JPS62268492A - Method of tunnel execution - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a tunnel construction method.

[Conventional technology].

In tunnel construction, the excavation method is selected from full-section construction method, bench-cut method, etc., taking into account the self-supporting face, the bearing capacity of the ground, etc. However, no matter which excavation method is adopted, Different machinery and equipment are used for each type of work. Most of these mechanical devices are individually equipped with a drive source such as an engine, and are replaced at a predetermined position on the face each time the type of work changes. Furthermore, in the long bench method and the short bench method, each of the above-mentioned mechanical devices for the upper half section and the lower half section are required to be used separately, at least for simultaneous construction of the upper and lower ratios, so twice the number is required. .

[Problems to be solved by the invention] Preparing separate mechanical devices for each type of work and replacing and resetting a large number of mechanical devices each time it is used requires a huge amount of equipment (JIT costs). In addition to this, it makes the mine complex, worsens the working environment, and lengthens the time required for one cycle of face work (drilling, blasting, pouring, shotcrete, rockporting, etc.).

In addition, it is desirable to select the most appropriate tunnel excavation method for each section according to the geological conditions, that is, to change and select the full-section method and the bench-cut method as appropriate. Most of the mechanical equipment has different standards and cannot be used interchangeably, so it is necessary to have two models compatible with each construction method, which significantly reduces the operating rate of the mechanical equipment.

The present invention relates to a tunnel construction method proposed for the purpose of solving these problems.

[Means for solving problems]

The configuration of the present invention adopted to achieve the above object will be explained based on examples as follows.

Generally speaking, the present invention is a tunnel construction method using a first gantry A, a second gantry B, and a self-propelled transport vehicle C, in which the first gantry A is transported by a self-propelled vehicle C. The process of installing the face at a predetermined position and carrying out work such as drilling and charging, and the process of transporting the second gantry B by the same self-propelled vehicle C, installing it at the predetermined position of the face, erecting shoring, and spraying. This includes the process of performing primary lining with concrete, rock bolts, etc.

The first gantry A has a machine frame installed on a barrel (a), and the machine frame is equipped with, for example, rock drills 11c movable back and forth on the left and right of the upper stage and in the center of the lower stage, and the work for charging etc. is carried out in the center of the upper stage. Scaffold d is also equipped to move forward and backward.

In the second gantry B, a machine frame f is established on a barrel a, and a spraying robot g and a support erecting erector h with a rock drill are equipped on the upper stage of the machine frame R so that they can move forward and backward. At the same time, charging decks i are installed on the left and right sides of the middle row so that they can move forward and backward, a dust collector j is installed in the center of the latter half of the upper row, and a curtain device k is installed around the dust collector j, The machine is equipped with a blower l, quick setting agent adult device, air dryer n1 mortar mixer 01 mortar pump p, etc.

The self-propelled transportation vehicle C connects a tractor head q and a low-floor chassis r that is U-shaped in plan, and the low-floor chassis r
The inner frame S, which also has a U-shape in plan, is mounted on the inside of the frame so as to be vertically movable. This self-propelled vehicle C is the first. The inner frame S is engaged and supported by the pallets a and e of the second gantry A and B, and the first. The second gantry A and B can be loaded and transported to the required location.

[Effect]

According to the present invention, the first gantry A is equipped with a plurality of rock drills C along with a work scaffold d for charges etc. in the upper and lower stages or in the upper, middle and lower stages, so that they can move forward and backward, respectively. By appropriately selecting and deciding which level of rock drill C to use and where to move forward and backward, it is possible to use the full section method, bench cut method (especially seat bench method, and bench length of about 5 m). (Mini Benche method) can be freely selected and modified depending on the construction area.

In addition, since the second gantry B is equipped with various equipment necessary for shoring erection and primary lining, it eliminates the trouble of replacing and setting machinery for each type of work, and makes it easier to achieve the desired results. Can perform shoring erection and primary lining.

Moreover, at that time, the face is partitioned by a curtain device k, which prevents dust from scattering into the rear space of the mine, and prevents dust from being collected.
Very efficient (can collect dust).

Moreover, the above 1. The second gantry A, B can be easily exchanged by a self-propelled transportation vehicle C, and this self-propelled vehicle C is not used during the above-mentioned drilling and charging work, or during the primary lining. , it can also be used for other conveyance operations inside the mine.

