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A Comprehensive Vibration Reduction Method for Blasting of Tunnels Undergoing Culturally Preserved Buildings

A technology for tunnels and buildings, applied in tunnels, earthwork drilling, mining equipment, etc., can solve problems such as failure to meet control requirements, achieve the effect of reducing the throwing distance, reducing the interference of differential blasting, and increasing the air surface

Active Publication Date: 2015-11-25
CHINA TIESIJU CIVIL ENG GRP CO LTD
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Problems solved by technology

[0005] In engineering blasting, there are many single shock-absorbing measures, but in the case of using a single shock-absorbing measure, when the distance between the protected point and the blasting area is 20m, the blasting vibration velocity of the measuring point is 2-5cm / s, which is Obviously far from meeting the control requirements of 0.5cm / s

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  • A Comprehensive Vibration Reduction Method for Blasting of Tunnels Undergoing Culturally Preserved Buildings
  • A Comprehensive Vibration Reduction Method for Blasting of Tunnels Undergoing Culturally Preserved Buildings
  • A Comprehensive Vibration Reduction Method for Blasting of Tunnels Undergoing Culturally Preserved Buildings

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Embodiment Construction

[0034] see figure 1 In the present embodiment, the blasting comprehensive damping method for tunnels passing through culturally preserved buildings is as follows: for underground excavated subway interval tunnels passing through ancient culturally preserved buildings, the three-step method of drilling and blasting excavation is adopted, and the upper steps 11 are formed successively along the longitudinal excavation of the tunnel. , middle step 12 and lower step 13. figure 1 V shown in is the height difference between the foundation of the protected building and the tunnel vault, and H is the minimum distance between the foundation of the protected building and the tunnel excavation contour line. In the present embodiment, the value of V is 1.5 meters , H value is 16.3 meters. In this embodiment, the excavation method of three steps is adopted, and the longitudinal depth between the three steps is widened. After the blasting and excavation of the upper step is completed, the ...

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Abstract

The invention discloses a comprehensive damping method for blasting of a tunnel passing through a heritage conservation building. The comprehensive damping method for the blasting of the tunnel passing through the heritage conservation building is characterized in that for an underground excavated metro tunnel passing through the heritage conservation building, a three-step method is used to drill and excavate, longitudinal excavation is performed on the tunnel to sequentially form into an upper step, a middle step and a lower step. The comprehensive damping method for the blasting of the tunnel passing through the heritage conservation building has the advantages of reducing blasting total explosive amount due to drilling excavation through the three-step method, branch excavation and emphasized control of upper stage blasting excavation, guaranteeing blasting vibration velocity of a construction section passing the heritage conservation building satisfying relevant requirements and reliably protecting the heritage conservation building from not being damaged.

Description

technical field [0001] The invention relates to a blasting control shock absorption method, more specifically to the shock absorption control method adopted in the blasting of tunnels passing through cultural relics protection buildings, in order to reduce the damage caused by the harmful effect of blasting vibration to ground cultural relics protection buildings. Background technique [0002] With the vigorous development of my country's urban subways, more and more subway projects have been constructed through the bustling urban areas by using the drill and blast method, and some cities still have a large number of national-level cultural relics protection buildings. The harmful effects of vibration generated by the blasting may endanger the surrounding buildings, especially the ancient cultural relics protection buildings. How to effectively control the harmful effects of blasting vibration and ensure the safety and smooth construction of cultural relics protected buildin...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00
Inventor 彭小兵隗志远徐华生石华峰余高飞柯宇庆陈文尹李拥军吴锡君
Owner CHINA TIESIJU CIVIL ENG GRP CO LTD
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