KR102524624B1 - Directional press-in method with enhanced drilling by-product treatment function - Google Patents

Abstract

The present invention relates to a directional press-in method with an enhanced drilling by-product treatment function. According to the present invention, the directional press-in method with the enhanced drilling by-product treatment function includes: a first step of forming an access hole by excavating a predetermined part of ground surface at a fixed depth and installing an excavation device on the access hole, wherein the excavation device includes an excavator at a front end; a second step of forming an excavation hole in the ground by using the excavator; a third step of expanding the excavation hole by separating the excavator from the front end of the excavation device and combining a reamer; and a fourth step of cohering sludge generated in the expanded excavation hole by spraying a collection agent including bentonite to the expanded excavation through a spray unit mounted on the excavation device. According to the present invention, the directional press-in method with the enhanced drilling by-product treatment function can indicate an excavation force of a high level and improve coherence and treatment efficiency of a by-product generated during an excavation process at the same time. Accordingly, the directional press-in method with the enhanced drilling by-product treatment function can solve a problem in which a perforation by-product remains in the excavation hole and blocks the excavation hole.

Description

Directional press-in method with enhanced drilling by-product treatment function}

The present invention relates to a directional indentation method in which the treatment function of drilling by-products is enhanced. More specifically, a recovery agent containing bentonite is sprayed into an enlarged drilling hole to coagulate sludge, thereby enhancing the treatment function of drilling by-products. It relates to an enhanced directional press-in method.

Oriented horizontal excavation, that is, HDD (Horizontal Directional Drilling), means a method of burying a pipe without excavating the ground surface. This method is a method of excavating underground without causing destruction or deformation of superstructures during pipeline construction and underground facility construction. It is a process that complements problems such as traffic congestion and waste of resources due to excavation.

The conventional directional horizontal excavation method surveys and plans obstacles and goes through preliminary preparation steps such as surveying and linear determination, and then excavates the ground surface where the pipe is to be buried at predetermined intervals to form an entry work hole and a reach work hole. do.

After that, the horizontal excavation device that operates the drill pipe and reamer to which the excavation blade (excavation blade, cutter disk) is attached to the entry work side continuously pushes the drill pipe into the ground through the installer, A drilling hole is formed in the direction, and when the drill pipe reaches the reaching work hole, a reamer is combined instead of the drill pipe.

The reamer is used to expand the excavation hole using a horizontal excavation device so that an excavation hole of a certain diameter is formed. and by pulling the reamer from the reach hole to the entry hole using a horizontal excavation device, the pipe is pulled into the drill hole to bury the pipe in the drill hole between the reach hole and the entry hole do. Finally, when the reaching work hole and the entry work hole are filled with a landfill material such as soil, the pipe laying work is completed.

There are also a number of domestic prior arts for improving such an underground horizontal excavation process. As an example, such as Korean Patent Nos. 1249257 and 1186840, the technology for the structure of a hole expander used in the HDD method is posted. .

However, in the prior art described above, there is no configuration capable of separately removing the vomit generated from the excavation hole, so there is a limitation that the excavated excavation hole may be clogged due to vomit or other floating matter.

Therefore, in order to solve the above-described problems, a new and advanced directional press-fitting that enhances the by-product treatment function by cohesiveness while coagulating and recovering the drilling by-products including silt and floating matter generated from the expanded excavator This is the time when the need to develop a method emerges.

Domestic Patent No. 1249257 Domestic Patent No. 1186840

The main object of the present invention is to solve the problem that the drilling by-products remain in the drilling hole and block the drilling hole by enhancing the cohesiveness of the by-products generated during the drilling process and strengthening the processing function for the drilling by-products.

Another object of the present invention is to enhance the by-product treatment function by adjusting the injection pressure of the injection unit according to the amount of the drilling by-product.

Another object of the present invention is to prevent bubbles from being generated inside an excavation hole due to a recovery agent injected at high pressure through an injection means.

In order to achieve the above object, the directional press-in method with enhanced processing of drilling by-products according to the present invention forms an entry hole by excavating a predetermined portion of the ground surface at a certain depth, and inserts an excavator having an excavator at the tip into the entry. The first step to install on the ball side; A second step of forming an excavation hole into the ground through the excavator; A third step of separating the excavator from the tip of the excavator and then combining the reamer to expand the drilling hole; and a fourth step of coagulating sludge generated in the enlarged drill hole by injecting a recovery agent containing bentonite into the enlarged drill hole through a spraying unit mounted on the drilling device.

