KR20190131262A - Fast permeating method and system for grouting of weak ground - Google Patents

Abstract

The present invention provides a high speed permeating and injecting construction method for grouting of a weak ground and a system. The high speed permeating and injecting construction method for grouting of a weak ground, which is improved through grouting of a weak ground having a hydraulic boulder layer, improves a conventional liquid chemical casting and injecting construction method, is capable of high speed permeation of a grouting material through a multiple mixing chamber type front end device when improving the ground in a state having different flow speed and density of each stratum, is possible to perform a stable and wide range of the grouting without leakage of the grouting material in the hydraulic boulder layer, is possible to adjust the high speed permeation of the grouting material, and is capable of construction while widely adjusting integrity strength and integrity time of the grouting material.

Description

FAST PERMEATING METHOD AND SYSTEM FOR GROUTING OF WEAK GROUND}

The present invention relates to a high-speed penetrating injection method and a system for grouting to improve the ground by injecting a grout material according to the formulation of a predetermined chemical liquid or a chemical liquid and mortar into the ground of the soft ground of the same water layer flowing ground water, etc. will be.

Conventionally, a method and related apparatus for injecting chemical liquids, such as cement milk, mortar, quenching or finishing material, at the tip of an excavation shaft by excavating the ground to a certain depth with a drilling machine or the like as a ground injection method for improving the soft ground or forming the order walls. Has been.

When applying the conventional grouting method, when injecting two or more grout materials having different chemical properties because there is only one grout passage, the chemical solution may be premixed or one kind of grout material may be used. I have been working on grouting and grouting different kinds of grout material sequentially.

However, in the case of the ground having the same layer of moving water flowing underground, when the grout material is injected, the grout material is lost by the moving water, so it is necessary to shorten the solidification time in order to prevent the loss of such grout material. If the two chemicals are mixed and mixed in advance, there is a risk that the grout material is solidified during the injection passage as it is, and conversely, if the mixed mixture is adjusted to lengthen the solidification time, the grout material is penetrated into the ground other than the solidification purpose ground.

In this related art, prior art documents, such as Japanese Patent Application Laid-Open No. 1991-0018638, Japanese Patent Application Laid-Open No. 2001-0073875, Japanese Patent Application Publication No. 10-0463104, and the like are disclosed.

That is, conventionally, since curing time and high grain strength, which are characteristics of a chemical solution injected into the ground, are limitedly expressed in a relatively narrow range, depending on the condition or the permeability coefficient of the same layer of the ground under construction or a certain level, There was a problem in that it was insufficient to cope with the durable ground improvement according to various soil conditions.

The present invention improves the conventional liquid column injection method through the grouting of the soft ground including the hydraulic layer, through the multi-mixing chamber type tip device when the ground is improved in a state where the flow velocity and density of each layer is different. By enabling high speed penetration of grout material, it is possible to enable stable and extensive grouting without loss of grout material in the same layer. Also, it is possible to control the high speed penetration of grout material, and to control the construction of the grout material with broad control of high strength and freezing time. Provided is a high speed penetration injection method and system for grouting soft ground.

The high-speed penetration injection method according to an embodiment of the present invention is a high-speed penetration injection method for grouting soft ground according to the high-speed penetration of grout material into the ground of the ground including the hydraulic layer, the drilling and injection machine by Forming a perforated hole for the ground and installing a multi-mixing chamber type tip device for high-speed penetration of grout material into the ground through the formed drill hole; Preparing a first fluid and a second fluid by mixing the micro cement manufactured by the cement wet mill and various predetermined chemical liquids supplied from the chemical liquid tank in a grouting mixer; Supplying at least one of the first fluid and the second fluid prepared in the grouting mixer to the multi-mixing chamber type tip device at high pressure by a high pressure pump; And mixing the first fluid and the second fluid in the multi-mixing chamber type tip device to form the grout material so that the grout material is injected into the ground of the hydrophobic layer by high speed penetration.

Also preferably, the method may further include supplying the fluid compressed by the compressor to the multi-mixing chamber type tip device, wherein the grout material is injected by high-speed penetration into the pressure and the compressor. The first fluid and the second fluid are mixed in the multi-mixing chamber type tip by the pressure of the fluid supplied by the fluid to form the grout material, and the pressure of the compressed fluid supplied by the compressor is reduced. It is characterized in that the grout material is injected into the ground at high speed.

Also preferably, before the step of supplying the first fluid and the second fluid to the tip device is performed, the compressed fluid may be supplied to the tip device of the multi-mixing chamber type so that the compressed fluid is supplied. It is characterized in that it further comprises the step of cutting the ground is injected into the ground through the tip device.

On the other hand, the high-speed penetration injection method according to another embodiment of the present invention is a high-speed penetration injection method for grouting the soft ground according to the high-speed penetration injection of grout material to the ground of the ground including the hydraulic layer, drilling, injection machine Forming a perforated hole in the ground and installing a multi-mixing chamber type tip device for high-speed penetration of grout material into the ground through the formed drill hole; Preparing a first fluid and a second fluid by mixing the micro cement manufactured by the cement wet mill and various predetermined chemical liquids supplied from the chemical liquid tank in a grouting mixer; Preparing a mixed third fluid of the mortar prepared by the mortar mixing mixer and a predetermined chemical liquid; A third fluid prepared by the grouting mixer by a first high pressure pump and a second fluid by a second high pressure pump, respectively, at a high pressure to the multi-mixing chamber type tip device, and prepared by the mortar mixing mixer; Supplying fluid to the multi-mixing chamber tip device; And mixing the first fluid and the second fluid in the multi-mixing chamber-type distal end device to form a quick mixing mixture and to be mixed with the third fluid to infiltrate the ground of the hydrophobic layer by high-speed penetration.

