KR101148175B1 - Underground pressurization type mine filling apparatus and method - Google Patents

Abstract

PURPOSE: A mine filling apparatus for an exhausted mine through the pressurization of the ground and a sand filling method through the pressurization of the ground using the same are provided to easily and rapidly fill a mine with filler by reducing the number of boreholes. CONSTITUTION: A mine filling apparatus for an exhausted mine through the pressurization of the ground comprises a borehole(110), a filler mixing unit(120), a filler injection unit(130), an injection pipe support unit(140), and a filler diffuser unit(150). The borehole is vertically formed in a mine. The filler mixing unit is formed on the ground around the borehole. The filler injection unit forcefully injects filler to the borehole through an filler injection pipe member(133). The injection pipe support unit lifts up the filler injection unit when the mine is filled with filler and fixes the lifted filler injection unit. The filler diffusion unit widely diffuses the filler discharged from the filler injection unit.

Description

Underground Pressurized Tunnel Filling Device for Abandoned Mine and Underground Pressurized Sand Filling Method Using It {UNDERGROUND PRESSURIZATION TYPE MINE FILLING APPARATUS AND METHOD}

The present invention relates to an underground pressurized tunnel filling device for a closed mine and an underground pressurized sand filling method using the same, and more particularly, to improve the diffusion of fillers in a tunnel to reduce the number of perforations for drilling and the diameter of the drill, The present invention relates to an underground pressurized tunnel filling device for an abandoned mine and an underground pressurized sand filling method using the same, which allow the charging of the mine easily and quickly.

In general, mine tunnels are temporarily operated until the mining work is completed, so unlike civil tunnels and large underground spaces that are permanently operated, they do not provide sufficient reinforcement. Since the exaggerated blasting is performed in the situation in which the blasting vibration control is completely excluded in the process of excavating the mine shaft, the rock and the main wall around the tunnel are damaged by the blasting vibration, and the crack layer is developed to relax the tunnel. It is characteristic that the area is diffused.

In addition, since most of the mining waste mines are prevented as they are, the ground subsidence due to the abandoned mines occurs frequently. The settlement due to the abandoned mine can be divided into trough type sink and sinkhole type sink.

Trough type settlements generate a gradual slow surface subsidence curve over a large area, and over long periods of time they are unrecognized, which is due to the destruction or punching of Gwangju, which supported the upper half. Although the settlement is small, it has the characteristic of occurring slowly and generally moderately in the long term over a large area and does not affect the stability of the upper structure.

In addition, since sinking occurs in the form of sinking of the sinkhole-type sinking surface, the sinking amount is large and difficult to predict. In addition, the shape of the settlement is a cylindrical or conical form of steep incline, which may reach several meters to several tens of meters, and the strength of the bulking of rocks caused by the collapse of the upper part of the mining cavity and the inflow of groundwater. It is small in size because it is transmitted by deterioration, but it can seriously damage lives or ground structures.

Mining cavity, which acts as the biggest cause of settlement, affects settlement according to its size and shape, and also affects settlement according to the state of the upper half of the drilling cavity. The size and shape of the mining cavity depend on the mining method and the degree of mining, and the interaction between these mining and the surrounding geological conditions will have a great influence on the settlement.

In Korea, since the collapsed coal mining method is mainly used, the occurrence rate of ground subsidence of dormant and abandoned mines is high.

On the other hand, the ground depression occurrence time due to the mining history of the abandoned mine is determined by various factors such as coal seam strength, strength of the top and bottom rocks, fracture range, groundwater presence, cavity depth, size of the trajectory, mining size, etc. Is very difficult. Therefore, the reinforcement method for areas concerned with ground depression by jointly should select the areas where structural and life damages are expected to be greatly affected by future depression, and comprehensively examine and apply economic feasibility, constructability, common condition, and surface condition.

In order to prevent ground subsidence damage caused by the destruction of mining surroundings, the reinforcement method should be selected considering the mining status and ground conditions of the target area by referring to the suitability and applicability of the construction method.

