JP2000160577A - Explosive vibration control construction method by ground cutting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an explosive vibration control construction method by ground cutting capable of protecting a specific area or a structure by actively cutting off/offsetting earthquake force from a hypocenter, easy in construction work and capable of sharply reducing a work cost. SOLUTION: An uncharged hole and a charge hole are alternately bored along a specific line, and a fine trench 10 is formed in the ground by initiating an explosive by arranging a cutting explosive 13 in a layer shape in the charge hole. An explosive 21 for an air bag is arranged at a regular interval in a layer shape inside the trench 10 to construct an underground air bag chamber 20. An underground land mine hole 31 is bored along the front specific line, and an underground land mine 32 is arranged inside in a layer shape to construct an underground land maine chamber 30. An explosive initiating means 40 is arranged to the explosive 21 for an air bag of the air bag chamber and the underground land mine 32 of the underground land mine chamber to form a heterogeneous layer by automatically initiating the explosive by sensing an earhtquake wave at earthquake happening time to offset the earthquake wave by interfering with the earthquake wave.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a method for easily performing construction while protecting and protecting a specific area or structure by actively blocking and canceling seismic force transmitted from an epicenter. In addition, the present invention relates to an explosion-type vibration damping method by cutting the ground, which greatly reduces construction costs.

[0002]

2. Description of the Related Art In general, there is provided a method for protecting a structure from an earthquake by providing a seismic facility capable of absorbing seismic force transmitted when an earthquake occurs from the structure itself. In contrast, a separate anti-vibration structure capable of resisting an earthquake from around the area or structure to be separately protected is installed, and the seismic wave transmitted to the specific area and structure B is simply reduced. Although there is a method of blocking and protecting from earthquake damage, such anti-vibration structures mostly adopt a passive or defensive form of protection against seismic waves transmitted from the epicenter, and are completely Not absorbed or exhausted.

[0003] As a related vibration damping structure,
As shown in FIG. 1, an anti-vibration port 1 for excavating the ground in an open trench shape and vertically forming a heterogeneous layer composed of an air layer.
There is something to install. Such a conventional anti-vibration port 1 blocks the horizontal transmission of seismic vibration waves from the air layer, so that the damage caused by the earthquake can be reduced. However, such a conventional anti-vibration port 1 not only increases the cost for digging at the required depth and longitudinal length, but also has an open air layer, which may cause collapse of the hole wall. Since there is always
There was a problem that maintenance was very difficult.

Recently developed to solve such a problem of maintenance management, as shown in FIG.
After excavating the ground into an open trench type with a diaphragm wall, an air tube that is continuously connected to an air bag (bag body) that is a band-shaped tube shape using a membrane and civil engineering fibers There is an anti-vibration structure in which a kind of air tube mat anti-vibration wall 4 in which the mat 2 is charged and the concrete 3 is charged again is constructed underground.

[0005] Such an anti-vibration structure has the advantage that the air tube mat is buried in the ground, so that the anti-vibration efficiency is as good as that of the open trench type, and there is no need for maintenance after construction. It is true that it has its advantages, but the construction cost for excavating the ground to a predetermined depth also increases, and it is prevented due to the problem that the air pressure of the air envelope of the air tube mat decreases. There is a problem that the vibration effect is reduced.

[0006]

Accordingly, the present applicant has deviated from the defensive concept of having an earthquake-resistant form by providing a general structure itself with an earthquake-resistant facility, and has shifted from the outer shell of the structure to a structure or the like. A more aggressive and offensive form of anti-vibration that attempts to protect the specific area and structure B safely by preliminarily interfering with and canceling the approaching seismic wave E or creating several different layers. The present invention to be adopted has been invented.

SUMMARY OF THE INVENTION An object of the present invention is to provide an anti-vibration structure at a specific area or an outer edge of a structure for safe protection from earthquake damage, which departs from the defensive concept of the existing seismic form. In addition, by introducing an aggressive concept of anti-vibration, which is an aggressive concept that opposes seismic force, seismic force is cut off by several heterogeneous layers, and inverse elastic waves that collide with seismic elastic waves are generated. Accordingly, it is an object of the present invention to provide an explosion-proof vibration damping method by ground cutting which can protect specific areas and structures from earthquake damage by interfering, canceling, dispersing and disabling seismic waves.

Another object of the invention is to avoid excavating the ground,
By installing a structure that can actively block and cancel the seismic force underground, the explosion type by cutting the ground, which is easy to construct, has excellent anti-vibration effects, and can greatly reduce construction costs It is to provide an anti-vibration method.

[0009]

The following description of the terms "airbag", "underground wall material", and "underground mine" will be given below. "Airbag"
The high pressure gas generated during the explosion from the primer and the explosive charged in the uncharged hole in which the fine trench is formed has a function of blocking a seismic wave by forming a gas wall in the entire space between the fine trenches.

The "underground wall material" is a structural portion composed of a heterogeneous layer which absorbs an earthquake or the like by filling a space portion on the entire inner surface of the fine trench with a grout material and absorbs generated gas. It has the function of blocking seismic waves while ascending with the gas generated by fine suspended matter when an underground airbag explodes. An underground mine is an explosive loaded in a charge hole constructed along a fixed line of the ground at the forefront of the epicenter, and a destruction layer created by blasting rock mass on the rear surface It has an effect of canceling and blocking seismic waves, and has a function of generating an artificial elastic wave by a shock wave generated at the time of an explosion on the entire surface and causing it to collide with the seismic wave to cancel the vibration of the seismic wave.

The explosion-type vibration damping method by cutting the ground according to claim 1 of the present application is characterized in that the ground is formed by alternately piercing a non-charging hole 11 and a charging hole 12 in a vertical direction along a certain line. The explosives 21 for airbags are layered at regular intervals inside the fine trenches 10 by arranging the cutting explosives 13 in a layered manner in the charging holes 12 and igniting them, and forming the fine trenches 10 on the ground at regular intervals. After constructing the underground airbag chamber 20 and drilling an underground mine hole 31 along a certain line in front of the underground airbag chamber 20, the underground mine hole 31 is placed inside the underground mine hole 31. The underground mine room 30 is constructed by installing the layers 32 in layers, and the seismic wave transmitted to the airbag explosive 21 in the airbag room and the underground mine 32 in the underground mine room is sensed and automatically detonated. It is characterized in that a detonating means 40 is provided.

According to a second aspect of the present invention, in the explosion-type vibration isolating method by cutting the ground according to the first aspect, smoke emitting holes 53 are formed in a rear portion of the airbag chamber 20 at predetermined intervals in a vertical direction. After piercing the connecting passage 51 so that the lowermost part thereof communicates with the airbag chamber 20, a smoke emitting tube 52 filled with high-pressure gas is installed below the smoke emitting hole 53, and the upper part thereof is filled with the filling material A. An underground smoke chamber 50 is constructed.

The invention according to claim 3 is the invention according to claim 1 or 2
In the explosion-type vibration damping method by cutting the ground according to the above, the underground wall material 22 is constructed by filling or injecting a grout material into the airbag chamber 20. According to a fourth aspect of the present invention, there is provided the explosion-type vibration isolating method by cutting the ground according to the first, second or third aspect, wherein the airbag chamber is provided.
The 20 airbag explosives 21 and the underground mine 32 in the underground mine room 30 detonate with a small time difference for each hole, and after the airbag explosive 21 in the airbag room at the rear explodes first, The underground mine 32 in the underground mine room ahead is exploded.

[0014] The invention according to claim 5 is the invention according to claims 1, 2, and 3.
Or, in the explosion-type vibration damping method by cutting the ground according to 4, the explosive 21 for the airbag in the airbag chamber 20 is provided with a very small amount of explosive in layers at short intervals, and the underground mine 32 in the underground mine chamber 30 is provided. Is characterized by being installed in a sufficient amount to cancel the seismic waves. Claim 6
The invention according to claim 1, wherein in the explosion-type vibration isolating method by cutting the ground according to claim 1, 2, 3, 4, or 5, the underground mine 32 explodes between the underground airbag chamber 20 and the underground mine 30. And a heterogeneous layer is constructed.

The invention according to claim 7 is the invention according to claims 1 and 2,
In the explosion-type vibration isolating method by cutting the ground according to 3, 4, 5, or 6, the detonating means 40 includes a seismometer 41 for detecting a seismic wave transmitted from an epicenter and the explosive 21 for the airbag.
And a detonating circuit 43 that is loaded into the underground mine 32, and a detonation circuit 43 that interconnects the seismometer 41 and the detonator 42 and transmits a detonation command of the seismometer to the detonator 42 to detonate. It is characterized by the following.

