Supporting method for blasting preventive facility of deep-foundation-pit lithosphere

A technology for protective facilities and rock layers, which is applied in the field of blasting protection of underground diaphragm walls and rock layers, and can solve problems such as failure of protective measures to meet safety requirements, loss of protective effect, and protection being washed up.

Active Publication Date: 2013-12-04
CHINA MCC20 GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of construction in our country, there are more and more deep foundation pit projects, and some deep foundation pits in rock layers appear. Blasting construction, the gravel at the bottom of the foundation pit will splash during blasting construction, which will bring serious hidden dangers to the safety of the engineering environment
[0003] At present, in order to prevent the potential safety hazards caused by foundation pit blasting to the environment, measures such as protective nets and bamboo nets are used, but the rock layer blasting is all hard gravel, and the existing protective measures cannot meet the safety requirements
It has been reported that the protection quilt made of waste tires and covered on the blasting surface can play a certain protective role, but when the rock layer is blasted, the air waves caused by the explosion and the flying gravel can easily wash away the protection and lose the protection effect.

Method used

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  • Supporting method for blasting preventive facility of deep-foundation-pit lithosphere

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Experimental program
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Effect test

Embodiment Construction

[0014] like figure 1 Shown, a kind of deep foundation pit rock formation blasting protective facility supporting method of the present invention, it comprises the blasting quilt 1 that waste tire is made, and described supporting method comprises:

[0015] Step 1, making a blasting quilt 1, covering the blasting charge hole 6 with a blasting quilt made of discarded rubber tires;

[0016] Step 2, the blasting quilt is anchored into the rock layer 5 with extended expansion bolts 2 around the blasting quilt, and the expansion bolts 2 and the blasting quilt 1 are connected with elastic stays 3 .

[0017] According to the support method for protection facilities for deep foundation pit rock layer blasting, the blasting is cut into strips by waste tires 5 and then overlapped and woven into strips, and the overlapping parts are fixedly connected by bolts 4 .

[0018] In the method for supporting the blasting protection facilities of the deep foundation pit, the quantity of the expan...

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Abstract

The invention relates to deep foundation pit blasting, in particular to blasting prevention of an underground diaphragm wall lithosphere, and discloses a supporting method for a blasting preventive facility of a deep-foundation-pit lithosphere. The supporting method includes step 1, making the blasting cover made of the junked tires and covering the same on a blasting explosive hole, and step 2, anchoring the periphery of the blasting cover into the lithosphere through lengthened expansion bolts, wherein the expansion bolts and the blasting cover are connected through elastic stays. Through buffer action of the elastic blasting cover and the elastic stays, detritus and impact both caused by blasting are reduced, and a protection function for construction environment is realized.

Description

technical field [0001] The invention relates to deep foundation pit blasting, and in particular relates to blasting protection for underground diaphragm wall rock layers. Background technique [0002] With the development of construction in our country, there are more and more deep foundation pit projects, and some deep foundation pits in rock layers appear. During blasting construction, the gravel at the bottom of the foundation pit will splash during blasting construction, which will bring serious hidden dangers to the safety of the engineering environment. [0003] At present, in order to prevent the safety hazards caused by foundation pit blasting to the environment, measures such as protective nets and bamboo nets are used, but the rock layer blasting is all hard gravel, and the existing protective measures cannot meet the safety requirements. It has been reported that the protective quilt made of waste tires and covered on the blasting surface can play a certain prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D5/00
Inventor 杨前
Owner CHINA MCC20 GRP CORP
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