Also preferably, the step of supplying the fluid compressed by the compressor to the multi-mixing chamber type tip device, and the step of allowing the high-speed osmosis to be injected, by the first high pressure pump and the second high pressure pump The first fluid and the second fluid are respectively mixed by the first fluid and the second fluid supplied in the multi-mixing chamber type tip device to form a quench mixture, and the third fluid is supplied by the compressor to the first fluid and the second fluid. While being mixed with the fluid, it is characterized in that to be injected by high-speed infiltration into the ground of the same layer by the pressure of the compressed fluid supplied by the compressor.

On the other hand, the high-speed penetration injection system according to an embodiment of the present invention, as a high-speed penetration injection system for grouting the soft ground according to the high-speed penetration injection of the grout material to the ground of the ground including the hydraulic layer, the drilling and injection machine A multi-mixing chamber type tip device installed in a drilling hole formed in the ground to perform high-speed penetration of grout material into the ground; A cement wet mill for producing micro cement; A chemical liquid tank for storing and supplying various predetermined chemical liquids; A grouting mixer for preparing a first fluid and a second fluid by mixing micro cement manufactured through the cement wet mill and various predetermined chemical liquids supplied from the chemical tank; And a high pressure pump for supplying at least one of the first fluid and the second fluid prepared in the grouting mixer to the multi-mixing chamber tip device at a high pressure, wherein the first fluid and the second fluid in the multi-mixing chamber tip device. The grout material is mixed with the fluid to form the grout material, and the grout material is injected into the ground of the same layer by high-speed penetration.

Preferably, the apparatus further includes a compressor for supplying the compressed fluid to the multi-mixing chamber tip device, wherein the multi-mixing chamber tip device is provided by the pressure of the high pressure pump and the pressure of the fluid supplied by the compressor. In the first fluid and the second fluid is mixed to form the grout material, characterized in that the grout material is injected into the ground of the hydrophobic layer by high pressure penetrated by the pressure of the compressed fluid supplied by the compressor .

On the other hand, the high-speed penetration injection system according to another embodiment of the present invention is a high-speed penetration injection system for grouting the soft ground according to the high-speed penetration injection of grout material to the ground of the ground including the hydraulic layer, drilling, injection machine A multi-mixing chamber type tip device installed in a boring hole formed in the ground to perform high-speed penetration of grout material into the ground; A first fluid by mixing a cement wet mill for preparing micro cement, a chemical tank for storing and supplying various predetermined chemical liquids, micro cement manufactured through the cement wet mill and various predetermined chemical liquids supplied from the chemical tank. And a grouting mixer for preparing a second fluid, a first high pressure pump for supplying the first fluid prepared in the grouting mixer to the multi-mixing chamber type tip device at high pressure, and a second fluid prepared for the grouting mixer at high pressure. A chemical liquid supply system including a second high pressure pump for supplying the multi-mixing chamber type tip device; And a mortar mixing mixer for preparing and preparing a third fluid by mixing mortar with a predetermined chemical liquid, a mortar pump for supplying a third fluid prepared in the mortar mixing mixer to a tip device of the multi-mixing chamber type, and a compressed fluid. And a mortar supply system including a compressor for supplying the multi-mixture chamber type tip device, wherein the first fluid and the second fluid supplied by the first high pressure pump and the second high pressure pump, respectively, By the pressure of the fluid supplied by the compressor while mixing with the first fluid and the second fluid by the pressure of the fluid supplied by the compressor while mixing in the tip device to form a quench mixture It is characterized in that the injection into the ground of the hydrophobic layer by high speed penetration.

The high-speed penetrating injection method and system for grouting soft ground according to the present invention is improved by the conventional liquid-liquid column injection method, and the flow rate and density of each layer is different in the improvement through the grouting of the soft ground including the hydraulic layer. When the ground is improved in the state, it is possible to make high speed penetration of the grout material through the multi-mixing room type tip device to enable stable and wide grouting without loss of grout material in the same layer, and to control the high speed penetration of the grout material. Therefore, there is an effect to allow the construction while controlling the high-strength strength and freezing time of the grout material extensively.

1 and 2 are views showing a high-speed penetration injection system for grouting soft ground according to an embodiment of the present invention.
3 is a flowchart for explaining a high-speed penetration injection method for grouting soft ground according to an embodiment of the present invention.
4 and 5 are views showing a high-speed penetration injection system for grouting the soft ground according to another embodiment of the present invention.
6 is a flowchart illustrating a high-speed penetration injection method for grouting soft ground according to another embodiment of the present invention.

Detailed description of the high-speed penetration injection method and system for grouting soft ground according to the present invention will be described with reference to the drawings.