Methods that can be applied to prevent ground subsidence include cavity top reinforcement, deep foundation, peer construction in the cavity, grout column, grout case, hydraulic filling, filling grout, full excavation and refilling. Not only one is applied at the construction site, but several construction methods are applied in combination depending on site conditions, applicability of construction methods, constructability and efficiency.

Cavity reinforcement is a method of grouting the cavities above ground or by applying micropile to reduce settlements and excessive inequality and to prevent sinking due to the propagation of collapse.

The superstructure foundation of the cavity is constructed by grouting or micropile to behave like a rigid body so that the ground acts as an integrated composite member. In addition, because the construction on the ground has the advantage that the construction is advantageous and can prevent excessive unequal settlement of the local area, but it is difficult to completely suppress the settlement and has the disadvantage of expensive construction cost.

Deep foundation reinforcement method constructs deep foundation up to the stable layer of mining lower half and directly supports individual structures. Drilling large diameter balls (8 ~ 24inch) up to the lower half of the cavity to construct foundation or pile type .

In the case of using a pier, the concrete column is constructed in a permanent steel casing from the bottom of the cavity to the surface to support the structure.In the case of a pile, the concrete filled pipe is grounded from the bottom of the cavity after drilling by connecting the borehole to the bottom of the cavity. Constructed to support the upper half.

Peer construction in the cavity is a reinforcement method that supports pillars in the cavity by installing pillars in the cavity, and is applied to prevent temporary depression. This reinforcement method has a relatively strong rock mass around the mining area to be reinforced. Applicable only when the enemy is above the ground level, but also in areas where the cavity is flooded and where drainage is possible.

For the construction of a peer, a large diameter borehole is used to approach a construction target cavity from the surface or a cavity through a previous shaft. Therefore, it is possible to work while checking the condition in the cavity, but because of the work in the mine, workability is limited and safety evaluation is important.

The grout column reinforcement method is an auxiliary support system in the form of grouted pillars or aggregate peers in which aggregates are injected through boreholes, and then grout materials are injected to form columns in underground cavities. The applicability of this method depends on the local situation, but is generally economical when the depth of the underground cavity is between 9 and 50 m.

The grout case reinforcement method is not widely used to form pillars by placing concrete after installing steel pipes from the lower part of the cavity to the upper part of the cavity, but it is applied when the size of the cavity is relatively large. If the height of the cavity is large, the grout column supporting the upper half is relatively expensive because many materials are used, and the grout case method is used as an alternative.

However, this reinforcement method is only to prevent temporary depression, so it cannot be a fundamental countermeasure, and attention should be paid to construction safety since large equipment will approach the work area.

Hydraulic filling is the filling of the cavity by transferring particulate material in the form of a slurry with water. Typical hydraulic filling is remotely controlled in the cavity or near the mining site where the filling takes place, and all work is performed from the surface. The effects of hydraulic refilling include the filling of underground cavities, the lateral support role to maintain the strength of Gwangju, the removal or reduction of oxidizing conditions and acidic water, the protection of the support against weathering, the prevention or reduction of settlement. Fillers include dendritic, aggregate, sand, and cement. These materials should be examined for engineering properties by laboratory tests before filling, and permeability, specific gravity, and particle size distribution should be investigated. Based on these tests, the design of the filler can be made and the basis for predicting the behavior in the field.

Filling grout is basically a method of hydraulically filling with a mixture such as cement. In the case of reinforcement, the mixing degree of filler and cement may vary depending on the filling method and the size of filler. do. Filling grout materials include a variety of chemical compounds, including organic and fly ash mixtures, and Portland cement, with the exception of the cement being composed of fine granular materials such as sand or fly ash, and depending on site conditions, aggregates may be used.

Full excavation and recharging is a method of removing underground cavity by blasting or completely digging the upper half using artificial instruments, and then performing dense filling up to the lower part of the cavity or using the excavated material for filling in other areas. This method is similar to open-pit mining of coal and can be applied to areas where waste mines exist in the shallows.

