Vibration safety monitoring system and monitoring method for support blasting demolition in foundation pit

A technology for safety monitoring and foundation pit, which is applied to underground structures and foundation fields, can solve problems such as damage to foundation pit structures, and achieve the effects of low cost, good environmental adaptability, and reduced damage.

Active Publication Date: 2011-12-28
SHANGHAI TUNNEL ENG CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, the use of vibration deformation to monitor the safety of buildings has been reported, but there is no research on the damage effect of the foundation pit structure

Method used

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  • Vibration safety monitoring system and monitoring method for support blasting demolition in foundation pit
  • Vibration safety monitoring system and monitoring method for support blasting demolition in foundation pit
  • Vibration safety monitoring system and monitoring method for support blasting demolition in foundation pit

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Example Embodiment

[0027] The specific embodiments are described in detail below in conjunction with the accompanying drawings:

[0028] figure 1 It is a diagram of the vibration safety monitoring system in the foundation pit. In the figure, a support blasting demolition vibration safety monitoring system in the foundation pit includes a number of vibration sensors 1 arranged in the foundation pit to support a number of measuring points, a data transmission line 2, a data acquisition instrument 3, a data bus 4, and a computer processing system 5. Each vibration sensor 1 is connected with a data acquisition instrument 3 through a data transmission line 2 , and the data acquisition instrument 3 is connected with a computer processing system 5 through a data bus 4 . In this system, the vibration sensor 1 and the data acquisition instrument 3 are used for collecting vibration data on site, and the computer processing system 5 is used for post-processing of the data. The vibration sensor and data a...

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Abstract

The invention relates to a vibration safety monitoring system and monitoring method for support blasting demolition in a foundation pit. Including: It is composed of several vibration sensors arranged in the foundation pit to support several measuring points, data transmission line, data acquisition instrument, data bus, and computer processing system. The vibration sensors of each measuring point are connected with the data acquisition instrument through the data transmission line , the data acquisition instrument is connected with the computer processing system through the data bus. The invention can judge the damage of the foundation pit structure by the support blasting according to the vibration of the monitoring point in the foundation pit. Compared with the traditional damage detection monitoring method, it can quickly and easily judge the damage to the foundation pit body structure by each support blasting, so as to evaluate each To improve the secondary blasting effect, modify the blasting parameters to reduce the damage to the foundation pit caused by prop blasting. The method has the characteristics of quickness, simplicity, low cost and good environmental adaptability, is suitable for monitoring the safety of foundation pits for support blasting in various foundation pits, and has great significance for the safety construction control of support blasting in foundation pits.

Description

Technical field: [0001] The invention relates to a foundation and an underground structure, and more particularly to a vibration safety monitoring system and a monitoring method for supporting blasting demolition in a foundation pit. Background technique: [0002] Temporary support needs to be established during the construction of the foundation pit, and the temporary support structure is determined according to the structure of the foundation pit. After the foundation pit is built, the temporary support needs to be dismantled. Common dismantling methods include blasting dismantling, mechanical dismantling, manual dismantling, and hoisting dismantling. Blasting demolition has the characteristics of short construction period, good effect and low cost, and is widely used. In addition, with the development of urban foundation pit technology, large-scale foundation pits continue to emerge, and the accompanying temporary support structures are more complex and huge, and blastin...

Claims

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Application Information

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IPC IPC(8): E02D33/00G01H17/00
Inventor 王祺李福清马宏昊沈庞勇蒋耀港廖学燕王臻华金仲康
Owner SHANGHAI TUNNEL ENG CO LTD
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