That is, according to the present invention, the number of mechanical devices equipped with a drive source such as an engine can be extremely reduced.

〔Example〕

The present invention will be described below with reference to the illustrated embodiments.

The first gantry A is a machine constructed from a plurality of supports 1, upper and lower beams 2, 2, and necessary reinforcing materials 3, etc. on a barren (a) with a flat, reverse convex shape and a rectangular plane. The frame is equipped with a plurality of known rock drilling machines C and a known working scaffold d for charges, etc., which can move forward and backward.

4.5.6 is a slider with an approximately H-shaped cross section that is mounted in parallel on the left and right on the sleeper 7 that spans between the left and right upper beam members 2.2, and these sliders are 4° 5.6 A hydraulic motor 9 with a reducer installed in a sleeper 7 moves a sprocket 1 through a guide plate 8 equipped with a bearing.
When rotated, it is pulled by the chain 11 and slides in the longitudinal direction of the chain 11.

12, 13.14 are flat carriages fitted into the upper half projections of the sliders 4, 5.6, and each carriage has wheels 15.14 pivotally supported on its left and right sides. The bearing 16 is attached to the upper half rail of the slider 4, 5.6 at 4°, 5".

61, and when the sprocket 18 is rotated by the hydraulic motor 17 with a reduction gear mounted on each carriage, the carriage is pulled by the chain 19 in the front-rear direction.

Of the above-mentioned carriages, the upper rock drill C is mounted on the carriages 12 and 14 on both sides, and the work platform d for charging and the like is mounted on the central carriage 13, respectively.

Therefore, the rock drill C and the work platform d have the designed sliding lengths of the sliders 4, 5.6, and the carriages 12, 13.
The vehicle can move forward and backward within a total length of 14 designed travel lengths.

Reference numeral 20 denotes a rail on which the rock drill C is mounted on the lower stage of the machine frame so that it can move forward and backward. This rail 20 is the upper half rail portion of the slider 4, 5.6 at 4°.

It has the same cross-sectional shape as 5゛ and 6゜, and the left and right lower beam members 2,
A carriage 21 is installed parallel to these in the center of the two spaces.
It runs within the rail 20 in the same configuration and manner as the carriages 12, 13, and 14 described above.

The rock drill C in the lower stage is mounted on its carriage 21 and moves back and forth as the carriage 21 travels.

Note that this lower-stage rock jackhammer C also uses the rail 20 as a slider, and similarly to the upper-stage rock drill C, it is designed to move forward and backward within the total length of the sliding length of the slider and the running length of the carriage 21. You may also do so. In addition, the jackhammer is not limited to the upper and lower two stages, but the upper and middle stages as necessary.

Sometimes it is equipped in the bottom three tiers.

Reference numeral 22 denotes vertical movement devices such as outriggers, jacks, etc. provided at at least the four front, rear, right, left, and right corners of the machine frame, which adjust and set the height of the first gantry A at the installation location, such as the face, as appropriate.

23 is a device for receiving a reaction force such as an outrigger that is foldably attached to the lower surface of the front end of the slider 4, 5.6, and the slider 4 is
, 5.6, the cross-sectional shape can be made as small as possible.

The second gantry B is constructed from a plurality of supports 24 and upper and lower beams 25, 25 on a pallet e with a flat, reverse convex shape and a rectangular plane. It is equipped with mechanical equipment for each type of work required for primary lining.

26, 27, and 28 are sliders with a roughly H-shaped cross section that are placed in parallel on the left and right on a plurality of pillow timbers 29 spanning between the left and right upper beam members 25 and 25. Lt
In the same way as the sliders 4, 5.6 in 1 unit A, when the sprocket 32 is rotated by the hydraulic motor 31 with a reducer installed in the sleeper 29 inside the guide plate 30 with internal bearings, the chain 33 It slides back and forth as it is pulled by.

34, 35, 36 are flat carriages fitted into the upper half projections of the slider 26, 27, 28, and each carriage, like each carriage 12, 13, 14 of the first gantry A,
Wheels 37 and bearings 38 supported on the left and right sides of the upper half rails 26°, 27° of the slider 26, 27, 28,
28'', and when a sprocket 40 is rotated by a hydraulic motor 39 with a reduction gear mounted on each carriage, the carriage is pulled by a chain 41 and runs in the front-rear direction.

