KR101918504B1 - Excavating method rock wall cutting-typed - Google Patents

Abstract

The present invention relates to a rock cut excavation method for excavating a point for excavation of a tunnel, comprising the steps of: displaying an outline line indicating a rock cutting mark and a dividing line indicating a dividing line of a cut section in the outline line; A perforation step of perforating the intersection of the outline line and the division line and the intersection between the division lines to form a cutting hole; And a digging hole forming step of cutting and removing the rock along the outline line and the dividing line to generate a digging hole.

Description

{EXCAVATING METHOD ROCK WALL CUTTING-TYPED}

The present invention relates to a rock-cut excavation method for excavating a point for tunnel excavation.

Blasting is the destruction of objects in tunnels, mines, underground spaces, and civil engineering sites. There are also explosions of concrete structures, but most of them are blasting to destroy rocks in mines and quarries. In rock blasting, it is common to drill a hole in a rock and charge it with explosives. Use a perforator (jumbo drill, etc.) to penetrate the loading hole to load explosives.

Usually, blasting balls are used with a diameter of several centimeters and a depth of several meters. However, large-scale blasting sometimes uses a charge ball having a diameter of 30 cm and a depth of 20 m.

There is also a method of loading and demolishing large quantities of explosives into open-air chargeable balls according to tunnels. The type and amount of explosives to be used, the number and arrangement of blasting holes to be exploited shall be determined after sufficient consideration, depending on the nature of the rock, the purpose of the blasting, etc.

Dynamite, ammonium nitrate explosive, ammonium nitrate emulsion explosive, etc. are used for the explosion work, but a chemical such as primer, fuse, and explosion wire is also needed. If you pay close attention to the handling and handling of anything, blasting is not a dangerous task.

Today, blasting operations range from shredding large chunks of rock to massive ones that bombard tens of thousands of rocks at the same time. A number of high-level techniques are used, including several hundred blasting holes in succession at intervals of a few meters per second, a method of preventing rock debris from flying away, and a technique of blowing in water.

However, in the conventional blasting excavation method, first, the inner blind portion of the excavation point is first blasted, and subsequently, the blasting stepwise is applied to the outside. More specifically, in the conventional blasting excavation method, a perimeter line of the excavation point is drilled at a relatively narrow interval and a small pore size to form a charge ball, and a relatively small amount of explosive is charged in the charge ball. Subsequently, a relatively large piercing hole is formed in the inside of the outline, and a relatively large amount of explosive is inserted into the piercing hole. In this state, the explosives are firstly exploded in the outer line, and subsequently the explosives inserted inside the outer line are exploded.

However, in the conventional excavation method, a large impact noise is generated as the explosive impact of the explosive inserted along the outer line is transmitted to the points other than the excavation point, and even the explosion impact causes cracks at the other points there was.

This is because it is dangerous to apply it to the excavation work for the underground facility complex or the relatively weak ground and the precision of the excavation is relatively low. Therefore, it is required to develop the improved excavation method.

Prior Art Document 1. Patent Publication No. 10-2002-0040950 (published on May 31, 2002)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a rock cut excavation method capable of precise and safe rock excavation by eliminating blasting noise and vibration through a rock cut method other than blasting We will do it.

According to an aspect of the present invention,

A confirmation step of displaying an outline line which is a rock cut display and a division line which is a division mark of a cutout section in the outline line;

A perforation step of perforating the intersection of the outline line and the division line and the intersection between the division lines to form a cutting hole; And

Generating a drilling hole by cutting and removing the rock along the outline line and the dividing line;

Is a rock-cut excavation method.

According to the present invention, since excavation is performed through a rock wall cutting method instead of blasting, blasting noise and vibration are eliminated, and precise and safe rock wall excavation is enabled.

In addition, since the excavation proceeds through the rock cut, it is possible to minimize the occurrence of various accidents occurring in the blasting process and to prevent the change of the structure and structure of the surrounding rock wall, thereby enhancing the stability of the excavated tunnel .

