KR101708740B1 - Apparatus for injecting viscoelasticity grout having viscoelasticity green grouting method by using the same - Google Patents

Abstract

The present invention relates to a viscoelastic grout reinjection apparatus and an eco-friendly ground reinforcement method using the same. More particularly, the present invention relates to a viscoelastic grout reinjection apparatus, And the viscoelastic grout material is injected into the ground through the grout re-injection hole, so that the filling of the voids and underground cavities is significantly improved The present invention relates to a viscoelastic grout reinjection apparatus and an eco-friendly ground reinforcement method using the same, which enables eco-friendly ground reinforcement satisfying all the soil and all the ground conditions.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a viscoelastic grout reinjection apparatus and an eco-friendly ground reinforcement method using the same.

The present invention relates to a viscoelastic grout reinjection apparatus and an eco-friendly ground reinforcement method using the same. More particularly, the present invention relates to a viscoelastic grout reinjection apparatus, The viscoelastic grout material is injected into the ground through the grout re-injection hole to fill or infiltrate the voids or underground cavities in the ground, Reinforced grout reinjection apparatus and an eco-friendly ground reinforcement method using the same.

Generally, a grouting method for reinforcing the ground by injecting grout material into a gap or a gap of soil or rock is widely used.

In the conventional grouting method, a grout reinforcement hole is drilled, a general grout material containing cement and water is prepared, and then a general grout material is injected through the grout reinforcement hole to reinforce the ground.

In the conventional grouting method, there is no method for confirming the internal state of the ground. Therefore, there is a disadvantage in that it is not possible to grasp how much grout reinjection amount is needed beforehand, and since the internal state of the ground can not be accurately grasped, Because the pressure could not be controlled, there was a problem that the ground was disturbed in the case of high pressure injection, and in the case of low pressure injection, the underground cavity could not be filled completely and the ground reinforcing effect was lowered.

In addition, conventional grout materials used in the conventional grouting method are diluted in ground water and are subject to day-to-day water pollution, resulting in contamination of groundwater and loss of material, resulting in lower strength and thus insufficient long-term stability.

Korean Registered Patent Publication No. 10-1057487, Summary, Fig. 2, Claim 1

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art as described above, and it is an object of the present invention to provide a method of inserting a grout re-injection hole and a photographing hole in a ground to be reinforced, The viscoelastic grout material was injected into the ground through the grout re-injection hole, and the filling of the voids and underground cavities was significantly improved. The present invention provides a viscoelastic grout re-injection device capable of reinforcing eco-friendly ground, and an eco-friendly ground reinforcement method using the same.

Another object of the present invention is to provide a grout material which satisfies both ultrahigh viscosity, fluidity, resistance to water separation, permeability and self-leveling at the same time, The present invention provides a viscoelastic grout reinjection apparatus and an eco-friendly ground reinforcement method using the same, in which the number of piercing grout reinjection holes is reduced by broadening the ground reinforcement range,

In order to accomplish the above object, the viscoelastic grout material according to the present invention is characterized in that it comprises: a ground irradiator for photographing an internal state of the ground through a camera of a probe tube for image photographing inserted after the ground penetration, A controller for predicting the amount of grout reinjection and determining the mixing ratio of the grout based on the ground condition, and a controller for determining the mixing ratio of the grout using the mixing ratio determined by the controller to control viscosity and fluidity of each soil condition after primary mixing of the materials. A method of preparing a viscoelastic grout according to the present invention comprises the steps of: injecting a viscoelastic grout material into the grouting material to form a viscoelastic grout; Check injector at the entrance And the like.

In order to achieve the above object, an eco-friendly ground reinforcement method using a viscoelastic grout reinjection apparatus according to the present invention comprises a first step of perforating a grout re-injection hole and an image photographing hole, A third step of inserting a camera into the image photographing hole to photograph a ground condition and inspecting the ground condition; and a third step of determining a material mixture ratio so as to be suitable for the irradiated ground conditions, thereby obtaining a viscoelastic grout material A fifth step of injecting the viscoelastic grout material so as to penetrate into the ground through the grout reinforcement hole and photographing the internal state of the ground through the camera of the image pickup hole; A sixth step of drawing the casing of the re-injection hole and the camera of the image photographing hole by a predetermined height, A seventh step of drilling a new grout re-injection hole adjacent to the route re-injection hole, an eighth step of blending the viscoelastic grout material by the appropriate material blending ratio, and the step of blending the viscoelastic grout material through the grout re- A tenth step of infiltrating the inside of the ground to infiltrate the inside of the ground, a tenth step of drawing the casing of the grout re-injection hole by a predetermined height, and the eleventh step of repeatedly performing the seventh and tenth steps, The method comprising the steps of:

In the present invention, a grout re-injection hole and a photographing hole are drilled in a ground to be reinforced and a camera is inserted into a photographing hole to photograph the ground condition and the ground condition is investigated. And injects viscoelastic grout material into the ground through the grout re-injection hole to fill or penetrate the pores or underground cavities of the ground to reinforce the ground.

