干冰致裂破岩振动与噪声分布规律  

Distribution law of vibration and noise generated by the rock breaking of dry ice fracturing

作　　者：陶科宇 张奇[1] 郑玉龙[1] TAO Ke-yu;ZHANG Qi;ZHENG Yu-long(Petro China Southwest Oil&Gas Field Company Northeast Sichuan Gas Mine,Dazhou 635000,Sichuan,China)

机构地区：[1]中国石油西南油气田公司川东北气矿,四川达州635000

出　　处：《工程爆破》2022年第5期99-105,共7页Engineering Blasting

基　　金：中央高校基本科研业务费专项资金资助项目(2652019068)。

摘　　要：为探讨干冰相变膨胀爆破致裂岩石过程中的振动及噪声分布规律,利用专业振动测试系统对不同布孔结构下的干冰破岩过程产生的振动及噪声进行实地监测,分析了干冰破岩产生的振动场及噪声的分布规律。结果表明,干冰致裂破岩过程中振动迅速衰减的位置在距振源6~10 m之间,产生的强振动持续时间较短,安全系数较高。干冰致裂破岩过程产生的噪声较小,噪声持续时间十分短,频率集中于0~50 Hz之间,且振幅不大,环境影响较小。In order to explore the distribution law of vibration and noise in the rock breaking process caused by expansion blasting of dry ice phase change,the professional vibration test system was used to monitor the vibration and noise generated by the rock breaking process of dry ice fracturing under different hole structures layout,and the distribution law of vibration field and noise generated by the rock breaking of dry ice fracturing was analyzed.The results show that the position of rapid vibration attenuation in the rock breaking process of dry ice fracturing was between 6 m and 10 m away from the source,and the duration of strong vibration was short and the safety factor was high.The noise generated by the rock breaking process of dry ice fracturing was low,the duration of noise was very short,the frequency was concentrated in the range of 0-50 Hz,and the amplitude was not large,therefore its environmental influence was small.

关 键 词：干冰致裂 破岩技术 振动 噪声 衰减 

分 类 号：TD235[矿业工程—矿井建设]