The fourth step is to photograph the sludge remaining inside the drilling hole through a photosensor, and spray the recovery agent while adjusting the spraying pressure according to the level of the amount of the remaining sludge, thereby generating It is characterized by coagulating the sludge.

In addition, the recovery agent is characterized in that it further comprises a foam control agent containing lecithin (lecithin).

According to the directional press-in method that enhances the processing function of perforation by-products of the present invention,

1) It can exhibit a high level of excavation force and at the same time increase the coagulation and recovery efficiency of by-products generated during the excavation process, thereby solving the problem of drilling by-products remaining in the excavation hole and blocking the excavation hole,

2) The sludge recovery efficiency can be maximized by adjusting the injection pressure according to the amount of residual sludge.

3) By adding a foam control agent containing lecithin to the recovery agent, it suppresses the generation of bubbles when the recovery agent is sprayed through the injection unit, preventing the flocculated sludge from having an excessively large volume and diameter, and at the same time preventing the recovery agent from having a large volume and diameter. has the effect of increasing the mixability of

1 is a conceptual diagram showing a schematic process of the directional press-in method of the present invention.
Figure 2 is a flow chart of the directional press-in method of the present invention.
Figure 3 is a flow chart showing the detailed sequence of the fourth step of the present invention.
Figure 4 is a flow chart showing steps for preparing a foam control agent.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and like reference numbers in each drawing indicate like elements.

1 is a conceptual diagram showing a schematic process of the directional press-in method of the present invention, and FIG. 2 is a flow chart of the directional press-in method of the present invention.

Referring to FIGS. 1 and 2 , the directional press-fitting method with enhanced processing functions of drilling by-products of the present invention basically includes a first step, a second step, a third step, and a fourth step.

The directional press-in method of the present invention can be applied to form drilling holes 30 of various diameters with a certain length in general terrain.

Furthermore, the directional press-in method may include a one-way horizontal excavation process as shown in FIG. 1 and a bi-directional excavation process, although not shown in the drawings.

Hereinafter, each step included in the directional press-in method of the present invention will be described in detail according to the flow chart of FIG. 2 as follows.

(S1) 1st step

First of all, the directional press-in method of the present invention investigates and plans the area where the drilling hole 30 is to be formed, that is, the obstacle, and goes through preliminary preparation steps such as surveying and linear determination, then the pipe 60 or other The entry hole 10 is formed by excavating the ground surface (or the sea floor) where the structure is to be buried (hereinafter, such excavation is also referred to as 'press-in' in the present invention).

At this time, when the obstruction is on the ground, it is possible to form not only the entry hole 10 but also the arrival hole 20. When the press-in method is completed later, a severe error occurs in the position of the target arrival hole 20 To prevent this, the arrival hole 20 is formed spaced apart from the entrance hole 10 at an interval corresponding to the total length of the above-described pipe 60 or other structures.

When the entry hole 10 is formed, an operation of installing an excavation device 100 having an excavator at a front end near the entry hole 10 is performed. Then, the drill pipe 40 to which the drilling blade (excavation blade) is attached to the entry hole 10 or the drilling rig 100 capable of mounting the excavator is installed through a known installation means, and then the drilling device 100 ) to form a drilling hole 30 in the direction from the entry hole 10 to the arrival hole 20 by continuously pushing the drill pipe 40 into the ground.

At this time, the drill pipe 40 is not necessarily a means, and it is possible to form the drill hole 30 only by the excavation process of the excavator without such a drill pipe 40.

The drilling rig 100 of the present invention is a head equipped with a bit via the above-described drill pipe 40 or without the drill pipe 40 at the tip, or a rotary wash, water hammer unit or water jet to be described later, and It may be a device equipped with the same excavator to perform basic excavation processes.

Most preferably, the drilling rig 100 of the present invention may include at least one of a rotary wash, a water hammer unit, and a water jet, which will be described later. Here, the water hammer unit and the water jet will be collectively referred to as spraying means.

