KR101200103B1 - Grouting adjustable gravity - Google Patents

Abstract

The present invention relates to a groundwater deep grouting grouting agent, which overcomes the specific gravity difference of the grouting agent injected and filled between the inner casing and the excavated hollow wall so that the grouting agent is fixed without flowing down the groundwater or floating on the water surface. It is intended to shield cracks in crushing zones.
The grouting agent for the groundwater core tablet which can control the specific gravity according to the present invention is formed by mixing a grouting main material consisting of at least one of cement, mud, and silicon and a specific gravity control agent for controlling the specific gravity of the grouting main material, and inserted into the groundwater well. It is sprayed between the outside of the inner casing and the inner wall of the groundwater well to form a grouting barrier that does not sink or float in the groundwater.
The grouting main material is a first grouting main material consisting of at least one of cement and mud having a specific gravity greater than that of groundwater, and the specific gravity regulator is mixed with the first grouting main material to have bubbles to prevent the first grouting material from sinking in the groundwater. Styrofoam, aerogels, urethane foam is at least one selected from the first gravity control agent.
The grouting main material is a second grouting main material including silicon having a lighter specific gravity than the groundwater, and the specific gravity regulator is mixed with the second grouting main material so that the second grouting main material does not float on the surface of the groundwater. It is a second specific gravity regulator.

Description

Grouting agent for groundwater core tablet with specific gravity control {GROUTING ADJUSTABLE GRAVITY}

The present invention relates to a groundwater heart grouting agent that can control specific gravity, and more particularly, to a groundwater heart grouting agent capable of controlling specific gravity such that the grouting agent does not sink below groundwater or floats in groundwater by adjusting the specific gravity of the grouting agent. It is about.

As is well known, subsurface water refers to water that fills or flows through gaps between underground strata and rocks. In recent years, various pollutants are mixed with groundwater and the quality of groundwater is deteriorating. .

In general, although the groundwater harvesting device is not shown in the drawings, the outer rock is excavated to the rock layer where the weathered rock layer ends by using a rocker of a predetermined thickness, and then out casing of the large diameter installed to prevent the collapse of the weathered rock layer. After the casing, excavate the rock bed again to penetrate the water vein and then the in casing installed to prevent the inflow of surface water, and the inflow of soil water or foreign substances in the ground where the ground water is moved to the lower part of the casing. A strainer pipe which is installed to be prevented, concrete that is cured by injecting concrete to prevent the inflow of foreign substances such as surface water into the space between the encasing and the groundwater inner wall, and a heart pump installed inside the encasing; Is installed to be connected to the cardiac pump and by the cardiac pump It consists of pumping pipes through which groundwater to be pumped is moved.

In addition, in order to improve the maintenance of the water quality deteriorated due to the groundwater contaminated groundwater, all of the existing casings inserted inside the core are drawn out and removed, and then the inside of the core is kept in a hollow state. The construction has been carried out through the groundwater deep grouting grouting device and grouting method, which has been previously patented as -33646.

However, this technology had to draw out all the casings inserted in the inside of the heart to the outside, and in the process, there was a case that the accident occurred in the heart of the heart, and there was a case of republication. There is a need for a technique for grouting between encasing and heart cavity.

There is a patent application No. 1999-7203 (Invention: Groundwater cardiac packer, water vein cleaning device, and water vein cleaning method using liquefied carbon dioxide), which was invented and applied by the present inventor using the conventional technology as described above. In the related art, a plurality of holes may not be punctured in the incasing pipe, thereby causing a problem in that the freezing shielding film should be installed inside the incasing pipe, and thus, the inflow of groundwater cannot be smoothly shielded.

In order to solve such a problem, there is a patented invention No. 10-0460127 (hole perforation and freeze shielding film forming apparatus for grouting injection).

The patent is to drill a plurality of holes at regular intervals by using a drill in the encasing pipe, and to use a packer to form a freeze shielding film between the encasing pipe and the deep hole wall. In addition, after forming the freeze shielding film, a grouting solution is injected between the encasing pipe and the cardiac hole wall to form a lining wall cement, thereby improving workability and work efficiency. This greatly improves the quality and reliability of the product.

However, the 10-0460127 is composed of a separate unit having a first configuration (drill, etc.) for drilling holes in the casing, and a second configuration (grouting injection holes, etc.) for grouting injection through the perforated holes. After inserting the composition into the heart and drilling the hole, when the drilling of the hole is completed, the first composition must be withdrawn from the heart and the second composition must be inserted and grouting, which is cumbersome. The disadvantage is that the air is long.

In addition, there is a problem that the grouting hole is opened and the grout material is introduced into the interior.

In addition, since both the drilling and grouting work of the grouting hole is made by the manager's sense, all work such as drilling and grouting takes a long time, and there is a problem in that work defects occur.

In addition, when the hole is drilled in the casing, chips cut in the casing are generated, and the chips remain in the periphery of the drill and inside the casing, and the chips are caught in the driving part such as the drill, thereby preventing malfunction and damage of the driving part such as the drill. There are also disadvantages that occur.

On the other hand, the grouting agent is used cement or cement and bentonite mixture (for example, mixing 97 ~ 98% by weight of cement, bentonite 2-3% by weight).

Bentonite is used to replenish by expansion and swelling the volume of cement shrinkage in order to prevent cracking that may occur due to shrinkage during the curing of the cement by utilizing the property of expansion and swelling upon absorption.

Cement (or mud, or cement and mud mixture, etc.) is included between the inner casing and the excavation wall after the perforation is performed in the inner casing inserted into the groundwater well, and refers to everything that sinks into the groundwater due to its high specific gravity. When the grouting agent, which is described as a representative material, is injected, the cement has a heavier specific gravity than water, so that the grouting cannot be formed because the cement cannot be supported between the inner casing and the excavation wall and flows downward.

In addition, when silicon is the main material of grouting, silicon has a specific gravity and is turned off in the groundwater, so that the grouting is not formed and the hydrophilicity is weak due to the characteristics of silicon, and thus, the solid grouting is not achieved.

In addition, when the crushing zone is formed in the excavation hole wall, the grouting material is continuously flowing along the crack groove of the crushing zone, there is a problem that the order shielding is not achieved.

Registered Patent No. 1089665 Registered Patent # 0848395 Patent Publication No. 10-2010-0122749 Patent Registration No. 10-0487825 Patent Registration No. 10-0552363

The present invention is to solve the problems as described above, to overcome the specific gravity difference of the grouting agent injected between the inner casing and the excavated hollow wall to adjust the specific gravity so that the grouting agent does not flow down the groundwater or float in the groundwater The purpose is to provide a groundwater grouting agent.

Another object of the present invention is to prevent the grouting agent from being lost through the fracture zone when the fracture zone is formed on the excavation hole wall.

The grouting agent for the groundwater core tablet which can control the specific gravity according to the present invention is formed by mixing a grouting main material consisting of at least one of cement, mud, and silicon and a specific gravity control agent for controlling the specific gravity of the grouting main material, and inserted into the groundwater well. It is characterized in that it is sprayed between the outside of the inner casing and the inner wall of the groundwater wells to form a grouting barrier that does not sink or float in the groundwater.

The grouting main material is a first grouting main material consisting of at least one of cement and mud having a specific gravity greater than that of groundwater, and the specific gravity regulator is mixed with the first grouting main material to have bubbles to prevent the first grouting material from sinking in the groundwater. Styrofoam, aerogels, urethane foam is characterized in that the first specific gravity control agent.

The grouting main material is a second grouting main material containing silicon having a lighter specific gravity than groundwater, and the specific gravity regulator is mixed with the second grouting main material so that the second grouting main material does not float on the surface of the groundwater. At least one second specific gravity control agent.