First, a high-speed penetration method and system for grouting soft ground according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

1 and 2 are views showing a high-speed penetration injection system for grouting soft ground according to an embodiment of the present invention, Figure 3 is a high-speed penetration injection for grouting soft ground according to an embodiment of the present invention This is a flowchart for explaining the method.

As shown in Figure 1 and 2, the high-speed penetration injection system for grouting soft ground according to an embodiment of the present invention, a multi-mixing chamber type tip device 105, cement wet grinder 110, chemical tank 112, the grouting mixer 120, the injection pump 130, the flow rate / pressure gauge 140, the high pressure pump 150, the compressor 170, and the like.

The multi-mixing chamber type tip device 105 is a component that can be installed in a drilling hole formed in the ground by a drilling / injection machine to perform high-speed penetration of grout material into the ground.

The cement wet grinder 110 is a device for manufacturing micro cement obtained by pulverizing ordinary portland cement particles in micro units more finely. The micro cement is mixed with a chemical solution because the particles are very small, such as a chemical solution for fastening. It can be penetrated smoothly into the fine pores of the ground.

The chemical tank 112 is a component for storing and supplying various predetermined chemical liquids.

The chemical liquid tank 112 may include a tank for storing one chemical liquid or a plurality of tanks for storing various chemical liquids, respectively.

The grouting mixer 120 mixes a variety of predetermined chemical liquids supplied from the chemical liquid tank with the micro cement manufactured through the cement wet mill and injects the first fluid ① and the second fluid ② into the ground through the tip device. Each component is prepared.

Here, the first fluid ① and the second fluid ② are injection chemicals having different raw materials and compounding ratios, and different chemical properties, respectively. For example, the first fluid ① may be micro cement, a chemical retardant (gelling time retardant). ), A thickener (improving the viscosity of the chemical), water and the like can be prepared by mixing a predetermined ratio, the second fluid ② is prepared by mixing the synthetic silica, a curing accelerator, water and the like at a predetermined ratio. The first fluid ① and the second fluid ② may be injected in a mixed solution in a tip device of a multi-mixing chamber type to form a quick grout material.

The injection pump 130 is a device for providing a pressure to inject the first fluid into the tip device, the flow rate and pressure gauge 140 is the flow rate and pressure of the fluid injected by the injection pump 130 It is a device to measure and display.

On the other hand, the high pressure pump 150 is a device for pumping the fluid at a higher pressure than the injection pump is a device for pumping the second fluid at a high pressure to inject the tip device. Of course, the first fluid and the second fluid may be configured to supply the high pressure pump 150 to the tip device instead of the injection pump 130.

The compressor 170 is a device for compressing and discharging a fluid such as air, while mixing the first fluid and the compressed fluid injected by the injection pump 130 in the mixer 160 together with the strong pressure of the compressed fluid. It is a device to be injected into the tip device by the.

In the same layer, it is difficult to grout over a wide range due to the loss of grout material due to the influence of moving water. As described above, the first fluid and the second fluid are mixed in the tip device by using the compressor 170 to form an injection material for fastening. Thus, when injected into the ground, the strong pressure of the compressed fluid supplied by the compressor 170 serves to infiltrate the mixed grout material of the first fluid and the second fluid into the ground layer at high speed.

The compressor 170 supplies the compressed fluid to the tip device so that the compressed fluid is injected into the ground through the tip device before the first fluid and the second fluid are supplied to the tip device. It can also be used to cut the ground.

Meanwhile, a high-speed penetration injection method for grouting soft ground according to an embodiment of the present invention will be described with reference to the flowchart shown in FIG. 3 and the matters shown in FIGS. 1 and 2.

First, the drilling and injection machine (DM) is installed on the ground to be grouted, and the drilling holes H for the ground are formed by using the same (S110).

The drilling / injection machine DM may be provided with a lot RD for installing the tip device 105 and a swivel SW for rotating the lot RD and the tip device 105. Accordingly, the injection of the grout material using the tip device 105 is a rotary injection.

After forming the drilling hole (H), the analysis of the ground layer to be grouted and the grout material mixture ratio, etc. are determined using a predetermined sensor or measuring equipment (S120).

At this time, although not shown on the flowchart, before determining the grout material or the like, the cement wet grinder 110, the chemical liquid tank 112, the grouting mixer 120, the injection pump 130, the flow rate · The pressure gauge 140, the high pressure pump 150, the compressor 170, and the like are installed in advance.

The high-speed penetrating injection method of the grout material according to the present invention has a particularly greater effect when reinforcing the ground of the ground layer including the same layer in which the number of moving water, which is very difficult to construct by conventional grouting, exists.

As shown in FIG. 2, a sand layer SL, which is an even layer, and a clay layer CL beneath it, and a gravel layer PL, which is an even layer beneath the clay layer CL, exist in the state where the moving water flows below the ground surface. In the soil state of soil, soils of each strata can be analyzed to analyze the strata having different physical characteristics as described above, and select the type of tip device to use based on the analysis results of each strata. Through the selected tip device, the type of chemicals and the mixing ratio of each chemical are determined.

That is, the kind, the mixing | blending ratio, etc. of each of the said 1st fluid ① and the 2nd fluid ② mentioned above are determined.

As described above, when the analysis of the strata and the determination of the mixing ratio of the grout material are made, the selected tip device is installed underground through the drilling hole H by the drilling / injection machine DM (S130). Here, the tip device may be a double pipe or a triple pipe as the tip device of the multi-mixing chamber type as shown in FIG. 2, and since the first fluid ① and the second fluid ② are injected, it is preferable to use the double pipe. .