In addition, based on the state in which the excavator can be detachably coupled to the excavator 100, it is possible to combine the reamer 50 in addition to the excavator to the front end of the excavator 100, as well as the side end around the front end in addition to the front end. It is also possible to install a spraying module or an inhaler capable of spraying a specific composition or inhaling soil.

In summary, the first step of the present invention consists of a known entry hole 10 / arrival hole 20 forming process and a step of installing an excavation device 100 having a known excavation function, which is well known. The process of forming the entry hole 10 and the like and the installation process of the excavator 100 may be the same.

(S2) 2nd step

The second step performed subsequently is a process of forming the excavation hole 30 into the ground through the excavator. As briefly mentioned above, the excavator of the present invention may include the drill pipe 40 described above or be made of various structures such as a bit head, a rotary wash, a water hammer unit, a water jet, and most preferably as described above. The drilling hole 30 may be formed while spraying water by using a spraying means including any one of a lotus wash, a water hammer unit, and a water jet.

Here, the rotary wash includes a rotatable brush at the end while spraying water, so that the drilling hole 30 is formed by rubbing the inside of the ground with the rotatable brush while spraying water.

As another example, a method of forming the drilling hole 30 using a water hammer unit will be described in more detail as follows.

In general, hammer devices include an air hammer using pneumatic pressure and a water hammer using water pressure. The air hammer has a problem in that it is difficult to drill a relatively deep excavation hole 30, but the water hammer provides high impact force using water. In addition, it has the advantage of being able to discharge rock fragments at the same time when discharging sludge mixed with water together with soil generated in the excavation process later.

The water hammer unit refers to a water hammer using water pressure as described above. Although not shown in the drawings, a plurality of bits providing a striking force during excavation are rotatably installed via a rotating shaft as a pipe-shaped body, and the inside of the body It may include a tank for storing water, a pump for pumping the water stored in the tank, and a nozzle for spraying the water pumped by the pump to the front end of the main body.

The above-described water hammer unit describes a known basic structure, and the water hammer unit of the present invention has additional structures such as a drilling angle adjusting unit, a water pressure/amount adjusting unit, and an injection timing control unit based on this structure. May be additionally included, and it is possible to be coupled to the front end of the drilling device 100 via a rod capable of moving forward via a motor.

This water hammer unit advances from the entry hole 10 by the advancement of the rod and the rotation of the rotating shaft, while the bit strikes the underground bedrock to form a drilling hole 30 into the ground, and at the same time toward the drilling hole 30 In addition to providing excellent digging force with the sprayed water pressure, it is possible to pursue the ease of discharging sludge including soil and rock fragments.

Preferably, in forming the drilling hole 30 by injecting water into the drilling hole 30 through at least one of the water hammer unit and the water jet, more preferably, the drilling composition containing water is mixed with the water hammer unit and the water jet. It is possible to form the drilling hole 30 by spraying through at least one of them.

Here, the excavation composition includes water, and the water may be the excavation composition, but preferably, by using an abrasive mixed with water, the excavation target (rock or soil, etc.) is more efficiently polished in the excavation process of the excavator, resulting in Provides a function to increase the digging force.

Since this excavation composition preferably includes water and an abrasive, the main feature is that the water of the excavation composition provides the water pressure required for basic excavation while providing a better excavation force by abrasive function of rock mass or soil by the abrasive.

At this time, if the excavator of the present invention is not a water hammer unit, it is also possible to apply an excavator including a spray function capable of spraying an excavation composition, so the excavator of the present invention does not necessarily have to be made of a water hammer unit, but basic water spray Applying a water hammer unit equipped with a function is more preferable for economical reasons that there is no need to provide a separate injector.

The water hammer unit can be separated from the front end of the drilling rig 100, so that the reamer 50 can be coupled to the front end of the separated drilling rig 100. The detachable structure of the water hammer unit may refer to a known structure in which the coupling structure with the above-described rod is designed to be detachable.

The abrasive of the present invention may be included with water in the tank of the above-described water hammer unit, or may be configured to be sprayed together when water is sprayed from the excavator through a separate supply pipe connected to the excavator.

In this case, the abrasive may be made of a material including at least one of sodium bicarbonate, corn cob, and quartz sand.