The invention according to claim 8 is the invention according to claims 1, 2,
In the explosion-type vibration isolating method by cutting the ground according to 3, 4, 5 or 6, the detonating means 40 is provided with the explosive 21 for the airbag.
And a sound wave receiver 45 that is attached to the underground mine 32 and senses seismic waves; a sound wave sensor 46 that analyzes and determines a signal transmitted from the sound wave receiver 45; And a detonation circuit 48 for transmitting a current to the detonator 42 for detonation.

According to a ninth aspect of the present invention, there is provided the method of claim 1,
In the explosion-type vibration damping method by cutting the ground according to 3, 4, 5, 6, 7 or 8, a unit protection in which the underground airbag room 20, the underground mine room 30 or the underground smoke room 50 is combined with each other. It is characterized in that a swing belt line is constructed by a plurality of rows.

[0018]

Next, the technical structure of the present invention will be described.
The following is a description based on the attached drawings. The explosion-type vibration isolating method by cutting the ground of the present invention is shown in FIG.
As shown in FIG. 4, after alternately piercing the ground in a vertical direction along a certain line with no charging holes 11 and charging holes 12, a ground cutting explosive 13 is gradually added to the charging holes 12. After forming the fine trench 10 due to tensile fracture by setting up several tens of layers and detonating, an explosive 21 for an airbag is provided in several tens of layers in the uncharged hole 11 inside the fine trench 10 and ground. The middle airbag room 20 is constructed and the underground airbag room is
After drilling an underground mine hole 31 along a certain separation distance in front of 20, several underground mine 32 used for formation of a foreign layer and offsetting explosion inside the underground mine hole 31 The underground mine room 30 is constructed by installing
The basic technical idea of the present invention is to install an initiating means 40 for detecting an earthquake wave transmitted to each of the underground mine 32 and the underground mine and automatically initiating the detonation.

Here, the explosive 21 for the airbag in the airbag chamber 20 and the underground mine 32 in the underground mine chamber 30 are detonated with a small time difference in each hole, and the air in the airbag chamber at the rear is exploded. Preferably, after the bag explosive 21 first explodes, the underground mine 32 in the underground mine room ahead explodes later. This is because, after the explosive 21 for airbags having relatively low explosive power installed in the rear airbag chamber 20 is exploded to form a barrier film first, an underground mine 32 having a strong explosive energy ahead explodes. By doing so, the specific area and the structure B to be protected can be effectively protected.

Therefore, according to the present invention, when an earthquake is generated from the epicenter and the seismic wave E reaches the independent area or around the structure, the detonating means 40 senses the seismic wave E. Detonation means
Numeral 40 analyzes and judges the seismic wave E, instructs the explosive 21 for the airbag and the underground mine 32 to detonate, and causes them to explode. FIG. 4 (b) shows that when the airbag explosive 21 and the underground mine 32 of the present invention are exploded, a heterogeneous layer is formed to neutralize the seismic wave.

After the airbag chamber 20 first explodes to form a gas wall material layer w which functions as a membrane for blocking the space,
The underground mine room 30 at the front part explodes strongly, and the destruction layer x is formed on the gas wall material layer side of the rear airbag room, and at the same time, the gas is ejected upward to form the destruction layer. A film that blocks the space is formed in two layers, a crack layer y is formed immediately in front of the film, and an elastic wave layer z in the opposite direction is formed at the forefront to collide with the traveling direction of the seismic wave. Layers are formed.

Therefore, the seismic wave E has four different layers,
That is, the elastic wave layer z, the crack layer y, the destruction layer x, and the gas wall material layer w are cut off, exhausted, and canceled step by step from the forefront. The micro-trench 10 is formed by cutting the ground of a specific area to be protected and the outer edge of the structure B to a predetermined depth, and is a strong heterogeneous layer when an earthquake occurs. This is for forming an underground gas wall material layer.

As shown in FIGS. 3A and 5, a method for forming such a fine trench 10 is shown in FIG.
11 and the charging hole 12 are pierced to a predetermined depth, and the charging hole is
After the explosive for cutting 13 to be installed in 12 is installed in layers, and the filling A is inserted and installed between and between the layers, the explosive time difference causes the tensile destruction between the charge 12 and the uncharged hole 11 by tensile destruction. Noiseless
Cut by minimal vibration.

