CN215003269U

CN215003269U - Device for bridge pile hole digging blasting safety protection

Info

Publication number: CN215003269U
Application number: CN202121227855.XU
Authority: CN
Inventors: 贾思源
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-12-03
Anticipated expiration: 2031-06-02

Abstract

The utility model relates to the field of constructional engineering, and discloses a device for bridge pile hole digging blasting safety protection, which comprises a first protective net, wherein the first protective net covers on pile hole opening retaining wall concrete; a protection mechanism is also suspended in the position, close to the hole opening, in the pile hole through a steel wire rope, one end of the steel wire rope is fixed with the protection mechanism, and the other end of the steel wire rope is tied on a first protection net; and a weight is arranged above the first protective net and is arranged around the edge of the hole. The utility model discloses a protection of protection machanism and first protection network to pile foundation blasting flyrock, protection machanism can effectively arrange to reduce and weaken and produce high-pressure gas, shock wave in the well after the explosive explosion directly to covering protective measures and directly strike, when reducing the flyrock departure, has also reduced the impact and the damage of flyrock to first protection network to guarantee the effect of the protective measures of first protection network.

Description

Device for bridge pile hole digging blasting safety protection

Technical Field

The utility model relates to a building engineering field, concretely relates to a device that is used for bridge pile hole digging blasting safety protection.

Background

At present, the manual hole digging and pile forming technology is widely applied to bridge construction engineering, and with the continuous acceleration of urbanization construction pace, pile foundations are close to civil houses and protective facilities are increased, the construction environment tends to be complex, the safety needs to be strictly controlled, and various accidents are prevented. The manual hole digging pile forming is to dig a pile hole and put a reinforcement cage into the pile hole by a method of manually digging a vertical shaft, and then pour foundation pile concrete to form a pile foundation. The manual hole digging is characterized by no limitation of mechanical equipment and construction scene arrangement, small disturbance and capability of organizing a plurality of construction teams for simultaneous construction according to the construction period and the construction requirements. When the manual pile digging hole penetrates through the boulder or is embedded into a rock stratum and needs blasting operation, the flying stones are easy to be too far, and safety accidents are caused; the pile foundation implosion impact force and the flyrock are sprayed out through the pile foundation well mouth, so that protection measures need to be added at the pile foundation well mouth for ensuring construction safety, and the damage to nearby civil houses, equipment or personnel caused by blasting operation is avoided.

The existing pile foundation blasting protection is only realized by simply covering a rigid protective net through an orifice, the protection effect is poor, flyrock directly impacts the orifice protective net easily to damage the orifice protective net to cause out of control, the orifice protective net cannot protect the orifice protective wall concrete, and the construction cost input is increased.

SUMMERY OF THE UTILITY MODEL

Based on above problem, the utility model provides a device for bridge pile hole digging blasting safety protection adopts protection machanism and first protection network to the protection of pile foundation blasting flyrock, and protection machanism can effectively arrange to reduce and weaken and produce high-pressure gas, shock wave in the well after the explosive explosion directly impact to covering safeguard measure, when reducing the flyrock departure, has also reduced the impact and the damage of flyrock to first protection network to guarantee the safeguard measure's of first protection network effect.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a device for bridge pile hole digging blasting safety protection comprises a first protective net, wherein the first protective net covers concrete of a pile hole opening protecting wall; a protection mechanism is also suspended in the position, close to the hole opening, in the pile hole through a steel wire rope, one end of the steel wire rope is fixed with the protection mechanism, and the other end of the steel wire rope is tied on a first protection net; a weight is arranged above the first protective net for pressing and is arranged around the edge of the orifice.

Further, the protection mechanism is a waste rubber tire.

Further, the weight is a bag filled with soil, sand or crushed gravel.

Further, a second protective net is laid between the first protective net and the heavy object; the mesh size of the second protective screening is smaller than that of the first protective screening.

Furthermore, the first protective net is a grid welded by phi 20 twisted steel bars, and the specification is 0.3m multiplied by 0.3 m; the second protective net is a phi 10 steel wire rope net with the specification of 0.02 multiplied by 0.02 m.

Furthermore, a cushion block is arranged between the upper surface of the retaining wall concrete and the first protective net.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a protection of protection machanism and first protection network to pile foundation blasting flyrock, protection machanism can effectively arrange to reduce and weaken and produce high-pressure gas, shock wave in the well after the explosive explosion directly to covering protective measures and directly strike, when reducing the flyrock departure, has also reduced the impact and the damage of flyrock to first protection network to guarantee the effect of the protective measures of first protection network.