1 and 2 are views sequentially showing an embodiment of a rock drilling method according to the present invention,
FIG. 3 is a flowchart sequentially showing a rock drilling method according to the present invention,
FIG. 4 and FIG. 5 are plan sectional views sequentially showing the operation of the excavator utilized in the rock drilling method according to the present invention,
FIG. 6 is a front sectional view showing an operation of the excavator,
7 is a perspective view showing a state of an excavation hole excavated by the excavator,
8 is a view showing a finishing process of a tunnel excavated through a rock drilling method according to the present invention,
9 is a view showing a rock wall for another embodiment of the rock drilling method according to the present invention,
10 is a perspective view showing a guide rod inserted into an auxiliary hole of a rock drilling method according to the present invention,
11 is a plan sectional view showing a state in which the guide rod is inserted into the auxiliary hole while being excavated,
12 is a cross-sectional view of the supporter of the supporter in a state where it is installed on the guide rod,
13 is an exploded perspective view of the supporter,
FIG. 14 is a view showing a state in which the supporter is inserted into an auxiliary ball and operated,
15 is a view showing another embodiment of the supporter,
FIG. 16 is a view showing another embodiment of the supporter in which the pedestal is sectioned in a state where it is installed on a guide rod,
17 is a view showing still another embodiment of the supporter,
Fig. 18 is an exploded perspective view of the hydraulic cylinder, the moving platform, the platform and the pedestal in the supporter shown in Fig. 17,
Fig. 19 is a view schematically showing a side view of the supporter shown in Fig. 17;

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, There will be. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 and FIG. 2 are views sequentially showing an embodiment of a roughing method according to the present invention, and FIG. 3 is a flowchart sequentially showing the method of drilling a rock wall according to the present invention.

In order to construct tunnels or mining oysters (hereinafter referred to as 'tunnels') for passing through railways, roads, waterways, sewers, etc., excavation works must be performed first. However, in order to proceed with the excavation work, it is necessary to determine the excavation range basically and to grasp the topography, the geology and the rocky condition of the excavation target 10. In particular, when the geology of the excavation target 10 is a rock, an excavation method for effective excavation should also be determined.

In the case where the excavation target section 10 should have no shock noise, and underground facilities such as railways and pipelines are located in the underground or adjacent areas of the downtown where precision and the like are required, the rock cut excavation method of the present embodiment is applied. Because the excavation method can be varied in the order of cutting depending on the ground condition and excavation range, it is necessary to accurately design and plan the range of the excavation target (10) and determine the cutting range and order of the rock in a corresponding form.

The rock cut excavation method (hereinafter referred to as "excavation method") of the present embodiment proceeds according to the following procedure.

S10; Verification of excavation range and rock cut range

The design values of the tunnels under construction, and the like are designed and designed so as to plan and design the range of the excavation target 10, the number of the rock cut sections within the range, the cut range per section, and the cutting order. In general, the excavation range is wider than the cross-sectional area of the target tunnel. When the cutting operation for the rock is completed, the inner surface of the excavation is closed with concrete or mortar, and the tunnel is completed according to the design value.

Therefore, before tunneling, the tunnel area at the time of completion is indicated by the tunnel display line GL on the rock wall surface of the excavation target 10 as shown in FIG. 1 (a), and the excavation range is indicated by the tunnel display line GL), so that the field worker can accurately grasp the excavation range through the rock wall cutting.

Subsequently, when the outline line 12 is displayed, division lines 13 and 13 'for dividing the cutout section in the outer line 12 are displayed as shown in Fig. 1 (b). The partition lines 13 and 13 'are like the outer line 12, and the operator cuts the rock of the rock wall along the partition lines 13 and 13'. The number of sections of the cut section may vary depending on the area of the excavation range and the excavation area.

The partitioning line 13 of this embodiment is radially formed toward the outer line 12 with reference to the center of the ground line G of the rock wall to be excavated so that the partitioning line 13 is inclined. Since the outline line 12 is a site where the rock is cut and excavated through the excavator artificially, it is necessary to prevent the rocks in the cutting section and the adjacent section from collapsing due to unstable arrangement and shape. Therefore, even if voids are formed by cutting the rock, the compartment line 13 is radially formed toward the outer line 12 with reference to the ground line G so that the rocks in the adjacent section form a taper.

S20; Perforation phase

1 (b), the rocks at the intersections between the outer line 12 and the division lines 13 and 13 'and the intersections between the division lines 13 and 13' are punctured to form the cutting holes 11 and 11 ' ').

The cutting holes 11 and 11 'may utilize a conventional boring mechanism such as a drill and have a sufficient diameter to allow insertion of the arm 110 of the excavator described below.

S30; Primary drill hole generation phase

The rock cutting uses an excavator disclosed in '10-1649328', which will be described in more detail.