According to the grouting agent for the groundwater core tablet which can control the specific gravity according to the present invention, the specific gravity of the grouting agent is adjusted to the groundwater level through the specific gravity control agent even when the main material (such as cement or mud or cement and mud mixture) that is heavier than the groundwater is used. Injecting the grouting agent into the groundwater core allows the grouting agent to harden at the injection site without flowing down the groundwater, thereby forming a solid grouting wall.

In addition, even if the main material (silicon, etc.), which has a lighter specific gravity than groundwater, is used, the specific gravity of the grouting agent is adjusted to the groundwater level through the specific gravity control agent. The wall can be formed and the hydrophilicity of the main material (silicon) having a weak hydrophilicity can be imparted to form a solid grouting wall.

In addition, the specific gravity control agent can prevent the loss of the grouting agent by blocking the inlet side of the crushing zone formed in the ground, thereby reducing the amount of grouting agent used and saving the cost.

The grouting agent for groundwater core tablets which can control the specific gravity according to the present invention is made by mixing a grouting main material such as cement, mud, silicon, and a specific gravity control agent for controlling the specific gravity of the grouting main material.

Cement, mud, silicon, silica, etc., which are used as the grouting main materials are well-known products used as grouting agents, and thus, detailed descriptions of each function will be omitted. However, in order to help the present invention, the grouting main material may be selected based on specific gravity. The first grouting main material (such as cement or mud or cement and mud mixture), which is heavier than groundwater, and the second grouting material (silicon, etc.), which is lighter than groundwater, and the specific gravity control system is also suitable for the first and second grouting materials. The first specific gravity regulators (bubble, etc.), the second specific gravity regulators (mud, cement, silica sand, etc.). That is, the first grouting agent is a mixture of the first grouting main material (such as cement or mud or cement and mud mixture) and the first specific gravity control agent (bubble, etc.), and the second grouting agent and the second grouting main material (silicon, etc.) 2 Specific gravity regulators (mud, cement, silica sand, etc.) are mixed.

Hereinafter, the first and second grouting agents will be described separately.

1. A first grouting agent (mixing the first grouting main material (such as cement or mud or a mixture of cement and mud) with the first specific gravity regulator (bubble, etc.)).

Since the specific gravity of the first grouting material (cement, etc.) is heavier than that of the groundwater, the first specific gravity regulator is mixed with the first grouting material by using the characteristics of bubbles (pores) to increase the specific gravity of the first grouting agent to the groundwater level. In this case, the specific gravity of the first grouting main material is heavier than that of the groundwater, but the specific gravity of the first grouting agent is lowered to the groundwater level by mixing the first specific gravity regulator (bubble, etc.).

The first specific gravity control agent can be used for all having a bubble, for example, a foam material powder of foamed styrofoam, airgel, urethane foam is used.

As a method for processing the bubble material in the form of a powder, various methods such as swelling injection, cutting while extruding, and powdering through a crushing device may be generally adopted, and thus detailed description thereof will be omitted.

The mixing ratio of the first grouting main material mixed with the foam material is mainly intended to prevent the flow of the first grouting agent from flowing into the groundwater by making the specific gravity of the first grouting agent substantially equal to the specific gravity of the groundwater. When the grouting agent is adhered to the inner casing outer surface and the ground water well hole wall, the grouting agent does not occur even if the specific gravity is high (heavy) in the mixing process.

The first grouting main material and the first specific gravity regulator are 55-65% by volume: 35-45% by volume. The ratio is for constructing a solid grouting wall and preventing the first grouting main material from sinking in the groundwater. When the first specific gravity regulator is mixed at 35% by volume or less, the first grouting material is settled and mixed at more than 45% by volume. In this case, the amount of the first grouting main material is low, so that a solid grouting wall cannot be formed, and the first grouting main material floats in the groundwater.

In addition, the first specific gravity control agent may be used pulp or fiber material containing the foam material instead of the foam material powder.