Sodium bicarbonate is water soluble, so it is mainly used for wet polishing, and has the advantage of being environmentally friendly. In addition, it has excellent performance as an abrasive and exhibits a fast work speed, which has the effect of increasing the excavation speed.

Corn cob is an eco-friendly material with a moderate hardness and a Mohs hardness of about 4.5 as dried, compressed and pulverized after harvesting corn kernels. It has the advantage of being eco-friendly and inexpensive.

Quartz sand is a material of high hardness having a Mohs hardness of about 7.5, and has excellent performance as an abrasive and is very inexpensive. Therefore, it has the advantage of excellent economical efficiency and excellent polishing performance.

At this time, the abrasive is mixed with the water of the above-described water hammer unit or water jet to form an excavation composition, which may be mixed with 80 to 95 parts by weight of water and 1 to 20 parts by weight of the abrasive, based on water. The weight can be varied according to the situation according to the density of rocks in the ground and the distribution of rocks and soil.

In summary, the abrasive of the present invention is mixed with water to form an excavation composition while more efficiently polishing an excavation target (rock, soil, etc.) in an excavation process of an excavator, thereby providing a function of increasing excavation force.

(S3) The third step

As described above, the drill pipe 40 or the water hammer unit (or water jet, rotary wash) to which the drilling blade (excavation blade) is attached to the side of the entry hole 10 is operated, that is, the drill pipe 40 is continuously driven into the ground. When the drilling hole 30 is formed in the direction from the entry hole 10 to the arrival hole 20 by pushing or continuously drilling the hole 30 through the water hammer unit, at the tip of the drilling device 100 The combined excavator (drill pipe 40, water hammer unit, water jet, rotary wash) is separated, and then the reamer 50 is coupled.

Here, since the reamer 50 has the same structure as the known reamer 50, a detailed description of the structure will be omitted.

When the reamer 50 forms an excavation hole 30 having an enlarged size having a diameter sufficient for the pipe 60 or other structure to be inserted through the reamer 50, the rear reamer 50 The pipe 60 is connected to the side end, and the excavator 100 is used to pull the reamer 50 from the arrival hole 20 to the entry hole 10 to remove the pipe 60 or other structure. It is possible to embed the pipe 60 in the drilling hole 30 between the reaching hole 20 and the entry hole 10 by entering the expanded drilling hole 30 .

Finally, when the arrival hole 20 and the entrance hole 10 are filled with a landfill material such as sand, the pipe 60 (or other structures) burial work is completed.

(S4) 4th step

Next, a recovery agent containing bentonite is sprayed into the expanded drilling hole 30 through a spraying unit mounted on the drilling device 100 to agglomerate the sludge generated in the expanded drilling hole 30 and agglomerate the sludge discharged to the outside.

Here, the injection unit may be mounted on the drilling device 100 itself or the reamer 50 separately from the spraying means mounted on the excavator, and may include a tank storing the sludge recovery agent, a pump, and a nozzle, which is a water jet It has the same or similar structure as the above-described injection means including.

The recovery agent sprayed through the injection unit includes bentonite, and is characterized in mixing and aggregating sludge made of excavation residues such as soil and rock fragments as well as the drilling composition composed of the above-described water and abrasive.

Preferably, the recovery agent may be a mixture containing 10 to 30 parts by weight of bentonite and 55 to 90 parts by weight of water.

Water is added to spray the recovery agent in a water jet (or water hammer unit) method, and bentonite is a clay containing mainly montmorillonite, a mineral belonging to the monoclinic system that has a crystal structure like mica. It is added to flocculate the mixed sludge.

When bentonite is mixed with water, it is dispersed in water to form a colloidal dispersion that exhibits high structural viscosity.

Therefore, as the recovery agent is sprayed through the spraying part in a water jet method, etc., the sludge collected in the excavation process and the previously sprayed abrasive can be aggregated and recovered, thereby maximizing the sludge collection efficiency. made it possible

The aggregated sludge may be pushed out again in the direction of the entry hole 10 according to the injection pressure of the injection unit, or when the arrival hole 20 is formed along the excavation direction starting from the entry hole 10, the aggregated sludge It is also possible that the gas is discharged through the reaching hole 20 . That is, the aggregated sludge may be pushed out again in the direction where the injection unit is located, and it is also possible to discharge the sludge to the other end (reaching hole 20) of the excavation hole 30.