Here, in the multi-mixing room type tip device, 'multi' means double or triple pipe, and 'mixing room type' means a tip device having a mixing chamber in which two or more fluids can be mixed with each other in the double or triple pipe. It means.

As described above, after the multi-mixing chamber type tip device is installed, the first fluid ① and the second fluid ② are prepared according to the type and blending ratio of the grout material determined in step S120.

Referring to FIG. 1, the micro cement manufactured through the cement wet grinder 110 and various predetermined chemical liquids supplied from the chemical liquid tank 112 are mixed in the grouting mixer 120 and the first fluid ① and the first liquid as described above. 2 fluids ② are respectively prepared (S140).

The first fluid ① prepared in the grouting mixer 120 may be pumped by the injection pump 130 and supplied to the tip device (S150). The first fluid ① pumped by the injection pump 130 enters the mixer 160 through the flow / pressure gauge 140, and the compressed fluid is transferred from the mixer 160 toward the tip device or discharged from the compressor 170. Together with the tip device.

On the other hand, the second fluid ② prepared in the grouting mixer 120 may be pumped at a high pressure by the high pressure pump 150 may be supplied to the front end of the multi-mixing chamber type (S160).

For example, when the first fluid ① is a fluid prepared by mixing micro cement, a chemical liquid retardant (gelling time retardant), a thickener (improving the viscosity of the chemical liquid), water and the like at a predetermined ratio, the first fluid ① is transferred to the tip device. Since it does not harden in the process, it can be supplied to the tip device at a normal pressure through the injection pump 130 as described above, the second grout ② is mixed with the first fluid ① and the grout material is quenched Since the second fluid ② may be a fluid containing a chemical liquid that promotes gelation, in this case, the second fluid ② is tipped at a high pressure by using the high pressure pump 150 as described above. To be mixed with the first fluid ①.

In addition, as shown in FIG. 2, since the grout material is easily lost in the same water layer as the gravel layer PL or the sand layer SL, the first fluid ① and the second fluid ② are mixed as described above. The grout material is injected into the ground, but the grout material is injected into the ground at high speed by injecting the mixed grout material of the first fluid ① and the second fluid ② at a high pressure of the compressed fluid into the fluid compressed by the compressor 170. By allowing it to penetrate and inject therebetween, it is possible to ensure stable grouting without loss of grout material even in the same layer (S180).

In this case, the compressed fluid supplied by the compressor 170 may be supplied after the first fluid ① and the second fluid ② are supplied to the tip device, and the compressed fluid of the compressor 170 may be supplied as in step S170. The first fluid ① injected by the injection pump 130 and the mixer 160 may be mixed together to be supplied to the multi-mixing chamber type tip device.

Therefore, the first fluid ① and the second fluid ② are mixed in the multi-mixing chamber type tip device by the pressure of the high pressure pump 150 and the pressure of the fluid supplied by the compressor 170, thereby providing the grout material for quick charging. While forming, the grout material may be injected into the ground of the same layer by high pressure by the pressure of the compressed fluid supplied by the compressor 170.

For example, as shown in Figure 2, when the front end device 105 of the double pipe as a multi-mixing chamber type tip device, the peripheral pipe 20 and the outer pipe 30 of the double pipe 105 is spaced apart from each other A second space portion 28 is formed inside the circumferential tube 20, and a third space portion 38 is formed between the circumferential tube 20 and the outer tube 30, respectively. The first fluid ① may be injected into the 28, and the second fluid ② may be injected into the third space 38.

At this time, the circumferential tube 20 has a lower circumferential tube discharge hole 23 at the lower side, and has a circumferential tube discharge hole 25 at the side, and the outer tube 30 has the lower circumferential tube at the lower portion. The outer tube lower discharge hole 33 is provided at a position corresponding to the discharge hole 23, and the outer tube lower discharge hole 37 is provided at a position corresponding to the circumferential observation part discharge hole 25 at a side thereof. A mixing chamber 34 may be formed between the circumferential tube 20 and the outer tube 30 at a lower portion thereof.

Accordingly, in the double pipe 105, the first fluid ① of the second space portion 28 is ejected through the circumferential observation part discharge hole 25 by the high pressure of the compressed fluid of the compressor 170 and the third space. The first fluid ① is mixed with the second fluid ② of the part 38 and injected into the ground through the external observation part discharge hole 37, and the first fluid ① is applied to the high pressure of the compressed fluid of the compressor 170. By the circumferential tube lower discharge hole 23 and is mixed in the mixing chamber 34 with the second fluid ② of the third space portion 38 and the outer tube lower discharge hole 33 at the bottom of the outer tube 30. Through the high-speed penetrating injection to the lower through it can be a high-speed penetrating injection to the side through the auxiliary discharge hole (not shown) of the outer tube side.

The high-speed penetration injection method and system according to an embodiment of the present invention described above with reference to FIGS. 1 to 3 are suitable for the high-speed penetration injection of the grout material mixed by using two fluids. Although the embodiment of the present invention, the high-speed penetrating injection method and system according to the present invention is suitable for the high-speed penetrating injection of the grout material mixed by using three fluids, including the case of using a triple tube tip device, which will be described below. Do it.

