KR20190025583A - The Excavation method applied by combination of Directional Drilling with Linear Wire Cutting. - Google Patents

Abstract

According to the present invention, when bedrock is excavated, in a situation in which drilling, charging with gunpowder, and blasting that are the most universal and effective method cannot be performed, and there is a shortage of economic feasibility, there is no vibration, noise, dust, and scattering, caused by blasting. Moreover, there is no excessive and spare excavation, and there is no damage to mother rock, caused by blasting, to introduce and expand a directional drilling method for minimizing support and reinforcement of a cut bedrock surface. Therefore, a wire saw and a pulley device are inputted into an expanded drilling hole to cut bedrock along a directional drilling hole.

Description

Technical Field [0001] The present invention relates to a rock excavation method using a combination of a directional control drill and a lath cutter.

The present invention relates to excavation of various kinds of rocks necessary for tunnel (general construction (construction, traffic, environment, etc.), vertical straightening, basic foundation installation, tearing, rock slope excavation and reinforcement. More specifically, blasting vibration caused by blasting of rock excavation and air blast, fly rock, and dust are generated around excavated rocks, Noise, scattering, dust and the like so as not to be propagated by cutting the entire outer circumferential surface of the excavation so as to reduce propagation of the excavation.

In the present invention, a direction control borehole method and a cutting method using a wire saw are introduced and applied to prevent the rock portion from being polluted (vibration, noise, dust, scattering) and being damaged by the explosive force of the explosive, This is the subject of the rock excavation method which was developed for the most economical reinforcement and conservation.

[Patent Document 1] JP-A-10-193259 (Patent Document 1) Rock cutter for tunnel excavation and cutting method. Chang Pyeong Construction Co., Ltd. [Patent Document 1] Japanese Patent Application Laid-Open (JP-A) No. Hei 10-1508205. Fixed jig device for tunnel excavation using wire saws. Korea Railroad Research Institute [Patent Document 1] Japanese Patent Application Laid-Open (JP-A) No. Hei. A forward jig device for tunnel excavation using wire saws. Korea Railroad Research Institute [Patent Document 1] Japanese Patent Application Laid-Open (Kokai) Tunnel excavation system using perforation, wire, push method. Chang Pyeong Construction Co., Ltd. [Patent Document 1] Japanese Patent Application Laid-Open (JP-A) No. Hei 10-1774439. Blasting vibration reduction excavation method using vibration - proof cutting line and core springs. 10-1395828. Hajyung Engineering [Patent Document 1] Japanese Patent Application Laid-Open (JP-A) No. Hei 10-1649328. Rock excavator and excavation method using it. 10-1395828. Kim Hyo Sung [Patent Literature 7] European Patent (B1) EP2 783823. Improved wire saw for conducting an endless diamond wire. Norway. 10-1395828. Applicant Diamant Wire Teknikk AS.

title ; Wire cutting as a complement to drill and blast in vibration sensitive environments author ; NILS GUSTAFSSON belong ; CHALMERS UNIVERSITY OF TECHNOLOGY. Goeborg, Sweden Date: 2010 title ; Study of wire sawing for deposition tunnels author ; Rolf Christiansson, Tomas Lehtimaki, Stig Pettersson Constructor; Svensk Karnbranslehant AB. Mats Olsson, EDZ consulting Date: March 2014

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a free surface between excavation tunnels and protectors using a wire saw, The present invention is to provide a tunnel excavation method for cutting a part of an outer circumferential surface of a tunnel to reduce blasting vibrations, which can reduce the propagation of blasting vibration to a barycenter existing in the vicinity of the excavation tunnel.

The applicant has filed a number of applications by a minority of applicants such as the Korea Railroad Research Institute, Jangpyeong Construction Co., Ltd., and Haegye Engineering Co., It is a mechanical device construction and cutting method of a saw, and the claim is made for the main purpose of reducing the vibration of the blasting mainly by introducing blasting after cutting the rock (pre-cutting).

According to the non-patent documents of overseas countries, GUSTAFSSON, a master's dissertation submitter in the 'CHALMERS UNIVERSITY OF TECHNOLOGY, Department of Civil and Environmental Engineering Division of GeoEngineering' in Sweden, said that "cutting as a complement to drill and blast in vibration sensitive environments. " In his paper, it is already known that in the Nordic countries such as Sweden, after the cutting of the rock as a perforation and wire saw after the cutting of the rock, the method of engaging in the blasting is becoming more common and maturing.

