Blasting vibration measurement in the frozen rock of the underground mine vertical shaft

Artificial freezing method is the main means of shaft sinking in unsteady thick alluvium of underground mine, and drilling and blasting method for frozen rock and soil is the valid means to improve the sinking speed. In order to guarantee construction security and improve the sinking speed, blasting vibration test is necessary. Topbox vibration monitor is used and measure points were fixed on the location biggish deflective freezing pipes in the on-site test. Based on the test wave and data analysis using the analysis software, the relationship between radial vibration velocity, vertical vibration velocity and equivalent charge, equivalent horizontal distance, elevation discrepancy are established respectively. According to the test result, it can guide the blasting operation safety.