KR20040098837A - Improved type to be used for various of that work procedure method for the SOILNAILNG ANCHOR=This namely is the SONA and structure shapes - Google Patents

Abstract

PURPOSE: A multi-purpose improved soil nail anchor construction method and a structural form are provided to improve safety and reliability, to increase tensile force resistance, and to simplify and facilitate a process. CONSTITUTION: A rotary shaft and a high tension excavation pipe combining device(18) are manually rotated, inserted, and joined to a hydraulic rotary gear head(1). A high tension excavation pipe(4) is combined to the rotary shaft and the front end of the high tension excavation pipe combining device and then a hole is perforated by applying drilling pressure. The propulsion speed and water jetting pressure of the hydraulic rotary gear head is regulated with checking mechanically pneumatic pressure and the turbidity of water discharged out of slime(2) to prevent a perforated wall from expanding, collapsing, or subsiding. After drilling the wall at a planned depth, a little slime and mud remaining in the perforated wall are completely discharged out by jetting water by the high tension excavation pipe.

Description

Improved type to be used for various of that work procedure method for the SOILNAILNG ANCHOR = This namely is the SONA and structure shapes}

The present invention belongs to the slope activity suppression method of slope slope prevention measures slope slope prevention method for each slope (surface) due to cutting of soil ground, rock slope slope, natural slope landslide prevention in civil engineering and building construction The core technology underlying is the nail nail anchor method.

Anchor objects of the anchor construction method currently applied in Korea include roads, tunnels, dams, ports, rivers, complexes, residential areas and other constructions. Soil nailing, rock bolts, rock anchors, etc. are being implemented as pipes.

When installing these, conventional work is carried out by drilling and drilling the weathering pipes after drilling in weathered soil, weathered rock soft rock and hard rock ground by drilling pipes of the diameter specified in the design, and then tie the designated anchors together with the grouting PE hose. Insert into the hole by manpower.

Before this process, the breakdown, depression and perforation inclination of perforated wall (weathered sand, weathered rock, soft rock, hard rock) are inclined slope of more than 15 degrees, so the remaining soil and rock fragments in the hole are rolled into the tip of the downhole. In many cases, there are many problems in standard work due to the decrease in the length of the installation in the hole and the ground at the time of drilling. , Due to excessive loss of injection material due to expansion of empty wall, delay of construction period due to reconstruction of hollow wall depression, difficulty in installing central location of empty wall due to expansion of empty wall, safety accident due to excessive work due to repetitive installation process, and uncertainty of grouting design injection volume Loss of construction cost, uncertainty due to uncertainty of slope stability implementation plan, heterogeneous mixed strata By non-standard construction suitable for application when the generated and employing the appropriate method on each soil characteristic at each perforation will be a problem of economic loss due to the construction time delay results in occurrence.

The present invention is to shorten and improve the construction step process to solve the above problems, replace the drilling drilling main building with a nail nail anchor for the reinforcement anchor installation substitute and immediately complete with high strength cement milk injection.

The completion process is a process of <first stage> and <second stage>.

<Phase 1> When the high tension drilling pipe (anca main body) drilling is carried out by pneumatic pressure, the crushing dust inside the ball is ejected to the outside, resulting in scattering dust, which causes environmental pollution and health environment pollution, and atmospheric noise environment caused by high pressure pneumatic excavation. Due to the complaints, these problems were reduced and improved, and the invention was made to simplify the operation by combining the air pressure shock type and flush injection structure.

The existing work method is a simple <first step> process invented without adopting the conventional method of pulling out the excavation pipe to the outside by machine power device and combining it with high-tension reinforcement and grouting injection manjack tube after cutting the excavation pipe. In other words, the technical problem was solved by propelling the excavation pipe to the planned depth by substituting high tensile steel and replacing the main building with high tensile anchor body.

<Step 2> The final process of high strength cement milk pressure grouting injection filling is <Step 1>

After the high tension drilling tube (anchor main body) is completed in the perforated hole, the milk injection fastening device is immediately fastened to the head of the anchor body, and the high-strength cement milk is injected into the hole by high pressure. It solved the problems that were inherent and solved the problems of construction technology and safety.

The technical feature of the present invention is to solve the problems as a result of the improvement by focusing on the technical usability and safety by simplifying the first and second steps.

1 is a high-strength drill bit fastened by a pressure rotary impact drill drilling equipment

Cross-sectional view showing completion process of drilling pipe (anca body)

Figure 2 is a high-strength drilling tube (anca body) after drilling is completed in high strength

Cross section showing the process of filling and filling cement milk with grouting pressure <Step 2>

Figure 3 is a cross-sectional view showing the pressure plate fastening form on the head of the high tension drilling tube (anca body), it is pre-fastened in the process of FIG.