The present invention minimizes ground disturbance by allowing a viscoelastic grout material satisfying both ultrahigh viscosity, fluidity, water-splitting resistance, permeability and self-leveling to be injected into a grout re-injection hole at no pressure or ultra low pressure The ground reinforcement range is wide, which reduces the number of holes in the grout re-injection hole. It does not cause material separation, so it has excellent long-term stability and minimizes environmental pollution.

FIG. 1A is an experimental view showing that the viscoelastic grout material used in the present invention has excellent water-insolubility, viscosity and high fluidity. FIG.
FIG. 1B is an experimental view showing that the viscoelastic grout material used in the present invention has excellent air retention and permeability.
FIG. 2A is a view showing a constitution of a viscoelastic grout reinjecting apparatus according to the present invention. FIG.
FIG. 2B is a flowchart showing an eco-friendly ground reinforcement method using a viscoelastic grout reinjection apparatus according to the present invention.
FIG. 3A is a configuration diagram of a verticality correction plate according to the present invention; FIG.
FIG. 3B is a schematic view showing a single-hole drilling method applied to the present invention. FIG.
3C is a schematic view showing a double pipe drilling method applied to the present invention;
4A to 4F are views showing an eco-friendly ground void reinforcement method using a viscoelastic grout reinjection device between a steel composite sheet pile and a pier foundation foundation pile.
5A to 5E are views showing a method of reinforcing a pier foundation inner ground using a viscoelastic grout reinjection apparatus.
6A to 6F are views showing a method for reinforcing an underground cavity using a viscoelastic grout reinjection apparatus.
7 is a view showing a method for reinforcing an eco-friendly ground by using a viscoelastic grout reinjection apparatus according to the present invention between a steel composite sheet file and a pail basic pile file.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The present invention relates to a method of filling a void of a viscoelastic (ultra high viscosity and fluidity) grout material different from the rehology characteristic of a conventional grout material such as a cement slurry, a cement paste, a mortar, a concrete, It is used to reinforce the ground.

First, the viscoelastic grout used in the present invention will be described.

The viscoelastic grout material may be formed by mixing a modifier composition for grout, a cement and water, or may be formed by mixing a modifier composition for grout and Hicrete and water.

The cement may be used alone, or at least one of soil, slag, fly ash, clay, rock powder, and waste concrete may be added to the cement.

The modifier composition for the grout is used as the modifier composition for the liquid grout and the modifier composition for the powdery grout.

The modifier composition for a liquid grout according to the present invention forms a special viscous structure in water called micelle due to intermolecular interaction when mixed with the cement mixture and water to improve the rheology property of the grout material . Such a special viscous structure with a micelle structure exhibits rheological properties different from those of conventional polymeric water-based separators and controls the viscoelasticity of water without being adsorbed to cement particles or the like. Therefore, the liquid ultra-high viscosity and fluidity grout materials formed by mixing the grout modifier composition, Hicrete, cement and water have ultra high viscosity, good flowability at the same time, and have a resistance to water separation (underwater insolubility).

The modifier composition for a liquid grout as described above may be used in combination with an alkylammonium tosylate which imparts and controls the rheological property of the grout material, an emulsifying aid which imparts stock stability and low temperature stability, a defoamer for removing water, and a pH adjusting agent.

The emulsifying aid serves to keep the modifier composition for grout residue stable, especially at low temperatures.

The pH adjusting agent adjusts the concentration of pH in the aqueous solution in which the modifier composition for grout is mixed with water.

As described above, the liquid phase modifier composition for grout formed by mixing the alkylammonium tosylate, the emulsifying aid, the water, the defoamer, and the pH adjusting agent maintains a state of stability at a low temperature.

The viscoelastic grout material formed by mixing the modifier composition for a liquid grout with the cement mixture and water has high fluidity, high viscosity, and early strength characteristics, and therefore has excellent properties such as material separation resistance, water resistance, Characteristics, curing period, and so on. The viscosity of the viscoelastic grout material decreases with increasing temperature at a temperature of 10 to 50 DEG C, but maintains a viscosity of 10,000 mPas or less. In addition, the liquid ultra-high viscosity and fluidity grout material is also excellent in filling property due to high fluidity.

The modifier composition for a powdered grout according to the present invention is a powdery surfactant-based (alkyltosylate) additive prepared by coating an alkylammonium tosylate coating solution on a builder for solidifying materials and effectively removing moisture.

The modifier composition for a powdered grout according to the present invention is a surfactant-based powder-type special additive having a pseudo-polymer property which is not a polymer but increases viscosity like a polymer.

