煤矿主井地基静压注浆治理井架沉降偏移技术研究
|
摘要
针对花园煤矿主副井井架基础发生持续快速沉降和不均匀沉降引起井架偏斜的问题,基于主副井井架沉降偏移实测数据和矿井工程地质条件,分析认为地基土层承载力低和基础受力不均匀是井架基础持续沉降的主要原因,实测主副井井架最大下沉量分别为70 mm和257 mm。为解决主副井架持续性沉降和偏移问题,提出了地基静压注浆加固方法并设计了井架基础注浆加固工艺,确定了注浆加固时的钻孔深度、注浆压力、抬升量以及注浆量。实测结果表明:井架地基注浆加固和注浆抬升基础后,副井井架FES、FEN、FWN和FWS分别抬升100、130、103、90 mm,不均匀沉降量由59 mm减小至19 mm,主井井架ZE和ZW分别抬升、162 mm,不均匀沉降量由23 mm减小至16 mm。结果表明本文提出的地基静压注浆加固法可有效控制和降低矿井井架沉降速度,可为同类矿井井架基础加固施工提供借鉴。
In order to solve the problem of derrick deviation caused by continuous rapid settlement and uneven settlement of the main and auxiliary shaft derrick foundation of the Huayuan coal mine,based on the measured data of settlement and mine engineering geological conditions,the analysis indicates that low bearing capacity of foundation and the uneven stress of foundation are the main reasons for continuous settlement of derrick foundation.The maximum subsidence of main and auxiliary shaft head frames are 70 mm and 257 mm respectively.In order to solve the problem of continuous settlement and offset of the main and auxiliary derricks,the ground static pressure grouting reinforcement method was proposed and the derrick foundation grouting reinforcement technology was designed. The drilling depth,grouting pressure and uplift and grouting amount were determined during grouting reinforcement. The measured results showed that after grouting reinforcement and grouting uplift foundation of the derrick foundation,the FES,FEN,FWN and FWS of auxiliary shaft derrick were lifted 100、130、103、90 mm respectively,and the uneven settlement was reduced from 59 mm to 19 mm,and the ZE,ZW of mine shaft derricks were lifted to 123 mm and 162 mm respectively,and the uneven settlement was reduced from 23 mm to 16 mm.The static pressure grouting method proposed in this paper can effectively control and reduce the settlement speed of mine derrick,which can provide reference for the reinforcement construction of similar mine derrick foundation.
In order to solve the problem of derrick deviation caused by continuous rapid settlement and uneven settlement of the main and auxiliary shaft derrick foundation of the Huayuan coal mine,based on the measured data of settlement and mine engineering geological conditions,the analysis indicates that low bearing capacity of foundation and the uneven stress of foundation are the main reasons for continuous settlement of derrick foundation.The maximum subsidence of main and auxiliary shaft head frames are 70 mm and 257 mm respectively.In order to solve the problem of continuous settlement and offset of the main and auxiliary derricks,the ground static pressure grouting reinforcement method was proposed and the derrick foundation grouting reinforcement technology was designed. The drilling depth,grouting pressure and uplift and grouting amount were determined during grouting reinforcement. The measured results showed that after grouting reinforcement and grouting uplift foundation of the derrick foundation,the FES,FEN,FWN and FWS of auxiliary shaft derrick were lifted 100、130、103、90 mm respectively,and the uneven settlement was reduced from 59 mm to 19 mm,and the ZE,ZW of mine shaft derricks were lifted to 123 mm and 162 mm respectively,and the uneven settlement was reduced from 23 mm to 16 mm.The static pressure grouting method proposed in this paper can effectively control and reduce the settlement speed of mine derrick,which can provide reference for the reinforcement construction of similar mine derrick foundation.
