枣木高速公路塌陷区探测及残余变形预测
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摘要
为了对采空区沉陷段准确做出评估并提出有效的处理措施,采用钻孔、高分辨率地震法、电法、声波等方法对该区段空区位置进行探测,并在现场安置了原位监测仪器VWM型振弦式多点变位计对岩层移动进行长期观测,同时联合理论计算对该段进行残余变形预测。结果表明:采空区处于岩石充填或半充填状态,空间高度在2~8 m之间,暂时处于相对稳定状态。经预测还将有100~400 mm的残余变形,提出了采空区采取充填注浆措施进行治理。在没有完全掌握采掘工程平面图的情况下,可以参照本项目中的流程进行探测、监测、预测及治理,对类似工程有参考作用。
In order to analyze the influence of goaf subsidence on highway and put forward some effective solutions,a variety of measures,such as mined-out area detection by drilling,high resolution seismic method,electrical method and acoustic methods were used.A multipoint displacement monitoring instrument was placed to carry out long-term observation on the strata movement,and the residual deformation was calculated.Results show that when in full filling or half-filling with rock,and the space height is between 2 to 8 meters,the goaf is temporarily relatively stable.The goaf will also have 100~400 mm risidual deformation by prediction,and the filling grouting measures for mined-out area are proposed to control the deformation.Under the circumstance of incomplete mastery of excavation planform,this project can be used as a reference.
In order to analyze the influence of goaf subsidence on highway and put forward some effective solutions,a variety of measures,such as mined-out area detection by drilling,high resolution seismic method,electrical method and acoustic methods were used.A multipoint displacement monitoring instrument was placed to carry out long-term observation on the strata movement,and the residual deformation was calculated.Results show that when in full filling or half-filling with rock,and the space height is between 2 to 8 meters,the goaf is temporarily relatively stable.The goaf will also have 100~400 mm risidual deformation by prediction,and the filling grouting measures for mined-out area are proposed to control the deformation.Under the circumstance of incomplete mastery of excavation planform,this project can be used as a reference.
引文
[1]童立元,邱钰,刘松玉,等.高速公路与下伏煤矿采空区相互作用规律探讨[J].岩石力学与工程学报,2010,29(11):2271-2276.
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[8]王忠昶.倾斜煤层开采离层空间发育特征的数值分析[J].广西大学学报:自然科学版,2010,35(4):678-683.
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[2]童立元,邱钰,刘松玉,等.高速公路下伏采空区问题国内外研究现状及进展[J].岩石力学与工程学报,2004,23(7):1198-1202.
[3]卢君实,郭震,禹风林.辽宁煤矿采区地震勘探应用现状与前景[J].煤炭技术,2007,26(6):118-120.
[4]刘建胜,李树荣,王爱民.采用综合物探和钻探方法查明章丘矿山采空区[J].山东国土资源,2007,23(3):17-20.
[5]马丽,刘江,贺正东,等.地震勘探在采空区探测方面的应用[J].陕西煤炭,2008,27(2):90-92.
[6]宫凤强,李夕兵,董陇军,等.基于未确知测度理论的采空区危险性评价研究[J].岩石力学与工程学,2008,27(2):323-330.
[7]慎乃齐,杨建伟,郑惜平,等.基于神经网络的采空塌陷预测[J].煤田地质与勘探,2001,29(3):42-43.
[8]王忠昶.倾斜煤层开采离层空间发育特征的数值分析[J].广西大学学报:自然科学版,2010,35(4):678-683.
[9]张向东,张淑坤,杨奎清.高速公路与下伏采空区相互作用分析[J].科学技术与工程,2008,8(2):436-440.
[10]黄家然,张新滨,石亚龙,等.李家峡坝址区两岸高边坡监测设计[J].西北水电,1996(1):36-39.
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