The alkylammonium tosylate coating solution for forming the modifier composition for powdered grout controlling the rheological properties is prepared by mixing an alkylammonium tosylate imparting and controlling the rheological property of the grout material and an emulsifying agent for imparting the raw solution stability and low temperature stability An adjuvant, and water. At this time, the pH adjusting agent for adjusting the pH and the defoamer for removing the foaming agent are selectively mixed.

In the case where the Alkyl Ammonium Tosylate coating solution comprises an emulsifying auxiliary agent and water, the amount of the alkylammonium tosylate is 10 to 40 wt%, the emulsifying aid is 1 to 10 wt% The water is mixed in an amount of 50 to 89% by weight.

When the alkylammonium tosylate coating solution is further mixed with a pH adjusting agent and a defoaming agent, the alkylammonium tosylate is contained in an amount of 10 to 40 wt%, the emulsifying aid is 1 to 10 wt%, the water is more than 49.4 wt% To less than 89 wt.%, The pH adjusting agent is greater than 0 wt.% To less than 0.1 wt.%, And the defoamer is mixed from greater than 0 wt.% To less than 0.5 wt.%.

In the alkylammonium tosylate, the alkyl group preferably has at least one carbon composition within the range of C12-C22. Specific examples of the alkyl group include ester quaternary ammonium salts, trialkylammonium salts, polyquaternium, etc. . ≪ / RTI >

The builder for a solidified material mixed with an alkylaluminium tosylate coating solution for forming a modifier composition for a powdery grout controlling the rheology characteristic according to the present invention may contain a divalent metal oxide and may be mixed with the alkylammonium tosylate coating solution The water contained in the coating liquid is removed and the coating liquid formed in the liquid phase is pulverized.

At this time, the builder for solidification material may include a mixed powder containing at least one or more bivalent metal oxides which exothermically react with water contained in the alkylammonium tosylate coating solution, A silicon dioxide powder which alleviates an exothermic reaction generated by the mixed powder, an aluminum oxide powder which acts as a quick-setting agent when mixed with the alkylammonium tosylate coating solution and which improves strength when mixed with cement, and And sulfur trioxide powder which prevents the powder from aggregating when mixed with the alkylammonium tosylate coating solution.

Also, in the embodiment of the present invention, the mixed powder is composed of calcium oxide powder and magnesium oxide powder, wherein the builder for the solidified material has 15 to 45% by weight of the silicon dioxide powder, 0.5 to 15% (The specific surface area ㎠ / g, Brain method) of not more than 5.0% by weight, the calcium oxide powder is contained in an amount of 30 to 50% by weight, the sulfur trioxide powder is contained in an amount of 0.5 to 10% .

On the other hand, when the alkylammonium tosylate coating solution and the builder for the solidifying material are mixed, moisture of the bivalent metal oxide and the coating liquid chemically react to evaporate the water naturally by the reaction heat generated or generated. In this case, Is expressed by the following equation (1).

At this time, the condition of heat generation is characterized by being 50 DEG C or higher.

The alkylammonium tosylate coating solution may contain more than 0 wt% to 30 wt% of the alkylammonium tosylate coating solution, the builder for the solidification material may include 70 to 100 wt% of the builder for the powdery grout, By weight.

The modifier composition for a powdery grout composition has a rheology characteristic of a viscoelastic grout material for controlling the viscoelasticity of water without adsorbing to cement particles or the like by forming a special viscous structure (micelle structure) in water by interaction between molecules Viscosity, fluidity, separation resistance, viscoelasticity, self-leveling, air-wall retention, early curability, etc.).

The cement and the anti-caking agent may be mixed with the modifier composition for a powdered grout according to the present invention to form a special cement which is a viscoelastic (ultra-high viscosity and fluidity) grout material. In the case of construction and civil engineering work, Can be applied differently.

That is, the viscoelastic (ultra-high viscosity and fluidity) grout special cement formed by mixing the modifier composition for a powdered grout according to the present invention may be used for filling the inside filling structure such as for filling in a steel pipe, The modifier composition for the powdery grout can be mixed in an amount of 3 to 6% by weight, 94 to 96% by weight of cement and 0.5 to 1% by weight of anti-caking agent. When mixing the cement, at least one of soil, slag, fly ash, clay, rock powder and waste concrete can be added and mixed, Cement is one of general Portland cement (OPC cement), OPC cement / slag (slag cement), OPC cement / fly ash cement, and the special cement for viscoelastic grout material formed in this way exhibits the characteristics of water- .

The viscoelastic grout prepared by mixing the modifier composition for powder type grout controlling the rheology characteristic according to the present invention with a mixture of high solubility and OPC cement / slag (10% by weight / 90% by weight to 90% by weight / 10% by weight) It shows the water separation characteristics of special cement for reuse.

(10 wt% / 90 wt% to 90 wt% / 10 wt%) of a high modifying agent and an OPC cement / fly ash for controlling the rheology characteristic according to the present invention, It shows the water separation characteristics of special cement for reuse.