Having confirmed the literature directly related to overseas patents and related patents, the most relevant part of this patent is the patent application "783823 B1" filed by Norway's Wire Technik AS on March 23, 2013. Improved wire saw for conducting an endless diamond wire. " This patent was applied directly to Stockholm City (Stockholm City, "Orrstorom" in the City Line railway project) between 2011 and 2012 and applied for a patent. The case of wire saw used for the excavation works is described in detail .

In March 2014, the non-patent document "of wire sawing for deposition tunnels" was published, and since "783823 B1" was published on March 23, 2013, only patents that imitated this in Korea and partial details without great utility value A number of patents have been filed and registered without review, with reference to the above mentioned documents. However, both the overseas patent and the domestic patent are not patented to the wire saw itself, or the level of the auxiliary means of blasting is beyond the level of excluding the blasting.

Although various inventions of domestic and foreign patents and technical literature have been widely collected, it has not been possible to confirm a patent applied for a cutting and excavating method as a pure wire saw.

The existing invention is limited to the method of cutting the rock by cutting the rock with the perforation and the wire saw of the small hole and forming the 5 free sides and the other side connected to the rock by drilling, charging and blasting, reducing vibration and noise However, there is no way to excavate completely from the rock by forming 6 free sides in the rock section without perforation, loading, and blasting.

The present invention attempts to solve the existing problems by three apparatuses and methods. In order to accomplish the above-mentioned technical object, the present invention proposes a non-blasting excavation method which does not involve blasting for the source blockage of a blast hole (vibration, noise, dust, scattering).

Equipment used in the present invention is a rock drill, a device that forms a 5-free surface with a rock cutter, a directional drilling (Directional Core Drilling) when there is a curved line such as a long drilling extension, A device for precise drilling by controlling the direction of drilling according to a linear shape using a device, and a lanyard and a pulley device for cutting a rock are used. If the lanyard and pulley unit is larger than the first borehole, the lanyard and pulley unit is expanded by enlarging the ball.

 Wire saws and pulleys run along the borehole to cut the planned area in the rock. When the cutting is completed, if the length of the space in the rock is short, a completely separated inner space is formed with 6 free sides.

In the present invention, a small hole is drilled to make a space by cutting a rock with a wire saw. When it is necessary to check the ground condition at the time of drilling, a core drilling is carried out, Directional core drilling is performed when linear orientation or artificial directional translation is required to achieve the intended purpose. The first advanced hole is enlarged to enlarge the original perforation to locate a predetermined line saw and a pulley and a guide to guide it in the rock to be cut.

In the present invention, the rock is cut with a pulley, a guide, and a wire saw along an enlarged perforation to form a rock surface by forming five free surfaces.

If the cutting section is long, 4 free side cuts of the string are combined with 1 free side of the working surface to form 5 free sides and the other side is connected to the rock.

This side is further cut with a line saw (Wire saw) at a right angle to the direction of the excavation. As an additional method at this stage, a hydraulic cylinder is used to shear one side of the rock and completely isolate it from the base rock to form a space in the rock.

The rotational force of the wire sawing machine and the length of the hook are limited. If the cut section is short, the 4 free-side cuts of the string are added to the 2 free sides of the start point and the end point to form 6 free sides. Therefore, the 6 free-side cut sides are completely separated from the base rock, .

When the length of the space in the rock is long, the rock is cut by the string, and the rock is formed on the 5 free sides. However, since the surface attached to the rock is present, it is difficult to remove the rock that has been cut into 5 free sides.

In the present invention, the 5-freestanding rock mass is designed to be able to cut 5 free-side faces in a direction perpendicular to the direction of travel using a string, as in FIG. 6, and additionally, a hydraulic actuator , Hydraulic Rock Splitter (not shown), etc.) can be inserted into a borehole used for cutting by using a lanyard and a pulley to cut a rock mass (not shown).

If the distance between the starting point and the ending point is long, repeat this procedure to solve the problem by devising a method to excavate the rock without vibration and noise and shattering. Respectively.

The present invention solves the above-mentioned problems and describes the effect obtained thereby.

Since blasting was excluded, the existing facilities were protected by blasting harm, and safety was improved and blasting complaints were solved.

When the rock mass is blasted, the mass of the rock mass is increased to about 1.8 times, and the throughput of the rock mass is increased.

By eliminating the blasting, drilling and burial process for blasting is omitted, construction process is reduced and construction time is saved.