With reference to Figures 4 to 6 will be described a high-speed penetration method and system for grouting soft ground according to another embodiment of the present invention.

4 and 5 are views showing a high-speed penetration injection system for grouting the soft ground according to another embodiment of the present invention, Figure 6 is a high speed for grouting the soft ground according to another embodiment of the present invention This is a flowchart for explaining the penetration injection method.

As shown in Figure 4 and 5, the high-speed penetration injection system for grouting the soft ground according to an embodiment of the present invention, largely chemical solution supply system 200 and mortar supply system 300, and multi-mixture chamber type The tip device 103 or 104 of the.

The chemical liquid supply system 200 generates and supplies two fluids that form the fastening mixture, respectively, and the mortar supply system 300 generates and supplies a mortar-based fluid mixed with the fastening mixture.

The chemical liquid supply system 200 includes a cement silo 202, a water tank 203, a cement wet mill 210, a chemical liquid tank 212, a grouting mixer 220, a flow rate / pressure gauge 222, 224, It may be configured to include a first high pressure pump 250 and the second high pressure pump (350).

Here, the multi-mixing chamber type distal end device 103 or 104 is installed in a drilling hole H formed in the ground by a drilling / injection machine DM to enable high-speed penetration of grout material into the ground. to be.

The cement silo 202 supplies cement which is a raw material of the micro cement manufactured by the cement wet grinder 210, and the water tank 203 supplies water.

The cement wet grinder 210 is a device for manufacturing micro cement obtained by pulverizing conventional portland cement particles in finer micro units.

The chemical liquid tank 212 is a component for storing and supplying various predetermined chemical liquids, and may include a tank for storing one chemical liquid, or may include a plurality of tanks for storing various chemical liquids, respectively.

The grouting mixer 220 mixes a variety of predetermined chemical liquids supplied from the chemical liquid tank 212 and the micro cement manufactured through the cement wet grinder 210 to be injected into the ground through the tip device. It is a component which prepares (1) and 2nd fluid (2), respectively.

Here, the first fluid ① and the second fluid ② may be substantially the same as the fluid used in the embodiment described above with reference to Figures 1 to 3, there may be a difference in the mixing ratio. Regardless of the blending ratio, the first fluid ① and the second fluid ② are mixed in the tip device to form a fastening mixture, thereby quickly solidifying the third fluid.

On the other hand, the first high pressure pump 250 and the second high pressure pump 350 is a device for pumping a fluid at a higher pressure than a conventional injection pump as a tip device by pumping the first fluid and the second fluid at high pressure, respectively It is a device to inject.

On the other hand, the mortar supply system 300, the aggregate feeder 301, cement silo 302, mortar mixing mixer 320, mortar pump 330, compressor 370, etc. as shown in FIG. It can be configured to include.

In FIG. 4, reference numerals 312 and 314 denote apparatuses for mixing and preparing chemical liquids such as bentonite and admixtures, respectively, as a chemical liquid mixer, and supplying various chemical liquids, such as the chemical liquid tank, and reference numeral 303 denotes a water tank. Reference numeral 340 denotes a flow rate and a pressure gauge.

The aggregate feeder 301 is a device for transferring fine aggregate (bm) to be entered into the mortar to the mortar mixing mixer 320, the cement silo 302 is a device for supplying the cement that is the main material of the mortar (302).

The mortar mixing mixer 320 mixes the fine aggregate and cement as described above, various chemical liquids provided by the chemical mixers 312 and 314, water supplied from the water tank, and the like in a predetermined blending ratio to form a third fluid ③. It is an apparatus to manufacture and prepare.

The mortar pump 330 is a pump for pumping the third fluid ③ prepared in the mortar mixing mixer 320 and transferred to the tip device.

In addition, the compressor 370 is a device for compressing and discharging a fluid such as air to inject the compressed fluid together with or separately from the third fluid injected by the mortar pump 330 into the tip device.

In the same layer, it is difficult to grout over a wide range due to the loss of grout material due to the moving water.The first fluid and the second fluid are supplied to the tip device by a high-pressure pump and mixed in the tip device to form a rapid mixing material. The strong pressure of the compressed fluid supplied by the compressor 370 when mixed with the fluid and injected into the ground causes the mixed grout material of the first fluid, the second fluid and the third fluid to infiltrate into the bed at high speed. It is to play a role.

When the compressor 370 is to cut the ground around the drilling hole by supplying the compressed fluid to the tip device so that the compressed fluid is injected into the ground through the tip device before each fluid is supplied to the tip device It can also be used.

4 and 5, the high-speed penetration injection system basically includes a tip device, a chemical supply system, and a mortar supply system. The tip device is selected as a triple tube, and the chemical solution supply system and the mortar supply are provided. It is not only possible to operate all the systems to generate the first to third fluids so that high-speed penetration injection into the ground through the triple pipe tip device is possible, and the tip device is selected as the double pipe and only the chemical liquid supply system is provided. It is also possible to operate to generate a first fluid and a second fluid to allow high-speed penetration injection into the ground through the tip of the double tube.

