JP4458574B2 - A device for generating a liquid solidified material and feeding it to the tip of the solidified pile construction machine and a method for generating a liquid solidified material and feeding it to the tip of the solidified pile construction machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention generates a liquid solidified material (eg, cement milk) used in a solidified pile construction method, etc. and supplies it to the tip of the solidified pile construction machine, and generates a liquid solidified material at the tip of the solidified pile construction machine. It relates to the method of sending .
[0002]
[Prior art]
In the solidified pile construction method, cement milk with a predetermined mixing ratio (water cement ratio) manufactured in a kneading plant is fed to the tip of the solidified pile construction machine by a pressure feeding hose. The water cement ratio (weight ratio of water and cement in cement milk) in this case is determined in the design of ground improvement work and the like.
[0003]
A conventional method for producing and supplying cement milk will be described with reference to FIG.
[0004]
In the figure, a cement milk kneading plant 1 mainly comprises a mixer 2 and an agitator 3. The mixer 2 mixes cement and water at a predetermined water cement ratio and kneads them uniformly. The agitator 3 is agitated so that the cement milk kneaded by the mixer 2 does not harden. The cement milk produced in the kneading plant 1 is pumped by the pumping pump 4 to the place of use (supply destination) via the pumping hose 5.
[0005]
For example, when the water cement ratio is set to “1: 1”, if 200 kg of cement per improvement target is required, 200 liters of water and 200 kg of cement are mixed per minute (min). A cement milk having a water / cement ratio of “1: 1” is produced. In this case, when ordinary Portland cement is used and the specific gravity of the cement is 3.16, the produced cement milk has a capacity of 263.3 liters / min.
[0006]
[Problems to be solved by the invention]
By the way, the cement milk production capacity of the kneading plant 1 is determined in advance, and a capacity beyond that cannot be obtained. For example, in the case of the kneading plant 1 having a production capacity of 263.3 liters / min of cement milk having a water-cement ratio “1: 1”, it is not possible to obtain a higher capacity. Therefore, when a higher capacity is required, it is necessary to reinforce the equipment of the kneading plant, and there is a problem that this involves a significant cost increase.
[0007]
In consideration of the above circumstances, the present invention generates a liquid solidified material that can produce a predetermined amount of cement milk (liquid solidified material) without increasing the equipment of the kneading plant, and sends it to the tip of the solidified pile construction machine. An object of the present invention is to provide a feeding device and a method for producing a liquid solidified material and feeding it to the tip of a solidified pile construction machine .
[0008]
[Means for Solving the Problems]
The apparatus for producing the liquid solidified material according to the first aspect of the invention and feeding it to the tip of the solidified pile construction machine kneads water and the solidified material, whereby the liquid solidified material having a predetermined mixing ratio required for solidified pile construction. In which the liquid solidified material is fed to the tip of the solidified pile construction machine, and the water and the solidified material are mixed and stirred in a state where the ratio of water to the solidified material is lower than the predetermined mixing ratio. A kneading plant that produces a concentrated liquid solidified material, a pump that pumps the concentrated liquid solidified material produced in the kneading plant toward the tip of the solidified pile construction machine, and the pressure pump and the solidified pile construction machine By adding water in the mixing tube to the concentrated liquid solidified material that is pumped through the pressure hose; a pressure feeding hose that connects the tip of the pressure feeding hose; The liquid solidification material at a predetermined mixing ratio A hydrolysis unit for diluting, in that a and piezoelectric feed stirring means for the downstream liquid solidifying material diluted to the predetermined mixing ratio within the pumping hose of course connected to the pressurized water means hose stirred while pumping Features.
[0009]
The method of producing the liquid solidified material of the invention of claim 2 and feeding it to the tip of the solidified pile construction machine uses an apparatus for producing the liquid solidified material of claim 1 and feeding it to the tip of the solidified pile construction machine. Then , by mixing water and solidification material, a liquid solidification material having a predetermined mixing ratio required for solidification pile formation is generated, and the liquid solidification material is fed to the tip of the solidification pile construction machine. In the mixing tube connected in the middle of the pumping hose, the concentrated liquid solidified material is diluted by adding water while being pumped by a pumping pump, and then diluted by a stirring means connected in the middle of the pumping hose. The liquid solidified material is stirred.
[0010]
According to the first and second aspects of the invention, a concentrated liquid solidified material is prepared in a kneading plant, and diluted to a predetermined mixing ratio and increased in a pumping stage in which it is pumped toward the tip of the solidified pile construction machine. Thereby, the liquid solidification material of a predetermined | prescribed mixing ratio can be fed to the front-end | tip of a solidification pile construction machine, and a liquid solidification material can be fed to the front-end | tip of a solidification pile construction machine. Therefore, it can be finally obtained as a liquid solidified material having an increased predetermined mixing ratio at other supply destinations without increasing the kneading amount in the plant.