On the other hand, such a method for charging the abandoned mine, the Korean Patent Application Publication No. 10-2008-0100574, "the closed mine cavity part wall and the method for charging the abandoned mine cavity using this shielding wall" and the Korean Patent Publication "10-2005-0019579" Waste structure internal cavity filling system and a filling method using the same.

The prior art as described above has a problem that the free fall of the filling through the perforation, the diameter of the perforation increases, the filling diffusion region in the tunnel is narrow, the number of perforations for filling injection increases.

The present invention was developed in order to improve the conventional problems as described above, to improve the diffusion of the filling in the tunnel to reduce the number of holes and the diameter of the hole for the filling, can easily and quickly progress the filling of the tunnel The purpose of the present invention is to provide an underground pressurized tunnel filling device for a closed mine and an underground pressurized sand filling method using the same.

In order to achieve the above object, the present invention is a perforated filler is formed perpendicular to the tunnel of the abandoned mine; A filler mixing part provided around the perforation to mix the fillers; A filler injection unit having a filler injection tube member inserted into the perforation, forcibly injecting the filler of the filler mixture into the perforation through the injection tube member; And an injection tube support part provided around the perforation to support the injection tube member and preventing the fall of the injection tube member after the injection tube member is raised. .

In addition, the present invention is filled with the filling is mixed, the filling tank connected to the filling inlet; A feed hopper for supplying a filling to the filling mixing tank through a conveyor; A fluid storage tank for supplying fluid to the filler mixing tank so that the filler moves smoothly through the filler inlet; And a packing mixing part including a mixing member provided in the filling mixing tank to mix the filling and the fluid.

In addition, the present invention is the upper and lower rotary shaft member rotatably installed in the filling tank; A mixing blade member spaced apart from the rotation shaft member; And a mixing member including a driving motor provided in the filling mixing tank so as to be connected to the rotating shaft member.

In addition, the present invention includes a transfer pump connected to the lower end of the filler mixture to transfer the filler of the filler mixture; And it is inserted into the perforated so that the filling is introduced into the tunnel through the perforation, and provides a underground pressurized underground filling apparatus for a waste mine including a filling inlet consisting of an injection pipe member connected to the transfer pump.

In addition, the present invention transfer pipe connected to the transfer pump; And a flexible injection tube connected to the transfer pipe so as to be inserted into the perforation and supported by the injection pipe support, and having a support groove formed on an outer surface thereof so as to be lifted and supported by the injection pipe support as the filling is filled in the tunnel. Provided is an underground pressurized tunnel filling device for a closed mine including a tube member.

In addition, the present invention is a frame fixed to the ground; And an injection tube supporter which is fixed to the frame to penetrate the filling injecting unit and includes a guide member configured to contact the filling injecting portion with a latch that restrains the lower portion of the filling injecting unit. to provide.

In addition, the present invention provides a underground mine tunnel filling device for a waste mine further comprises a filler diffuser formed in the filler inlet so as to diffuse the filler discharged from the filler inlet.

In addition, the present invention air supply line for discharging the compressed air to the filling outlet of the filling inlet; And a filling diffuser coupled to an outlet of the filling injecting unit and including a filling inducing unit for guiding a discharge direction of the filling to the side of the filling injecting unit.

In addition, the present invention is a coupling pipe coupled to the filler induction; And it is coupled to the lower end of the coupling pipe through a fixed rod so as to be spaced apart from the coupling pipe, and provides a underground mine tunnel filling device for a closed mine including a filler induction portion consisting of a diffuser plate member is formed with a downward slope.

Moreover, this invention provides the underground pressurized underground filling apparatus for waste mines using the filler mixed with the ratio of water 9-5: sand 1-5.

