JP4545273B2 - Cylindrical hardener mixing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a columnar hardening material mixing method.
[0002]
[Prior art]
Conventionally, as shown in FIG. 4, a nozzle 102 is provided at the lower end of the injection tube 101 in the radial direction of the injection tube 101, and a hardening material such as cement milk is sprayed from the nozzle 102 at a high pressure while rotating the injection tube 101. The hardened material is mixed into the target ground to form the cylindrical hardened material mixed layer V.
[0003]
Also, as shown in FIGS. 5, 6, 7, and 8, a plurality of cylindrical hardener mixed layers are regularly arranged on the front, rear, left, and right in a plan view (V ₁₀₁ , V ₁₀₂ , V ₁₀₃ , V ₁₀₄ , V ₁₀₅ , V ₁₀₆ , V ₁₀₇ , V ₁₀₈ , V ₁₀₉ , V ₁₁₀ , V ₁₁₁ , V ₁₁₂ , V ₁₁₃ , V ₁₁₄ , V ₁₁₅ ) There is already a column-shaped hardening material mixing method. . FIG. 8 is a cross-sectional view showing a bottom panel constructed under the pond bottom, where reference numeral 103 indicates a water flow prevention wall, reference numeral 104 indicates a pond, and reference numeral 105 indicates a dike.
[0004]
[Problems to be solved by the invention]
A nozzle is provided at the lower end of the injection tube, and while rotating the injection tube, the hardener is sprayed at a high pressure from the nozzle, and the hardened material is mixed into the target ground to create a cylindrical hardener mixed layer, and multiple cylindrical hardening There is already a columnar hardening material mixing method for constructing the material mixing layer so that the material mixing layer is regularly arranged in front, rear, left and right in a plan view.
[0005]
In this columnar hardening material mixing method, first, as shown in FIG. FIG. 5 is a plan view.
[0006]
As shown in FIG. 5 (a), the flowing water prevention wall 103 of one cylindrical hardened material mixed layer is formed. Subsequently, as shown in FIG. 5B, the second flowing water prevention wall 103 is formed so as to partially contact the flowing water prevention wall 103. Thereafter, the water flow prevention wall 103 is formed in the same manner, and the continuous water flow prevention wall 103 shown in FIG. 5C is formed.
[0007]
This time, as shown in FIG. 6, a cylindrical hardener mixed layer V ₁₀₁ , a cylindrical hardener mixed layer V ₁₀₂ , a cylindrical hardener mixed layer V ₁₀₃ ,... Are formed in this order, as shown in FIG. Next, the bottom plate of the pond 104 is created.
[0008]
Then, as shown in FIG. 7, cylindrical hardener mixed layers V ₁₀₁ , V ₁₀₂ , V ₁₀₃ , V ₁₀₄ , V ₁₀₅ , V ₁₀₆ , V ₁₀₇ , V ₁₀₈ , V ₁₀₉ , V ₁₁₀ , V ₁₁₁ , V _{112 , V 113, V 114, V} 115 is longitudinal V ₁₀₁ in the _{direction, V 102, V 103, V} 104, V 105, V 106, V 107, V 108, V 109, V 110, V 111, V 112, V _113, overlaps the V _114, V _115, further, the left-right direction in _{V 111, V 117, V 101} , V 112, V 108, V 102, V 113, V 109, V 103, V 114, V 110, V It overlaps with _104, and there is a lot of loss and construction efficiency is poor (still, the construction efficiency is considered to be the best in the past). As shown in FIG. 7, it is a regular hexagonal accumulation format, and the effective creation rate is 82.7%.
[0009]
Further, as shown in FIG. 9, when the construct a underground walls for joining a cylindrical cured material mixed layer V _201, V _202, the effective reclamation rate becomes 64.2%.
[0010]
Therefore, development of a method for mixing cylindrical hardeners with high construction efficiency and low construction costs is awaited.
[0011]
[Means for Solving the Problems]
Therefore, in view of the above circumstances, the present invention is provided with a nozzle at the lower end of the injection pipe to reduce the loss, to improve the construction efficiency and to reduce the construction cost, and to remove the hardening material from the nozzle while rotating the injection pipe. A cylindrical shape that is sprayed at a high pressure to form a cylindrical hardened material mixed layer by mixing hardened material in the target ground, and to arrange multiple cylindrical hardened material mixed layers regularly in front, back, left, and right in plan view In the hardened material mixing method, the cylindrical hardened material mixed layer is overlapped only in one direction in plan view, and the other direction is constructed so that the cylindrical hardened material mixed layer is in contact , and in the adjacent gap of the cylindrical hardened material mixed layer The cylindrical hardened material mixture layer was constructed by first constructing the fan-shaped notched cylindrical hardener mixed layer to be formed, and then constructing the cylindrical hardened material mixed layer between the applied fan-shaped cylindrical hardened material mixed layers . .
[0013]
Furthermore, the present invention has a higher construction efficiency, and the smaller the work outer peripheral speed, the larger the reachable distance. Therefore, in order to reduce the construction cost, the work outer peripheral speed is 40 cm when constructing the cylindrical hardener mixed layer. It was set as the column-shaped hardening material mixing layer made into / sec or less.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described in detail below based on specific embodiments shown in the accompanying drawings.
[0015]
Fig. 1 shows an example of construction of a pond bottom. FIG. 1 is a plan view.
[0016]
First, a fan-shaped notched cylindrical hardener mixed layer is formed. One fan-shaped notched cylindrical hardener mixed layer V ₁ is formed. Subsequently, the second fan-shaped notch cylindrical hardener mixed layer V ₂ is formed so as to be partially in contact with the fan-shaped notch cylindrical hardener mixed layer V _1. to construct a V _3.
[0017]
As described above, the fan-shaped broken cylindrical hardened material mixed layers V ₁ , V ₂ , V ₃ are applied in the front-rear direction. Next, fan-shaped notched cylindrical hardener mixed layers V ₄ , V ₅ , V ₆ are applied in the front-rear direction at positions spaced leftward in the figure. