钻孔多参量指标预测冲击地压危险性的试验研究Experimental study on prediction of rock burst risk by multi-parameter indexes of borehole
郝志勇,王率领,潘一山
HAO Zhiyong,WANG Shuailing,PAN Yishan
摘要(Abstract):
为准确预测预报冲击地压危险性,提出一种通过监测钻孔过程中钻杆推力、钻杆扭矩与钻屑量等钻孔多参量指标变化规律来预测冲击危险性的方法。利用自主研制的钻孔多参量一体化测试装置,在实验环境下对不同煤体应力状态下的多参量指标进行测试分析,发现钻杆扭矩与钻屑量均随着煤体应力的增大而增大,钻杆推力随着钻进时间的增加呈现先增大再减小,并出现波谷随后增大最后减小的规律。在相同钻机及钻具条件下,进行井下原位钻孔试验,结果表明:随着钻进深度增大,钻杆扭矩与钻屑量变化规律呈现较好一致性,在5m深度前均先增大随后减小;钻杆推力在1~4 m内呈上升趋势,在5 m处下降至波谷位置,随后推力值再次上升,最后呈稳定趋势。对此区域应力分布带情况进行划分,可确定应力峰值点大致在孔深5m处,并利用SPSS数据分析软件初步确定此试验点钻杆推力临界指标为7.5kN,钻杆扭矩临界指标为50.0N·m。研究结果可为冲击地压等煤矿动力灾害危险性的预测预报提供理论基础与工程指导。
In order to accurately predict the danger of rock burst, a method for predicting impact risk by monitoring the variation law of drilling parameters such as drill rod thrust, drill rod torque and drill cutting quantity during drilling was proposed. Using self-developed integrated testing device of multi-parameters of borehole, test and analysis of multi-parameters of different coal stress state under laboratory environment, it was found that the drilling rod torque and drilling cutting quantity increased with the increase of the stress of the coal body. As the drilling time increased, the drilling rod thrust firstly increased and then decreased, showed a trough of wave, and then increased and finally decreased. Under the same drilling and drilling tool conditions, in-situ experiment drilling was carried out in mine. The results indicate that with the increase of drilling depth, the change regulation of drilling rod torque and drilling cutting quantity showed a high degree of consistency, before 5 m depth, all of them first increased and then decreased. The thrust of drilling rod is on the rise in 1–4 m, down to the trough of wave at 5 m, then the thrust value rised again, and finally showed a steady trend. The distribution of stress in this area was divided, it could be determined that the stress peak point was approximately at 5 m deep in the hole. And the SPSS data analysis software was used to preliminarily determine that the critical thrust index of the drill rod of this test point was 7.5 kN, the critical index of drilling rod torque was 50 N·m. The research results can provide theoretical basis and engineering guidance for prediction of coal mine dynamic disaster risk such as rock burst.
关键词(KeyWords):
冲击地压;钻孔多参量指标;煤体应力;临界指标
rock burst;multi-parameter index of borehole;coal stress;critical index
基金项目(Foundation): 国家自然科学基金项目(51674133);; 国家重点研发计划项目(2017YFC0804208)~~
作者(Author):
郝志勇,王率领,潘一山
HAO Zhiyong,WANG Shuailing,PAN Yishan
参考文献(References):
- [1]潘一山.冲击地压发生和破坏过程研究[D].北京:清华大学,1999.
- [2]赵本钧.冲击地压及其防治[M].北京:煤炭工业出版社,1994.
- [3]何满潮,谢和平,彭苏萍,等.深部开采岩体力学研究[J].岩石力学与工程学报,2005,24(16):2803–2813.HE Manchao,XIE Heping,PENG Suping,et al. Study on rock mechanicsindeepminingengineering[J].ChineseJournalof Rock Mechanics and Engineering,2005,24(16):2803–2813.
- [4]胡克智,刘宝琛,马光,等.煤矿的冲击地压[J].科学通报,1996,11(9):430–432.HU Kezhi,LIU Baochen,MA Guang,et al. The rock burst in coal mine[J]. Chinese Science Bulletin,1996,11(9):430–432.
- [5]罗浩,潘一山,肖晓春,等.矿山动力灾害多参量危险性评价及分级预警[J].中国安全科学学报,2013,23(11):85–90.LUO Hao,PAN Yishan,XIAO Xiaochun,et al. Multi-parameter risk evaluation and graded early warning of mine dynamic disaster[J]. China Safety Science Journal,2013,23(11):85–90.
- [6]潘一山.煤与瓦斯突出、冲击地压复合动力灾害一体化研究[J].煤炭学报,2016,41(1):105–112.PAN Yishan. Integrated study on compound dynamic disaster of coal-gasoutburstandrockburst[J].JournalofChinaCoalSociety,2016,41(1):105–112.