4 is a structural structural diagram of each partial device used in the present invention;

Figure 4-1 Structural Type: Hollow Injection Type

Fig. 2-2 Structural Type: Non-injection Type)

<Description of the symbols for the main parts of the drawings>

1: Hydraulic rotary gear head 2: Slime ejected with flushing water

3: adhesion force increase projection 4: high-strength drilling tube (anca body)

5: Machining drill bit 6: Female impact impact crusher

7: Machinable carbide bit 8: Sand cutting cutting broken carbide bit

9: Injection milk stream flow direction and tip discharging outlet

10: water sprayer and cement milk sprayer

11: Injected milk into Anca Main Building

12: Separation type milk injection pipe (tightening device)

13: High Pressure Hose Pipe for Milk Injection

14: anchor tofu fixing plate

15: Acupressure plate fixed tightening device

16: high strength cement milk filling part

17: Chiropractor reported strength steel bars

18: Rotating side and high tension drilling tube fastening device

19: cement milk backwash plate presser

20: cement milk backflow discharge pipe

Refer to Figure 5 completed structure

Hereinafter, described in detail by the accompanying drawings as follows.

<Structure> (1) Anchor main pipe High tension drilling pipe with water sprayer and cement milk sprayer

(1) High tension drilling pipes (anca body) without water sprayers and cement milk sprayers in the anchor main pipe

<Structural Type Classification> (1) Water spray hole and cement milk water spray hole on both high tension drilling pipe and anchor body pipe wall, dual use for single use, existing spray hole type (Model: air hole spray type)

(1) Water jet hole and cement milk spray hole Drill bit ejection hole injection type (Model: no-air injection type)

<Usage> (1) Pore-spray type: It is very weathered by hard rock and soft rock weathered rock.

(1) Non-injection type: hard rock. A hard weathered soil composed of hard pumice and ingot as a weathered rock with low soft rock weathering

<Comparison of explanation format>: All structures are the same common type and there is a difference only in the presence and absence of the injection hole, and both have the following reasons.

(1) The no-air injection type has good work safety, stable workability, and consistent working standards, so it is not necessary to derive problems and will not be described separately.

(1) Since the hole-injection type has a matter to be noted in the safety process in the working process, the present invention is described in detail to achieve the object of the present invention and to present a standard method for the work.

<Description> <Step 1> (Pressure shock rotating flush drilling) of Figure 1 Drilling thrust drilling equipment Equipped with a rotating shaft and a high-strength drilling pipe fastening device 18 to the hydraulic rotary gear head 1 manually manufactured after coupling (3). (5). (6). (7). (8). (10) after tightening the high tension tube (anca body) 4 to the end of the rotating shaft and the high tension tube coupling device (18). The drilling is performed by applying drilling pressure to the planned position.

The propulsion speed and water spray pressure of the hydraulic rotary gear head 1 are blown out and discharged together with the air pressure and the flushing water so that the perforated wall does not expand or collapse when the perforated wall is deformed. And turbidity of the discharged water to the Visually check the back and other physically and mechanically to make adjustments, adjustments, and punctures to the intended depth of depth, and then control pressure propulsion of the hydraulic rotary gear head 1 and completely remove the slime and soils remaining in the perforated wall. When the high-tension drilling pipe (anca main body) (4) is sprayed by water or idling or completely discharged by water spraying at a stationary state, it is ejected and discharged, and then clean water without foreign matter slime is discharged to the outside. Step 1> After stopping the process immediately

<Explanation> Immediately perform the high-strength cement milk pressure grating injection system of <Step 2> (completed injection) of FIG.

In order to immediately perform such a construction method, in consideration of the field equipment and working conditions, a suitable one should be selected from the [method 1] manual fastening injection method, the [second method] injection pipe and the main mechanical fastening method.

[First Method]

Manual fastening injection method is to remove the hydraulic rotary gear head (1) from the rotating shaft and the high tension, drilling pipe fastening device (18) by mechanically and physically reverse rotation, and then remove the milk injection high pressure hose pipe (13) separately (Tightening type coupling device) (12) Fasten the milk injection into the anchor body pipe immediately after inserting and fixing it in advance. Insert the fastening pipe (11) and fasten the high-strength cement milk stirred in the cement milk stirring mixer. The grouting pump should be ejected through the high-tension drilling pipe (anchor body) 4 through the tip discharge port 9 and the anchor body cement cement injection hole 10 to be ejected into the ball. The filling speed should be controlled to adjust the injection pressure and speed so that the filling from the lower part to the upper part is slowly filled up. In addition, the head of the high tension drilling tube (anca body) (4), which is exposed to the outside to be sufficiently stirred with cement milk in the ball, is arbitrarily bound, and the upper and lower half rotations are made at a speed as fast as possible and thoroughly mixed by the necessary tools. Shake to stir.

In addition, the adhesive force increase protuberance (3) should be completely restrained after the cement milk has cured.A non-expandable expansion admixture is added to the cement milk so that the cement milk is completely filled with the weathered soil and weathered rock. [First method] step of grouting sieve work by addition stirring.