Of the above-mentioned respective carriages, a well-known spraying robot g is mounted on the central carriage 35, and a similarly well-known shoring erecting robot h with a rock drill is mounted on the carriages 34 and 36 on both sides.

Therefore, these robots g and erector h have the designed sliding length of the sliders 26, 27, 28 and the carriage 34.
It can move forward and backward within the total design travel length of 35.36.

The slider 27 on which the robot g is mounted is set to slide on the front half of the top surface of the machine frame f. A known dust collector j is installed between the sliders 26 and 28.

42 and 43 are sliders with an H-shaped cross section installed on the left and right sides of the middle stage of the machine frame f, and are mounted on arm rods 44 protruding from the outer surface of the middle part of each support 24 in the same manner as the sliders 26, 27, and 28 (therefore, Also, the sliders 4, 5 of the first gantry A.
6), that is, when the sprocket 47 is rotated by the hydraulic motor 46 with a reducer fixedly supported on the machine frame f side in the guide plate 45 in which the hair ring is installed, the sprocket 47 is pulled by the chain 48 and moves forward and backward. slide.

49 and 50 are flat plate-like carriages fitted into the upper half of the slider 42 and 43, and each carriage is connected to the carriage 3 above.
4.35.36 (therefore, the sliders 4, 5.6 of the first gantry A are also operated in the same manner), that is, the left and right side wheels 51. Bearing 52 to slider 4
It runs guided by the upper half rail part of 2.43.
When the sprocket 54 is rotated by a hydraulic motor 53 with a reduction gear mounted on each carriage, the carriage is pulled by a chain 55 and is carried out in the front-rear direction.

A known charging deck i is mounted on these carriages 49 and 50. Therefore, this charging deck i can move forward and backward within the total length of the designed sliding length of the slider 42.43 and the designed running length of the carriage 49.50.

k is a curtain device, which surrounds the dust collector IBj and stretches a curtain between the dust collector j and the circumferential surface of the mine to prevent concrete dust from scattering behind the dust collector j. The structure is as follows.

56 is a collection! ! A left and right undulating pivot rod whose base end is rotatably supported on the outer end mounting plate 29° of the sleeper 29 protruding to the left and right outer sides of the machine j, 57 is on the left and right outer ends of the sleeper 29. The horizontal member 5 is a hydraulic cylinder whose base end is pivotally supported so as to be able to move up and down.
By the extending and contracting operations ', the left and right erecting rotation rods 56 are erected and rotated between an upright position perpendicular to the slider 26, 28 and a down position parallel to them.

59 is a horizontal rotation rod whose base end is horizontally rotatably supported below the base end shaft fulcrum of the left and right undulating rotation rods 56; 60 is a hydraulic cylinder whose base end is supported on the upper beam member 25; The tip of the piston loft 60'' is pivotally supported by the horizontal rotation rod 59, and by the expansion and contraction movement of the piston loft 0', the left and right horizontal rotation rods 59 are moved to a position perpendicular to the slider 26.28. It rotates horizontally to open and close between the horizontal and parallel positions.

61 is a rotary shaft rotated by a hydraulic motor 62 fixed to the base of the left and right horizontal rotation rods 59;
It is supported in parallel with 9.

63 is a curtain stretched between the upper ends of the left and right undulating rotation rods 56, 64 is a curtain stretched between the undulation rotation rod 56 and the horizontal rotation rod 59, and 65 is a curtain that can be wound around the rotary shaft 61. The curtain 66 is an auxiliary rod attached to the center of the curtain 64.

In the curtain device having the above structure, the curtain 63. 64.65 is molded so that the outer shape matches the inner peripheral surface of the tunnel as much as possible.

Reference numeral 67 denotes vertical movement devices such as outriggers, jacks, etc. provided at at least the four front, rear, right, left, and right corners of the machine frame f, and the height of the second gantry B at the installation location such as the face is adjusted and set as appropriate.

2 is a spray machine, m is a rapid setting agent device, n is an air dryer, 0 is a mortar mixer, p is a mortar pump,
These l-p are all publicly known and are installed on the lower stage of the machine frame f, that is, on the valley/toe e.

The self-propelled transportation vehicle C connects the tractor head q and a flat U-shaped low-floor chassis with an open rear side, and has a flat U-shaped flat chassis with an open rear side inside the low-floor chassis. An inner frame S having a rectangular cross section is mounted so as to be vertically movable.

