任楼矿5_1-7_2煤层段岩体工程地质力学特征及其稳定性评价
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摘要
本论文针对任楼煤矿在开采72煤过程中巷道破坏严重的情况,应用沉积岩石学、岩石力学、构造地质学、工程地质学和模糊数学等理论和方法,系统地研究了任楼煤矿5_1-7_2煤层段的岩石组成、岩性分区、岩体构造特征、岩石物理力学特征、岩石质量、岩组类型等,探讨了煤层段工程地质力学特征对煤层段岩体稳定性的影响。结合研究区的实际情况,确定了煤层段岩体稳定性的评价指标即断裂分维值、单轴抗压强度值、平面变形系数和岩性组合值,利用“双权重”方法确定了各影响因素的权重,采用灰色模糊综合评价的方法,评价了5_1-7_2煤层段的岩体稳定程度。评价结果为任楼煤矿的巷道布置、支护形式选择、顶板管理提供了依据,为减少设计的盲目性、降低成本打下良好的基础。主要结论:5_1-7_2煤层段岩性以粉砂-泥岩区和泥岩区为主,它们大约占到85%;5_1-7_2煤层段岩体结构以碎裂和块裂为主,褶皱变形程度以中等发育和较发育为主;5_1-7_2煤层段岩石总体RQD值在75%以下,岩石质量一般的占大部分。5_1-7_2煤层段,大部分为泥岩页岩岩组,这种类型的岩体,稳定性较差;加权单向抗压强度值大部分在30MPa~60 MPa之间,中等强度的占大部分;把断裂分维值和褶皱平面变形系数作为模糊综合评价的因素,为煤层段岩体稳定性定量评价提供了新思路;5_1-7_2煤层段岩体在研究区中,极不稳定区和不稳定区占65%,较稳定区的占25%,稳定区占10%。
According to the severe situations of roadway deformation in the course of mining 72 coal seam of Renlou coal mine,Based on theories and methods of sedimentary petrology,rock mechanics,structural geology,geological engineering and fuzzy mathematics,this paper systematically rock composition, lithology zone, structure characteristics, rock mechanics characteristics, rock quality, petrofabric types were systematically analyzed.The influence of rockmass engineering geological mechnical characteristics of 5_1-7_2 coal seam section of Renlou coal mine to the rockmass stability were discussed. Combined with actual situation of the research area, evaluation indexes of coal seam section rockmass was determined,namely fault fractal dimension,compressive strength, planar deformation coefficients of folds,lithology combination value.Based on the methods of double weight, weights of all influencing factors were determined.On the basis of fuzzy comprehensive evaluation, the rockmass stability of 5_1-7_2 coal seam section was evaluated.The evaluation results supplied scientific basis of roadway layout,selection of support form,roof management to Renlou coal mine. Main conclusions are as follows: Region of siltstone– mudstone and mudstone dominated most of the 5_1-7_2 coal seam section , and they accounted for30%; Most structures of 5_1-7_2 coal seam section were block fracture and fragmention.Medium development and comparative development of folding deformation degree was major ;The weighted RQD of 5_1-7_2 coal seam section was all below 75% and“the common rock”accounted for most of the rock. Most of the petrofabric of 5_1-7_2 coal seam section was mudstone-shale petrofabri,and its stability was worse; Fault fractal dimension, planar deformation coefficients was treated as evaluation factors,which supplied a new way to the evaluation of rockmass stability.In the research area, extremely unstable area and unstable area accounted for 65%,relative stable area accounted for 25%, stable area. accounted for10%.
According to the severe situations of roadway deformation in the course of mining 72 coal seam of Renlou coal mine,Based on theories and methods of sedimentary petrology,rock mechanics,structural geology,geological engineering and fuzzy mathematics,this paper systematically rock composition, lithology zone, structure characteristics, rock mechanics characteristics, rock quality, petrofabric types were systematically analyzed.The influence of rockmass engineering geological mechnical characteristics of 5_1-7_2 coal seam section of Renlou coal mine to the rockmass stability were discussed. Combined with actual situation of the research area, evaluation indexes of coal seam section rockmass was determined,namely fault fractal dimension,compressive strength, planar deformation coefficients of folds,lithology combination value.Based on the methods of double weight, weights of all influencing factors were determined.On the basis of fuzzy comprehensive evaluation, the rockmass stability of 5_1-7_2 coal seam section was evaluated.The evaluation results supplied scientific basis of roadway layout,selection of support form,roof management to Renlou coal mine. Main conclusions are as follows: Region of siltstone– mudstone and mudstone dominated most of the 5_1-7_2 coal seam section , and they accounted for30%; Most structures of 5_1-7_2 coal seam section were block fracture and fragmention.Medium development and comparative development of folding deformation degree was major ;The weighted RQD of 5_1-7_2 coal seam section was all below 75% and“the common rock”accounted for most of the rock. Most of the petrofabric of 5_1-7_2 coal seam section was mudstone-shale petrofabri,and its stability was worse; Fault fractal dimension, planar deformation coefficients was treated as evaluation factors,which supplied a new way to the evaluation of rockmass stability.In the research area, extremely unstable area and unstable area accounted for 65%,relative stable area accounted for 25%, stable area. accounted for10%.
