州:中国矿业大学出版社,1995
[31]钱鸣高,石平五.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2003
[32]蔡美峰,何满潮,刘东燕.岩石力学与工程[M].北京:科学出版社,2002
[33]宋振骐.实用矿山压力与控制[M].徐州:中国矿业大学出版社,1988.
[34]刘波,韩彦辉.FLAC原理、实例与应用指南[M].北京:人民交通出版社,2005
[35]徐芝纶.弹性力学[M].北京:高等教育出版社,1990
[36]李德忠等.深部矿井开采技术[M].徐州:中国矿业大学出版社,2005,(5)
[37]谢和平等.岩石力学[M] .北京:科学出版社,2004,(5)
[38]初明祥等.回采巷道松动圈厚度的确定和控制[J] .煤炭科学技术,2003 (9)
[39]张忠温等.回采巷道围岩稳定性分类及支护型式确定[J] .矿山压力与顶板管理,2002 (2)
[40]张金山等.矿山巷道支护设计专家咨询系统[J] .金属矿山,2003 (5)
[41]朱明亮.矿山巷道收敛量测与分析[J] .矿业研究与开发,1999 (12)
[42]曹五福,华心祝回采巷道锚杆支护设计[J] .矿山压力与顶板管理,2003 (1)
[43] ITASCA Consulting Group. Inc. USER’S GUIDE 1999[M]
[44] ITASCA Consulting Group. Inc. FLAC Basics 1999[M]
[45] ITASCA Consulting Group. Inc. THEORY AND BACKGROUND 1999[M]
[46]赵铁锤.在全国国有重点煤矿安全基础管理工作座谈会上的讲话[EB/OL].http://www.chinasafety.gov.cn/zhengwugongkai/2006-09/29/concent_194757.htm
[47]郑雨天.岩石力学的弹塑粘性理论基础[M] .北京:煤炭工业工业出版社,1988 (8)
[48]高明中,余忠林.煤矿开采沉陷预测的数值模拟[J].安徽理工大学学报(自然科学版),2003,23(1):11~16
[49]涂敏.潘谢矿区采动岩体裂隙发育高度的研究[J].煤炭学报,2004,29(6):641~645
[50]李效莆.回采巷道支护形式与参数合理选择专家系统[M] .煤炭工业出版社,1993
[51]谈鸣时.矿井支护设计[M] .中国矿业大学出版社,1991
[52]刑福康.煤矿支护手册[M] .煤炭工业出版社,1993
[53]付国彬.破裂状态围岩巷道变形量计算的几何算法.中国矿业大学学报,1998 (2):185~188
[54]葛修润.关于岩石今过程曲线分类新见解.岩石工程理论与实践,1992
[55]宋宏伟.煤巷围岩松动圈规律研究[J].煤炭学报,2002, 27 (1):31~35
[56]于忠久,赵同彬.围岩松动圈理论及其在巷道支护中的应用[J].煤炭技术,2004,23 (8) :11~13
[57]刘刚.矩形巷道围岩松动圈分布规律研究[D] .徐州:中国矿业大学,2000
[58] Campoli,A.A.Variables Affecting ResinAnchorage Proformance in Unites Roof Bolting Systems[J].Proceeding ,RoofBolting in Mining,RWTHAachen,Germany, 2001,pp:19~28
[59] Mark,C.Analysis of coal mine loose circle.Proceedings, 20th International Conference on loose circle Control in Mining.Morgantown, WV ,West Virginia University,2001,pp:218~225
[60] Fang ting Dong .Broken rock zone and its support theory. Proc of 7th Grouod Control Conf, 1988
[61] X.R.Ge&Y.Xiang.A new numerical model of rock bolts used in jointed rock In Tunnels and Underground Structures Edited:Jiang Zhao.A.A.Balkema,2000,pp:290~300