Drawings

FIG. 1 is a schematic structural diagram of a device for blasting safety protection of bridge pile hole digging in the embodiment;

FIG. 2 is an enlarged schematic view of detail A of FIG. 1;

FIG. 3 is a top view structural diagram of a device for bridge pile hole digging blasting safety protection in the embodiment

Wherein: 1. a first protection net; 2. pile holes; 3. wall protection concrete; 4. a wire rope; 5. a protection mechanism; 6. a weight; 7. a second protective net; 8. and a cushion block.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example (b):

referring to fig. 1-3, a device for bridge pile hole digging blasting safety protection comprises a first protective net 1, wherein the first protective net 1 covers on a pile hole 2 orifice retaining wall concrete 3; a protection mechanism 5 is also suspended in the pile hole 2 at a position close to the hole opening through a steel wire rope 4, one end of the steel wire rope 4 is fixed with the protection mechanism 5, and the other end of the steel wire rope 4 is tied on the first protective net 1; a weight 6 is arranged above the first protection net 1, and the weight 6 is arranged around the edge of the opening.

In the embodiment, the near-body protection covering of the opening of the pile hole 2 of the manual hole digging is adopted, namely, the first protective net 1 is covered on the first layer of the well opening, a waste rubber tire is hung in the well by a thin steel wire rope 4, the first protective net 1 is pressed along the periphery of the well opening by utilizing a plurality of weights 6, and the first protective net 1 is fixed above the opening. During blasting, the generated shock waves are reduced by the protection mechanism 5 and are discharged from the net gaps of the protective net, one part of flying stones is blocked by the suspended protection mechanism 5, the other part of flying stones is blocked by the first protective net 1, and the smaller part of the flying stones flies out from the net gaps of the first protective net 1. Adopt protection mechanism 5 and first protection network 1 to the protection of pile foundation blasting flyrock in this embodiment, protection mechanism 5 can effectively arrange to reduce and weaken the direct impact of high-pressure gas, shock wave to covering safeguard measure behind the well explosive explosion, when reducing the flyrock departure, has also reduced the impact and the damage of flyrock to first protection network 1 to guarantee the effect of first protection network 1's safeguard measure.

The protection mechanism 5 in this embodiment is a waste rubber tire. Flying stones flying out from the middle of the rubber tire are approximately in the vertical direction, one part of the flying stones is blocked by the first protective net 1, and the other part of the small crushed stones vertically fly out after passing through the first protective net 1; the rubber tire can not only block a part of flying stones and play a role in protecting the opening retaining wall concrete 3, but also ensure that the flying stones are not easy to incline and fly out, and the damage radius of the flying stones can be greatly reduced.

The heavy object 6 is a bag body filled with soil, sand or gravel, can play a role in fixing the first protective net 1 well, can use local materials, and is simple and rapid to operate.

A second protective net 7 is laid between the first protective net 1 and the heavy object 6; the mesh size of the second protective net 7 is smaller than that of the first protective net 1, so flying stones can be further reduced. In the embodiment, a first layer of a wellhead is covered with phi 20 twisted steel bars and welded into a grid with the specification of 0.3m multiplied by 0.3m, a waste tire is hung in a well through a thin steel wire rope 4, a phi 10 steel wire mesh with the specification of 0.02 multiplied by 0.02m is covered on the waste tire, and 4-5 bags of woven bagged loess are covered on the uppermost layer along the periphery of the wellhead.

A cushion block 8 is also arranged between the upper surface of the retaining wall concrete 3 and the first protective net 1. In the embodiment, 5-6 groups of cushion blocks 8 are placed on the surface of the concrete retaining wall of the pile hole 2, the well mouth and the covering protection measures are isolated by a certain height (40-50cm), and high-pressure gas and shock waves can be smoothly discharged, so that the effect of the protection measures is ensured.

The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the protection scope of the present invention, which is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a device that is used for bridge pile hole digging blasting safety protection which characterized in that: the protective device comprises a first protective net (1), wherein the first protective net (1) covers the concrete (3) of the protective wall at the hole opening of a pile hole (2); a protection mechanism (5) is also suspended in the position, close to the hole opening, in the pile hole (2) through a steel wire rope (4), one end of the steel wire rope (4) is fixed with the protection mechanism (5), and the other end of the steel wire rope (4) is tied to the first protective net (1); and a heavy object (6) is arranged above the first protective net (1), and the heavy object (6) is arranged around the edge of the hole.

2. The device for the safety protection of bridge pile hole digging blasting according to claim 1, characterized in that: the protection mechanism (5) is a waste rubber tire.

3. The device for the safety protection of bridge pile hole digging blasting according to claim 1, characterized in that: the weight (6) is a bag body filled with soil, sand or gravel.

4. The device for the safety protection of bridge pile hole digging blasting according to claim 1, characterized in that: a second protective net (7) is laid between the first protective net (1) and the weight (6); the mesh size of the second protective net (7) is smaller than that of the first protective net (1).

5. A device for bridge pile hole digging blasting safety protection according to claim 4, characterized in that: the first protective net (1) is a grid welded by phi 20 twisted steel bars, and the specification is 0.3m multiplied by 0.3 m; the second protective net (7) is a phi 10 steel wire rope (4) net, and the specification is 0.02 multiplied by 0.02 m.

6. A device for bridge pile hole-digging blasting safety protection according to any one of claims 1-5, characterized in that: and a cushion block (8) is also arranged between the upper surface of the retaining wall concrete (3) and the first protective net (1).