Pulp or fiber materials, such as the specific gravity of the material itself is lighter than the groundwater can be used without foam or mixed with the foam.

In particular, the pulp or fiber material is piled up sequentially to the inlet side of the crack portion of the crushing zone in the ground so that the grouting agent is not excessively introduced into the crushing zone.

Of course, the pulp or fiber material has a problem that the specific gravity is lowered due to the function of the groundwater, but by the pre-treatment to prevent the absorption of moisture, which is commonly known, the same effect as the foam material may be obtained.

2. Second grouting agent (second grouting main material (silicone, etc.) and second gravity control agent (mud, cement, silica sand, etc.))

The second grouting material (silicon, etc.) has a specific gravity that is lighter than that of the groundwater. Therefore, the second specific gravity regulator is used to make the specific gravity of the second grouting material (silicon, etc.) heavy, such as mud, cement, silica sand (mud and silica sand, etc.). A mixture may be possible, and the mixing ratio at this time is freely controlled).

The second grouting main material and the second specific gravity regulator are 65-75% by volume: 25-35% by volume. The ratio is for constructing a solid grouting wall and preventing the second grouting material from floating in the groundwater. When the second specific gravity regulator is mixed at 25% by volume or less, the second grouting material floats on the groundwater surface and is more than 35% by volume. When mixed with, the amount of the second grouting main material is low, so that a hard grouting wall cannot be formed and the second grouting material sinks into the groundwater.

In addition, the second grouting main material may be glycerin, agar, wax, or the like having a property of forming a predetermined viscosity while melting by heat. Glycerin, agar, and wax are usually hard or soft in the state of hardness, but when heat is applied, they can be pumped into the grouting section through an insulated tube using a pump, and the grouting agent contacts the groundwater. In this case, the temperature is drastically lowered and the hardening or ointment proceeds to shield the inner casing outer surface and the groundwater well wall. In this process, when the second grouting main material, which is heated and maintained in a liquid state, is injected into the grouting section by mixing a second specific gravity control agent, the second grouting main material having a low specific gravity does not float on the surface of the groundwater but is in the grouting section. Hardening or ointment at will be able to obtain a shielding effect.

For example, agar is dissolved in boiling water and maintained in a liquid state until around 25 ° C. When agar is sprayed for grouting at this temperature, the ground water is cured immediately after the spray to form a shielding wall because the temperature of the groundwater is 15 ° C.

Even in this case, the ratio of the second specific gravity control agent may be the same as that of silicon.

The mixing ratio of the first and second grouting main materials and the first and second weighting regulators is not limited to the above-mentioned ratios as an example, and the viscosity, specific gravity, and watertightness after shielding of the first and second grouting main materials are included. It is determined according to the type and specification of the first and second grouting agents, such as the retention capacity, and the specific gravity of the first and second grouting agents does not sink in the groundwater and does not float and is adjusted to 0.9999 to 1.0001, preferably 1.0. .

On the other hand, when cement or mud is used as the main grouting material, the grouting agent having the proper specific gravity and viscosity is processed by mixing the foam material with the proper viscosity by adding the appropriate water and kneading the grouting main material. When a chemical substance such as urethane or epoxy is used, the second grouting agent with specific gravity is controlled by mixing with the first specific gravity control agent without mixing water and kneading. Naturally, the liquid silicone material may be used by mixing with mud and stirring.

The grouting method using the grouting agent for groundwater core feeling that can control the specific gravity of the present invention, for example, to form an injection hole in the inner casing, the injection device (injection device patent application to the present inventors well-known injection device is used Grouting agent is injected between the inner casing and the heart cavity wall through the injection hole.

Groundwater will be present between the inner casing and the heart well wall, and the grouting agent is filled between the inner casing and the heart well wall to form a grouting wall. At this time, the grouting main material of the grouting agent forms a grouting wall, and the specific gravity regulator is connected to the grouting main material to prevent the grouting main material from sinking below the groundwater and floating on the groundwater surface.