4 and 5 are sectional views sequentially showing the operation of the excavator utilized in the rock drilling method according to the present invention, FIG. 6 is a front sectional view sequentially showing the operation of the excavator, FIG. 7 is a cross- And is a perspective view showing a state of a digging excavator excavated by an excavator.

4 (b), 4 (b) and 4 (a), in the excavation target 10, the outer line 12 and the division lines 13, 13 ' The number of cutting holes 11 and 11 'is formed so that the excavation range becomes quadrangular. In the present embodiment, the first cutting section is the central portion of the excavation range. This takes into consideration the formation of the division line 13 radially formed on the basis of the ground line G, and the subsequent cutting section proceeds sequentially to the left and right sides around the first cutting section.

When the cutting hole 11 is formed, a pair of towers 112 and 112 'formed in the excavator 100 are inserted into the two cutting holes 11a and 11b, respectively. At this time, a part of the wire saw L continuing to the conversion drums 113 and 113 'at the ends of the tow stands 112 and 112' is cut along the cutting holes 11a and 11b as shown in FIG. To be wired along the outer surface of the excavation target 10.

When the excavator 100 is installed on the excavation target 10 and the wiring of the wire saw L is completed, the main moving part 133 of the power source 130 is powered to cut the main drum 1333 And the wire saw (L) wired to the endless track starts cutting the contacted rock portion.

5 (a), the drive unit 135 of the power source 130 starts driving to move the power source 130 along the guide rail 120. As shown in FIG. The power source 130 moves away from the excavation target 10 and the length of the wire saw L contacting with the excavation target 10 is gradually shortened and the wire saw L contacting the excavation target 10 through the power saw 130, Cuts the section connecting the cutting holes 11a and 11b in the direction opposite to the moving direction of the power source 130 as shown in Fig. 5 (b) and Fig. 6 (b).

On the other hand, the towers 112 and 112 'inserted into the cutting holes 11a and 11b pull the wire saw L while maintaining the current position while the wire saw L is moving, (L) can move precisely only in a specified direction. Since the wire saw L is moved for cutting the rock only by the movement of the power source 130, the wire saw L is wound straight on the towers 112 and 112 'as shown in the drawing of FIG. 5 (b) As a result, as shown in Fig. 7, the side surface of the rock block 20 separated from the excavation target 10 by excavation forms a precise plane.

When the cutting line C is formed by cutting between the cutting holes 11a and 11b as shown in FIG. 6 (b), the other cutting holes 11c and 11d are provided with the towers 112 and 112 ' And the wiring and movement of the wire saw L proceeds according to the above-described procedure. As shown in FIG. 6 (c), the cutting lines of 11a, 11c, 11b, and 11d are paired to form cutting lines of four sides C) is completed.

Subsequently, pull tabs 112 and 112 'are inserted into cutting holes 11c and 11d, respectively, as shown in FIG. 6 (c) And the wire saw (L) portion connecting the wire saw (L) and the cutting line (C). When the wiring is completed, the power source 130 is moved to adjust the length of the portion of the wire saw L to be short, and the wire saw L is moved along the inner back surface as shown in FIG. 6 (d) So that the rock cutting is continued. As shown in FIG. 7, the hexagonal rock block 20 is separated from the excavation object 10, and through the primary excavation hole 21 (see FIG. 2 ).

The cutting to the inner rear surface is performed after all of the cutting lines C connecting the cutting holes 11a, 11b, 11c and 11d are formed. The cutting to the inner rear surface may be proceeded after first forming the cutting line C connecting the pair. 6 (b), a cutting line connecting the four cutting holes 11a, 11b, 11c, and 11d is first formed in a 'c' shape, May be inserted into each of the cutting holes in which the cutting lines are not formed, to carry out the above cutting operation.

For reference, in this embodiment, the arm 110 has the switching drums 113 and 113 'and the guide drums 114 and 114' for guiding smooth movement of the wire saw L, but the separate switching drums 113 and 113 ' 113 'and guide drums 114, 114', the wire saw L may slide the outer surface of the dividing table 111 and the tow stands 112, 112 '.

1 (b), the outer line 12 has a curved surface at the outer periphery of the tunnel display line GL. However, in the case of cutting the rock wall using the wire saw L, since a fine curved surface can not be formed , The outer line 12 is substantially in the form of a straight line outside the tunnel display line GL and after the cutting operation the inner surface of the excavating hole including the primary drilling hole 21 has to be flat.