According to the directional indentation method that enhances the processing function of the drilling by-products of the present invention, it is possible to exhibit a high level of excavation force and at the same time increase the coagulation treatment efficiency for the by-products generated during the excavation process, so that the drilling by-products are formed in the drilling hole 30 It has the advantage of being able to solve the problem of blocking the excavation hole 30 by remaining in the inside.

Furthermore, when the discharge of the sludge is completed through the fourth step in this way, a step of injecting a filler into the inner wall of the enlarged excavation hole 30 may be further included and performed as a process of the fifth step.

That is, it means that a well-known grouting process (filler injection) may be included in the expanded drilled hole 30 in order to prevent the collapse of the drilled hole 30 or a phenomenon such as drifting of soil from occurring. .

At this time, in the filler injection (grouting treatment) process, a known injection pipe composed of a single pipe such as a single packer, rod, or strainer or a multi-pipe such as a double packer is introduced into the drilling hole 30, and then the end of the injection pipe is inserted into the drilling hole ( 30) and then operate the injector connected to the injection pipe to inject the filler into the inner wall of the excavation hole 30 through the injection pipe. Since this is the same as the known grouting process, a separate specific omit explanation.

Here, the injection tube may be formed of a manjet tube, which is a composite tube capable of injecting while mixing various materials as the filler to be described later is a composite composition.

In addition, it may include a step of curing when the filler is injected into the injection pipe. Curing means protecting the filler so that it is sufficiently cured without being subjected to harmful effects such as temperature change, shock, and load after the filler is injected into the injection pipe. .

Usually, the curing stage means up to 28 days after casting (of course, it can be shorter). Since it is difficult to visually determine the degree of hardening of the filler, it is desirable to set a sufficient curing period in consideration of the amount of filler injected. .

Of course, the end point of the curing step may be specified by determining the degree of hardening of the filler through known non-destructive inspection methods such as radiographic inspection, ultrasonic inspection, and acoustic emission inspection.

Therefore, by injecting the filler into the inner wall of the excavation hole 30 expanded through the fifth step, it is possible to prevent the excavation hole 30 from collapsing and to prevent a phenomenon such as soil drifting.

In addition, in the description of the above-mentioned fourth step, it was said that the injection pressure can be adjusted based on the height of the amount of sludge in the fourth step. It is possible to coagulate the sludge generated in the enlarged excavation hole 30 by taking a picture of the sludge remaining inside and spraying the recovery agent while adjusting the spraying pressure according to the amount of the remaining sludge.

In more detail, the sludge remaining inside the excavation hole 30 is photographed through a photosensor that may be provided on one side of the injection unit, the photographed image is analyzed to determine the particle size (average diameter) of the sludge, and the particle size The injection pressure of the injection part can be adjusted according to the height of the injection part.

If the particle size of the sludge is too large, it may be difficult to discharge the sludge through the entry hole 10 or the arrival hole 20, so the injection pressure of the injection part is increased to reduce the size of the sludge so that it can be adjusted, and the injection pressure of the injection part is too large. If the size of the sludge is too small, there is a concern that the coagulation performance may deteriorate, so the injection pressure can be reduced.

Therefore, it is possible to control the operation of the spraying unit with the optimum spraying pressure to increase workability while allowing the sludge to be properly coagulated and discharged.

3 is a flowchart showing the detailed sequence of the fourth step of the present invention.

Referring to FIG. 3, the above-described fourth step in more detail can be composed of a sludge photographing step, a particle size detection step, and a particle size control step.

The sludge photographing step is a step of photographing the sludge remaining inside the excavation hole 30 through a photosensor. This may be referred to as a basic process of photographing the sludge and generating a video or image based on the photosensor provided inside the excavation hole 30 as described above.

Next, the average particle size of the sludge is determined based on the video or image of the sludge captured through the sludge photographing step.

At this time, after specifying the color range of the sludge, the sludge can be detected in the frame of the image or video by detecting the pixels occupied by the color of the corresponding color range on the frame of the image or video taken. In this case, the area occupied by the sludge on the image In addition, when sludge is detected as an object having a closed curve, an average particle size including either the average width or length of the object can be calculated.