In addition, the present invention forms a perforation in communication with the tunnel to insert a flexible injection tube for injecting the filler into the perforation, and injects the water and sand in the filling at a high pressure through the flexible injection tube, Provided by the underground filling method for underground mine tunnel filling device for injecting the filling while lifting the flexible injection tube as the filling is filled.

In addition, the present invention provides a tunnel filling method using underground pressure underground tunnel filling device for the waste mine to supply high-pressure air through the air supply line from the outer surface of the flexible injection tube when filling the filling through the flexible injection tube. .

According to the underground pressurized tunnel filling apparatus for waste mines and the underground pressurized sand filling method using the same according to the present invention, it is possible to improve the diffusion of fillers in the tunnel to reduce the number of perforations and diameters of the bores for filling, There is an advantage that can be charged easily and quickly.

1 is a side view showing a underground pressurized tunnel filling apparatus for a closed mine according to an embodiment of the present invention.
Figure 2 is a perspective view showing the configuration of the filling mixing unit according to an embodiment of the present invention.
Figure 3 is a perspective view showing the configuration of the filling injecting unit according to an embodiment of the present invention.
Figure 4 is a perspective view showing the configuration of the injection tube support according to an embodiment of the present invention.
5 is an enlarged cross-sectional view of the main part of FIG. 4.
6 is a perspective view showing the configuration of a filler diffusion unit according to an embodiment of the present invention.
7 is a cross-sectional view of the combination of FIG.
Figure 8 is a flow chart illustrating the underground pressurized sand filling method using the underground pressurized tunnel filling device for abandoned mines according to an embodiment of the present invention.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It must be interpreted in terms of meaning and concept.

Hereinafter, an underground pressurized tunnel filling device for a closed mine according to the present invention and an underground pressurized sand filling method using the same will be described in detail with reference to the accompanying drawings.

First, with reference to FIGS. 1 to 7 will be described underground underground tunnel filling apparatus for a closed mine according to an embodiment of the present invention.

As shown in FIG. 1, the underground pressurized tunnel filling apparatus 100 for a closed mine according to the present embodiment is an underground pressurized type in which a filling material for filling a tunnel is made in a tunnel, and thus discharges a filling in the tunnel. In addition, the filling and filling of the tunnel can be easily performed.

To this end, it includes a perforation 110 in communication with the tunnel of the abandoned mine, a filler mixing unit 120 to mix the filler for filling the tunnel and a filler injection unit 130 for injecting the filler into the tunnel.

In addition, the underground pressurized tunnel filling apparatus 100 for waste mines according to the present embodiment, as the tunnel is filled by the filling material, the injection pipe support 140 and the filling injection part 130 for lifting and fixing the filling injecting unit 130 are fixed. The filler further includes a filler diffuser 150 to diffuse the filler discharged from the wide.

The perforation 110 is excavated to be perpendicular to the tunnel, and a pipe is inserted therein to prevent collapse.

Filler mixing unit 120 is provided on the ground around the perforation 110 to mix the filler around the perforation 110, the filling for filling the tunnel is mixed.

Specifically, the filler mixing unit 120 is a filler mixing tank 121 in which the filler is added and mixed, the supply hopper 123 for supplying the filling, the fluid storage tank 125 for supplying a fluid for smooth movement of the filling and And a mixing member 127 for mixing the filling material and the fluid introduced into the filling mixing tank 121.

The filling mixture unit 120 supplies the filling of the supply hopper 123 to the filling mixing tank 121 through the conveyor 123a. In addition, the fluid storage tank 125 supplies the fluid stored therein to the filling mixing tank 121 through a pump. In this case, the fluid stored in the fluid storage tank 125 uses groundwater generated during the drilling operation.

1 and 2, the filling mixing tank 121 is supplied with a filling filled with sand through the conveyor 113a and has a motor support 121a for supporting the mixing member 127 at the top thereof. do. In addition, the filling mixing tank 121 is provided with a filling discharge line 121b connected to the filling inlet 130 and a fluid fluid supply line 121c connected to the fluid storage tank 125 at the upper end. do. At this time, the filling discharge line 121b is formed at the lower portion of the filling mixing tank 121 so as to smoothly discharge the sand which is the filling mixed with the fluid to the filling injecting unit 130.