S40; Subsequent drilling ball generation step

When the first cutting section is completed, the rock in the second cutting section, which is a subsequent cutting section, is cut with the excavator 100. The method of cutting rock through the excavator 100 and the order thereof are the same as those described above, and a description thereof will be omitted here.

The second cutting section creates a secondary drilling hole 22 as shown in FIG. 2 (b) through cutting the rock of excavator 100.

The first and second drilling holes 21 and 22 are centered in the excavation range, and subsequently excavate the cut section located on the left or right side to generate the excavation hole chainwise. In this embodiment, the third cutting section and the fourth cutting section located on the left side of the first and second drilling holes 21 and 22 are sequentially excavated to generate the third and fourth drilling holes 23. [

In the present embodiment, the first cutting section and the second cutting section are formed as an upper layer and a lower layer in the range of the partition line 13 connected to the end line from the outer line 12 with the ground line G as a starting point, For the sake of safety, the first cutting section located on the upper layer is preferentially cut.

S50; Drilling interior wall finish

8 is a view showing a finishing process of a tunnel excavated by the rock drilling method according to the present invention.

Through the above-described cutting process of the excavation target 10, the inner wall 31 of the tunnel hole 30 has an irregular surface as shown in Fig. 8 (a), or a section in which the surface is to be a curved surface. Therefore, as shown in FIG. 8 (b), a finishing material 32 such as concrete or mortar is applied to the inner wall 31 of the tunnel hole 30 to finish the tunnel line GL to a height at which the tunnel line GL is located. For reference, in the conventional blasting method, a blasting impact due to a charge explosion was transmitted to the outer periphery of the excavation as it was, resulting in cracks in the outer periphery of the excavation. These rock wall cracks could cause collapse of the rock wall to be excavated, and the completed tunnel could also be poor. However, in the cutting type rock wall excavation method according to the present invention, since the outer line 12 is first formed on the outer rim of the rock wall to be excavated and the rock cutting process is subsequently performed, there is no blasting shock diffused to the excavation outer side, The occurrence of cracks in the excavation outskirts is minimized.

For reference, the finishing material 32 hardens through a curing process. However, in order to perform continuous excavation, a continuous rock cutting process must be performed on the excavation target in the tunnel hole 30, and the minute vibration generated in such a cutting process may transmit a shock to the hardened finishing material 32 to cause breakage . Therefore, it is preferable that the finishing process using the finishing material 32 completes the cutting process for excavation or the finishing process is performed together with the cutting process from this point if the point to be cut has a sufficient distance from the finishing process target point .

Continue the excavation process by repeating the above process.

10 is a perspective view illustrating a guide rod inserted into an auxiliary hole of the rock drilling method according to the present invention, and FIG. 11 is a perspective view Sectional view showing a state in which the guide rod is inserted into the auxiliary hole while the guide rod is inserted.

The rock drilling method of the present embodiment is characterized in that the auxiliary holes 14 are formed between adjacent cutting holes 11 in parallel with the cutting holes 11 in order to increase the curvature of the outer line 12, And the guide rod 150 is inserted into the auxiliary hole 14. In this case, As shown in FIG. 9, the auxiliary hole 14 is formed at an arc position when connected to a neighboring cutting hole 11 as shown in FIG. 9 because the curvature of the outer line 12 is increased. It is preferable that the auxiliary hole 14 is formed deeper than the cutting hole 11 so that the wire saw L can move from the auxiliary hole 14 to the depth of the cutting hole 11. [

Meanwhile, the guide rod 150 includes an auxiliary roller 151 that rolls around the guide rod 150 as a center axis. The auxiliary roller 151 can be moved along with the rolling along the longitudinal direction of the guide rod 150 and the bearing 152 can be formed in the contact area with the guide rod 150 for smooth operation.

The auxiliary roller 151 draws the wire saw L which circulates rapidly, and the wire saw L moves to the switching drum 113, 113 'through the point where the auxiliary roller 151 is located. As a result, the auxiliary roller 151 is moved along the guide rod 150 as shown in Figs. 11A and 11B by the tension of the wire saw L, and the wire saw L is moved Cut the rock.

