模拟化爆试验模型体破坏区范围监测
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摘要
利用材料进入破坏状态时具有的剪胀特性及爆炸造成材料结构改变和弹性波波速会发生改变的特性,在模型体内设置应变砖,测量爆炸时材料的体积应变,并测量爆腔附近模型材料的波速。测试结果表明,在模型化爆试验中,可以得到与实际岩体爆炸情况下相似的破坏区,应用这两种方法监测模拟化爆试验模型体的破坏区是有效和合理的,可为进行相关的分析提供试验依据。
When material bearing explosive dynamics load is in failure state,it has the shear dilatancy behaviors,at the same time,the material structure and the elastic wave velocity are changed.The material volume strain and the velocity near explosive cavity are measured using strain gauge embedded in model body and acceleration sensor.Measuring results show that,in the model test,the similar failure rock zone area as reality under the explosion circumstance is obtained;the measuring methods are effective and reasonable,when it is used to monitor failure area in explosive model test and it can provide experimental basis for related analysis.
When material bearing explosive dynamics load is in failure state,it has the shear dilatancy behaviors,at the same time,the material structure and the elastic wave velocity are changed.The material volume strain and the velocity near explosive cavity are measured using strain gauge embedded in model body and acceleration sensor.Measuring results show that,in the model test,the similar failure rock zone area as reality under the explosion circumstance is obtained;the measuring methods are effective and reasonable,when it is used to monitor failure area in explosive model test and it can provide experimental basis for related analysis.
引文
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[7]严东晋,孙传怀.岩体中爆炸破坏区半径计算方法讨论[J].爆破,2010,27(2):29-31.YAN Dong-jin,SUN Chuan-huai.Discussion on method of calculating of radius of blast cracked zone in rock mass[J].Blasting,2010,27(2):29-31.
[8]陈士海,王明洋,赵跃堂,等.岩石爆破破坏界面上的应力时程研究[J].岩石力学与工程学报2003,22(11):1784-1788.CHEN Shi-hai,WANR Ming-yang,ZHAO Yue-tang,et al.Time-stress history on interface between cracked and uncracked zones under rock mass[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1784-1788.
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[10]王明洋,戚承志,钱七虎.岩体中爆炸与冲击下的破坏研究[J].辽宁工程技术大学学报(自然科学版),2001,20(4):385-389.WANG Ming-yang,QI Cheng-zhi,QIAN Qi-hu.Study on failure of rock under explosion and impact[J].Journal of Liaoning Technical University(Nature Science),2001,20(4):385-389.
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[12]沈俊,顾金才,张向阳.爆炸模型实验装置消波措施及应用[J].防护工程,2010,32(6):1-6.SHEN Jun,GU Jin-cai,ZHANG Xiang-yang.A wave absorber for the explosion model experiment facility and its application[J].Protective Engineering,2010,32(6):1-6.
[2]许翰才.防护结构设计[M].南京:中国人民解放军空军工程学院,1984.
[3]黄承贤.土岩爆破中岩体和坑道爆破破坏分区的试验研究[J].岩土力学,1986,7(1):36-45.HUANG Cheng-xian.Experimental study of failure zone in soil and rock black[J].Rock and Soil Mechanics,1986,7(1):36-45.
[4]王在晖,杨英,葛涛.岩体中封闭爆炸破碎区尺寸参数的近似计算方法[J].解放军理工大学学报(自然科学版),2006,7(5):454-457.WANG Zai-hui,YANG Ying,GE Tao.Analysis of crush zone size in rock mass under explosion load[J].Journal of PLA University of Science and Technology.2006,7(5):454-457.
[5]逄焕东,陈士海.弹性介质中爆破地震波传播的分区变化规律研究[J].振动与冲击,2009,8(3):105-107.PANG Huang-dong,CHEN Shi-hai.Elastic medium blasting seismic waves propagation regularity research[J].Journal of Vibration and Shock,2009,8(3):105-107.
[6]陈剑杰,孙钧,林俊德,等.强爆炸应力波作用下岩石地下洞室的破坏现象学[J].解放军理工大学学报(自然科学版),2007,8(6):582-588.CHEN Jian-jie,SUN Jun,LIN Jun-de,et al.Failure of rock openings under intensive explosion stress wave[J].Journal of PLA University of Science and Technology,2007,8(6):582-588.
[7]严东晋,孙传怀.岩体中爆炸破坏区半径计算方法讨论[J].爆破,2010,27(2):29-31.YAN Dong-jin,SUN Chuan-huai.Discussion on method of calculating of radius of blast cracked zone in rock mass[J].Blasting,2010,27(2):29-31.
[8]陈士海,王明洋,赵跃堂,等.岩石爆破破坏界面上的应力时程研究[J].岩石力学与工程学报2003,22(11):1784-1788.CHEN Shi-hai,WANR Ming-yang,ZHAO Yue-tang,et al.Time-stress history on interface between cracked and uncracked zones under rock mass[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1784-1788.
[9]钱七虎.岩石爆炸动力学的若干进展[J].岩石力学与工程学报,2009,28(10):1945-1968.QIAN Qi-hu.Some advances in rock blasting dynamics[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(10):1945-1968.
[10]王明洋,戚承志,钱七虎.岩体中爆炸与冲击下的破坏研究[J].辽宁工程技术大学学报(自然科学版),2001,20(4):385-389.WANG Ming-yang,QI Cheng-zhi,QIAN Qi-hu.Study on failure of rock under explosion and impact[J].Journal of Liaoning Technical University(Nature Science),2001,20(4):385-389.
[11]柴华友,吴慧明.弹性介质中表面波理论及其在岩土工程中应用[M].北京,科学出版社,2008.
[12]沈俊,顾金才,张向阳.爆炸模型实验装置消波措施及应用[J].防护工程,2010,32(6):1-6.SHEN Jun,GU Jin-cai,ZHANG Xiang-yang.A wave absorber for the explosion model experiment facility and its application[J].Protective Engineering,2010,32(6):1-6.
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