引文
[1]刘志强,王博,杜健民,等.新型单平台凿井井架在深大立井井筒施工中的应用[J].煤炭科学技术,2017,45(10):24-29.LIU Zhiqiang,WANG Bo,DU Jianmin,et al.New mine shaft sinking headframe with single platform applied toconstruction of deep and large diameter mine shaft[J].Coal Science and Technology,2017,45(10):24-29.
[2]孔德才.单侧斜撑式立井井架纠偏工艺研究[J].中国煤炭,2013,39(4):71-73.KONG Decai.Unilateral sprag-type vertical shaft headframe rectification process[J].China Coal,2013,39(4):71-73.
[3]肖启芳,李明,陈保淦,等.冻结立井井架基础不均匀沉降处理[J].建井技术,2009,30(4):37-39.XIAO Qifang,LI Ming,CHEN Baogan,et al.Freezing mine shaft headframe differential settlement[J].Mine Onstruction Technology,2009,30(4):37-39.
[4]田德文.山东省里彦煤矿副井井架纠偏方案[C]//郑州:全国矿山建设学术会议,2002:368-369.
[5]张海龙,贾万富,陈璋林.注浆法加固副井井架的研究应用[J].煤矿现代化,2016(2):7-9.ZHANG Hailong,JIA Wanfu,CHEN Zhanglin.application research of grouting reinforcing shaft headframe[J].Modernization of Coal Mines,2016(2):7-9.
[6]赵韦.箱型钢结构井架斜架基础加固及纠偏方案[J].山东煤炭科技,2012(5):49-50.ZHAO Wei.Box-type steel headframe inclined frame Foundation reinforcement and rectification program[J].Shandong Coal Science and Technology,2012(5):49-50.
[7]孙仕元,许少东,李翔,等.淮南矿区永久井架防融沉偏斜新技术[J].河南理工大学学报:自然科学版,2016,35(S2):166-168.SUN Shiyuan,XU Shaodong,LI Xiang,et al.Permanent headframe in Huainan thaw-proof deflection technology[J].Journal of Henan Polytechnic University:Natural Science Edition,2016,35(S2):166-168.
[8]臧培刚,王伟,马宏强,等.超深厚冲积层冻结井筒施工关键技术研究[J].煤炭科学技术,2017,45(8):90-97,141.ZANG Peigang,WANG Wei,MA Hongqiang,et al.Research on key construction technologies of frozen shaft inultra deep and thick alluvium[J].Coal Science and Technology,2017,45(8):90-97,141.
[9]张传扬,郑文华,冯小敏.某矿区井架移动变形监测方法探究[J].测绘与空间地理信息,2016,39(3):202-204.ZHANG Chuanyang,ZHENG Wenhua,FENG Xiaomin.Reserch on the deformation monitoring method of a derrick[J].Geomatics&Spatial Information Technology,2016,39(3):202-204.
[10]熊靖飞,李篷,王列平,等.矿井井架基础沉降预测中的Asaoka法和灰色模型[J].矿业工程研究,2013,28(2):6-9.XIONG Jingfei,LI Peng,WANG Lieping,et al.Asaoka method and grey model prediction in mine derrick settlement[J].Mineral Engineering Research,2013,28(2):6-9.
[11]王在泉,王广云,张维好,等.井架偏斜的分析预测与纠偏控制[J].金属矿山,2002,31(4):24-26.WANG Zaiquan,WANG Guangyun,ZHANG Weihao,et al.Analysis and forcast of shaft frame inclination and its rectification control[J].Metal Mine,2002,31(4):24-26.
[12]熊靖飞,王列平,苗小芒,等.矿井井架基础沉降监测基准网的稳定性分析[J].北京测绘,2013(6):16-18.XIONG Jingfei,WANG Lieping,MIAO Xiaomang,et al.The stability analysis of mine derrick basis subsidence monitoring reference network[J].Beijing Surveying&Mapping,2013(6):16-18.