Therefore, in the case of flocculated sludge, that is, sludge flocculated in a circular or elliptical shape, any one of the average width and length of the closed curve represented by the sludge is calculated as the average particle size, which can be performed through image analysis.

The particle size control step performs a function of adjusting the particle size by adjusting the spray pressure of the spraying unit when the calculated average particle size exceeds a preset reference particle size. When the recovery agent containing the solvent is additionally injected at a high pressure in a state where the amount of the flocculated sludge is determined, the particle size may be partially reduced as the flocculated sludge is partially broken by the recovery agent and then flocculated again.

Therefore, when the average particle size exceeds the preset reference particle size, the particle size can be adjusted by additionally injecting the recovery agent at a high pressure through the spraying unit to further crush and re-agglomerate the sludge having a high particle size. Here, the reference granularity is a value that can be set in advance, and the unit and value are not limited, and may be set by a device manager or the like.

Furthermore, it goes without saying that it is also possible to increase the particle size by lowering the injection pressure of the injection unit so that the sludge more smoothly aggregates when the particle size is significantly less than the predetermined standard particle size.

In this way, according to the configuration in which the average particle size as well as the high and low of the sludge is measured through the photosensor, and the average particle size is compared with the reference particle size to adjust the spray pressure of the spraying unit, the sludge amount is high and low, and further the sludge particle size By controlling the injection pressure of the injection unit according to the above, the sludge whose particle size is controlled through the recovery agent can be more smoothly recovered and at the same time it is possible to maximize treatment efficiency by having an appropriate particle size.

Furthermore, the above-described recovery agent is injected through a spraying unit provided in the excavation rig 100, where, when excessive bubbles are generated in the sprayed recovery agent, the aggregation of the sludge is delayed due to the generated bubbles, or the surface of the aggregated sludge There is a concern that each of the sludges coagulated by the generated bubbles may exhibit an excessive volume, that is, an excessive diameter.

To prevent this, the recovery agent of the present invention may further include a foam control agent including lecithin. Preferably, in this case, the recovery agent includes 10 to 30 parts by weight of bentonite, 55 to 90 parts by weight of water, and 1 to 10 parts by weight.

Lecithin, an active ingredient of the foam control agent, is a type of fat and is a major component of biofilms. It is harmless to the human body and can be easily decomposed in nature, so it is environmentally friendly as well as acting as a natural emulsifier and antifoaming agent to prevent foaming. It suppresses and improves the mixing of the recovery agent containing the foam control agent to increase the mixing of the sludge.

Therefore, as such a foam control agent is further included in the recovery agent, it suppresses the generation of bubbles when the recovery agent is sprayed through the injection unit to prevent the flocculated sludge from having an excessively large volume and diameter, and at the same time, the emulsification of the recovery agent is improved. It has the effect of allowing the recovery agent to coagulate in a state where it is easily mixed with the drilling by-product.

Further, the foam control agent may further include an additional composition in addition to lecithin. The steps for preparing the foam control agent will be described in detail with drawings.

4 is a flow chart showing steps for preparing a foam control agent.

Referring to FIG. 4, the foam control agent of the present invention may be prepared through the steps of preparing a primary mixture (S11), preparing a secondary mixture (S12), and completing a foam control agent (S13). there is.

(S11) preparing a primary mixture

First, 10 to 30 parts by weight of hydrogenated sunflower seed oil glyceryl esters, 40 to 70 parts by weight of glycerin, and 10 to 20 parts by weight of lecithin are mixed to obtain a primary mixture to manufacture

Hydrogenated sunflower seed oil glyceryl ester is an ester mixture obtained by transesterification of hydrogenated sunflower seed oil and glycerin, and functions as an emulsion stabilizer and surfactant as well as a non-aqueous viscosity increasing agent, so that a foam control agent is mixed. It not only adjusts the viscosity of the recovery agent so that coagulation occurs more easily, but also increases the emulsification between the aqueous and oily components to increase the mixability, and enables bubble-free mixing with the fat-based component, thereby providing an effect of suppressing foaming.

As described above, lecithin was said to act as a natural emulsifier and antifoaming agent to suppress foam generation and to further improve the mixability of the recovery agent containing the foam control agent to increase the mixability of sludge.