That is, the high-speed penetration injection system according to the embodiment shown in FIGS. 4 and 5 may be used for preparing, blending, and injecting grout material suitable for using a double pipe, or for preparing, blending, and injecting grout material suitable for using a triple pipe. Since both are possible, the method of using a double pipe, the method of using a triple pipe, etc. can be selectively performed according to the state of the strata to be reinforced.

Meanwhile, a high-speed penetration injection method for grouting soft ground according to another embodiment of the present invention will be described with reference to the flowchart shown in FIG. 6 and the matters shown in FIGS. 4 and 5.

As described above, the high-speed penetration injection system according to the present embodiment may also perform high-speed penetration penetration into the ground through a tip device such as a double pipe using a first fluid and a second fluid generated through the chemical liquid supply system 200. It is possible to use the first fluid and the second fluid generated through the chemical liquid supply system 200 and the third fluid generated through the mortar supply system 300 to inject high-speed penetration into the ground through a tip device such as a triple pipe. It is also possible to selectively perform both, but in the former case is similar to the case of the embodiment described with reference to Figures 1 to 3 above, the latter case will be described in more detail below. .

First, the drilling and injection machine (DM) is installed on the ground to be grouted, and the drilling hole H for the ground is formed by using the same (S210).

The drilling / injection machine DM may include a lot RD for installing the tip devices 103 and 104 and a swivel SW for rotating the lot RD and the tip device 105. Accordingly, the injection of the grout material using the tip device 103, 104 is a rotary injection.

After forming the drilling hole (H), by using a predetermined sensor or measuring equipment, the analysis of the ground layer of the ground to be grouted and the grout material mixture ratio and the like is determined (S220).

At this time, although not shown on the flowchart, the chemical liquid supply system 200 and the mortar supply system 300 as shown in FIG. 4 are previously installed before the determination of the grout material or the like.

The high-speed penetrating injection method of the grout material according to the present invention has a particularly greater effect when reinforcing the ground of the ground layer including the same layer in which the number of moving water, which is very difficult to construct by conventional grouting, exists.

As shown in FIG. 5, in the state where the moving water flows under the surface of the ground, the sand layer SL and the clay layer CL are present, and the clay layer CL is the gravel layer PL under the clay layer CL. In the soil state of soil, soils of each strata can be analyzed to analyze the strata having different physical characteristics as described above, and select the type of tip device to use based on the analysis results of each strata. Through the selected tip device, the type of chemicals and the mixing ratio of each chemical are determined.

That is, the kind, compounding ratio, etc. of each of the above-mentioned first fluid ①, second fluid ②, and third fluid ③ are determined.

As described above, when the analysis of the strata and the determination of the mixing ratio of the grout material are made, the selected tip device is installed underground through the drilling hole H by the drilling / injection machine DM (S230). Here, the tip device may be a triple pipe as a tip device of the multi-mixing chamber type as shown in FIG. 5.

After the multi-mixing chamber type tip device is installed as described above, preparation of the first fluid ①, the second fluid ②, and the third fluid ③ is made according to the type and blending ratio of the grout material determined in step S220.

Referring to FIG. 4, the microcement produced through the cement wet mill 210 and various predetermined chemical liquids supplied from the chemical tank 212 are mixed in the grouting mixer 220 to be mixed with the first fluid ① and the first agent. 2 fluids ② are each prepared (S240).

Then, the mixed third fluid ③ of the mortar and a predetermined chemical liquid prepared through the mortar mixing mixer 320 is prepared (S250).

The first fluid ① prepared in the grouting mixer 120 may be pumped at a high pressure by the first high pressure pump 250 to be supplied to the multi-mixing chamber type tip device, and the second fluid ② may be supplied to the second high pressure pump 350. By being pumped at a high pressure can be supplied to the multi-mixing chamber type tip device (S260).

The third fluid ③ prepared in the mortar mixing mixer 320 may be supplied toward the tip device by the mortar pump 330 (S270).

As shown in FIG. 5, since the grout material is easily lost in the same water layer as the gravel layer PL or the sand layer SL, the first fluid ①, the second fluid ②, and the third fluid ③ as described above. Is mixed to be injected into the ground, the fluid compressed by the compressor 370 is injected into the mixed grout of the first fluid ①, the second fluid ② and the third fluid ③ at a high pressure of the compressed fluid This allows the grout material to penetrate the ground at high speed so that the grout material can be injected without loss of the grout material even in the same layer (S290).

At this time, the compressed fluid supplied by the compressor 370 may be supplied after the first fluid ① and the second fluid ② are supplied to the tip device, and the compressed fluid of the compressor 370 may be supplied as in step S280. The third fluid ③ injected by the mortar pump 330 may be supplied to the front end of the multi-mixing chamber type.

Accordingly, the first fluid ① and the second fluid in the multi-mixing chamber type tip device by the pressure of the first high pressure pump 250 and the second high pressure pump 350 and the pressure of the fluid supplied by the compressor 370. ② and the third fluid ③ may be mixed to form a grout material for quenching, so that the grout material may be injected into the ground of the same layer by high-speed penetration by the pressure of the compressed fluid supplied by the compressor 370.