As described above, the present invention provides a builder for a solidifying material containing a divalent metal oxide mixed with an alkylammonium tosylate coating solution which is formed in a liquid phase, and is capable of easily pulverizing an alkylammonium tosylate coating solution for controlling rheological properties (Ultra high viscosity and fluidity) grout material by a special cement for grout material containing the modifier composition for powder type grout controlling the rheology characteristic capable of satisfying all the rheological characteristics at the same time, So that it is possible to reinforce the ground.

FIG. 1A is an experimental state diagram showing that the viscoelastic grout material used in the present invention has excellent water-insolubility, viscosity and high fluidity.

As shown in FIG. 1A, the first beaker shows the low viscosity grout used in the present invention, the second beaker shows the medium used grout used in the present invention, and the third beaker is used in the present invention Of the grout for high viscosity.

However, it can be seen that the general cement paste (fourth beaker) has no water separating property and is much less viscous than the low viscosity grout material (first beaker) used in the present invention.

For example, about 1 wt.% Of a grout modifier composition, 99 wt.% Of a cement admixture and water may be mixed to form a viscoelastic grout material, that is 30 g (3% water) of a modifier composition for grout, It can be seen that 1Kg of water and 2Kg of cement (50% of water / cement ratio (W / C)) can be mixed to form viscoelastic grout material, which is highly resistant to fluidity and water separation.

FIG. 1B is an experimental state diagram showing that the viscoelastic grout material used in the present invention has excellent air retention and permeability.

As shown in FIG. 1B, the first case is an experimental state showing that the viscoelastic grout material is superior to the wall retaining property, and the second case and the third case are experimental conditions showing that the viscoelastic grout material has excellent permeability. In the first case, divide into two spaces by a partition, inject stones and sand into one space, inject viscoelastic grout into the other space, and immediately remove the partition, the two spaces become one space , Viscoelastic grout material, stone, and sand are not mixed with each other.

In the second case and the third case, the compartments are divided into two spaces, and one space is filled with gravel, stone, sand, and the other space is filled with a viscoelastic grout material. The two spaces become one space, and viscoelastic grout material can be seen penetrating into the pores of the opposite gravel layer. The viscoelastic grout material used in the second case has a high viscosity characteristic, and the viscoelastic grout material used in the third case has a low viscosity characteristic.

In addition, the viscoelastic grout material used in the present invention minimizes water pollution by minimizing leaching of basic materials of cement due to high viscosity, and has a characteristic that the turbidity problem due to the behavior of cement is remarkably reduced. pH, turbidity, and fish toxicity to determine water pollution and environmental impacts.

First, the test bath should be clean glass with a volume of 3 l beaker and maintain the water temperature at 20 ° C ± 2 ° C. They are suitable for survival conditions in the laboratory such as water temperature and food handling, and they are used as gypsies which are healthy in size and can be collected many times at once. The pH meter is installed inside the beaker to measure the pH concentration according to the elapsed time. Turbidity was measured by collecting samples at each elapsed time.

i) pH measurement results

First, the results of measurement of pH concentration by introducing 50 g and 100 g of each of the conventional cement grout material and viscoelastic grout material containing 4% of the modifier composition for grout according to the present invention into a 3-liter beaker will be described.

The large difference between the conventional cement grout material having a water / cement mixing ratio of 50% and the viscoelastic grout material having a water / cement mixing ratio of 50% is about 11 to 12 pH in the conventional cement grout material, It can be seen that the viscoelastic grout material has a concentration value of 9 to 10 pH. This indicates that the release rates of the basic substances contained in the cement are significantly different from each other, and that the viscoelastic grout material according to the present invention is contained in the cement It can be seen that the emission rate of basic substances is remarkably slow and small, so that the environmental pollution and the influence on the marine life are minimized.

ii) Results of turbidity measurement

Next, the results of measuring the turbidity of the conventional cement grout material and the viscoelastic grout material containing 4% of the modifier composition for grout according to the present invention, were put into a 3-liter beaker in an amount of 50 g and 100 g, respectively.

In the case of conventional cement grout with water and cement mixing ratio of 50%, the turbidity was measured after 10 minutes since it was impossible to measure the turbidity due to rapid leaching of cement immediately after the cement was introduced.

In the case of the conventional cement grout material, abrupt cement elution occurs with a turbidity value of 200 to 220 after 10 minutes of input, and in the case of the viscoelastic grout according to the present invention, turbidity of 4 to 10 turbidity It was found that a very small amount was eluted to the extent of having a value. Therefore, in the case of the viscoelastic grout material according to the present invention, it can be seen that a very small amount of the viscoelastic grout is eluted and no instantaneous impact is given.

