KR101155240B1 - Whole type multi-blasting mat and blasting method using the same - Google Patents

Abstract

The present invention relates to an integrated composite blasting mat, comprising: a support formed of reinforcing bars having a predetermined thickness; An elastic member positioned above the support to suppress noise generated at the time of blasting and absorb shock; A nonwoven fabric positioned above the elastic member to absorb noise; An iron plate member made of a steel sheet having a predetermined thickness and width and positioned on an upper portion of the nonwoven fabric; An overlay member positioned above the iron plate member; A coupling part for fixedly coupling the support part, the elastic member, the nonwoven fabric, the iron plate member, and the overlay member; And, characterized in that it comprises a hook for connecting a plurality of blasting mat, by installing a folded blasting mat in a manner spreading while folding the blasting mat on the surface of the blasting workshop usefully by using a crane or fork lane working in the field of the blasting mat It is easy to move and install, can reduce installation time, and has a remarkable effect to improve the scattering and noise reduction effect of crushed stone.

Blasting, Crushed Stone, Noise, Blasting Mat, Blasting Method

Description

Whole type multi-blasting mat

The present invention relates to a blasting mat used when removing rock in civil engineering, and more particularly, to reduce the very high level of noise generated during blasting and to prevent the crushed rock from scattering. It is about the mat.

In general, rock formations are used when building substructures of high-rise buildings or other large ground structures, underground structures such as subways or underground tunnels, or when constructing or expanding mountain roads or coastal roads with mountainous terrain. If you need to remove the ground formed as a must occur.

In this case, the rock formed on the ground is excavated by blasting with explosives such as dynamite and removing the crushed rock. The blasting process of the rock blasts a plurality of blasting holes in the rock and blasts the explosives inserted into the blasting holes, in which the rock is crushed by the explosive force of the explosives, and the crushed rock is scattered to the surroundings and causes high noise at the same time. do.

In particular, the blasting noise is very high, and the area of the damage is wide because the air is transmitted as a medium. In fact, civil complaints from blasting noises occur frequently at various construction sites.

Since crushing of rocks requires more than a certain amount of explosive power, there is no special measure against blasting noise in the past, such as reducing the amount of explosives used at one time, or avoiding work during nighttime when the impact of noise is high. Blasting was done in a passive way. In this case, there is a problem that the work efficiency is lowered and the air is delayed.

Recently, low noise and low vibration blasting methods have been developed and applied for patents. Among them, domestic patent registration No. 10-0354220 (relaxed blasting method and its blasting mat) and the accompanying dual-application utility model registration 20-0207876 have a blasting ball. A method of covering a blasting site is described by installing a specially manufactured blasting mat on the top.

1 is a perspective view showing the structure of a conventional blasting mat. Referring to Figure 1, the conventional blasting mat is an iron member (1) having a size that can cover the blasting section, an elastic member consisting of waste tires to block the explosion noise and explosion gas and crushed stone to the outside ( 2) and a weight reinforcing member (3).

The conventional blasting mat as described above processes a rubber sheet or waste tire. Since the gap between the rubber plate or the connection part of the waste tires is generated, noise transmission is concentrated through air, and the blasting mats have a horizontal × vertical size of 3m × 6m (or 4m) over the rubber line. It is about 8kg) and weighs about 50kg, so it is necessary to carry and install it by two workers, or to move and install the waste tire mat (about 500kg), which is usually 3m × 4m, which is woven by cable using equipment. It is cumbersome and takes a long time to install, and the scattering and noise reduction effect of the crushed stone is not satisfactory, the installation time is longer, and there is a relatively inadequate safety.

The present invention has been made in order to solve the various problems as described above, the present invention is not satisfactory in the conventional blasting mat and blasting method of the effect of reducing the scattering and noise of crushed stone, the device for reducing the additional blasting noise It is an object of the present invention to provide an integrated composite blasting mat that can solve the problem of long installation time and insufficient stability.