引文
[1]孟召平等.煤层顶底板岩石成分和结构及其力学性质的关系[J].岩石力学与工程学报,2000,19(2):136-139
[2]孟召平.煤层顶板沉积岩体结构及其对顶板稳定性的影响[博士学位论文].北京:中国矿业大学
[3]杨智,吴基文等.龙东煤矿中央采区7煤层覆岩工程地质特征研究[J].煤炭工程,2007,3
[4]吴基文等.任楼矿基岩风化带工程地质特征研究[J].中国煤田地质,2000,4
[5]陈荣万.影响煤层顶底板稳定性的地质因素[J].煤矿开采,2003,12,8(4)
[6]陈钟恵等.煤和煤的沉积环境[M].中国地质大学出版社,1988,10
[7]孟召平.煤层顶底板沉积岩体结构及其对顶底板稳定性的影响[D].北京:中国矿业大学,1999.5
[8]田开铭,万力.各向异性裂隙介质渗透性的研究与评价[M].北京:学苑出版社,1989
[9]于双忠.煤矿工程地质研究[M].北京:中国矿业大学出版社,1991.6
[10]蔡美峰等.岩石力学与工程[M].北京:科学出版社.2002,8
[11]郑永学.矿山岩体力学[M].北京:冶金工业出版社.1988,4
[12]康健等.未确知数学在煤层顶底板稳定性分析中的研究[J].黑龙江科技学院学报,2007,3
[13]李增学.断距和落差的确定[J].山东矿业学院学报,1985
[14]李增学.矿井煤层构造破坏综合指标评判计分法[J].矿井地质与勘探,1990
[15]李增学,马兴祥.实用矿井地质研究一方法与进展[M].北京:地质出版社,1993,1
[16]彭向峰,于双忠.煤层顶底板工程地质分类方案初步研究[J].煤田地质与勘探,1997,(06).9
[17]丁述理,李彩惠.煤田地质勘探阶段煤层顶底板稳定性评价方法的初步探讨[J].中国煤田地质,1994,(01)
[18]涂敏.运用模糊聚类法分析煤层顶底板稳定性[J].矿山压力与顶底板管理,1995,3
[19]刘衡秋等.模糊综合评判在煤层顶底板稳定性评价的应用[J].煤田地质与勘探,2002,4
[20]曹庆奎等.煤层顶底板稳定性的加权灰关联评价模型[J].河北建筑科技学院学报,2004 (02)
[21]刘海燕.兖州煤田主采煤层顶板稳定性评价[D].青岛:山东科技大学,2004
[22] Ferm J C,et al. A study of roof falls in underground mines on the Pocahontas 3seam ,Southern West Virginia and southwestern Virginia [C].United States Department of interior,Bureau of Mines.Final Report on Contract NO.H0230028,1978
[23]ElliottR E .The mine geologist and risk reduction [J].The Mining Engineer,1974,(133):173~184
[24] Horne J C ,Ferm J C ,Carucciio F T ,Baganz B P .Depositional models in coal exploration and mine planning in appalachian region [J],APPG,1978,62(12):2379~2411
[25] Hylbert D V.Developing geological structural criteria for predicting unstable mine roof rocks[C].Bumines Open File Rept 9- 178,United States Department of the Interior,1977
[26] Alexander J 1989.Deltas or coastal plain with an example of the controversy from the Middle Jurassic of Yorkshire,in M. K.G Whateley and K. T. Pickering,eds,Deltas:Sites and traps for fossil fuels:Geological Society Special Publication 41:pll19.
