【摘要】 通过管道震动加速度动态实时监测和管道本体变形实时监测相结合的方法,对受爆破影响区域的管道进行监测,并通过数据处理和分析,得到了爆破发生时管道的最大震动加速度和速度,以及爆破发生时刻和爆破前后的管道本体实时应变。结果表明:爆破时,垂直于管道的水平方向冲击最大,但与之相关的最大震动速度远远小于安全指标,平行于管道的水平方向和垂直于管道方向的加速度测量值较小。爆破对管道的变形有一定影响,但这种影响极其微弱,对管体不会产生破坏性影响。综合管道动态监测结果和管道本体应变监测结果表明,在与管道垂直距离200 m外及相当的爆破能量下的爆破对管道本体的影响极其微弱,管道处于安全状态。更多还原

【Abstract】 The pipelines in areas affected by blasting are monitored by the combination of dynamic real-time monitoring of the pipeline vibration acceleration and the real-time monitoring of the pipeline body distortion.Data processing and analysis are conducted to derive the maximum vibration acceleration and velocity of pipeline when the blasting occurs and the real-time strain of pipeline body at the time of and before/after blasting.The results show that when the blasting occurs,the impact in horizontal direction perpendicular to the pipeline is the largest,while the maximum vibration speed is far less than the safety index;the observed values of acceleration in horizontal and vertical directions parallel to the pipeline is small.Blasting has certain but extremely weak effects on the deformation of the pipeline,but such deformation will not be destructive.The synthesis of dynamic monitoring results and strain monitoring results indicates that the blasting 200 m away vertically from the pipeline and at equivalent energy induces extremely weak effects on the pipeline,so the pipeline is safe.更多还原