The mixing member 127 rotates the rotating shaft member 127a installed in the filling mixing tank 121 so as to be capable of rotating, the mixing blade member 127b and the rotating shaft member 127a coupled to the rotating shaft member 127a. The drive motor 117a is included.

The rotary shaft member 127a is rotatably installed in the filling storage tank 111 through the upper end and the lower end of the rotary shaft member 127a, and the upper end thereof is coupled to the driving motor 127c.

The mixing blade member 127b is provided in plural to be spaced apart from the rotating shaft member 127a and moves up and down along the axial direction of the rotating shaft member 127a according to the amount of the mixed filling material of the filling mixing tank 121.

The mixing blade member 127b includes a moving block 127b-1 into which the rotating shaft member 127a is inserted and a blade 127b-2 coupled to the moving block 127b-1. The moving block 127b-1 is constrained to move in the rotation shaft member 127a through the fastening of the bolt. The blade 127b-2 is inclinedly coupled to the moving block 127b-1, and a support rib is provided on one surface of the blade 127b-1 so that the coupling force with the moving block 127b-1 is improved.

1 and 3, the filling inlet 130 is connected to the filling mixing tank 121 through the filling discharge line 121b, and through the drilling 110, the filling mixed with the fluid at a high pressure. Forced discharge into the inside of the

This, the filling injecting unit 130 includes a transfer pump 131 for forcibly transferring the filling of the filling mixing tank 121 and the injection tube member 133 for transferring the filling so that the filling is transported to fill the tunnel.

The transfer pump 131 is connected to the filling mixing tank 121 through the filling discharge line 121b and forcibly transfers the filling to the injection pipe member 133.

The injection pipe member 133 is a flexible injection pipe 133b inserted into the transfer pipe 133a and the perforation 110 for the transfer of the filler material so that the filling material transferred through the transfer pump 131 is introduced into the tunnel through the hole. Include. In this case, the injection pipe member 133 is formed of a different material from the transfer pipe 133a and the flexible injection pipe 133b.

The transfer pipe 133a is formed of metal, and one end thereof is connected to the transfer pump 131. Such, the transfer pipe 133a is installed up to the perforation 110, and is stably installed on the ground through the support.

One end of the flexible injection pipe 133b is coupled to the transfer pipe 133a and the other end is inserted into the punching hole 110. The flexible injection tube 133b is inserted into the perforation 110 through the injection tube support 140 and is supported to be liftable to the injection tube support 140.

In addition, the flexible injection pipe 133b is supported by the injection pipe support 140 while gradually rising from the perforation 110 as the filling is filled in the tunnel.

In addition, the support groove 135 is formed on the outer surface of the flexible injection pipe 133b so as to be stably supported by the injection pipe support 140.

In the present embodiment, a state in which the transfer pipe 133a is horizontally installed is described as an example, but the transfer pipe 133a may be installed to be inclined upwardly or vertically depending on the position where the filling injecting unit 130 is installed. For example, depending on the capacity of the transfer pump 131, the separation distance between the perforation 110 and the transfer pump 131 may be up to 40 mm, and the transfer pipe 133a may be installed up to 37 m vertically. In addition, the diameter of the injection pipe member 133 may be formed to 50-100 mm.

4 and 5, when the flexible injection tube 113b rises, the injection tube support part 140 supporting the flexible injection tube 133b is released from the flexible injection tube 133b and the flexible injection tube 133b is released. Only the descending of 133b is restrained.

To this end, the injection tube support 140 includes a frame 141 fixed to the ground on which the perforation 110 is formed, and a guide member 143 through which the flexible injection tube 133b is supported. At this time, the support 141a for fixing the guide member 143 is formed in the frame 141.