Integrated composite blasting mat according to the present invention for achieving the above object,

A blasting mat installed on an upper surface of a blasting section having a plurality of blasting holes loaded with explosives, the blasting mat for preventing scattering of crushed stone, which is formed by a reinforcing bar having a predetermined thickness; An elastic member 20 positioned above the support 10 to suppress noise generated when blasting and absorb shock; A nonwoven fabric 30 positioned on the elastic member 20 to absorb noise; An iron plate member 40 made of a steel plate having a predetermined thickness and width and positioned above the nonwoven fabric 30; An overlay member 50 positioned above the iron plate member 40; A coupling part 60 for fixedly coupling the support part 10, the elastic member 20, the nonwoven fabric 30, and the iron plate member 40; And, the hook portion 70 for connecting the blasting mat 100 in plurality,

Preferably, the hook portion 70 is formed to have a ring shape on the upper surface and the lower surface of the blasting mat, respectively, using a connecting member 80 such as a chain or a wire cable for the hook portion 70 By connecting a plurality of blasting mat 100 to each other to configure a single blasting mat set 200,

Preferably, the length of the connecting member 80 is formed to have a length shorter than the length (B) of the width of the blasting mat 100, each blasting mat when the blasting mat set 200 is placed in the blasting section It is characterized in that one end of the 100 is seated so as to overlap,

Preferably, the plurality of blasting mat sets 200 are seated so that one end thereof overlaps with the blasting section, and a plurality of blasting mat sets are provided on the hook portion 70 using a fixing member 90 such as a chain or a wire cable. Characterized in that the 200 is integrally configured,

Preferably, the connection member 80 is characterized in that all or part of the connection member 80 is covered with an insulator (85).

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According to the integrated composite blasting mat according to the present invention, by using a crane or a forklift working in the field by installing the folded blasting mat in a manner of unfolding while grounding on the surface of the blasting workshop, the movement and installation of the blasting mat is simple, and the installation time is improved. It can reduce and have a remarkable effect to improve the scattering and noise reduction effect of the crushed stone.

In addition, according to the integrated composite blasting mat according to the present invention, since each blasting mat can be stacked on top of each other during transportation and storage of the blasting mat, it is possible to store several blasting mats with a small space and improve work stability. There is a significant effect that can be.

Hereinafter, the advantages, features and preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view showing an upper surface of the integrated composite blasting mat according to the present invention, and FIG. 3 is a perspective view showing a lower surface of the integrated composite blasting mat according to the present invention. 4 is a cross-sectional view showing a part of the cut surface of A-A 'of the integrated composite blasting mat according to the present invention, Figure 5 is a cross-sectional view showing a state in which the overlay member is installed in the integrated composite blasting mat of Figure 4, 6 is a state diagram showing an embodiment in which a plurality of integrated composite blasting mat according to the present invention is connected to constitute a blasting mat set.

2 to 6, the integrated composite blasting mat according to the present invention is a support 10 formed of reinforcing bars having a predetermined thickness; An elastic member 20 positioned above the support 10 to suppress noise generated when blasting and absorb shock; A nonwoven fabric 30 positioned on the elastic member 20 to absorb noise; An iron plate member 40 made of a steel plate having a predetermined thickness and width and positioned above the nonwoven fabric 30; An overlay member 50 positioned above the iron plate member 40; A coupling part 60 for fixedly coupling the support part 10, the elastic member 20, the nonwoven fabric 30, and the iron plate member 40; And, the hook portion 70 for connecting the blasting mat 100 in plurality.

The support part 10 according to the present invention is formed of reinforcing bars having a predetermined thickness, and is preferably formed by arranging the cross section of the internal space formed by the plurality of reinforcing bars to form a substantially rectangular shape.

The elastic member 20 according to the present invention is preferably used to cut the waste tire in the waste recycling side without any gap, but is not limited to this may be used that is excellent in elastic force and easy to attach with a bolt or the like. . The elastic member 20 withstands the explosion pressure with the vibration buffering effect of the iron plate member 40 when blasting the rock to block the explosion noise and the external emission of the crushed rock.

The nonwoven fabric 30 according to the present invention is formed to have an area larger than that of the elastic member 20. Therefore, when the elastic member 20 is placed on the ground, the elastic member 20 seals the gap between the bottom surface and the ground of the blasting mat of the present invention, and the nonwoven fabric 30 is the elastic member 20. It covers the gap and completely seals the gap with the ground, blocking the crushed stone from scattering and blocking the noise.

The nonwoven fabric 30 is preferably lightweight having a density of 10 kg / ㎥ ~ 35 kg / ㎥. In this density range, it has noise blocking properties and complementary properties in mechanical and cushioning properties. In other words, if the density is too low, it may be advantageous in noise barrier properties, but may be disadvantageous in mechanical properties or buffering properties. On the contrary, if the density is too high, it may be advantageous in mechanical properties or buffering properties, but it may be disadvantageous in noise blocking properties.