- [7]刘晓斐,肖栋,邵学峰,等.矿井冲击危险电磁辐射连续监测及预测研究[J].煤田地质与勘探,2007,35(6):67–69.LIUXiaofei,XIAODong,SHAOXuefeng,etal.Electromagnetic radiation law of continuous monitoring and forecasting rock burst in coal mine[J]. Coal Geology&Exploration,2007,35(6):67–69.
- [8]郭延华,姜福兴,张常光.高地应力下圆形巷道临界冲击地压解析解[J].工程力学,2011,28(2):118–122.GUOYanhua,JIANGFuxing,ZHANGChangguang.Analytical solution for critical rockburst of a circular chamber subjected to high in-situ stress[J]. Engineering Mechanics,2011,28(2):118–122.
- [9]FUJIIY,ISHIJIMAY,DEGUCHIG.Predictionofcoalface rockbursts and microseismicity in deep longwall coal mining[J].International Journal of Rock Mechanics and Mining Sciences,1999,34(1):85–96.
- [10]朱丽媛,李忠华,徐连满.钻屑扭矩法测定煤体应力与煤体强度研究[J].岩土工程学报,2014,36(11):2096–2102.ZHU Liyuan,LI Zhonghua,XU Lianman. Measuring stress and strengthofcoalbydrillingcuttingtorquemethod[J].Chinese Journal of Geotechnical Engineering,2014,36(11):2096–2102.
- [11]潘一山,徐连满.钻屑温度法预测冲击地压的试验研究[J].岩土工程学报,2012,34(12):2228–2232.PAN Yishan,XU Lianman. Experimental investigation on temperatureofdrillingcuttingstopredictrockburst[J].Chinese Journal of Geotechnical Engineering,2012,34(12):2228–2232.
- [12]徐连满,李祁,潘一山,等.钻杆扭矩法预测冲击地压的研究[J].工程力学,2014,31(11):251–256.XU Lianman,LI Qi,PAN Yishan,et al. Study on forecasting rockburstofthedrillpipetorquemethod[J].EngineeringMechanics,2014,31(11):251–256.
- [13]陆振裕,窦林名,徐学锋,等.钻屑法探测巷道围岩应力及预测冲击地压危险新探究[J].煤炭工程,2011,43(1):72–74.LU Zhenyu,DOU Linming,XU Xuefeng,et al. New discovery ondrillingcuttingsmethodtodetectsurroundingrockstressof mineroadwayandpredictminepressurebumpingdangers[J].Coal Engineering,2011,43(1):72–74.
- [14]曲效成,姜福兴,于正兴,等.基于当量钻屑法的冲击地压监测预警技术研究及应用[J].岩石力学与工程学报,2011,30(11):2346–2351.QV Xiaocheng,JIANG Fuxing,YU Zhengxing,et al. Rockburst monitoring and precaution technology based on equivalent drilling research and its applications[J]. Chinese Journal of Geotechnical Engineering,2011,30(11):2346–2351.
- [15]王恩元,何学秋,刘贞堂,等.煤岩动力灾害电磁辐射监测仪及其应用[J].煤炭学报,2003,28(4):366–369.WANG Enyuan,HE Xueqiu,LIU Zhentang,et al. Electromagnetic radiation detector of coal or rock dynamic disasters and its application[J]. Journal of China Coal Society,2003,28(4):366–369.
- [16]吕进国,姜耀东,赵毅鑫,等.冲击地压层次化监测及其预警方法的研究与应用[J].煤炭学报,2013,38(7):1161–1167.LYU Jinguo,JIANG Yaodong,ZHAO Yixin,et al. Hierarchical monitoring for coal bumps and its study and application of early warning methods[J]. Journal of China Coal Society,2013,38(7):1161–1167.
- [17]陈峰,潘一山,李忠华,等.利用钻屑法对卸压钻孔措施效果的分析评价[J].岩土工程学报,2013,35(增刊2):266–270.CHENFeng,PANYishan,LIZhonghua,etal.Analysisand evaluationofeffectsofboreholepressurereliefmeasuresby drillingcuttingmethod[J].ChineseJournalofGeotechnicalEngineering,2013,35(S2):266–270.
- [18]张明杰,杨硕.松软煤层螺旋钻杆钻进中的吸钻卡钻力学机理[J].煤田地质与勘探,2015,43(5):121–124.ZHANG Mingjie,YANG Shuo. Mechanical mechanism of auger drillingrodstickinginsoftcoalseam[J].CoalGeology&Exploration,2015,43(5):121–124.
- [19]易俊,姜永东,鲜学福.应力场、温度场瓦斯渗流特性实验研究[J].中国矿业,2007,16(5):113–116.YI Jun,JIANG Yongdong,XIAN Xuefu. An experimental methane seepage in research on the characters of stress field and temperature field[J]. China Mining Magazine,2007,16(5):113–116.
- [20]韩昌良.沿空留巷围岩应力优化与结构稳定控制[D].徐州:中国矿业大学,2013.
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