Glycerin serves as a solvent for the foam control agent and at the same time serves as a viscosity reducer to properly control the viscosity increased by the hydrogenated sunflower seed oil glyceryl ester, and further prevents the recovery agent from freezing. It performs the function of preventing the recovery agent from freezing during the spraying process in cold weather.

(S12) preparing a secondary mixture

Then, 80 to 90 parts by weight of the primary mixture, 3 to 5 parts by weight of Sorbitan Sesquioleate, and 5 to 10 parts by weight of a recovery efficiency increasing agent including Glucamate at 50 to 70 ° C. Mix to make a secondary mixture.

Sorbitan sesquioleate is a surfactant obtained by binding oleic acid, a fatty acid, to the hydroxy group of sorbitol, which is also used as a sweetener. It is known to be eco-friendly and highly stable as a natural surfactant and emulsifier component, and is known to have excellent foam control ability because it is an emulsifier type surfactant that does not generate foam.

Here, the recovery efficiency agent includes glucamate as an active ingredient, which is a naturally derived thickener extracted from corn, safe for the human body and the environment, and reduced viscosity due to the addition of sorbitan sesquioleate. It is a substance with a viscosity control effect that can increase the Furthermore, mixing should be performed in the range of 50 to 70 ° C. for smooth mixing of glucamate.

(S13) Step to complete the foam control agent

Finally, 85 to 95 parts by weight of the secondary mixture is mixed with 1 to 5 parts by weight of Pyrroloquinoline Quinone and 1 to 10 parts by weight of sodium gluconate to complete the foam control agent.

Pyrroloquinolinequinone is an abbreviation for 4,5-dihydro-4,5-dioxo-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylic acid, It is the third redox coenzyme. It is known to have an excellent antioxidant effect, and performs a function of preventing oxidation of various components included in the foam control agent, especially organic-based components that can easily go rancid.

Sodium gluconate is an organic acid salt that can be produced by fermenting glucose using microorganisms. It can function as an emulsifier that can help improve the mixability of foam control agents and increase the foam control effect, and at the same time, acidity (pH) It can play a role in regulating, and can assist the antioxidant effect of pyrroloquinoline quinone.

According to the foam control agent of the present invention, by using components that are not harmful to the environment and can be easily decomposed, foam that can be easily generated in the recovery agent sprayed at high pressure can be suppressed, and at the same time, the foam control agent is included. It enhances the mixability of the recovery agent and further provides an effect capable of preventing oxidation of the liquid recovery agent.

Hereinafter, evaluation results of Examples and Comparative Examples will be compared and described in order to explain the physical properties according to the composition of the foam control agent of the present invention. The example consists of Examples 1 and 2 containing the foam control agent of the present invention, and the comparative example is a conventional antifoam composition.

<Example 1>

100 g of lecithin was prepared as a foam control agent.

<Example 2>

100 g of a primary mixture was prepared by mixing 25 g of hydrogenated sunflower seed oil glyceryl ester, 60 g of glycerin, and 15 g of lecithin.

85 g of the prepared primary mixture, 5 g of sorbitan sesquioleate, and 10 g of glucamate were mixed at 60° C. to prepare 100 g of the secondary mixture.

90 g of the prepared secondary mixture, 3 g of pyrroloquinoline quinone, and 7 g of sodium gluconate were mixed to complete 100 g of a foam control agent.

<Comparative Example 1>

83 g of polydimethylsiloxane, 8 g of fumed silica, 2.5 g of organopolysiloxane, and 2.5 g of mineral oil were mixed and homogenized, and foamed by heating at 150° C. for 4 hours in the presence of 7500 ppm of potassium hydroxide solution catalyst in methanol with a strength of 20%. 100 g of regulator was completed.

[Experimental Example 1] Foam control agent effectiveness test

400 ml of black liquor from the pulp process (hardwood from UPM Kymmene Oy, Kuusankoski, Finland) was pumped with circulation at a pumping rate of 1.5 L/min in a 1,000 ml circulation pumping unit temperature controlled at 80°C.

In order to test the effectiveness of each foam control agent, the compositions according to Examples 1 and 2 and Comparative Example, after incorporation of polyethersiloxane, were diluted with mineral oil to produce a solution having a strength of 40% by weight, using a pipette. It was weighed and injected into black liquor.

