冲击地压的应力增量预报方法
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摘要
采用覆岩空间结构运动理论预测了兖州煤业股份有限公司南屯煤矿9303孤岛放顶煤工作面的岩层运动规律,确定了冲击危险区和危险程度,并对冲击危险区域进行了卸压预处理。在此基础上,在危险区采用"钻孔应力增量、钻屑量和钻屑过程中的动力现象为主要指标"的冲击地压应力增量预报方法,对工作面可能发生冲击地压的位置进行了准确的预测预报。由于提前做好了预先卸压、监测检验和防护,在预测区域内发生2.6级矿震时,成功避免了矿震诱发的冲击地压灾害,实现了"有震无灾"的控制目标。
Based on the analysis of strata spatial structure movement,not only forecasted the discipline of strata motion in 9303LW,but also presented the predicting results of potential zones and risk level of rock burst in 9303LW. 9303LW is a top coal mining longwall face of Nantun Coal Mine,Yanzhou Coal Mining Group. The predicting results of potential zones of rock burst is pre-unloading. On this basis,stress increment method that main contains the borehole stress increment,value of drilling cuttings weight and dynamic phenomena which happens in the drilling method process can forecast rockburst of the working face accurate. Owing to pre-stress-relief,monitoring inspection and protection in advance,when 2. 6 grade of mine quake happeded,sucessfully avoid from coal out burst induced by mine quake disaster,achieve the aims of avoiding dynamic disaster.
Based on the analysis of strata spatial structure movement,not only forecasted the discipline of strata motion in 9303LW,but also presented the predicting results of potential zones and risk level of rock burst in 9303LW. 9303LW is a top coal mining longwall face of Nantun Coal Mine,Yanzhou Coal Mining Group. The predicting results of potential zones of rock burst is pre-unloading. On this basis,stress increment method that main contains the borehole stress increment,value of drilling cuttings weight and dynamic phenomena which happens in the drilling method process can forecast rockburst of the working face accurate. Owing to pre-stress-relief,monitoring inspection and protection in advance,when 2. 6 grade of mine quake happeded,sucessfully avoid from coal out burst induced by mine quake disaster,achieve the aims of avoiding dynamic disaster.
引文
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[11]蒋金泉,张开智.综放开采矿震的成因及防治对策[J].岩石力学与工程学报,2006,25(S1):3276-3282.Jiang Jinquan,Zhang Kaizhi.Cause and control method of mine earthquake in fully mechanized top coal caving mining[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(S1):32763282.
[12]谭云亮,赵同彬,颜伟.岩层破坏突变前兆异常识别方法[J].岩土力学,2003,24(S):335-339.Tan Yunliang,Zhao Tongbin,Yan Wei.Identification method for abnormal omen caused by strata catastrophe[J].Rock and Soil Mechanics,2003,24(S):335339.
[13]王路军.突出预测指标钻屑量的实验研究[J].煤矿安全,2008(9):1-3.Wang Lujun.Test of drilling cutting quantity of outburst prediction index[J].Safety in Coal Mines,2008(9):13.
[14]赵阳升,梁纯升,刘成丹.钻屑法测量围岩压力的探索[J].岩土工程学报,1987,9(2):106-112.
[2]章梦涛.我国冲击地压预测和防治[J].辽宁工程技术大学学报(自然科学版),2001,20(4):434-435.Zhang Mengtao.Forecast and prevention of rockburst in China[J].Journal of Liaoning Technical University(Natural Science Edition),2001,20(4):434435.
[3]齐庆新,陈尚本,王怀新,等.冲击地压、岩爆、矿震的关系及其数值模拟研究[J].岩石力学与工程学报,2003,22(11):18521858.Qi Qingxin,Chen Shangben,Wang Huaixin,et al.Study on the rela-tions among coal bump,rock burst and mining tremor withnumerical simulation[J].Chinese Journal of Rock Mechanics and Engineer-ing,2003,22(11):18521858.
[4]齐庆新,王永秀,毛德兵.非坚硬顶板条件下高强度开采采动诱发冲击地压机制初探[J].岩石力学与工程学报,2005,24(S1):50025006.Qi Qingxin,Wang Yongxiu,Mao Debing.Study on mechanism of rock burst induced by high strength mining withcondition of non-hard roof[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(S1):50025006.
[5]姜福兴,杨淑华,Xun Luo.微地震监测揭示的采场围岩空间破裂形态[J].煤炭学报,2003,28(4):357-360.Jiang Fuxing,Yang Shuhua,Xun Luo.Spatial fracturing progresses of surrounding rock masses in longwall face monitored by microseismic monitoring techniques[J].Journal of China Coal Society,2003,28(4):357-360.
[6]姜福兴,张兴民,杨淑华.长壁采场覆岩空间结构探讨[J].岩石力学与工程学报,2006,25(5):975-984.Jiang Fuxing,Zhang Xingmin,Yang Shuhua.Discussion on overlying strata spatial structures of longwall in coal mine[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(5):975984.
[7]杨小林,王树仁.岩石爆破损伤断裂的细观机制[J].爆炸与冲击,2000,20(3):247-252.Yang Xiaolin,Wang Shuren.Meso mechanism of damage and frac-ture on rock blasting[J].Explosion and Shock Waves,2000,20(3):247-252.
[8]闫长斌,徐国元,李夕兵.爆破震动对采空区稳定性影响的FLAC3D分析[J].岩石力学与工程学报,2005,24(16):2894-2899.Yan Changbin,Xu Guoyuan,Li Xibing.Stability analysis of mined-out areas influenced by blasting vibration with FLAC3D[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(16):2894-2899.
[9]齐庆新,雷毅,李宏艳,等.深孔断顶爆破防治冲击地压的理论与实践[J].岩石力学与工程学报,2007,26(S1):3521-3527.Qi Qingxin,Lei Yi,Li Hongyan,et al.Theory and application of pre-vention of rock burst by break-tip blast in deep hole[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(S1):3521-3527.
[10]潘一山,李忠华,章梦涛.我国冲击地压分布、类型、机理及防治研究[J].岩石力学与工程学报,2003,22(11):1844-1851.Pan Yishan,Li Zhonghua,Zhang Mengtao.Distribution,type,mech-anism and prevention of rockbrust in China[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):18441851.
[11]蒋金泉,张开智.综放开采矿震的成因及防治对策[J].岩石力学与工程学报,2006,25(S1):3276-3282.Jiang Jinquan,Zhang Kaizhi.Cause and control method of mine earthquake in fully mechanized top coal caving mining[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(S1):32763282.
[12]谭云亮,赵同彬,颜伟.岩层破坏突变前兆异常识别方法[J].岩土力学,2003,24(S):335-339.Tan Yunliang,Zhao Tongbin,Yan Wei.Identification method for abnormal omen caused by strata catastrophe[J].Rock and Soil Mechanics,2003,24(S):335339.
[13]王路军.突出预测指标钻屑量的实验研究[J].煤矿安全,2008(9):1-3.Wang Lujun.Test of drilling cutting quantity of outburst prediction index[J].Safety in Coal Mines,2008(9):13.
[14]赵阳升,梁纯升,刘成丹.钻屑法测量围岩压力的探索[J].岩土工程学报,1987,9(2):106-112.
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