In addition, the dynamic modulus of the nonwoven fabric 30 is preferably 1 MN (Mega Newton) / m 3 ~ 20 MN / m 3, more preferably 1 MN / m 3 ~ 10 MN / m 3 range. In the case of having a dynamic modulus of elasticity in this range, it is advantageous in noise barrier properties and cushioning properties. The loss factor of the nonwoven fabric 30 is not particularly limited, but may have 0.05 to 0.2. The dynamic modulus and loss coefficient are based on the standard KS standard according to KS F 2868. In addition, the nonwoven fabric 30 preferably has a thermal conductivity of 0.05 kcal / mh ° C. or less.

Iron plate member 40 according to the present invention is formed of a steel plate having a constant thickness, reinforces the weight of the blasting mat, and serves to hold the crushed stone is scattered and spilled when blasting.

The overlay member 50 according to the present invention is manufactured by overlapping the nonwoven fabric and the vinyl, and is located on the upper portion of the iron plate member 40. The overlay member 50 has an insulation effect to prevent the blast mat is immersed in the rain and rust, and to prevent damage to the primer angle during blasting.

Coupling portion 60 according to the present invention is fixed to the support 10, the elastic member 20, the nonwoven fabric 30, and the iron plate member 40 integrally. Preferably, the coupling portion 60 is composed of a U clip and a nut so that the support portion 10, the elastic member 20, the nonwoven fabric 30, and the iron plate member 40 can be firmly fixed. . Although the coupling part 60 is illustrated as fixedly coupling the support part 10, the elastic member 20, the nonwoven fabric 30, and the iron plate member 40, the overlay member 50 is also the coupling part ( It can be obvious that it can be fixedly coupled by 60).

The hook portion 70 according to the present invention is formed to have a circular ring shape in order to join the chain or wire cable, so that the blasting mat is lifted by heavy equipment such as a crane or an excavator and moved to a desired work position. Preferably, the hook portion 70 is coupled to the eye bolt and the eye nut to have a circular ring shape on the upper and lower surfaces of the blasting mat 100, respectively, chain or wire cable to the hook portion 70 A plurality of blasting mats 100 may be connected to each other using a connection member 80 such as one to constitute one blasting mat set 200.

Preferably, the connecting member 80 is formed to have a length shorter than the length (B) of the width of the blasting mat 100, each blasting when the blasting mat set 200 is arranged in series in the blasting section One end of the mat 100 is to overlap. When the length of the connecting member 80 is shorter than the length of the width of the iron plate member 40, the blasting mat set 200 may be formed of the elastic member 20, the nonwoven fabric 30, and the iron plate member 40. One end is arranged in series in the blasting section so as to overlap, it is possible to effectively shield the gap between the plurality of blasting mat 100 to block the generation of crushed stone and the generation of noise.

In addition, the connection member 80 may be coated with an insulator 85 so as not to damage the prisms of the blast when the blasting mat set 200 is placed in the blasting section. The connecting member 80 may be formed by covering the entirety with an insulator 85 or by covering a part including a section in which the connecting member 80 contacts the ground when the blasting mat set 200 is seated in the blasting section. Can be.

Hereinafter, the blasting method using the integrated composite blasting mat according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 7 is a use state diagram illustrating a state in which the blasting mat set of FIG. 6 is seated in a blasting section, and FIG. 8 is a use state diagram illustrating a state in which a plurality of blasting mat sets of FIG. 7 are seated according to an installation use or a working range. to be.

7 to 8, the blasting method using the integrated composite blasting mat according to the present invention first divides the blasting section into equal distances in the horizontal direction of the rock layer to be excavated to the upper ground of the rock layer, and then divides the blasting method. A plurality of blast holes having a predetermined interval for each section is drilled toward the vertical downward.

Subsequently, in the step of drilling the blasting hole, the explosives are loaded in each of the blasting holes, and the explosives are divided into each blasting section so that they can be blasted, and the explosives loaded in the blasting holes in each blasting section are continuously arranged in a predetermined order. Connect blast conductors to explode.

In order to cover all of the plurality of blasting holes formed in each blasting section, the integrated composite blasting mat according to the present invention is installed in a single stage or a blasting mat set is constructed by using a connection member such as a chain or a wire cable.

Preferably, the blasting mat set 200 may include a plurality of blasting mats 100 connected to each other by a hook portion 70 having a length shorter than a length B of the width of the blasting mat 100. 80) connected to each other, the blasting mat set 200 is moved to the blasting section using a crane or excavator, etc., arranged in series from the blasting mat 100 at the bottom in order to overlap one end in the blasting section To be seated.