As described above, the fine trench 10 can be formed not only by drilling a charged hole and a non-charged hole in the vertical direction, but also by simply cutting it by a tensile breaking force to form a heterogeneous layer. It can be formed in the depth of the ground so as not to be compared with the open trench type by excavation, and the construction cost is possible with minimal cost that is less than 1/10 compared with the conventional technology.

The technique for forming the fine trench 10 is as follows.
Korean Patent Publication No. 97-68802, which is the applicant's earlier application
This is the same technique as the rock cutting method using tensile force described in Japanese Patent Application Laid-Open No. 11-93559 and Japanese Patent Application Laid-Open No. 11-93559. After cutting the ground by the technique as described above to form the fine trench 10,
Explosives 21 for airbags are layered at regular intervals in the uncharged holes inside the fine trenches 10 to form an airbag chamber 20.
To build. Such an airbag chamber 20 serves to block a seismic wave E by forming a gas wall inside the fine trench 10 when the airbag explosive 21 explodes.

Here, the explosive 21 for an air bag is shown in FIG.
As shown in FIG. 3 (b) and FIG. 6, land mines which are installed in the already drilled uncharged holes 11 and contain a small amount of unit explosives 30 to 70 g are installed in dozens of layers. At this time, the primer 42 is inserted into the mine, but it is necessary to treat the primer in a watertight manner so that groundwater is not flooded in the primer 42. At the time of the explosion, lightning strikes are blasted continuously at different times, and spontaneously blast from the top to the bottom.

The airbag chamber 20 installed in this way is
When the airbag explosive 21 is exploded, the high-pressure gas generated from the explosive forms a gas wall in the entire inside of the fine trench 10 to block the seismic wave E, thereby reducing the damage caused by the earthquake. Become like For reference, the airbag room
20 is installed so that there is no influence on the ground surface in the event of an unexpected explosion, so that scattering, explosion noise and ground displacement do not occur. If an earthquake occurs without warning or action, it can be triggered by ground constriction and friction, or be fully triggered by an overload seismic signal. It is desirable to be loaded in consideration of it.

Also, each line of the mine detonator must be covered so as not to be deteriorated for a long period of time, and the tensile force must be reinforced, measures must be taken so as not to be cut or extended, and reinforced when necessary. To do it. The mine detonator and the bus are loaded and connected so as to constitute two circuits each for safety and reliability. It is desirable that the mines be rotated every 10 years so that their safety and accuracy are sustained.

On the other hand, an underground wall material 22 is formed inside the airbag chamber 20 as shown in FIGS. The underground wall material 22 is a charge hole 12 already drilled by grout material.
Is formed on the entire inner surface of the fine trench 10 by being implanted through the structure. Such underground wall material 22
Plays a role in preventing the fine trench 10 from being depressed and also preventing foreign substances such as groundwater, earth and sand, and dust from flowing in.

The underground wall material 22 is an explosive for airbags.
At the time of the 21 explosion, it is crushed into dust by the heat and pressure of the explosion, and forms a foreign layer inside the trench to help block the seismic wave E. The underground wall material 22 itself must have a certain degree of vibration damping effect, must have many pores (porous), and have cushioning and elasticity. Also, when the airbag chamber is exploded, the underground wall material 22 is dispersed and scattered from within the fine trench,
It is even more preferable if it has an affinity for gas. As a material of the underground wall material 22 that can be easily dispersed, soft urethane / porous styrene or porous rubber balls can be selected.

On the other hand, the underground mine room 30 is constructed along a certain line in front of the airbag room 20, that is, at the forefront on the side of the epicenter, as shown in FIG. 3 (b) and FIG. It plays a role of actively interfering with and canceling the seismic wave E. That is, the underground mine room 30 is formed by piercing the underground mine hole 31 vertically at a certain interval along a certain line of the ground, and thereafter, a relatively large amount of unit explosive 500 to 2,000 g is built in the underground mine hole. Land mines 32 are set up in layers.

Therefore, when the seismic wave E arrives from the epicenter, the underground mine room 30 senses this, and the underground mine 32 is strongly exploded by the detonation command of the detonating means, so that the underground mine 32 is exploded.
Function to interfere and cancel out. The principle of destruction of underground land mines is to install a funnel hole formed at the time of the explosion to a certain extent by 30% to 50% and load it so that it explodes, or if possible, extend the duration of the explosion to generate low frequency elastic waves. When a large number of waves are generated and projected and reflected in the direction in which seismic waves come, primary layers induce a heterogeneous layer due to the forced movement of groundwater, and secondarily exhibit elastic wave interference and cancellation effects. I do.