The guide rod 150 is connected to the supporter 140 fixed in the auxiliary hole 14. The guide rod 150 is connected to the supporter 140 and is fixed in the auxiliary hole 14. [

FIG. 12 is a cross-sectional view of the pedestal of the supporter in a state where it is installed on the guide rod, FIG. 13 is an exploded perspective view of the supporter, and FIG. 14 is a view showing a state in which the supporter is inserted into the auxiliary ball and operated.

The supporters 140 and 140 'of the present embodiment are installed in the guide rod 150 to stably support the guide rod 150 against the circulating vibration of the wire saw L pulled along the guide rod 150, So that the wire saw (L) is correctly pulled to the designated position.

To this end, the supporters 140 and 140 'include a hydraulic cylinder 141 fixed to the guide rod 150, a movable table 142 moved in the longitudinal direction of the guide rod 150 by the power of the hydraulic cylinder 141, And a platform 143 slidably slid under the power of the movable table 142 to ascend and descend.

The supporters 140 and 140 'have a shape corresponding to the inner surface of the cloth tool 11 for distributing the pressure of the platform 143 with respect to the inner surface of the cloth tool 11. The supporters 140 and 140' 144 ').

The hydraulic cylinder 141 includes a cylinder body 1411 whose one end is fixed to the guide rod 150 and a cylinder body 1411 whose one end is fixed to the guide rod 150. The hydraulic cylinders 141, And a piston 1412 that operates in accordance with the change. The hydraulic cylinder 141 must generate enough power to fix the guide rod 150 in the cloth tool 11 and controlled by a separate control device (not shown) from the outside. Since the structure and structure of the hydraulic cylinder 141 are well known, detailed description of the structure and structure is omitted. For reference, the hydraulic cylinder 141 is shown as the power source means for linear movement of the movable table 142 in the present supporters 140 and 140 ', but this is merely an example, and a pneumatic cylinder or the like may be used Of course, various mechanical devices such as a ball screw, a rack pinion, or a crank can also be implemented. However, in the following claims, all of the above-described embodiments are collectively referred to as a 'hydraulic cylinder'. In addition, if the movable base 142 is a means for linearly moving the movable base 142 along the guide rod 150, 'Hydraulic cylinder' is included in the range of equal.

The moving table 142 includes a moving table main body 1421 and a ramp 1422 formed at the upper end of the moving table main body 1421 to guide sliding of the table 143. The moving table main body 1421, And a pair of fences 1423 protruding from the guide rod 150 so as to cover both sides of the mobile body 1421 to prevent departure of the mobile body 1421. [ Here, the inclined path 1422 of the present embodiment is formed with a guide hole h, and the following insertion / removal part 1433 may be a protrusion inserted into the guide hole h. On the contrary, it is needless to say that the inclined path 1422 is a projection, and the guide hole h may be formed in the insertion slot 1433.

As a result, depending on the pressure received from the piston 1412 of the hydraulic cylinder 141, the movable table 142 linearly moves in the longitudinal direction of the guide rod 150. When the fence 1423 is configured, Stable movement without deviation.

The platform 143 includes a platform 1431 and an insertion slot 1433 formed at the lower end of the platform 1431 so as to engage with the ramp 1422. The platform 1412, And a stopper 1434 protruding from the front surface of the platform body 1431 to the guide rod 150 so as to limit the movement of the platform 150. [ The bottom surface 1432 of the platform body 1431 of the present embodiment has an inclined surface and the bottom surface 1432 can be in contact with the cylindrical guide rod 150 so that a curved surface can be formed in consideration thereof.

As shown in the figure, the moving table main body 1421 and the platform body 1431 of this embodiment are opposed to each other along the inclined surface, and the inclined path 1422 of the moving table 142 and the sparse portion 1433 of the platform 143 The sprocket 1433 engaged with the slant road 1422 of the moving stand 142 is moved in a slanting direction of the slant road 1422 so that the slant And is lifted by the pressure to lift the platform body 1431. At this time, a stopper 1434 is formed on the front surface of the platform 1431 so that the platform 1431 can be prevented from being raised by the inclined pressure without moving to the front.

14 (b), the base 144 of the supporter 140 comes into close contact with the inner surface of the cloth tool 11 while being separated from the guide rod 150, The pedestal 144 'of the other supporter 140' located at the opposite portion is also pressed by the pressure of the close contact so as to be brought into close contact with the other inner surface of the cloth tool 11. That is, the supporter 140 having the above-described constitution and structure is constituted only at one side of the guide rod 150, and the other opposing portion is composed of the supporter 140 'having only the supporter 1401 supporting the pedestal 144' The guide rod 150 can be fixed to the cloth tool 11 sufficiently.