Material quality control and cement milk consistency. Worker ability. The amount of bleeding. Milk compressive strength, flexural strength, tensile strength. New shrinkage. Adhesion. For other tests, mix design and test mix before cement milk injection. Determine the mix ratio according to the test result target.

High-strength cement milk final quality control is terminated by compressive strength test results for the age of the age.

The above-mentioned [first method] manual fastening injection method is characterized in that it was invented for the purpose of substituting high tension drilling tube as an anchor body by directly injecting grouting pressure into the hollow tube of high tension drilling tube (anchor body).

[Method 2]

The mechanical injection method of the injection pipe and the main pipe is connected to the rotary shaft and the high tension pipe coupling device (18) between the hydraulic rotary gear head (1) and the high tensile pipe (anca body). It is injected with high pressure and ejects the discharging end 9 and the anchor tube cement milk injection hole 10 through the centrifugal centrifugal force and the high pressure injection pressure through the hollow inside of the high tension drilling tube (anca body), and grouting fills in the perforated wall space. 2 method] step

The above-mentioned [second method] injection tube. The main mechanical fastening method is simpler than the [first method]. It is characterized by the invention for convenience.

High quality cement milk quality control is same as [the first method].

The above-mentioned [First Method] manual fastening injection method and [Second method] injection and main mechanical fastening method were invented very effectively for design plan, workability, stability, economic feasibility and maintenance at construction site, and changed working conditions. It is easy and simple to deal with immediately, and it is easy and convenient to improve and improve.

As described above, the present invention SONA is a high-strength reinforcement for the purpose of improving the reliability and maintenance of constructability safety economics by supplementing and improving the existing complex construction process and problems. PC steel wire and stranded wire. High-strength main steel, high-strength pipe, etc. Invented by standardization by improving the performance and structure into a single type, in order to use in the diversification of the shape, soil nailing look bolt. Steel pipe anchor. Structural base anchor pile. Invented for multi-purpose construction by improving to a single standard form for the others. Mechanical property Improved tensile strength resistance by attaching an increase in attachment force on the metal tube and increasing the tensile resistance by using the anchoring part on the metal tube. It is a big feature that it was improved by inventing the derived muscle shape in a variety of sizes to resist.

Cement milk grouting in perforation is simple and easy to inject, as well as high strength material. Rock mass Improved to be sufficiently supported by pressure and earth pressure, it is very effective for construction and use.

The present invention, the multipurpose improved Soil Nail (SONA) construction method is commercialized in domestic conditions, effectively contributes to the development of national technology, and infinitely high-quality research and security by the mountain cooperative research institute, widely promoted domestically and abroad, and effectively used as well as national economy and It is a hope that advancement will be made in technological advancement.

Claims (2)

It is a combination of a rotating shaft and a high tension drilling tube fastening device (18), a computerized product of a specific shape, and a fastening. It is the joining joints with the increase of adhesion and the specific shape with the processing parts. High tension drilling pipe (anchor body) (4) and certain shape products and joints. Anchor main tube water spray and cement milk spray hole (10) and the specific shape and injection hole injection position computerized processing. Joining machine tool drill bit (5) with certain shape products. It is a combination of the female impact shock device (6) and a specific shape product. Milk injection fastening mold (11) to the anchor body pipe and the specific shape products and joining fastening. Separated milk injection mold pipe (tightening device) (12) and certain shape products and joining. Combination of acupressure plate fixed fastening device (15) with specific shape products. It is composed of cement milk backflow preventive pressure plate device (19), a specific shape product and a fixed fastening step. <Step 1> The pressure shock rotating flush construction method is mainly characterized by high tension anchor body drilling pipe drilling, and the construction stage is to increase the adhesion force.3) Machining drill bit (6), Machining carbide bit (7) Crushed cemented carbide bits (8) Anchor body tube water injection and cement milk injection hole (10) of the high tension anchor body drilling tube (4) is fastened to the end of the rotating shaft and the high-strength drilling pipe fastening device (18) to the hydraulic rotary gear head ( 1) Construction method of water drilling and pneumatic combined drilling completion stage construction method <Second Step a> The manual fastening injection method of injection completion construction method is to close the milk injection fastening release pipe (11) to the anchor body pipe on the head of the high tension anchor body drilling pipe (4), and then separate milk injection release pipe (fastening type) Coupling device) (12) is composed of a high-pressure hose pipe (13) for the injection of milk is assembled into the anchor body pipe to the milk injection fastening pipe (11), and then cement high strength milk is injected into the hole by high pressure Way. <Second Step b> The injection pipe main method of the injection completion construction method is a mechanical injection method that is connected to the rotating shaft and the high tension drilling tube fastening device coupled to the intermediate part of the hydraulic rotary gear head (1) and the high tension anchor body drilling pipe (4). (18) The method of completing the step of injecting cement high-strength milk into the perforation by high pressure after coupling the high pressure lake pipe 13 for injection into the double pipe head.