It is possible to increase the efficiency through economical efficiency, stability and shortening of air due to the above effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
1 shows a comparison between an embodiment (left side) of a tunnel boring tunnel and an embodiment (right side) of a rock cutting tunnel
Fig. 2 is a schematic view of the direction control drilling from the vertex of the polygon that circumscribes the tunnel to the tunnel direction
Fig. 3 is a conceptual diagram in which a direction control borehole is enlarged for inputting a string and a pulley.
Fig. 4 is a conceptual diagram of forming a 5-free surface by cutting a rock with a polygon that surrounds a tunnel,
5 is a conceptual diagram for securing a space in a rock by removing a rock mass
FIG. 6 is a conceptual diagram for securing a space in a rock by forming a 5-free surface by cutting the rock in a direction perpendicular to the formation of 5 free surfaces
7 is a flow chart
8 is a flowchart showing the flow of the present invention in a step-

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

Fig. Comparison of the existing blasting method and the cutting method by the string.

This is a comparative view of a method of forming a space in a rock by conventional drilling, charge and blasting, and a space in a rock formed by a small number of directional control drilling, perforation expansion, and string breaking by the present invention. Securing the space in the rock by drilling, charging, and blasting causes pollution by vibration, noise, dust, and scattering by explosion.

The present invention is proposed as an alternative to an area where it is difficult to carry out drilling, loading, blasting, or blasting for an existing excavation of the present invention and where the construction efficiency is poor.

Fig. Designed to form a space in existing rock mass. Perform drilling on the outside of the excavation line.

When the length of the space in the rock is short, general rock drilling is performed to penetrate the starting point and the ending point. However, if the length of the space in the rock is long and formed by circular curves, relaxation curves, etc., directional control drilling is performed to satisfy the above conditions. In case of vertical or underground joint, drilling should be carried out in accordance with a predetermined planned depth or depth even if the end point is within the rock.

FIG. Extending the directional control borehole.

The borehole is enlarged along the borehole, as shown in Fig. 2, to a diameter that can accommodate the lapel to cut the rock and a puller device to guide it.

Fig. Step of cutting the rock with lanyard and pulley device.

Cut the rock by putting a pulley device and a lanyard to guide the lanyard to the enlarged borehole. At this time, the foundation rock to be cut is cut straight along the center of the first borehole.

FIG. 5 is a stage for completion of rock cut by a string.

When cutting is completed for the space in the rock with the shortest length in the rock by a string, the cut rock is formed with 6 free sides. If cutting the long space, several cutting operations are repeated. The cut surface at this time forms 5 free surfaces.

6. Right - angled reverberation rock - cutting process in the direction of travel.

In the process of 'Figure -5', the rocks with 5 free sides are attached to the bedrock, which is difficult to treat. In this step, the lath cutter is inserted into the cut surface with the 5 free sides and the cutter is installed by using the lath cutter in order to use the 2 balls used for cutting the lower and the lower cutter in the direction perpendicular to the direction of the rebound.

Also, Flowchart.

This is a flow chart of the present invention described so far.

Also, FIG. 6 is a flowchart showing the flow of the present invention in a step-by-step manner. FIG. 6 is a step-by-step illustration of a process of excavating a tunnel by cutting a rock using the present invention.

01: Designed excavation line for rocky space
02: Directional control borehole
03: A ball that extends a directional control borehole to accommodate a string and pulley.
04: Outer side of the rock cut with a string
05: Inner side of the rock cut with a string
06: Excavation target rock mass
07: lanyard (lanyard, wire saw)
08a: Cutting face with cutting direction at right angle
08b: Uncut surface with no cutting at right angles to the proceeding direction
09: Cutting line (Cutting direction of cutting line, Wire Saw)

Claims (3)

In the case of forming a space in a rock, a point of a borehole is determined by a triangle or more polygon that surrounds a conventional design excavation line, and a drilling or directional control drilling (drilling) Directional Drilling) to conduct the advanced drilling which is the closest to the design excavation line, enlarge the ball, and insert the pulley and the pulley which guides it into the enlarged borehole. ;
Directional Core Drilling (Directional Drilling) is performed along the direction of the internal space of the rock by applying the above equipment combination and construction methods, so that the nearest to the design excavation line A method of constructing a space in a rock bed characterized by a method of drilling and cutting a rock as a pulley and a lanyard drive device that guides the lanyard and the lanyard after the advanced drilling is performed. A method of forming a plan space in a rock by forming six free surfaces in a rock by cutting along a route direction of the planned space in a direction perpendicular to the direction of travel of the planned space using existing boreholes and cut surfaces in the claim 1. In the claims 1 and 2, Directional Core Drilling (Directional Drilling) is applied to the rocks formed with 2, 3, 4 free faces instead of the existing 1 free surface, and the rocks are drilled and cut A method of cutting a rock.

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