Tunnel blasting vibration test system and method based on wireless communications

Abstract

The invention discloses a tunnel blasting vibration test system and method based on wireless communications; the system comprises a plurality of wireless network vibration meters, a triaxial vibration velocity sensor, a plurality of wireless communication stations and a data center; the wireless network vibration meters are used to acquire vibration waveform in a tunnel and convert the waveform into a digital signal that is transmitted to the data center for storage through the wireless communication stations; the triaxial vibration speed sensor receives a vibration signal to obtain vibrational velocity components in three coordinate axes, calculates resultant velocity, and reflects the magnitude of vibrational strength; the wireless communication stations are distributed in the tunnel in broadcast distribution mode and are connected through a wireless network; the data center receives monitoring data, analyzes vibration waveform, judges whether the vibrational velocity exceeds a preset value or not, and gives an alarm if yes. The tunnel blasting vibration test system and method based on wireless communications allow related personnel to, without direct contact with a complex dangerous surrounding rock site, acquire blasting vibration information safely outside the tunnel and provide feedback and guidance in real time for field construction.

Description

technical field [0001] The invention relates to a tunnel blasting vibration test system and method based on wireless communication. Background technique [0002] Blasting is the main construction method of tunnel excavation, and it is widely used in tunnel excavation, slope improvement, building demolition, blasting embankment and other fields. The hazards of engineering blasting are mainly the vibration caused by blasting. With the advancement of urbanization in my country, there are many urban infrastructures and residential areas around many engineering blasting points. If the impact of blasting vibration cannot be reasonably evaluated, it is very likely Cause cracking and damage to adjacent buildings, and even cause loss of personnel and property. Compared with blasting hazards such as flying stones, shock waves, and dust, blasting vibration hazards have the characteristics of a large range of influence and are difficult to control. When engineering blasting produces st...

AI Technical Summary

Problems solved by technology

The construction environment of the tunnel site is poor, the space is limited, and it is impossible to install a bulky computer system, and embedded systems such as single-chip computers cannot handle complex multi-information

Moreover, the transmission distance of the usual data transmission system is limited, and it is still a problem to be solved to break through the space limitation and transmit the monitoring data to the public network server data center outside the tunnel in a timely manner.

[0005] The general vibration monitoring system for tunnel blasting can only collect data on site, and transmit the data to the public network server data center for analysis and processing through wired transmission, etc., which cannot realize real-time processing and analysis of data transmission. There are great limitations in

The space for the layout of blasting vibration monitoring instruments on the tunnel site is limited and it is not allowed to lay too long wired cables. Generally, only single-chip microprocessors and short cables can be used, which makes it difficult to realize complex fusion processing and analysis operations of complex and multivariate information. and long-distance data transmission

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