Meanwhile, the first and second grouting agents generally take the form of a space having a width of about 25 mm formed between the inner casing outer section and the groundwater well wall and are primarily shielded by the first and second grouting agents. When the water level inside the inner casing rises instantaneously, the groundwater level formed on the upper part of the shielding section formed between the outer casing outer section and the groundwater well wall is raised so that the first and second specific gravity regulators are included. Even if the shielding is done with the first and second grouting agents, the shielding section may be lowered due to the water level difference. Thus, the upper and lower shielding sections are processed to balance the water level inside and outside the inner casing. Shielding can be achieved smoothly, as well as to continue.

<Examples>

Material

end. Grouting Agent

-1st grouting agent:

60% by volume cement as the first grouting material and 40% by volume styrofoam containing air bubbles as the first specific gravity regulator

-Second grouting agent:

70% by volume silicon as the second grouting material, 30% by volume mud as the second specific gravity regulator

2. Mix.

The first and second grouting materials and the first and second specific gravity regulators were put in a stirrer, respectively, and evenly mixed to prepare the first and second grouting agents.

3. Characteristic test

In order to test the grouting agent according to the present invention, a test body (the inner casing and the outer casing were made transparent so that the naked eye can be observed) was manufactured using an inner casing and an outer casing (hollow wall of the core), and between the inner casing and the outer casing. Was filled with water, and the first and second grouting agents were injected, respectively.

While injecting the first and second grouting agents, the first and second grouting agents were visually checked to see if the water sank or floated on the water surface. As a result, it was confirmed that both the first and second grouting agents did not sink or float.

As a comparative example for confirming the characteristics of the present embodiment, the first and second specific gravity control agents were injected under the same conditions by using cement and silicon as a grouting agent, and the cement was confirmed to flow down to the bottom of the groundwater. It was confirmed to float above the groundwater surface.

Claims (5)

A grouting main material consisting of cement, mud, silicone, glycerin, agar, wax, honeycomb, and a specific gravity control agent for controlling the specific gravity of the grouting main material are mixed, and the outer and ground water of the inner casing inserted into the groundwater well A grouting agent for groundwater depth-adjustable groundwater, characterized in that it is sprayed between the inner walls of the wells to form a grouting barrier that does not sink or float in the groundwater. The grouting main material of claim 1, wherein the grouting main material is a first grouting main material composed of at least one of cement and mud having a specific gravity greater than that of groundwater, and the specific gravity regulator is mixed with the first grouting main material so that the first grouting main material does not sink in the groundwater. Styrofoam, airgel, urethane foam having a bubble to prevent the specific gravity control groundwater heart grouting agent, characterized in that the first specific gravity control agent. The grouting main material of claim 1, wherein the grouting main material is a first grouting main material made of at least one of cement and mud having a specific gravity greater than that of groundwater, and the specific gravity regulator is mixed with the first grouting main material so that the first grouting main material does not sink in the groundwater. A grouting agent for groundwater core tablets, characterized in that the pulp or fiber material to prevent specific gravity. The method of claim 1, wherein the grouting main material is a second grouting main material including silicon having a lighter specific gravity than groundwater, and the specific gravity regulator is mixed with the second grouting main material to prevent the second grouting main material from floating above the groundwater surface, A grouting agent for groundwater wells, characterized in that the second specific gravity control agent is at least one selected from cement and silica sand. The method of claim 1, wherein the grouting main material is a second grouting main material which forms a grouting barrier by cooling and condensing by ground water after dissolving by heating at least one of glycerin, agar, wax, honeycomb lighter than groundwater, The specific gravity control agent is a second specific gravity control agent that is mixed with the second grouting main material and is selected from at least one selected from mud, cement, and silica sand to prevent the second grouting material from floating on the surface of the groundwater. My.