[0011]
In addition, since the concentrated liquid solidified material is diluted to a predetermined mixing ratio in the pumping line to increase the amount, the amount of the final liquid solidified material fed from the tip of the solidified pile construction machine can be increased, and kneading Without increasing the plant equipment, it is possible to produce a liquid solidification material in an amount more than that specified in the kneading plant at a low cost.
[0012]
Furthermore, since water is added to the concentrated liquid solidified material in the pressure feed line and then stirred, the degree of kneading of the liquid solidified material can be increased and fed from the tip of the solidified pile construction machine. The quality of the liquid solidifying material can be improved.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIG.
[0014]
Fig.1 (a) shows schematic structure of the cement milk manufacturing apparatus of embodiment. The kneading plant 1 includes a mixer 2 and an agitator 3 and has the same capacity as that of the conventional one. This kneading plant 1 produces concentrated cement milk having a higher concentration than the prescribed water cement ratio required at the supply destination.
[0015]
The agitator 3 is connected to the suction side of the pressure feed pump 4, and the pressure feed pump 4 is connected to the discharge side of a pressure feed hose (pressure feed line or pressure feed line) 5 for feeding cement milk to the place of use (supply destination). Yes. The pressure pump 4 discharges the concentrated cement milk generated in the kneading plant 1.
[0016]
A mixing tube 6 is interposed in the middle of the pressure feeding hose 5. The mixing tube 6 is for mixing the water supplied from the hydration device (hydration means) 10 with the concentrated cement milk being pumped, and the tip 7a of the hydration tube 7 of the hydration device 10 is mixed in the mixing tube 6. Is arranged toward the downstream side in the pumping direction. The hydration apparatus 10 includes a hydration pump 8 that feeds a predetermined amount of water into the hydration tube 7.
[0017]
Flow meters 21 and 22 are provided on the pressure feeding hose 5 and the hydration tube 7 before the mixing tube 6. The detection values of these flow meters 21 and 22 are input to a control device (not shown) that controls the pressure pump 4 and the hydration pump 8, and the control device uses the pressure pump 4 and the hydration pump based on the detection values. 8 is controlled, and the mixing ratio of concentrated cement milk and water in the mixing tube 6 is controlled.
[0018]
In the middle of the pressure-feeding hose 5 on the downstream side of the mixing pipe 6, a line mixer (stirring means) 12 having a number of stirring blades 12 a on the inner wall of the pipe line is arranged, and the cement milk mixed in the mixing pipe 6 is mixed. Stir more uniformly.
[0019]
The line mixer 12 is provided for the purpose of accelerating the kneading of the cement milk by using the pumping force, and in addition to the one having fixed wings inside as shown in FIG. A meandering tube (stirring means) 14 as shown in FIG.
[0020]
Next, a method for producing cement milk having a prescribed water cement ratio (predetermined mixing ratio) will be described. Here, a case where the water cement ratio required at the supply destination (the tip of the solidified pile construction machine) is “1: 1” is taken as an example.
[0021]
First, in the kneading plant 1, water and cement are kneaded in a state in which the ratio of water to cement (solidifying material) is set lower than the mixing ratio “1: 1”, and the cement is more concentrated than the prescribed water cement ratio. Milk (liquid solidification material) is produced. Here, for example, in the kneading plant 1, concentrated cement milk having a water cement ratio of “0.5: 1” is generated.
[0022]
Next, in the mixing pipe 6 provided in the middle of the pressure feeding hose 5, the water of the ratio “0.5” remaining with respect to the concentrated cement milk is added, whereby the cement milk is supplied with a prescribed water cement ratio “1: 1”. Dilute and increase so that Then, the line milk 12 is further kneaded by pumping cement milk adjusted to a predetermined water-cement ratio in the mixing pipe 6 to the downstream side. Thereby, the cement milk having a high specified mixing ratio can be supplied to the place of use without using new stirring energy.
[0023]
In this way, concentrated cement milk is prepared in the kneading plant 1, and it is diluted and increased to a predetermined water cement ratio at the pumping stage, so without increasing the kneading amount in the kneading plant 1, The amount of cement milk having the final specified mixing ratio to be fed to the supply destination can be increased beyond the capacity specified by the kneading plant 1. That is, the cement milk to be used is determined to have a water-cement ratio of “1: 1”, but at the stage of kneading in the kneading plant 1, the proportion of water can be reduced to reduce the total amount of kneading. .
[0024]
For example, when water cement ratio is “1: 1” and normal Portland cement is added, if the required cement amount at the place of use is 200 kg, the mixing amount is “200 kg water with specific gravity 1” and “specific gravity 3.16”. 263.3 liters of cement milk is obtained with 200 kg of cement powder. In the above embodiment, since the water cement ratio is set to “0.5: 1” in the kneading stage of the kneading plant 1, “100 kg of water having a specific gravity of 1” and “200 kg of cement powder having a specific gravity of 3.16” are 163. It becomes 3 liters of cement milk.