In this underground mine 32, the airbag chamber 20 is "one".
Unlike forming a gas wall with a shaped air cushion, by forming a "V" shaped offensive morphology with destructive energy, it has the effect of interfering and counteracting or obstructing seismic waves. Is what you do.
Looking more specifically at the function when the underground mine 32 is blasted, the first role is to positively induce an elastic wave opposite to the seismic wave to cancel the seismic wave. Secondly, it has the role of cooperating to form a gas wall by additionally supplying a large amount of gas to the inside of the airbag chamber 20 which is passively constructed at the rear. In addition, it has the role of permeating explosive gas into the joints and pores of the ground or ganban ahead and refracting, reflecting, attenuating and canceling seismic waves.

The underground mine 32 can use various forms of explosives, but in the embodiment of the present invention, a land having a strong destructive energy loaded with a large amount of explosives of 500 to 2,000 g is used. Specify that you are using a medium mine. The underground mine installed in such an underground mine room 30 must be overcharged + 20% more than the general blast charge amount, and based on the concept of rock blast destruction based on the funnel hole principle Load it.

On the other hand, it is also possible to increase the destruction energy by reinforcing and installing a large number of underground mines of satellites around the underground mine 32 of each unit. The detonating means 40 includes an airbag explosive 21 for an underground airbag chamber and a ground mine 32 for an underground mine chamber.
It is a structural part that automatically detects a seismic wave transmitted to each other and automatically detonates it.

FIG. 8 shows a form in which two types of the priming means 40 are installed at the same time, the first priming means provided on the upper side and the second priming means provided on the lower side. The first detonating means 40 includes a seismometer 41 for sensing seismic waves transmitted from the epicenter, a primer 42 mounted on the airbag explosive 21 and the underground mine 32, and a seismometer 41.
And detonator 42 to interconnect and detonate the seismometer
An explosion circuit 43 for transmitting to and initiating an explosion.

Here, the seismometer 41 is installed in an office room separated from the underground mine room 30 by a long distance, and the seismic wave (P wave)
Main computer 41a that directly detects and issues an alarm sound
Read the vibration value of the seismic wave and
a) An earthquake monitor 41b sent to a. Therefore, the vibration value read from the earthquake monitor 41b is analyzed and judged by the main computer 41a, and the detonation command is transmitted to the detonator 42 through the detonation circuit 43 to detonate. At this time, when the vibration value is analyzed and judged from the main computer 41a and the detonation command is reached, the detonation command must be issued only at the specified vibration value or more in consideration of the earthquake history and the structures on the underground mine room etc. Can be.

The second detonating means 40 is provided with the explosive 21 for the air bag.
A sound wave receiver 45 for sensing seismic waves, which is attached and buried together with the underground mine 32, and a sound wave detector 46 for analyzing and judging a signal transmitted from the sound wave receiver 45, A switch 47 that is activated by the sound wave detector 46 to pass a current,
An example is shown in which the circuit comprises a detonation circuit 48 for transmitting to the detonation 42 for detonation.

Therefore, the seismic wave (P
When the wave is received and transmitted to the sound wave detector 46, the sound wave detector 46 reads and analyzes and determines the vibration value, transmits a detonation command to the detonator 42 through the detonation circuit 48, and detonates. At this time, similarly to the first detonating means 40, the vibration value is analyzed and
When issuing a detonation command, the detonation command can be issued only at a specified vibration value or more in consideration of the earthquake history and the structure on the underground mine room.

Although only one of the two detonating means 40 can be selected and installed on the explosive, even if there is a failure as in the embodiment of FIG. It is preferable that both are installed at the same time so that the detonation can be reliably performed. On the other hand, FIG.
4 and FIG. 4, a smoke vent 53 is perforated in a vertical direction in a rear portion of the airbag chamber 20 at a predetermined interval, and a connection passage 51 is perforated at the lowermost portion thereof so as to communicate with the airbag chamber 20. Later, a case is shown in which a smoke tube 52 filled with high-pressure gas is installed below the smoke hole 53, and an underground smoke room 50 in which the upper portion is filled with the filling material A is constructed.