In addition, when it is necessary to cover a wider blasting section, the plurality of blasting mat sets 200 are seated so that one end of the blasting mat set 200 adjacent to each other overlaps, and adjacent blasting mats 100 overlapping each other. It is possible to integrate the plurality of blasting mat set 200 by connecting the hook portion 70 of the using a fixing member 90, such as a chain or wire cable.

As described above, by allowing one end of the plurality of blasting mat sets 200 to overlap, a wider blasting section can be covered at a time, thereby greatly improving work efficiency and drastically reducing time and labor required for installation. It becomes possible.

Although four blast mat sets 200 are illustrated as being integrated in FIG. 8, it is apparent that more blast mat sets 200 may be arranged and installed in order to improve efficiency or time according to the installation purpose or the working range. .

Finally, the blasting device connected to the blasting bus drawn out from the blasting section in which the integrated composite blasting mat is mounted is blasted to explode the explosives loaded in the blasting hole.

Although specific embodiments of the present invention have been described and illustrated above, it will be apparent that various modifications may be made by those skilled in the art without departing from the technical spirit of the present invention. Such modified embodiments should not be understood individually from the spirit and scope of the invention, but should fall within the claims appended to the invention.

1 is a perspective view showing the structure of a conventional blasting mat.

2 is a perspective view showing an upper surface of the integrated composite blasting mat according to the present invention.

3 is a perspective view showing a bottom surface of the integrated composite blasting mat according to the present invention.

It is sectional drawing which shows a part of cut surface of AA 'of the integrated composite blasting mat which concerns on this invention.

FIG. 5 is a cross-sectional view showing a state in which an overlay member is installed in the integrated composite blasting mat of FIG. 4.

6 is a state diagram showing an embodiment in which a plurality of integrated composite blasting mat according to the present invention is connected to constitute a blasting mat set.

FIG. 7 is a use state diagram illustrating how the blasting mat set of FIG. 6 is seated in the blasting section.

FIG. 8 is a use state diagram showing a state in which a plurality of blasting mat sets of FIG. 7 are seated depending on an installation use or a work range.

*** Explanation of symbols for the main parts of the drawing ***

10: support portion 20: elastic member

30: nonwoven fabric 40: iron plate member

50: overlay member 60: coupling portion

70: hook portion 80: connecting member

85: insulator 90: fixing member

100: blasting mat 200: blasting mat set

Claims (8)

In the blasting mat is installed on the upper surface of the blasting section formed with a plurality of blasting holes loaded with explosives to prevent scattering and noise of the crushed stone generated during explosion, A support 10 formed of reinforcing bars having a predetermined thickness; An elastic member 20 positioned above the support 10 to suppress noise generated when blasting and absorb shock; A nonwoven fabric 30 positioned on the elastic member 20 to absorb noise; An iron plate member 40 made of a steel plate having a predetermined thickness and width and positioned above the nonwoven fabric 30; An overlay member 50 positioned above the iron plate member 40; A coupling part 60 including a U clip and a nut for fixedly coupling the support part 10, the elastic member 20, the nonwoven fabric 30, and the iron plate member 40; And Integral composite blasting mat, characterized in that it comprises a hook portion (70) for connecting the blasting mat 100 in plurality. The method of claim 1, The hook portion 70 is formed to have a ring shape on the upper and lower surfaces of the blasting mat 100, respectively, using the connecting member 80 such as a chain or wire cable to the hook portion 70 Integrated composite blasting mat, characterized in that to configure a single blasting mat set 200 by connecting a plurality of blasting mat (100) to each other. The method of claim 2, The connecting member 80 is formed to have a length shorter than the length B of the width of the blasting mat 100, so that one end of each blasting mat 100 when the blasting mat set 200 is placed in the blasting section Integral composite blasting mat, characterized in that seated so as to overlap. The method of claim 3, wherein The plurality of blasting mat sets 200 are seated so that one ends thereof overlap the blasting sections, and the plurality of blasting mat sets 200 are mounted on the hook portion 70 using fixing members 90 such as chains or wire cables. Integral composite blasting mat, characterized in that the integral configuration. The method according to any one of claims 2 to 4, Integral composite blasting mat, characterized in that the connecting member 80 is covered in whole or in part with an insulator (85). delete delete delete

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