The supporter 140 of the present embodiment includes a tension spring 134 having one end connected to the platform body 1431 and the other end connected to the guide rod 150 so as to pull the platform body 1431 against the hydraulic cylinder 141, (145).

The hydraulic cylinder 141 pushes the piston 1412 as shown in Fig. 14 (b) to raise the platform 143 and moves the piston 1412 ). At this time, the moving base 142 moves together with the movement of the piston 1412, and the platform 143 linked with the moving base 142 ascends and descends. When the movable table 142 pushes the platform 143, the platform 1431 blocked by the stopper 1434 can rise smoothly. However, when the movable table 142 is pulled up by the pulling of the piston 1412 The platform body 1431 engaged with the moving platform 142 can be moved in the direction of the hydraulic cylinder 141 together with the moving platform 142 without descending.

Therefore, the tension spring 145 exerts a tension force against the hydraulic cylinder 141 so that the platform body 1431 descends only in the position.

The tension spring 145 of the present embodiment may be connected to the guide rod 150 via a separate linker 1451. [

15 is a view showing another embodiment of the supporter.

The supporter 140 of this embodiment further includes a reference body STB for adjusting the stopping position of the platform 1431 by expanding and contracting with the stopper 1434 as a reference.

The reference body STB of the present embodiment is in the form of a bolt and is inserted through the stopper 1434. [ When the operator rolls the reference body STB such that the reference body STB faces the platform body 1431 as shown in Fig. 15B, the reference body STB presses the platform body 1431 And forcibly moves the position. As a result, the platform body 1431 is raised by sliding the platform body 1421 by pushing the reference body STB.

Therefore, as compared with the case where the reference body STB does not push the platform body 1431 as shown in FIG. 15 (a), the reference body STB can be positioned on the platform body 1431 When the pushing-up operation is started, the initial position of the platform 1431 starts at a relatively high position, so that the supporter 140 in the drawing of FIG. 15 (b) can be utilized in the cloth tool 11 'having a larger inner diameter.

Although the reference body STB is in the form of a bolt passing through the stopper 1434 in the present embodiment, various modifications can be made within the scope of the following rights as long as the mechanism is capable of an artificial stretching adjustment.

FIG. 16 is a view showing another embodiment of the supporter in which the pedestal is sectioned in a state where it is installed on a guide rod.

The elevator base main body 1431 of the present embodiment includes a platform main body 1431 'constituting an insertion slot portion 1433 and a hoisting frame 1431' rotatably connected to the hoisting frame first main body 1431 ' 2 body 1431 ".

The cloth tool 11 into which the guide rod 150 is inserted has a uniform curved shape, but a curved or inclined surface may be formed depending on a rock wall material or a rock wall change after the perforation. In this case, if the relatively large area pedestal 144 covers the curved or inclined surface to support the guide rod 150, the guide rod 150 will deviate from the planned direction in the cloth tool 11 It may be arranged obliquely, and there may be a problem that precise rock cutting can not be achieved through this.

The pedestal 144 is rotatably connected to the platform body 1431 so that the pedestal 144 is rotated in accordance with the bent inner surface of the cloth tool 11, 11 are arranged along the longitudinal direction of the cloth tool 11 and are arranged accurately.

17 is an exploded perspective view showing another embodiment of the supporter, Fig. 18 is an exploded perspective view of a hydraulic cylinder, a moving platform, a platform and a pedestal in the supporter shown in Fig. 17, Fig. 19 is an exploded perspective view of the supporter Fig.

The supporter 140 "of the present embodiment includes a hydraulic cylinder 141 fixed to the guide rod 150, a movable table 142 which is moved by the power of the hydraulic cylinder 141 and moves in the longitudinal direction of the guide rod 150, A pedestal 143 having a shape corresponding to the inner surface of the cloth tool 11 and having a first and second pedestals 144 and 144 covering the platform 143, The first and second supporters 144 and 144 are rotatably connected to the first support 144 of the first supporter 144. The first and second supporters 144, And a second piece 1461 'having one end rotatably connected to the second pedestal 144' of the second supporter and the other end rotatably connected to the other end of the first piece 1461, And an elastic spring 145 'for applying tension to the first piece 1461 and the second piece 1461. The supporter 140 "of the present embodiment includes a hydraulic cylinder 1 And a stopper 1434 protruding from the front surface of at least one of the platform bodies of the first supporter and the second supporter to the guide rod 150 so as to restrict the movement of the platform 143 in response to the pressurization of the guide rods.