[13]王帅.丁集矿副井井架基础沉降变形分析[J].煤炭技术,2008,32(5):119-120.WANG Shuai.Analysis of headframe settlement deformation rules of auxiliary shaft of dingji coal mine[J].Coal Technology,2008,32(5):119-120.
[14]赵亮.某矿工业车间纠偏及地基加固工程实例[J].山西建筑,2016,42(12):77-78.ZHAO Liang.An example of workshop rectification and foundation reinforcement in a mine industry[J].Shanxi Architect,2016,42(12):77-78.
[15]莫景逸,黄向平.某矿料堆场地基失稳原因分析[J].水运工程,2013(10):212-217.MO Jingyi,HUANG Xiangping.Analysis of causes for ground instability of a certain mineral reactor site[J].Water Transport Engineering,2013(10):212-217.
[16]唐辉.基于地基承载力赵固一矿沉陷区建筑物地基稳定性研究[D].焦作:河南理工大学,2012.
[17]马春艳.荆各庄矿塌陷区建筑地基稳定性研究[D].焦作:南京:河南理工大学,2011.
[18]谢仁追.宝钢马迹山矿石堆场地基加固设计[D].南京:河海大学,2006.
[19]曾学兴,罗泽华,黄国青,等.凡口矿地表沉降监测方法及成果分析[J].有色金属,1998(S1):94-99.ZENG Xuexing,LUO Zehua,HUANG Guoqing,et al.Monitoring methods and results of surface subsidence in Fankou Mine[J].Nonferrous Metals,1998(S1):94-99.
[20]王在泉,王广云,张维好,等.井架偏斜的分析预测与纠偏控制[J].金属矿山,2002,31(4):24-26.WANG Zaiquan,WANG Guangyun,ZHANG Weihao,et al.Analysis and prediction of derrick deflection and rectification control[J].Metal Mining,2002,31(4):24-26.
[21]谢哲夫.环形帷幕注浆治理井架地基不均匀沉降[J].有色金属,1995(1):23-26.XIE Zhefu.Non-uniform sedimentation of derrick foundation by grouting with ring curtain[J].Nonferrous Metals,1995(1):23-26.
[2]孔德才.单侧斜撑式立井井架纠偏工艺研究[J].中国煤炭,2013,39(4):71-73.KONG Decai.Unilateral sprag-type vertical shaft headframe rectification process[J].China Coal,2013,39(4):71-73.
[3]肖启芳,李明,陈保淦,等.冻结立井井架基础不均匀沉降处理[J].建井技术,2009,30(4):37-39.XIAO Qifang,LI Ming,CHEN Baogan,et al.Freezing mine shaft headframe differential settlement[J].Mine Onstruction Technology,2009,30(4):37-39.
[4]田德文.山东省里彦煤矿副井井架纠偏方案[C]//郑州:全国矿山建设学术会议,2002:368-369.
[5]张海龙,贾万富,陈璋林.注浆法加固副井井架的研究应用[J].煤矿现代化,2016(2):7-9.ZHANG Hailong,JIA Wanfu,CHEN Zhanglin.application research of grouting reinforcing shaft headframe[J].Modernization of Coal Mines,2016(2):7-9.
[6]赵韦.箱型钢结构井架斜架基础加固及纠偏方案[J].山东煤炭科技,2012(5):49-50.ZHAO Wei.Box-type steel headframe inclined frame Foundation reinforcement and rectification program[J].Shandong Coal Science and Technology,2012(5):49-50.
[7]孙仕元,许少东,李翔,等.淮南矿区永久井架防融沉偏斜新技术[J].河南理工大学学报:自然科学版,2016,35(S2):166-168.SUN Shiyuan,XU Shaodong,LI Xiang,et al.Permanent headframe in Huainan thaw-proof deflection technology[J].Journal of Henan Polytechnic University:Natural Science Edition,2016,35(S2):166-168.