For example, as shown in Figure 5, when using the triple tube tip device 103 as a multi-mixing chamber type tip device, the central tube 10, the peripheral tube 20 and the outer tube 30 of the triple tube 103 ) Are spaced apart from each other, the first space portion 18 inside the central tube 10, the second space portion 28 between the central tube 10 and the peripheral tube 20, the peripheral tube 20 ) And a third space portion 38 are formed between the outer tube 30, a mortar-based third fluid ③ is injected into the first space portion 18, and the second space portion 28 is formed. The first fluid ② may be injected and the second fluid ② may be injected into the third space 38.

At this time, the central tube 10 is provided with a central tube lower discharge hole 13 in the lower portion and the central observation portion discharge hole 15 in the side, the circumferential tube 20 is the lower portion of the central tube discharge hole 13 Circumferential tube discharge hole 23 at a position corresponding to the circumferential tube discharge hole 23, and a circumferential observation part discharge hole 25 at a position corresponding to the central observation part discharge hole 15 at a side thereof; 30 has an outer tube lower discharge hole 33 at a position corresponding to the lower circumferential discharge hole 23 at the lower portion, and an outer tube lower portion at a position corresponding to the circumferential observation part discharge hole 25 at a side thereof. A discharge chamber 37 may be provided, and a mixing chamber 34 may be formed between the circumferential tube 20 and the outer tube 30 at a lower portion thereof.

Therefore, in the triple pipe 103, the third fluid ③ of the first space 18 is ejected through the central observation part discharge hole 15 by the high pressure of the compressed fluid of the compressor 370, and thus the second space. It is mixed with the first fluid ① of the part 28 and ejected through the circumferential observation part discharge hole 25, and is also mixed with the second fluid ② of the third space part 38 through the external observation part discharge hole 27. The high-speed penetration injection is made into the ground, and the third fluid ③ is ejected through the central pipe lower discharge hole 13 by the high pressure of the compressed fluid of the compressor 370, and the central pipe 10 and the peripheral pipe 20 Between the lower portion of the third fluid ③ is mixed with the first fluid ① and at the same time is ejected through the circumferential lower pipe discharge hole 23 is mixed in the mixing chamber 34 and the second fluid ② of the third space (38) Through the outer tube bottom discharge hole 33 at the bottom of the outer tube 30 is a high-speed penetration injection to the bottom and at the same time the auxiliary discharge hole 35 of the outer tube side In terms of year it can be a high-speed penetration injection.

In addition, although FIG. 5 also shows the case where another triple tube 104 is used for a front-end | tip apparatus, the triple tube of the form of reference numeral 104 is the center tube 10, the periphery tube 20, and the outer tube 30. As shown in FIG. ) Are spaced apart from each other, but the first space portion 18 and the second space portion 28 are in communication with each other and the third space portion 38, respectively, so that the third space portion 38 to be mixed with each other. In the upper portion of the heavy pipe 104, only the first fluid ① and the second fluid ② fluid are mixed without the third fluid and injected into the ground, while the third fluid ③ and the first fluid ① and the second fluid ② All of them have a feature that can be mixed to be injected into the ground.

Accordingly, in the triple pipe 104, the third fluid ③ of the first space 18 is ejected through the central observation part discharge hole 15 by the high pressure of the compressed fluid of the compressor 370, and thus the third space. The second fluid ② of the part 38 is mixed with the second discharge hole 35 and the outer tube lower discharge hole 33 is a high-speed penetration injection, respectively, and the first discharged through the circumferential observation portion discharge hole 25 The first fluid ① may be mixed with the second fluid ② of the third space 38 to allow high-speed penetration penetration into the ground through the outer observation part discharge hole 37.

As described above, the high-speed penetrating injection method and system for grouting soft ground according to the present invention, by improving the conventional liquid-liquid column injection method of each ground in the improvement through the grouting of the soft ground including the hydraulic layer When the ground is improved under different flow rates and densities, it is possible to allow high speed penetration of the grout material through the multi-mixing chamber type tip device to enable stable and extensive grouting without loss of grout material in the same layer. By controlling the penetration, there is a merit that the construction can be performed while controlling the high grain strength and the solidification time of the grout material extensively.

110, 210: cement wet mill, 112, 212: chemical tank
120, 220: grouting mixer, 130: injection pump
140, 240: flow rate and pressure gauge, 150, 250, 350: high pressure pump
170, 270: compressor, 202, 302: cement silo
320: mortar mixing mixer, 330: mortar pump

Claims (8)