The viscoelastic grout material according to the present invention is characterized in that it has the characteristics of water-flood separation and high viscosity compared with general cement grout material, so that there is no water phenomenon occurring in general cement grout material. In case of general cement grout material, But the viscoelastic grout material according to the present invention alleviates the elution of the groundwater into the groundwater and reduces or prevents the pollution of the soil and the groundwater.

FIG. 2A is a view illustrating a construction of a viscoelastic grout reinjection apparatus according to the present invention, and FIG. 2B is a flowchart illustrating an eco-friendly ground reinforcement method using a viscoelastic grout reinjection apparatus according to the present invention.

2A, the viscoelastic grout reinjection apparatus according to the present invention is a device for inspecting a ground condition by photographing an internal state of a ground through a camera 22 of a probe tube 21 for image photographing inserted after perforation of the ground, A controller 50 for predicting the amount of grout reinjection based on the soil condition irradiated by the soil applicator 60 and determining a material mixture ratio; A blender (40) for preparing a viscoelastic grout material customarily grounded according to the ground conditions by using a material blending ratio determined by the controller (50) to control viscosity and fluidity, and a blender (40) for blending the viscoelastic grout material Is injected through the injection pipe 11 to reinforce the inside of the ground, and the injection amount and pressure of the viscoelastic grout material are injected at the inlet of the injection pipe 11 And an injector (30) for checking and adjusting.

The puncture proof grout material of the blender 40 and the viscoelastic grout material injected by the injector 30 are kept at a constant temperature so as to automatically control the internal temperature of the blender 40 and the injector 30 And further comprises a corrector 35.

The temperature compensating portion is further provided inside the intermediate portion and the end portion of the injection pipe 11 inserted into the ground so that the viscoelastic grout material can maintain the constant temperature even during the passage through the injection pipe 11 having a long length .

As such, the present invention allows the viscoelastic grout material to be injected in an optimal state since the viscoelastic grout material adjusts the temperature to maintain a constant temperature at all times. In addition, since the temperature is corrected to maintain an appropriate temperature even in a low-temperature winter or a high-temperature summer, it is possible to perform construction regardless of temperature and season.

As the temperature correction method, various methods can be used. For example, the temperature of the air can be adjusted to a constant temperature by a steam system.

When the soil condition irradiated by the soil irradiator (60) has a large porosity, the controller (50) adjusts the material blending ratio so as to lower the viscosity and fluidity, and the soil condition irradiated by the soil irradiator When the porosity is small, the mixing ratio of the materials is adjusted so as to increase viscosity and fluidity.

The inside of the injection tube 11 is formed by being coded with a fluorine resin having a small interface or a small surface tension. When the length of the hose of the injection pipe 11 is long, self injection resistance pressure is generated and the grout repulsive flow is slowed by the grout rubbing. Therefore, if the inside of the injection pipe 11 is coated with the fluorine resin, Can be lowered and the viscosity flow can be prevented from slowing down.

A verticality compensating plate which is horizontally disposed on the ground surface and corrects the verticality by guiding the crushing casing to be vertically downwardly penetrated is used in the present invention in order to correct and manage the verticality in the ground drilling.

 As shown in FIG. 3A, the verticality compensating plate includes a plate horizontally disposed on the surface of the ground and having a predetermined thickness, a plate having a predetermined length downward at a central portion of the plate at right angles to the plate, And a plurality of through holes formed in the plate to reduce the weight of the vertical plate and to discharge the perforated water out of the ground surface.

Now, an eco-friendly ground reinforcement method using the viscoelastic grout reinjection apparatus according to the present invention will be described.

As shown in FIG. 2B, the eco-friendly ground reinforcement method using the viscoelastic grout reinjection apparatus according to the present invention includes a first step (SlO) of drilling the grout re-injection hole and the image shooting hole, A third step S14 of inspecting the ground condition by photographing the internal state of the ground by inserting a camera into the image photographing hole, a third step S14 of filling the image taking hole with water, A fourth step (S16) of blending the viscoelastic grout material by determining the material blending ratio so that the viscoelastic grout material is mixed with the viscoelastic grout material so that the viscoelastic grout material penetrates into the ground through the grout reinforcement hole (10) A fifth step S18 of photographing the internal state of the ground via the camera 22 of the grouting material injection hole 20, A seventh step (S24) of drilling a new grout injection hole adjacent to the grout re-injection hole in the first step (S10), and a seventh step (S24) of blending the viscoelastic grout material by a suitable material blending ratio (S26), a ninth step (S28) of injecting the viscoelastic grout material so that the viscoelastic grout material is penetrated into the ground through the grout reinforcement hole, a tenth step (S28) of drawing the casing of the grout reinforcement hole by a predetermined height (S30), and an eleventh step (S32) of reinforcing the inside of the ground by repeating the seventh and tenth steps several times.

The above-mentioned reinforcement in the ground includes void penetration of the ground and underground cavity filling.