That is, the inner frame S includes a plurality of hydraulic cylinders 6 whose base ends are attached to a plurality of required locations on the low-floor chassis r.
It is connected to the piston loft 69 of No. 8 via a connecting rod 70, and horizontally moves up and down by the required height by the expansion and contraction movement of the piston loft 9.

This self-propelled conveyance vehicle C moves backward and moves the inner frame S from the open rear side to the 1st, 2nd gantry A,
By inserting the pallets under the pallets a and e of H and moving the inner frame S upward, the first and second gantry platforms A and B
can be carried to the desired installation location, and the inner frame S
1. Move down once. By lowering the second gantry A, B to the ground and moving forward, the inner frame S can be released from the pallets a, e.

The upper work 1, the two first drilling and charging gantry A are each transported separately by a self-propelled transportation vehicle C, and placed side by side on the left and right at a predetermined position at the face, and the vertical movement device 2
2, set the height appropriately. Next, place each rock drill C at the required position, that is, align all the rock drills C in the full section method, or move each rock drill C back and forth as appropriate in the bench cut method. A predetermined drilling operation is performed according to the bench length of the short bench method or mini bench method, and the predetermined charging operation is performed by moving the work platform d back and forth appropriately (see Fig. 3).

In the above, the rock drill C and the work platform d are the carriage 1
2.13.14.21 running and slider 4.5.6
Since the front and rear positions can be freely set by sliding, it is possible to easily match the position to the optimum position for the selected excavation method or the excavation method for changing the construction area.

2. A container (not shown) having the required configuration that allows loading and unloading using the inner frame S is mounted on the self-propelled vehicle C for rolling out transportation, and a well-known Rogue (not shown) is mounted on the container. ) to load the shear and shift the face.

3. Erecting the shoring and primary lining The second gantry B is transported by the self-propelled transport vehicle C, lowered to the designated position of the face, and its height is adjusted appropriately using the vertical movement device 67. Next, the shoring is installed. Erector h for construction work,
For spraying, use robot g, charging deck i, carriages 34, 36, 35, 49, 50 travel and slider 26.
．． 28. 27. 42. Move back and forth as appropriate to erect the shoring, and perform primary lining with concrete, rock bolts, etc. when spraying. Especially when spraying concrete, use a curtain device. By using k, it is possible to prevent dust from scattering to the rear of the mine.

4. Secondary lining After the primary lining is stabilized, a secondary lining is performed using a known method, that is, using forms, concrete pumps, mixer trucks, etc.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, by transporting and installing the two devices, the first gantry and the second gantry, at a predetermined position on the face using a self-propelled transport vehicle, drilling and
Charge, shoring erection, and spraying can be carried out for each type of work such as concrete and rock porting, and unlike in the past, machinery and equipment appropriate for each type of work are transported and installed separately. Unlike conventional methods, it does not complicate the mine and does not worsen the working environment.
Cycle time can be reduced.

On the first gantry, multiple rock drills can be mounted on the upper, lower, or upper level.
Since the middle and lower tiers are equipped so that they can move forward and backward, you can select and decide which tier the jackhammer will be used for and where it should move forward and backward, allowing you to drill across the entire cross section. This allows you to freely select the construction method and bench method (particularly the short bench method and mini bench method) and change the construction area. In comparison, the operating rate of machinery and equipment can be significantly improved.

In addition to mechanical equipment for each type of work, the second gantry is equipped with a curtain device, which allows concrete to be sprayed while the working face is partitioned, scattering dust to the rear of the mine. Dust can be collected efficiently without any waste. The curtain device described above is not limited to the one in the embodiment, and may be an air curtain, for example.

In addition, as a self-propelled vehicle for transportation, a vehicle with a low floor chassis connected to a tractor head is used, so the first. Second
The height of the gantry is sufficient, and this self-propelled transport vehicle can be used not only to transport the first gantry or the second gantry to a predetermined position at the face, but also to transport containers for sliding out. Since the number of mechanical devices with drive sources in the mine can be reduced, it is economical and has the effect of not polluting the working environment.

