Safety evaluation method and system of blasting vibration based on energy input

A blasting vibration and safety evaluation technology, applied in blasting and other fields, can solve problems such as single evaluation index, misjudgment and missed judgment of blasting vibration hazards, insufficient signal processing methods, etc., to achieve the effect of avoiding misjudgment and accurate evaluation

Inactive Publication Date: 2011-06-01
ZHEJIANG UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the existing problems in the existing blasting vibration monitoring and blasting vibration safety evaluation that the evaluatio

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  • Safety evaluation method and system of blasting vibration based on energy input
  • Safety evaluation method and system of blasting vibration based on energy input
  • Safety evaluation method and system of blasting vibration based on energy input

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Embodiment approach

[0065] Such as figure 1 As shown, it is a block diagram of the blasting vibration test system provided by the present invention, including one or more blasting vibration signal acquisition instruments, one or more three-component vibration velocity sensors, and a blasting vibration safety evaluation module. The blasting vibration signal acquisition instrument, the three-component vibration velocity sensor and the blasting vibration safety evaluation module are connected by bus.

[0066] Such as figure 2 Shown is the blasting vibration safety evaluation module provided by the present invention.

[0067] The system for realizing the foregoing method in the present invention includes at least one three-component vibration velocity sensor and a blasting vibration signal acquisition instrument electrically connected thereto, and the computer system also includes a blasting vibration safety evaluation module; the blasting vibration safety evaluation module includes a main control...

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Abstract

The invention relates to the field of safety of blasting vibration and aims to provide a safety evaluation method and system of blasting vibration based on energy input. The system comprises a blasting vibration safety evaluation module built-in a computer system. The method comprises the steps of: performing empirical mode decomposition for a signal of blasting vibration, extracting a function component of natural mode of vibration of a blasting vibration signal, performing Hilbert conversion for the function of natural mode of vibration of the blasting vibration signal and calculating the Hilbert instantaneous energy value of the signal; integrating the Hilbert instantaneous energy value and obtaining a total input energy TIE value; comparing the total input energy TIE value as a safety evaluation index of blasting vibration with a critical TIE index of a protected object in a safety evaluation index library module of blasting vibration to obtain the safety indication information. By using the TIE as the safety evaluation index of blasting vibration, the invention can perform more explicit and concise quantificational description for factors such as basic frequency, duration and the like and evaluate the influence of the blasting vibration more accurately, thereby avoiding the erroneous judgment of blasting vibration damage.

Description

technical field [0001] The invention relates to the field of blasting vibration safety, in particular to the testing, recording, analysis and pre-warning of blasting vibration signals, in particular to a blasting vibration safety evaluation method and system based on input energy. Background technique [0002] Blasting is an important construction method in civil engineering, water conservancy, transportation, mining and other industries. It is widely used in earthwork excavation, tunnel excavation, slope improvement, building demolition, blasting embankment and other fields. On the other hand, the secondary hazards of engineering blasting are mainly the environmental vibration caused by blasting. Especially with the advancement of urbanization in my country, there are many urban infrastructures and residential areas around many engineering blasting sites. Evaluating the impact of blasting vibration is likely to cause cracking and damage to adjacent buildings, and even cause ...

Claims

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Application Information

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IPC IPC(8): F42D1/00
Inventor 王振宇陈银鲁李富强刘国华
Owner ZHEJIANG UNIV
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