[8]臧培刚,王伟,马宏强,等.超深厚冲积层冻结井筒施工关键技术研究[J].煤炭科学技术,2017,45(8):90-97,141.ZANG Peigang,WANG Wei,MA Hongqiang,et al.Research on key construction technologies of frozen shaft inultra deep and thick alluvium[J].Coal Science and Technology,2017,45(8):90-97,141.
[9]张传扬,郑文华,冯小敏.某矿区井架移动变形监测方法探究[J].测绘与空间地理信息,2016,39(3):202-204.ZHANG Chuanyang,ZHENG Wenhua,FENG Xiaomin.Reserch on the deformation monitoring method of a derrick[J].Geomatics&Spatial Information Technology,2016,39(3):202-204.
[10]熊靖飞,李篷,王列平,等.矿井井架基础沉降预测中的Asaoka法和灰色模型[J].矿业工程研究,2013,28(2):6-9.XIONG Jingfei,LI Peng,WANG Lieping,et al.Asaoka method and grey model prediction in mine derrick settlement[J].Mineral Engineering Research,2013,28(2):6-9.
[11]王在泉,王广云,张维好,等.井架偏斜的分析预测与纠偏控制[J].金属矿山,2002,31(4):24-26.WANG Zaiquan,WANG Guangyun,ZHANG Weihao,et al.Analysis and forcast of shaft frame inclination and its rectification control[J].Metal Mine,2002,31(4):24-26.
[12]熊靖飞,王列平,苗小芒,等.矿井井架基础沉降监测基准网的稳定性分析[J].北京测绘,2013(6):16-18.XIONG Jingfei,WANG Lieping,MIAO Xiaomang,et al.The stability analysis of mine derrick basis subsidence monitoring reference network[J].Beijing Surveying&Mapping,2013(6):16-18.
[13]王帅.丁集矿副井井架基础沉降变形分析[J].煤炭技术,2008,32(5):119-120.WANG Shuai.Analysis of headframe settlement deformation rules of auxiliary shaft of dingji coal mine[J].Coal Technology,2008,32(5):119-120.
[14]赵亮.某矿工业车间纠偏及地基加固工程实例[J].山西建筑,2016,42(12):77-78.ZHAO Liang.An example of workshop rectification and foundation reinforcement in a mine industry[J].Shanxi Architect,2016,42(12):77-78.
[15]莫景逸,黄向平.某矿料堆场地基失稳原因分析[J].水运工程,2013(10):212-217.MO Jingyi,HUANG Xiangping.Analysis of causes for ground instability of a certain mineral reactor site[J].Water Transport Engineering,2013(10):212-217.
[16]唐辉.基于地基承载力赵固一矿沉陷区建筑物地基稳定性研究[D].焦作:河南理工大学,2012.
[17]马春艳.荆各庄矿塌陷区建筑地基稳定性研究[D].焦作:南京:河南理工大学,2011.
[18]谢仁追.宝钢马迹山矿石堆场地基加固设计[D].南京:河海大学,2006.
[19]曾学兴,罗泽华,黄国青,等.凡口矿地表沉降监测方法及成果分析[J].有色金属,1998(S1):94-99.ZENG Xuexing,LUO Zehua,HUANG Guoqing,et al.Monitoring methods and results of surface subsidence in Fankou Mine[J].Nonferrous Metals,1998(S1):94-99.
[20]王在泉,王广云,张维好,等.井架偏斜的分析预测与纠偏控制[J].金属矿山,2002,31(4):24-26.WANG Zaiquan,WANG Guangyun,ZHANG Weihao,et al.Analysis and prediction of derrick deflection and rectification control[J].Metal Mining,2002,31(4):24-26.
[21]谢哲夫.环形帷幕注浆治理井架地基不均匀沉降[J].有色金属,1995(1):23-26.XIE Zhefu.Non-uniform sedimentation of derrick foundation by grouting with ring curtain[J].Nonferrous Metals,1995(1):23-26.