As a high-speed penetrating injection method for grouting soft ground according to the high-speed penetrating injection of the grout material to the ground of the strata including the hydraulic layer,
A step of installing a multi-mixing chamber type tip device for forming a punching hole in the ground by a drilling / injection machine and injecting grout material into the ground through the formed drilling hole;
Preparing a first fluid and a second fluid by mixing the micro cement manufactured by the cement wet mill and various predetermined chemical liquids supplied from the chemical liquid tank in a grouting mixer;
Supplying at least one of the first fluid and the second fluid prepared in the grouting mixer to the multi-mixing chamber type tip device at high pressure by a high pressure pump; And
Allowing the grout material to be injected at high speed into the ground of the same layer while the first fluid and the second fluid are mixed to form the grout material in the multi-mixing chamber type tip device;
High-speed penetration method for grouting soft ground comprising a. The method of claim 1,
Supplying the fluid compressed by the compressor to the tip of the multi-mixture chamber type,
The grout material is injected through high-speed penetration,
Compression supplied by the compressor while the first fluid and the second fluid are mixed to form the grout material in the multi-mixing chamber type tip device by the pressure of the high pressure pump and the pressure of the fluid supplied by the compressor. The high-speed penetration method for grouting soft ground, characterized in that the grout material is injected into the ground of the hydraulic layer by the high pressure of the fluid. The method of claim 1,
Before the step of supplying the first fluid and the second fluid to the tip device is performed, the fluid compressed by the compressor is supplied to the tip device of the multi-mixing chamber type so that the compressed fluid passes through the tip device. High speed penetration injection method for grouting soft ground, characterized in that it further comprises the step of spraying the ground to cut the ground. As a high-speed penetrating injection method for grouting soft ground according to the high-speed penetrating injection of the grout material to the ground of the strata including the hydraulic layer,
A step of installing a multi-mixing chamber type tip device for forming a punching hole in the ground by a drilling / injection machine and injecting grout material into the ground through the formed drilling hole;
Preparing a first fluid and a second fluid by mixing the micro cement manufactured by the cement wet mill and various predetermined chemical liquids supplied from the chemical liquid tank in a grouting mixer;
Preparing a mixed third fluid of the mortar prepared by the mortar mixing mixer and a predetermined chemical liquid;
A third fluid prepared in the grouting mixer by a first high pressure pump and a second high pressure pump by a second high pressure pump, respectively, at a high pressure to the multi-mixing chamber type tip device and prepared in the mortar mixing mixer; Supplying fluid to the multi-mixing chamber tip device; And
Mixing the first fluid and the second fluid in the multi-mixing chamber type tip device to form a quick mixing mixture and to be mixed with the third fluid to infiltrate the ground of the hydrophobic layer by high-speed penetration;
High-speed penetration method for grouting soft ground comprising a. The method of claim 4, wherein
Supplying the fluid compressed by the compressor to the tip of the multi-mixture chamber type,
The step of injecting by high-speed penetration,
The first fluid and the second fluid supplied by the first high pressure pump and the second high pressure pump, respectively, are mixed in the multi-mixing chamber type tip device to form a quench mixture, by the pressure of the fluid supplied by the compressor. The third ground is mixed with the first fluid and the second fluid while the grouting of the soft ground characterized in that the high pressure penetrates into the ground of the same layer by the pressure of the compressed fluid supplied by the compressor High-speed penetration method. A high-speed penetrating injection system for grouting soft ground according to the high-speed penetrating injection of grout material into the ground of the strata including the same layer,
A multi-mixing chamber type tip device which is installed in a drilling hole formed in the ground by a drilling / injection machine for high-speed penetration of grout material into the ground;
A cement wet mill for producing micro cement;
A chemical liquid tank for storing and supplying various predetermined chemical liquids;
A grouting mixer for preparing a first fluid and a second fluid by mixing micro cement manufactured through the cement wet mill and various predetermined chemical liquids supplied from the chemical tank; And
A high pressure pump for supplying at least one of the first fluid and the second fluid prepared in the grouting mixer to the multi-mixing chamber type tip device at high pressure,
In the multi-mixing chamber type tip device, the first fluid and the second fluid are mixed to form the grout material, and the grout material is injected into the ground of the same layer by high-speed infiltration so as to grout the soft ground. High speed penetration injection system. The method of claim 6,
Further comprising a compressor for supplying the compressed fluid to the multi-mixing chamber tip device,
Compression supplied by the compressor while the first fluid and the second fluid are mixed to form the grout material in the multi-mixing chamber type tip device by the pressure of the high pressure pump and the pressure of the fluid supplied by the compressor. The high-speed penetration injection system for grouting soft ground, characterized in that the grout material is injected into the ground of the hydraulic layer by the high pressure of the fluid. A high-speed penetrating injection system for grouting soft ground according to the high-speed penetrating injection of grout material into the ground of the strata including the same layer,
A multi-mixing chamber type tip device which is installed in a drilling hole formed in the ground by a drilling / injection machine for high-speed penetration of grout material into the ground;
A first fluid by mixing a cement wet mill for producing micro cement, a chemical tank for storing and supplying various predetermined chemical liquids, micro cement manufactured through the cement wet mill and various predetermined chemical liquids supplied from the chemical tank. And a grouting mixer for preparing a second fluid, a first high pressure pump for supplying the first fluid prepared in the grouting mixer to the multi-mixing chamber type tip device at high pressure, and a second fluid prepared for the grouting mixer at high pressure. A chemical liquid supply system including a second high pressure pump for supplying the multi-mixing chamber type tip device; And
A mortar mixing mixer for preparing and preparing a third fluid by mixing mortar with a predetermined chemical liquid, a mortar pump for supplying a third fluid prepared in the mortar mixing mixer to a distal end device of the multi-mixing chamber type, and a compressed fluid Including a mortar supply system including a compressor for supplying a multi-mixing chamber type tip device,
The first fluid and the second fluid supplied by the first high pressure pump and the second high pressure pump, respectively, are mixed in the multi-mixing chamber type tip device to form a quench mixture, by the pressure of the fluid supplied by the compressor. The third ground is mixed with the first fluid and the second fluid while the grouting of the soft ground characterized in that the high pressure penetrates into the ground of the same layer by the pressure of the compressed fluid supplied by the compressor High speed penetration injection system.

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