As soon as the foam level reached a height of 75 mm, the compositions of Examples 1 and 2 to Comparative Example 1 were metered and injected, the foam collapse time, and after the addition of Examples 1 and 2 to Comparative Example 1 and the start of foam collapse The lowest foam level reached was recorded.

The shorter the foam disintegration time t1 and the lower the foam level h1, the better the rapid effect of the foam control agent. Then, the long-term effect of the foam control agent was confirmed, and the long-term effect represents the timespan t2 required to reach the original foam level (75 mm) from the lowest foam level.

Table 1 is a table showing the foam control agent test results. Foam decay time t1(s) Foam level after foam collapse h1 (mm) Long-term effect t2(s) Example 1 13 13 518 Example 2 11 9 594 comparative example 22 18 321

As can be seen from Table 1, the compositions of Examples 1 to 2 of the present invention have a faster foam disintegration time than Comparative Example, a low foam level after foam disintegration, and excellent long-term effects, resulting in excellent foam control performance. You can check.

In addition, through comparison between Examples 1 and 2, it can be seen that the composition of Example 2, including various components for foam control, has better performance as a foam control agent compared to Example 1.
As described so far, the configuration and operation of the directional press-in method with enhanced processing of perforation by-products according to the present invention have been expressed in the above description and drawings, but this is only an example and the spirit of the present invention is not reflected in the above description and drawings. It is not limited, and various changes and modifications are possible within a range that does not deviate from the technical spirit of the present invention.

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10: entry hole 20: arrival hole
30: excavation hole 40: drill pipe
50: reamer 60: pipe
100: drilling device

Claims (9)

As a directional press-in method with enhanced processing function of perforation by-products,
A first step of excavating a predetermined portion of the ground surface to a predetermined depth to form an entry hole, and installing an excavator having an excavator at a tip side of the entry hole;
A second step of forming an excavation hole into the ground through the excavator;
A third step of separating the excavator from the tip of the excavator and then combining the reamer to expand the drilling hole;
A fourth step of injecting a recovery agent containing bentonite into the enlarged excavation hole through a spraying unit mounted on the excavation device to coagulate and discharge the sludge generated in the enlarged excavation hole to the outside,
The recovery agent,
Including a foam control agent and the bentonite,
The foam control agent,
Preparing a primary mixture by mixing 10 to 30 parts by weight of Hydrogenated Sunflower Seed Oil Glyceryl Esters, 40 to 70 parts by weight of Glycerin, and 10 to 20 parts by weight of lecithin step;
80 to 90 parts by weight of the primary mixture, 3 to 5 parts by weight of sorbitan sesquioleate, and 5 to 10 parts by weight of a recovery efficiency increasing agent including glucamate are mixed at 50 to 70 ° C. to prepare a secondary mixture;
Mixing 85 to 95 parts by weight of the secondary mixture with 1 to 5 parts by weight of Pyrroloquinoline Quinone and 1 to 10 parts by weight of sodium gluconate to complete a foam control agent; Characterized by a directional press fit method. According to claim 1,
The excavator,
Characterized in that it comprises at least one of a rotary wash, a water hammer unit and a water jet for spraying a drilling composition containing water into the drilling hole. According to claim 2,
The drilling composition,
Sodium bicarbonate (Sodium bicarbonate) and corn cob (corn cob) and quartz sand (quatz sand) characterized in that it further comprises an abrasive containing at least one of, the directional press-in method. According to claim 1,
After the fourth step,
A fifth step of injecting a filler into the inner wall of the enlarged drilling hole; characterized in that it is included, the directional press-in method. According to claim 1,
In the fourth step,
Photographing the sludge remaining inside the drilling hole through a photosensor, and spraying the recovery agent while adjusting the injection pressure according to the amount of the remaining sludge to agglomerate the sludge generated in the drilling hole. , a directional press-in method. According to claim 5,
In the fourth step,
A sludge photographing step of photographing the sludge remaining inside the drilling hole through a photosensor;
A particle size determination step of determining the average particle size of the sludge;
And a particle size control step of adjusting the particle size of the sludge by adjusting the spray pressure of the injection unit when the average particle size exceeds the preset reference particle size. delete delete delete

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