The maintaining of the constant temperature state in the fourth step is to keep the internal temperature of the blender 40 constant through the temperature compensator 35 so that the viscoelastic grout material blended in the blender 40 maintains a constant temperature.

In the fifth step, when the viscoelastic grout material is injected into the ground, the temperature is adjusted through the temperature corrector 12 provided in the intermediate position and the end of the injection pipe 11, Keep the temperature.

Therefore, the present invention may perform temperature correction through the temperature compensator 35 and the temperature corrector 12 so as to maintain a constant temperature during the process of being injected into the ground as well as the process of blending the viscoelastic grout material.

A method of puncturing the grout re-injection hole and the image photographing hole in the first step will be described. In the first step, the grout re-injection hole and the method of perforating the image shooting hole can be performed in various ways. For example, a perforating operation can be performed by various methods such as single-end perforation, double-perforation, triple-perforation, and perforated perforation.

When the perforation is performed by using the various perforation methods as described above, the verticality compensating plate as shown in FIG. 3A is horizontally arranged on the ground surface, and then the ceiling casing (or pipe) vertically passes through the vertical walk- So that the verticality can be corrected.

Here, the single-end perforation method and double-end perforation method will be described.

FIG. 3B is a schematic state view of drilling a grout re-injection hole and an image shooting hole using a single pipe drilling method, and FIG. 3C is a schematic state diagram of drilling a grout re-injection hole and an image shooting hole using a double pipe drilling method.

As shown in FIG. 3B, the single pipe drilling method is a drilling method in which one drilling tool is formed by using one casing, and the drilling water flows into the casing to discharge the slime to the outside of the casing. The perforation method has a high puncture speed, but it may cause disadvantage that the ground is disturbed in soft ground.

As shown in FIG. 3C, the dual pipe drilling method forms one cloth tool by using one outer casing and one inner rod, and the drilling water flows into the inner pipe, As shown in Fig. The double pipe drilling method has the advantage of minimizing the ground disturbance although the drilling speed may be slower than the single pipe drilling method.

In the case of the quadrupole drilling method, a perforation receiving pipe, an air pipe, a grout material pipe, and a suction pipe for suction may be used.

Next, various methods of performing eco-friendly ground reinforcement using the viscoelastic grout reinjection apparatus according to the present invention will be described.

4A to 4F illustrate an eco-friendly ground void reinforcement method using a viscoelastic grout reinjection device between a steel composite sheet file and a bridge pier foundation file.

(A) The first ball (grout re-injection ball) and the second ball (video shooting ball) are punctured

As shown in FIG. 4A, grout reinjection hole 10 and image photographing hole 20 are drilled in the ground between the steel composite sheet file and the bridge pier foundation file (S10). The casing is introduced into the grout re-injecting hole (10), and a transparent probing tube is introduced into the image capturing hole (20).

(B) Primary mixing of water filled and viscoelastic grout material

FIG. 4B is a state diagram for a portion between the pier foundation file and the steel composite sheet file in FIG. 4A for the sake of understanding. The perforated grout re-injection hole 10 and the image capturing hole 20 are filled with water (S12). Since the viscoelastic grout material used in the present invention has water separating ability and fluidity, the water filled in the grout re-injection hole 10 acts as a lubricant when injecting the viscoelastic grout material, so that the viscoelastic grout material reaches the fine pores of the ground It becomes possible to penetrate tightly. In addition, the image capturing hole 20 is filled with clear water for capturing a clear image.

On the other hand, the blender 40 primarily blends a viscoelastic grout material. In addition, the temperature compensator 35 during mixing can operate so that the viscoelastic grout material maintains the constant temperature .

(C) In- ground imaging

Then, the ground surveyor 60 inspects the ground condition by inserting the camera into the probe pipe 21 of the image capture hole 20 (S14). Since the photographing is performed so that the actual pore size inside the ground can be measured at the time of imaging, the ground surveyor 60 can measure the void ratio of the gravel layer in the ground using the photographed image data. The controller 50 predicts the injection amount and determines the material mixture ratio using the measured gap ratio.

(D) Ground condition Secondary form of custom grout material

The blender 40 secondary blends the viscoelastic grout material according to the material blending ratio determined by the controller 50 to prepare a viscoelastic grout material meeting the ground conditions (S16).

(E) Grounding conditions Custom-made viscoelastic grout material 1st injection and ground internal imaging

The viscoelastic grout material suitable for the ground condition is injected from the injector 30 into the viscoelastic grout injection hole 10 through the injection pipe 11 as shown in FIG. 4C, and the inside of the ground is imaged (S18).

Since the viscoelastic grout material has good permeability to ground porosity due to its high fluidity, it is excellent in penetration of the ground porosity even if it is injected with no pressure or only ultra low pressure when injecting. Therefore, it is possible to reinforce ground porosity without ground disturbance.