[27] Barlow J A. and J.D. Haun,1966,Regional stratigraphy of Frontier Formation and relation to Salt Creek field Wyoming: AAPG Bulletin. v .50:p2185-2196
[28] Barrell J 1912.Criteria for the recognition of ancient delta depositn: Geological Society of America Bulletin,v.23:p377-446
[29] Beaumont C 1981.Foreland basins:Geophysical Journal of the Royal Society,v.65:p291-329
[30]唐东旗.断裂带岩体工程地质力学特征[硕士学位论文][D].淮南:安徽理工大学,2003
[31]贾海平.浅析沙沟岔井田煤层顶底板工程地质特征[J].西部探矿,2008,9:143-145
[32]刘宝珺.沉积岩石学[M].北京:地质出版社,1980,7:99~103
[33]李相然.工程地质学[M].北京:中国电力出版社,2006,2:51
[34]蔡君.任楼煤矿地质构造特征及发育规律[J].煤炭技术,2006,10,25(10):104~106
[35]孟召平,苏永华.沉积岩体力学理论与方法[M].北京:科学技术出版社,2006,9:206~216
[36]聂明军等.侏罗纪煤田主采煤层顶板稳定性分析[J].煤炭工程,2008:91-93
[37]凌贤长等.岩体力学[M].哈尔滨:哈尔滨工业大学出版社,2002,6:56~57
[38]陈伊清.岩石质量指标RQD的应用[J].水利科技,2002,1:48~49
[39]谢和平.岩石力学[M].北京:科学出版社,2004,5
[40]张永兴.岩石力学[M].北京:中国建筑工业出版社,2008,4
[41]吴香尧.岩组学导论[M].重庆:重庆出版社,1986,6
[42]邓聚龙.灰色系统理论教程[M].武昌华中理工大学出版社,1990,7:5~13
[43]李云林等.模糊综合评价中权值的确定和合成算子的选择[J].计算机工程与应用,2006,2:38~39
[44]窦磊,周永章等.针对土壤重金属污染评价的模糊数学模型的改进与应用[J].土壤,2007,2,38(1):101~104
[45]耿献文,马全礼等.矿山压力测控技术[M].徐州:中国矿业大学出版社,2002,1:190~192
[46]张保东.利用煤田地质勘探成果资料评价煤层顶板稳定性方法[J].煤矿安全,2007,10:73~75
[47]刘海燕等.兖州煤田主采煤层顶板稳定性特征分析[J].岩石力学与工程学报,2006,7,25(7):1449~1456
[48]沈珍瑶,况旭.环境质量评价中隶属函数白化函数概念的发展[J].环境保护,1997,10(2):16~18
[49]张立杰等.聚类分析方法及其在水文地质分析中的应用[J].长春科技大学学报,1999,10,29(4):349-354
[50]李安贵,张志宏等.模糊数学及其应用[M].北京:冶金工业出版社,2005,8:148~171
[2]孟召平.煤层顶板沉积岩体结构及其对顶板稳定性的影响[博士学位论文].北京:中国矿业大学
[3]杨智,吴基文等.龙东煤矿中央采区7煤层覆岩工程地质特征研究[J].煤炭工程,2007,3
[4]吴基文等.任楼矿基岩风化带工程地质特征研究[J].中国煤田地质,2000,4
[5]陈荣万.影响煤层顶底板稳定性的地质因素[J].煤矿开采,2003,12,8(4)
[6]陈钟恵等.煤和煤的沉积环境[M].中国地质大学出版社,1988,10
[7]孟召平.煤层顶底板沉积岩体结构及其对顶底板稳定性的影响[D].北京:中国矿业大学,1999.5
[8]田开铭,万力.各向异性裂隙介质渗透性的研究与评价[M].北京:学苑出版社,1989
[9]于双忠.煤矿工程地质研究[M].北京:中国矿业大学出版社,1991.6
[10]蔡美峰等.岩石力学与工程[M].北京:科学出版社.2002,8
[11]郑永学.矿山岩体力学[M].北京:冶金工业出版社.1988,4
[12]康健等.未确知数学在煤层顶底板稳定性分析中的研究[J].黑龙江科技学院学报,2007,3
[13]李增学.断距和落差的确定[J].山东矿业学院学报,1985
[14]李增学.矿井煤层构造破坏综合指标评判计分法[J].矿井地质与勘探,1990
[15]李增学,马兴祥.实用矿井地质研究一方法与进展[M].北京:地质出版社,1993,1
[16]彭向峰,于双忠.煤层顶底板工程地质分类方案初步研究[J].煤田地质与勘探,1997,(06).9
[17]丁述理,李彩惠.煤田地质勘探阶段煤层顶底板稳定性评价方法的初步探讨[J].中国煤田地质,1994,(01)
[18]涂敏.运用模糊聚类法分析煤层顶底板稳定性[J].矿山压力与顶底板管理,1995,3
[19]刘衡秋等.模糊综合评判在煤层顶底板稳定性评价的应用[J].煤田地质与勘探,2002,4
[20]曹庆奎等.煤层顶底板稳定性的加权灰关联评价模型[J].河北建筑科技学院学报,2004 (02)
[21]刘海燕.兖州煤田主采煤层顶板稳定性评价[D].青岛:山东科技大学,2004