As described above, the underground smoke chamber 50 is used when the earthquake occurs.
A smoke tube filled with a large amount of high-pressure gas by the detonating means 40
The explosion of 52 expels high-pressure gas, and a high-pressure gas wall is continuously formed throughout the inside of the airbag chamber 20 through the connection passage 51, so that seismic waves having a long duration can be efficiently blocked. Play an auxiliary role. In such a smoke canister 52, a gas wall generated from the airbag explosive 21 is instantaneously formed, and a high-pressure gas is generated in a timely manner from a point in time when a certain shutoff function is weakened to form a gas wall. Since it is formed and reinforced continuously, it is suitable for efficiently shutting off even long-duration earthquake vibrations.

Here, in the method of perforating the connection passage 51, the explosive is charged into the lower part of the smoke vent 53 and exploded, so that it can communicate with the airbag chamber 20. On the other hand, as described above, the anti-vibration method of the present invention constructs one unit anti-vibration belt line by combining the airbag room 20, the underground mine room 30 or the underground smoke generating room 50. Note that it is also possible to construct the anti-vibration belt line with a few arrays.

When the present invention is applied by distinguishing the explosive gas hues (yellow, white, green, etc.) of the airbag explosive 21, the underground mine 32 and the underground smoke canister 52, it is possible to visually classify them into different stages. Easy to identify. As described above, the present invention relates to a vibration damping system for a main structure that constructs a vibration damping belt from the outer periphery of a cultural property facility, a factory zone, a nuclear facility, a dam, a harbor, an airport, a housing complex, and the like, and a sphere or an entire city. It is clearly stated that the belt can be used as a wide-area anti-vibration system by constructing a belt with the anti-vibration belt line.

The embodiments described above are merely illustrative of the embodiments of the present invention, and are not to be construed as limiting the present invention. Examples existing within the true spirit and scope of the present invention are described below. All are included in the claims of the present invention.

[0045]

As described above, according to the present invention, the ground is easily cut by the rock cutting method using a tensile force, and then a small amount of the airbag explosive 21 is loaded into the inside of the ground at regular intervals to form an airbag. The underground mine room 30 is constructed by piercing an underground mine hole 31 along a certain line in front of the airbag room 20 and loading a powerful underground mine 32 into the inside thereof in a layered manner.
In the event of an earthquake, the seismic wave is cut off from the airbag chamber 20 by the detonation means 40 and the seismic wave from the underground mine room 30 is positively interfered with and offset by the seismic wave. Can be

First, the present invention, which departs from the conventional defensive seismic concept and introduces an aggressive anti-vibration concept that positively opposes seismic force, forms a staged belt line to cut off seismic force. , Offsetting and disabling specific areas and structures B
There is an anti-vibration and anti-vibration effect. Secondly, it has a structure in which a charge hole is deeply drilled in the ground without excavating the ground, and the explosive is charged. This has an effect that the construction is simple and the construction cost can be greatly reduced.

Third, since the vibration isolating belt is formed in a perforated form, there is an advantage that the influence of the topography and geology on the construction is small and the required space is minimized. Fourth, for cultural property facilities or existing structures for which seismic design has not been implemented, an anti-vibration belt will be built from the surrounding area afterwards, or a wide-area anti-vibration system will be built in the sphere or the entire city. This has the effect of ensuring that vibration isolation and restriction are achieved.

As described above, the explosion-type vibration damping method by cutting the ground according to the present invention, because the ground is pierced and the explosive is loaded without digging the ground, can be simplified and the construction cost can be greatly reduced. Rather, it is a very useful thing that can positively oppose the seismic force and cut off and offset the seismic force.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing a conventional oven trench type vibration damping structure.

FIG. 2 is a vertical sectional view showing a conventional air tube mat type vibration damping structure.

FIG. 3 is a plan view showing a vibration isolation system of the present invention.

FIG. 4 (a) is a vertical sectional view of an anti-vibration structure installed according to the present invention, and FIG. 4 (b) is a vertical cross-sectional view showing a state where an anti-vibration structure according to the present invention is exploded to form a foreign layer. .

FIG. 5 is a vertical sectional view showing a perforated state and explosive installation for forming a fine trench according to the present invention.

FIG. 6 is a vertical sectional view showing a state where an airbag chamber is constructed inside a fine trench according to the present invention.

FIG. 7 is a vertical sectional view showing a state in which an underground mine room according to the present invention is constructed.