(F) Repeat injection of viscoelastic grout for ground condition

As shown in FIG. 4D, a series of processes such as injection of a viscoelastic grout material, drawing of a casing of a grout reinjection hole (for example, drawing can be performed for 1 m each), and internal ground imaging are repeatedly performed (S20).

(G) Injection completion and casing withdrawal

If grout reinjection is performed to the surface of the ground as shown in FIG. 4E, the casing of the grout re-injection hole is pulled out, and finally, the image is taken, and the probe tube of the camera and the image shooting hole is pulled out (S22).

Therefore, as shown in FIG. 4F, reinforcement is completed between the steel composite pile sheet and the pier foundation file by ultra-low pressure injection using a liquid ultra-high viscosity and fluidized grout material.

Next, Figs. 5A to 5E are views showing a method of reinforcing a pier foundation inner ground using a viscoelastic grout reinjection apparatus.

The method of reinforcing the pier foundation inner pile using the viscoelastic grout reinjection apparatus shown in Figs. 5A to 5E is substantially the same as the case of reinforcing between the steel composite pile sheet and pier foundation pile explained in Figs. 4A to 4F The difference is that only the sand gravel layer is reinforced by injecting the viscoelastic grout material in the inside ground of the bridge pier when the pier foundation inner ground is a sand gravel layer having a relatively large gap.

As described above, the eco-friendly ground reinforcement method using the viscoelastic grout reinjection apparatus according to the present invention is more effective in reinforcing the ground of the sand gravel layer.

6A to 6F are views showing a method of reinforcing an underground cavity using a viscoelastic grout reinjector.

The method of reinforcing the underground cavity using the viscoelastic grout reinjection apparatus shown in FIGS. 6A to 6F is characterized in that, when there is a limestone cavity in the ground where the cast-in-place pile or embedded pile is placed, the limestone cavity is filled to reinforce the ground .

First, as shown in FIG. 6B, the grout reinjection ball and the imaging ball are perforated around the cast-in-place pile or the embedded pile, and clear water is substituted for the imaging ball for a clear image capture. Then, the camera is inserted into the imaging tube and the inside of the ground is imaged by inserting the camera. Using the photographed image data, the ratio of the limestone cavity is calculated, the injection amount is predicted, and the blending ratio of the material is determined so as to be suitable for the penetration of the limestone to formulate and prepare the viscoelastic grout material. In some cases, the temperature compensator 35 may be operated to maintain the constant temperature of the viscoelastic grout material.

As shown in FIG. 6C, a predetermined injection amount is injected into the ground surrounding the limestone cavity with a special pump, the casing of the grout injection hole is pulled out, and the inside of the ground is photographed to check the infiltration state of the ground around the limestone cavity.

As shown in FIG. 6D, the process of infiltrating and infiltrating the viscoelastic grout material suitable for limestone cavity infiltration is repeatedly performed, so that the limestone cavity is filled as shown in FIG. 6E.

7 is a view showing a method of reinforcing an eco-friendly ground by using a viscoelastic grout reinjecting apparatus according to the present invention between a steel composite sheet file and a pail base file.

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. The disclosed embodiments are intended to illustrate the invention rather than to limit the invention. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

11: injection tube 12: temperature correction section
21: a probe tube 22: a camera
30: injector 35: temperature compensator
40: blender 50: controller
60: Ground Investigation Machine

Claims (12)