The guide member 143 is provided with a latch 143a for restraining the falling of the flexible injection tube 133b at the upper end thereof, and an insertion hole 143b through which the flexible injection tube 133b penetrates is formed at the center thereof.

In addition, the guide member 143 has an installation groove 143c for installing the latch 143a at the upper end thereof, and the latch 143a is inserted into the support groove 135 of the flexible injection tube 133b to allow the flexible injection tube. Restrain the descent of 133b. At this time, the support groove 135 is formed with an inclined surface (143d) for supporting the rotation of the latch (143a).

The latch 143a is rotatably coupled to the installation groove 143c through a fixing pin, and is elastically supported downward through a spring installed on the fixing pin. Since the latch 143a is elastically supported in the downward direction through the spring, the latch 143a easily and stably restrains the lowering while preventing the rising of the flexible injection pipe 133b.

1, 6, and 7, the filler diffusion part 150 for improving the diffusion of the filler discharged from the flexible injection tube 133b is provided in the flexible injection tube 133b.

Specifically, the filling diffusion unit 150 is an air supply line 151 for injecting compressed air from the outer surface of the flexible injection pipe 133b to the filling outlet side, and the filling guide part for guiding the filling to the side of the flexible injection pipe 133b. 153.

The air supply line 151 is fixed to the outer surface of the flexible injection pipe 133b and sprays compressed air through the compressor. Through the discharge of the compressed air of the air supply line 151, the filling discharged from the flexible injection pipe 133b can be more widely diffused into the tunnel.

The filler induction part 153 is coupled to the lower end of the flexible injection tube 133b and guides the discharge direction of the filling discharged from the flexible injection tube 133b to the side.

To this end, the filler induction part 153 includes a coupling pipe 153a coupled to the flexible injection pipe 133b and a diffusion plate member 153b for inducing diffusion of the filler to the side of the flexible injection pipe 133b.

The diffusion plate member 153b is formed with an inclined surface 153c for guiding the filling, and the inclined surface 153c is formed to be inclined downward with respect to the center of the diffusion plate member 153b. For this reason, the filling material which hits the diffuser plate member 153b is uniformly spread to all sides of the flexible injection pipe 133b.

Next, the underground pressurized sand filling method using the underground pressurized tunnel filling device for waste mines comprised as mentioned above is demonstrated with reference to FIG.

1 and 8, a perforation 110 is formed from the upper surface of the shaft to the shaft by using a puncher (see a in FIG. 8). At this time, the steel pipe is inserted into the inside of the perforation 110 to prevent the perforation 110 to collapse (see b of FIG. 8).

Then, as shown in c of FIG. 8, the flexible injection pipe 133b is inserted into the interior of the tunnel through the perforation 110, and the filling material mixed with water and sand is discharged at a high pressure in the tunnel using the transfer pump 131. . At this time, the filling is used by mixing water and sand in a ratio such as a ratio of water 9 to 5: sand 1 to 5, which is to facilitate and facilitate the transfer of sand through the transfer pump 131.

In addition, when filling the filling to generate a pneumatic pressure outside the flexible injection pipe 133b to diffuse the filling discharged from the flexible injection pipe 133b to a far distance. Because of this, the filling can be filled while spreading the filling wider in the shaft, so that the formation intervals of the perforations 110 can be widened, thereby making the filling of the shaft faster.

At this time, the water mixed with sand uses the ground water generated when forming the perforation (110).

In addition, as the filling is filled in the tunnel at a predetermined height, the flexible injection pipe 133b is gradually raised to continuously discharge the filling in the flexible injection pipe 133b, thereby smoothly filling the tunnel.

When the filling of the filling is completed in the tunnel, the mortar is filled to the upper side of the filling to stabilize the inside of the filling by the filling and prevent the loss of the filling which is sand. At this time, the mortar is injected to the perforation 110 to terminate the filling of the tunnel.

What has been described above is only one embodiment for carrying out the present invention, and the present invention is not limited to the above-described embodiment, and the present invention is made without departing from the gist of the present invention as claimed in the following claims. Anyone with ordinary knowledge in this field will have the technical spirit of the present invention to the extent that various modifications can be made.