[0025]
In other words, if the same amount of cement is required, the water-cement ratio at the processing stage of the kneading plant 1 is set to “0.5: 1”, so that 263.3 / 163.3 = 1.6 times as much cement milk. As a result, it can be kneaded in the same plant.
[0026]
For example, when the production capacity at the kneading plant 1 is 263 liters / min, the kneading plant 1 has a water-cement ratio of “0.5: 1” with water 161 liters / min and cement powder 322 kg / min. Generate 263 liters / min.
[0027]
Then, 161 liter / min of water is newly added in the mixing pipe 6 disposed in the middle of the pressure feeding hose 5 to adjust to a prescribed water cement ratio “1: 1”. At this time, since the total capacity of the cement milk is 263 + 161 = 424 liters / min, the cement milk increased as a result by the capacity of the kneading plant 1 can be sent to the place of use. That is, 424 liters / 263.3 liters = 1.6 times as much cement milk can be easily produced at low cost without increasing the equipment of the kneading plant 1.
[0028]
In addition, the water cement ratio of the concentrated cement milk produced | generated in the kneading plant 1 is not limited to said example, It can set arbitrarily.
[0029]
Further, in the above-described embodiment, the case where cement is used as the solidifying material is shown, but other than cement may be used.
[0030]
Moreover, in the said embodiment, the thing of materials other than a steel pipe may be sufficient as the pumping hose 5, the mixing pipe 6, and the water addition pipe 7. FIG.
[0031]
【The invention's effect】
As described above , according to the configuration of claims 1 and 2, a concentrated liquid solidified material is prepared in a kneading plant, and diluted to a predetermined mixing ratio in a pumping stage in which the liquid is solidified toward the tip of the solidified pile construction machine. Since the liquid solidification material with a predetermined mixing ratio can be fed to the tip of the solidification pile construction machine, the liquid solidification material can be fed to the tip of the solidification pile construction machine. Therefore, despite the fact that the amount of kneading in the plant is not increased, it is possible to obtain a liquid solidified material whose final mixing ratio is increased at other suppliers.
[0032]
In addition, since the concentrated liquid solidified material is diluted to a predetermined mixing ratio in the pumping line to increase the amount, the amount of the final liquid solidified material fed from the tip of the solidified pile construction machine can be increased, and kneading The effect is that it is possible to produce more liquid solidification material than the amount specified in the kneading plant at low cost without increasing the plant facilities.
[0033]
Furthermore, since water is added to the concentrated liquid solidified material in the pressure feed line and then stirred, the degree of kneading of the liquid solidified material can be increased and fed from the tip of the solidified pile construction machine. The effect of improving the quality of the liquid solidification material is obtained.
[0034]
[Brief description of the drawings]
FIG. 1A is a schematic configuration diagram of a cement milk manufacturing apparatus according to an embodiment of the present invention, and FIG. 1B is a diagram showing another example of a portion B in FIG.
FIG. 2 is a schematic configuration diagram of a conventional cement milk production apparatus.
[Explanation of symbols]
1 Kneading plant 4 Pressure feed pump 5 Pressure feed hose (pressure feed line, pressure feed line)
10 Watering device (watering means)
12 Line mixer (stirring means)
14 Meandering pipe (stirring means)

Claims (2)

By kneading water and solidification material, a liquid solidification material having a predetermined mixing ratio required in solidification pile formation is generated, and the liquid solidification material is fed to the tip of the solidification pile construction machine, A kneading plant that produces a concentrated liquid solidified material by mixing and stirring water and the solidified material in a state where the ratio of water to the solidified material is lower than the predetermined mixing ratio;
A pump that pumps the concentrated liquid solidified material produced in the kneading plant toward the tip of the solidified pile construction machine;
A pressure hose connecting the pressure pump and the tip of the solidified pile construction machine;
A mixing tube connected in the middle of the pumping hose;
Hydrating means for diluting the liquid solidified material to a predetermined mixing ratio in the pressure hose by adding water in the mixing tube to the concentrated liquid solidified material pumped in the pressure hose;
Liquid solidifying material, characterized in that a a stirring means for stirring while pumping the diluted liquid solidifying material to the predetermined mixing ratio on the downstream side of the pumping hose of the piezoelectric feeding way connected to the pressurized water means hose That generates and feeds to the tip of the solidified pile construction machine. A liquid having a predetermined mixing ratio required in solidification pile formation by kneading water and the solidification material using the apparatus for producing the liquid solidification material according to claim 1 and feeding it to the tip of the solidification pile construction machine. A method of generating a solidified material and feeding the liquid solidified material to the tip of a solidified pile construction machine,
In a mixing tube connected in the middle of the pumping hose, after adding and diluting the concentrated liquid solidified material while pumping with a pumping pump, the liquid is diluted by a stirring means connected in the middle of the pumping hose. A method of producing a liquid solidified material characterized by stirring the solidified material and feeding it to the tip of the solidified pile construction machine.

Images