[22] Ferm J C,et al. A study of roof falls in underground mines on the Pocahontas 3seam ,Southern West Virginia and southwestern Virginia [C].United States Department of interior,Bureau of Mines.Final Report on Contract NO.H0230028,1978
[23]ElliottR E .The mine geologist and risk reduction [J].The Mining Engineer,1974,(133):173~184
[24] Horne J C ,Ferm J C ,Carucciio F T ,Baganz B P .Depositional models in coal exploration and mine planning in appalachian region [J],APPG,1978,62(12):2379~2411
[25] Hylbert D V.Developing geological structural criteria for predicting unstable mine roof rocks[C].Bumines Open File Rept 9- 178,United States Department of the Interior,1977
[26] Alexander J 1989.Deltas or coastal plain with an example of the controversy from the Middle Jurassic of Yorkshire,in M. K.G Whateley and K. T. Pickering,eds,Deltas:Sites and traps for fossil fuels:Geological Society Special Publication 41:pll19.
[27] Barlow J A. and J.D. Haun,1966,Regional stratigraphy of Frontier Formation and relation to Salt Creek field Wyoming: AAPG Bulletin. v .50:p2185-2196
[28] Barrell J 1912.Criteria for the recognition of ancient delta depositn: Geological Society of America Bulletin,v.23:p377-446
[29] Beaumont C 1981.Foreland basins:Geophysical Journal of the Royal Society,v.65:p291-329
[30]唐东旗.断裂带岩体工程地质力学特征[硕士学位论文][D].淮南:安徽理工大学,2003
[31]贾海平.浅析沙沟岔井田煤层顶底板工程地质特征[J].西部探矿,2008,9:143-145
[32]刘宝珺.沉积岩石学[M].北京:地质出版社,1980,7:99~103
[33]李相然.工程地质学[M].北京:中国电力出版社,2006,2:51
[34]蔡君.任楼煤矿地质构造特征及发育规律[J].煤炭技术,2006,10,25(10):104~106
[35]孟召平,苏永华.沉积岩体力学理论与方法[M].北京:科学技术出版社,2006,9:206~216
[36]聂明军等.侏罗纪煤田主采煤层顶板稳定性分析[J].煤炭工程,2008:91-93
[37]凌贤长等.岩体力学[M].哈尔滨:哈尔滨工业大学出版社,2002,6:56~57
[38]陈伊清.岩石质量指标RQD的应用[J].水利科技,2002,1:48~49
[39]谢和平.岩石力学[M].北京:科学出版社,2004,5
[40]张永兴.岩石力学[M].北京:中国建筑工业出版社,2008,4
[41]吴香尧.岩组学导论[M].重庆:重庆出版社,1986,6
[42]邓聚龙.灰色系统理论教程[M].武昌华中理工大学出版社,1990,7:5~13
[43]李云林等.模糊综合评价中权值的确定和合成算子的选择[J].计算机工程与应用,2006,2:38~39
[44]窦磊,周永章等.针对土壤重金属污染评价的模糊数学模型的改进与应用[J].土壤,2007,2,38(1):101~104
[45]耿献文,马全礼等.矿山压力测控技术[M].徐州:中国矿业大学出版社,2002,1:190~192
[46]张保东.利用煤田地质勘探成果资料评价煤层顶板稳定性方法[J].煤矿安全,2007,10:73~75
[47]刘海燕等.兖州煤田主采煤层顶板稳定性特征分析[J].岩石力学与工程学报,2006,7,25(7):1449~1456
[48]沈珍瑶,况旭.环境质量评价中隶属函数白化函数概念的发展[J].环境保护,1997,10(2):16~18
[49]张立杰等.聚类分析方法及其在水文地质分析中的应用[J].长春科技大学学报,1999,10,29(4):349-354
[50]李安贵,张志宏等.模糊数学及其应用[M].北京:冶金工业出版社,2005,8:148~171