Claims (11)

A hole for filling injection 110 formed perpendicular to the tunnel of the abandoned mine; Filler mixing unit 120 is provided around the perforation to mix the filler; A filler injection unit 130 having a filler injection tube member 133 inserted into the perforation and forcibly injecting the filler of the filler mixture into the perforation through the injection tube member; An injection tube supporter 140 provided around the perforation to support the injection tube member and preventing the injection tube member from falling after the injection tube member is raised; And a filler diffuser 150 formed in the filler injector so as to diffuse the filler discharged from the filler injector.
An air supply line 151 for discharging the compressed air to the filler outlet of the filler inlet; And a filling induction part 153 coupled to an outlet of the filling injecting part and guiding a discharge direction of the filling toward the side of the filling injecting part. The method of claim 1, wherein the filler mixing unit,
Filling is mixed and charged, the filling tank 121 is connected to the filling inlet;
A supply hopper for supplying a filling material to the filling mixing tank through a conveyor 123a;
A fluid storage tank 125 for supplying a fluid to the filler mixing tank so that the filler moves smoothly through the filler inlet; And
A mixing member 127 provided in the filling mixing tank to mix the filling and the fluid;
Underground pressurized tunnel filling apparatus for a closed mine, comprising a. The method of claim 2, wherein the mixing member
A rotary shaft member 127a having an upper end and a lower end rotatably installed in the filling mixing tank;
A mixing blade member 127b spaced apart from the rotating shaft member; And
A driving motor (127c) provided in the filling mixing tank to be connected to the rotating shaft member;
Underground pressurized tunnel filling apparatus for a closed mine, comprising a. The method of claim 1, wherein the filler inlet;
A transfer pump 131 connected to a lower end of the filler mixture part to transfer the filler material of the filler mixture part; And
An injection pipe member 133 inserted into the perforation so that the filler is introduced into the tunnel through the perforation and connected to the transfer pump;
Underground pressurized tunnel filling apparatus for a closed mine, comprising a. The method of claim 4, wherein the injection tube member
A transfer pipe 133a connected to the transfer pump; And
A flexible injection pipe connected to the transfer pipe to be inserted into the perforation and supported by the injection pipe support part, and having a support groove 135 formed on an outer surface thereof so as to be lifted and supported by the injection pipe support part as the filler is filled in the tunnel ( 133b);
Underground pressurized tunnel filling apparatus for a closed mine, comprising a. The method of claim 5, wherein the injection tube support portion
A frame 141 fixed to the ground; And
A guide member 143 fixed to the frame to penetrate the filling injecting unit and provided with a latch 143a for restraining the lower portion of the filling injecting unit to contact the filling injecting unit;
Underground pressurized tunnel filling apparatus for a closed mine, comprising a. delete delete The method of claim 1, wherein the filler induction part,
A coupling pipe 153a coupled to the filler induction part; And
A diffusion plate member 153b coupled to a lower end of the coupling pipe through a fixing rod 155 to be spaced apart from the coupling pipe, and having a downward inclined surface 153c formed thereon;
Underground pressurized tunnel filling apparatus for a closed mine, comprising a. By using the underground pressurized tunnel filling device for waste mines of any one of Claims 1-6,
Inserting a flexible injection tube for injecting a filler into the puncture to form a perforation in communication with the tunnel, and injects a filler mixed with water and sand at a high pressure through the flexible injection tube, the filler is filled in the tunnel Underground pressurized sand filling method using the underground pressurized underground filling device for the waste mine, characterized in that the filling is inclined while lifting the flexible injection pipe. 11. The method of claim 10,
The underground pressurized sand filling method using the underground pressurized tunnel filling device for the abandoned mine, characterized in that for supplying the high-pressure air through the air supply line from the outer surface of the flexible injection tube when filling the filling through the flexible injection tube.

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