Therefore, when the moving table main body 142 receiving the power of the hydraulic cylinders 141 of the first and second supporters moves and presses the table 1431, the table < RTI ID = 0.0 > 1431 & As well as the pedestals 144 and 144 ', which are coupled to the platform body 1431, are raised as well. At this time, the pedestals 144 and 144 'of the first and second supporters are connected to each other by the connection frame 146, and are constantly urged in the direction of the guide rod 150 by the elastic spring 145' The platform body 1431 of the 1,2 supporter always comes into close contact with the moving base body 1421 regardless of whether the moving base body 1421 is moved or not and the moving base body 1421 and the platform body 1431 are mutually A stable coupling state can be maintained even if a direct coupling structure is not achieved.

One end of each of the first and second parts 1461 and 1461 is rotatably connected via pedestals 144 and 144 'and hinge pieces 1463 and 1463' 1461 ') are rotatably connected via a hinge shaft 1462. [

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10; Excavation objects 11 and 11 '; Cutting hole 12; Outline line
13, 13 '; Compartment line 20; Rock block 21; Primary excavator
22; Second drilling hole 23; 3rd and 4th drill holes 30; Tunnel ball
31; Inner wall 32; Finishing material
100; Excavator 110; cancer
111; Partitions 112 and 112 '; Tow bars 113 and 113 '; Conversion drum
114, 114 '; A guide drum 120; A guide rail 121; Guide body
122; Rack 123; Connecting rails 130; Power source
131; Base 132; A power section 133; Main eastern part
134, 134 '; A tow portion 135; A traveling section 136; Roller portion
140, 140 '; Supporters 141; Hydraulic cylinder 1411; Cylinder body
1412; Piston 142; Mobile station 1421; Movable body
1422; Ramp 1423; Fence 143; Elevator
1431; A platform frame 1432; Bottom 1433; Shovel
1434; Stoppers 144 and 144 '; Pedestal 145; Tension spring
145 '; Elastic spring 146; A connection frame 1461; Part 1
1461 '; Part 2 1462; Hinge shafts 1463 and 1463 '; Hinge
GL; Tunnel mark G; Ground line

Claims (8)

A confirmation step of displaying an outline line which is a rock cut display and a division line which is a division mark of a cutout section in the outline line; A perforation step of perforating the intersection of the outline line and the division line and the intersection between the division lines to form a cutting hole; And a digging hole forming step of excavating and removing the rock along the outline line and the dividing line to produce a digging hole,
Inserting a drawbar of an excavator using a wire saw into the cutter to circulate the wire saw along an outer line or a section line and cutting the rock surface to form a cut line;
And a guide rod is inserted into the auxiliary hole, the guide rod is rolled around the guide rod as a center axis, and is guided to the auxiliary hole through the pull- An auxiliary roller for guiding movement of the wire saw;
A supporter including a hydraulic cylinder fixed to the guide rod, a supporter including a movable base which is received in the power of the hydraulic cylinder and moves in the longitudinal direction of the guide rod, and a platform which slides slopingly under the power of the movable base and descends, The guide rod being fixed to the auxiliary ball;
A rock cut excavation method characterized by. The method according to claim 1,
And an excavating inner wall finishing step of finishing the inside wall of the excavation hole formed in the excavating hole forming step with a finishing material
A rock cut excavation method characterized by. The method according to claim 1,
Wherein in the confirming step, the partition line is radially formed toward the outer line with respect to the center of the ground line of the rock wall to be excavated, so that the outer line is inclined. The method of claim 3,
In the confirming step, dividing the ground line into upper and lower layers within a range of a section line connected from an outer line to an end point to form a plurality of cut sections;
Generating a drilling hole by first cutting the cut section located in the upper layer in the drilling hole generating step;
A rock cut excavation method characterized by. The method according to claim 3 or 4,
Wherein the step of generating the excavation hole comprises the steps of: excavating a cut section located at the center of the center to create a first excavation hole; excavating the excavation hole sequentially in a cut section located on the left or right side of the first excavation hole; The method comprising the steps of: delete delete delete

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