FIG. 8 is an exemplary view showing a detonating means according to the present invention.

[Explanation of symbols]

10 ... fine trench, 11 ... no charge hole, 12 ... charge hole, 13 ... cutting explosive, 20 ... airbag chamber, 21 ... airbag explosive,
22 ... Underground wall material, 30 ... Underground mine room, 31 ... Underground mine hole, 32 ...
Underground mine, 40: Detonation means, 41: Seismometer, 41a: Main computer, 41b: Earthquake monitor, 42: Detonator, 43: Detonation circuit, 45: Sound receiver, 46: Sound detector, 47: Switch, 48 ... Explosion circuit, 50 ... Underground smoke room, 51 ... Connection passage, 52
... Smoke canister, 53 ... Smoke vent, A ... Filling material, B ... Structure, E ...
Seismic wave, w: gas wall material layer, x: fracture layer, y: crack layer, z: elastic wave layer.

Claims (9)

[Claims] 1. After the ground is formed by alternately piercing a non-charging hole 11 and a charging hole 12 in a vertical direction along a certain line, a cutting explosive 13 is installed in the charging hole 12 in a layered manner. A fine trench 10 is formed in the ground by detonating, and an underground airbag chamber 20 is constructed by installing an airbag explosive 21 in layers at regular intervals inside the fine trench 10 to construct the underground airbag. After drilling an underground mine hole 31 along a certain line in front of the bag room 20, an underground mine 32 is installed in a layer inside the underground mine hole 31 to construct an underground mine room 30. And an explosive explosive 21 for the airbag in the airbag room and an underground mine 32 in the underground mine room, which are provided with a detonating means 40 for detecting a transmitted seismic wave and automatically detonating the ground. Explosion-type vibration isolation method by cutting. 2. At a rear portion of the airbag chamber 20, smoke holes 53 are vertically formed at regular intervals, and a connection passage 51 is formed at a lowermost portion thereof so as to communicate with the airbag chamber 20. 2. A ground cutting apparatus according to claim 1, further comprising: installing a flue gas cylinder filled with high-pressure gas below the smoke vent hole, and constructing an underground smoke chamber in which the upper portion is filled with a filling material. Explosion-type vibration isolation method. 3. The method of claim 1, wherein the underground wall material 22 is constructed by filling or injecting a grout material into the airbag chamber 20. 4. An explosive for an airbag in the airbag chamber 20.
21 and the underground mine 32 of the underground mine room 30 are detonated with a small time difference in each hole, and the airbag explosive 21 in the airbag room at the rear explodes first, and then the underground mine room in the front. 4. The method of claim 1, 2, or 3, wherein the underground mine 32 is exploded. 5. An explosive for an airbag in the airbag chamber 20.
21. An underground mine 32 of the underground mine room 30 is installed with a sufficient amount capable of canceling a seismic wave, wherein a small amount of explosives is installed in layers at short intervals.
Explosion-type vibration isolation method by cutting the ground as described in 2, 3 or 4. 6. The underground mine 32 is destroyed by an explosion of the underground mine 32 to form a heterogeneous layer between the underground airbag chamber 20 and the underground mine 30. Explosion-type vibration isolating method by cutting the ground according to 4 or 5. 7. The detonation means 40 includes a seismometer 41 for sensing seismic waves transmitted from an epicenter, and an explosive for an airbag.
And a detonating circuit 43 for interconnecting the seismometer 41 and the detonator 42 and transmitting a detonation command of the seismometer to the detonator 42 to detonate. Claims 1, 2, 3, 4,
Explosive vibration damping method by cutting the ground according to 5 or 6. 8. The explosive means for an air bag according to claim 8,
A sound wave receiver 45 that is attached to the underground mine 21 and the underground mine 32, respectively, and detects a seismic wave; a sound wave sensor 46 that analyzes and determines a signal transmitted from the sound wave receiver 45; 4. A switch 47, which is activated by an electric current to activate the electric current, and comprises a detonation circuit 48, which transmits the electric current to the detonator and initiates an explosion. Explosion-type vibration isolation method by cutting the ground as described in 4, 5 or 6. 9. The underground airbag room 20, the underground mine room 30.
The ground cut according to claim 1, 2, 3, 4, 5, 6, 7 or 8, wherein the underground smoke generating chambers 50 are constructed with a plurality of unit vibration isolating belt lines combined with each other. Explosion-type anti-vibration method.