A subsurface irradiator for inspecting soil conditions by imaging the internal state of the soil through a camera of a probe tube inserted after the ground penetration;
In order to predict the amount of grout reinjection based on the ground conditions investigated by the above-mentioned ground surface irradiator and to determine the mixing ratio of the materials, when the ground condition irradiated by the grounding apparatus has a large porosity, the mixing ratio of materials is adjusted so as to lower the viscosity and fluidity A controller for adjusting a mixing ratio of the material to increase the viscosity and fluidity when the ground condition irradiated by the ground surface irradiator has a small porosity;
A blender for preparing a viscoelastic grout material customarily grounded according to the ground conditions by firstly blending the materials, and secondarily blending the blended materials using the blend ratio determined by the controller to control the viscosity and flowability of the blend according to the ground conditions;
The viscoelastic grout material is injected through an injection pipe coated with fluorine resin having a low interface or a small surface tension by different pressures depending on the ground condition to reinforce the inside of the ground and the injection amount and pressure of the viscoelastic grout material are checked at the inlet of the injection pipe An injector for regulating the flow of the fluid;
A verticality compensating plate disposed horizontally on the ground surface for correcting and managing the verticality at the time of the ground penetration and correcting the verticality by guiding the tunnel casing vertically downward; And
And a temperature compensator that automatically adjusts the internal temperature of the blender and the injector so that the viscoelastic grout material of the blender and the viscoelastic grout material injected by the blender maintain a constant temperature,
Wherein the verticality correction plate comprises: A vertical walking vocally formed at a central portion of the plate at a right angle to the plate and formed at a predetermined length downward to guide the vertically lower casing vertically downward, And a plurality of through holes formed in the plate to discharge the perforated water out of the ground surface,
The verticality correction plate is horizontally disposed on the ground surface to correct and manage the verticality of the grout re-injection hole and the image photographing hole, and the casing of the grout re-injection hole and the casing of the image shooting hole are provided on the verticality correction plate And the perforated vertical grooves are perforated vertically. delete delete delete delete The method according to claim 1,
The viscoelastic grout material may be selected from the group consisting of Alkyl Ammonium Tosylate which imparts and controls the rheological properties of the viscoelastic grout material, an emulsifying aid which gives stability to the raw liquid and low temperature, a defoamer which removes water, Wherein the composition is a modifier composition for a liquid grout. The method according to claim 1,
The viscoelastic grout material is a powdery surfactant-based (alkyltosylate) additive for a powdery grout material, which is produced through a production process of coating an alkylammonium tosylate coating solution on builders for solidifying materials and effectively removing moisture Of the viscoelastic grout reinjection device. The method of claim 7,
Wherein the alkylammonium tosylate coating solution forming the modifier composition for the powdered grout is mixed in an amount of more than 0 wt% to 30 wt% and the builder for the solidification material is mixed in an amount of less than 70 wt% to 100 wt% . The method of claim 7,
When the Alkyl Ammonium Tosylate coating solution is formed to contain an emulsifying auxiliary agent and water, the alkylammonium tosylate is contained in an amount of 10 to 40 wt%, the emulsifying aid is contained in an amount of 1 to 10 wt% Is mixed in an amount of 50 to 89% by weight. The method of claim 7,
When the alkylammonium tosylate coating solution is further mixed with a pH adjusting agent, an emulsifying auxiliary agent and a defoaming agent, the alkylammonium tosylate is 10 to 40 wt%, the emulsifying aid is 1 to 10 wt%, the water is 49.4 wt% By weight to less than 89% by weight, the pH adjusting agent is more than 0% by weight to less than 0.1% by weight, and the defoaming agent is mixed from 0% by weight to less than 0.5% by weight. The ground penetrator is used to investigate the ground condition by photographing the internal state of the ground through a camera of a probe tube inserted after the penetration of the ground, and a method of predicting the amount of grout reinjection based on the ground conditions investigated by the grounding apparatus, When the ground condition irradiated by the ground surface irradiator is large, the mixing ratio of the material is adjusted so as to lower the viscosity and fluidity when the porosity is large, and when the ground condition irradiated by the ground surface irradiator has a small porosity, And a control unit for controlling the mixing ratio of the viscoelastic grout material according to the ground condition to adjust the viscous and fluidity for each of the ground conditions after the materials are primarily mixed, A blender for preparing the viscoelastic grout Is injected through an injection pipe coated with a fluorine resin having a small interface or a small surface tension by different pressures depending on the ground condition, and the injection amount and pressure of the viscoelastic grout material are checked at the inlet of the injection tube and adjusted. By means of a viscoelastic grout reinjector,
A first step of perforating the grout re-injection hole and the image photographing hole,
A second step of filling the grout re-injection hole and the image photographing hole with water,
A third step of inserting a camera into the image photographing hole to photograph an internal state of the ground to investigate the ground condition,
Alkyl Ammonium Tosylate, which gives and controls the rheological properties of viscoelastic grout materials by determining the compounding ratio to suit the irradiated ground conditions, emulsifying auxiliaries that give the raw material stability and low temperature stability, water and foam (Alkyl (meth) acrylate), or a pH adjusting agent, or a powdery surfactant system (alkyl (meth) acrylate) prepared by a production process of coating an alkyl aluminum tosylate coating solution on a builder for solidifying materials and effectively removing moisture A fourth step of blending a viscoelastic grout material composed of a modifier composition for a powdery grout,
Injecting the blended viscoelastic grout material into the ground through the grout reinjection hole and photographing the internal state of the ground through the camera of the image pickup ball;
A sixth step of drawing the casing of the grout re-injection hole and the camera of the image photographing hole by a predetermined height,
A seventh step of drilling a new grout material injection hole adjacent to the grout re-injection hole in the first step,
An eighth step of blending the viscoelastic grout material according to the appropriate material blending ratio,
Injecting the blended viscoelastic grout material into the ground through the grout reinforcement hole;
A tenth step of drawing the casing of the grout re-injection hole by a predetermined height, and
And eleventh step of repeating the seventh and tenth steps to reinforce the inside of the ground,
Wherein the first step and the seventh step are performed by arranging the verticality correction plate horizontally on the ground surface to correct and manage the verticality of the grout re-injection hole and the image photographing hole, Wherein the casing is pierced by vertically penetrating the vertical walking toilet provided on the verticality compensating plate to reinforce the eco-friendly ground reinforcement using the viscoelastic grout reinjecting device. delete

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