[Brief explanation of drawings]

The drawings are for explaining examples of the construction method of the present invention.
Figure 1 is a side view of the first gantry mounted on the self-propelled transport vehicle II, Figure 2 is a front view of the first gantry lowered to the ground, and Figure 3 is the installation on the face. FIG. 4 is a front view of the same as above, FIG. 5 is a schematic plan view of the first gantry, FIG. 6 is a side view of the slider and carriage portion of the first gantry, and FIG. The figure is a longitudinal cross-sectional view of the same as above, Figure 8 is a cross-sectional view of the main part showing the fitted state of the carriage to the upper half rail of the slider, No. 9ryJ is a plan view of the self-propelled transportation vehicle, and Figure 10 is the same as above. A front view of the main parts, Fig. 11 is a side view of the second gantry installed on the face, Fig. 12 is a front view of the same as above, Fig. 13 is a schematic plan view of the second gantry, and Fig. 14 is a side view of the second gantry installed on the face. A side view of the slider and carriage parts in the second gantry, FIG. 15 is a vertical sectional view of the right half of the same as above, FIGS. 16 to 18 are perspective views of the curtain device part of the second gantry, and FIG. 19 is same as above. FIG. a...Pallet, b...Machine frame, C...
...Jackhammer, d...Work scaffolding for charges, etc., A
...First gantry, q...Tractor head, "...Low floor chassis, C...Self-propelled transportation vehicle, e...... ·palette,"······
Machine frame, g...Robot spraying, h...
Erecta-1i for shoring erection with rock drill...
Charging deck, j... Dust collector, k...
... Curtain device, l... Spraying machine, m...
...Accelerating agent injection device, n...Air dryer, 0...Mortar mixer, p...
・Mortar pump. Figure 7; ￥-Figure 8 O Figure 9 ℃ Off Figure 0 Off Figure 4 Off Figure 5 Off Figure 6 Procedural amendment June 12, 1986 Director General of the Patent Office Uga Michibe 1, Patent application for indication of case Showa 61-109638 No. 2, Name of the invention Tunnel construction method 3, Relationship with the amended case Patent applicant Tobishima Construction Co., Ltd. 4, Agent ■105 18-11 Shinbashi-chome, Minato-ku, Tokyo - Matsu Building Spontaneous 6. Detailed description of the invention and drawings in the specification subject to amendment. 7. Contents of amendment (1) “Doni” in line 13 of page 2 of the specification was changed to “toni”
Accordingly, "Ki-concrete" in the 6th line of the 3rd page is amended to "Ke-concrete", and "bench cut" in the 10th line of the same page is amended to "bench cut". (2) In the same book, page 4, line 20, "spraying machine l" is corrected to "spraying machine!" (3) In the same book, page 6, line 5, "Moreover" is amended to "Furthermore." (4) Page 13, lines 21 and 22, page 14, line 6.
8.11゜line 13, page 15, line 14, rsJ
Correct to. (5) rcJ on page 14, line 21 and page 15, line 1 of the same book
is corrected to "C". (6) Correct the drawings in Figures 1, 9, and 11 as shown in the attached sheet (correct the symbol rgJ in the lower right corner of each figure to rqJ). (7) Correct the drawings in Figures 2 and 4 as shown in the attached sheet (correct the symbol rsJ at the bottom of each figure to "s"). (8) Figure 18 of the drawings will be amended as shown in the attached sheet. (l QS Figure 4

Claims (1)

[Scope of Claims] 1. A machine frame is set up on a pallet, and a plurality of rock drills are installed on the upper and lower stages of the machine frame, or on the upper, middle, and lower stages, and a work scaffold for charging, etc. is installed on the upper stage. The first gantry, each of which is equipped to move forward and backward, is transported by a self-propelled transport vehicle consisting of a tractor head and a low-floor chassis, installed at a predetermined position at the face, and drilled, charged, etc. In the process of carrying out the work, a machine frame is also established on the pallet, and a spraying robot and a shoring erection erector with a rock drill are installed on the upper stage of the machine frame.
In addition, a charging deck is installed in the middle stage that can be moved forward and backward, and a dust collector is installed on the upper stage, and a curtain device is installed around this dust collector, and a sprayer and quick-setting agent are placed in the lower stage. equipment, air dryer,
The second gantry, which is equipped with a mortar mixer, mortar pump, etc., is transported by the self-propelled vehicle, installed at a predetermined position at the face, and erected the shoring and shotcrete.
A tunnel construction method comprising the step of performing primary lining such as rock bolts while the face is partitioned around the dust collector by the curtain device.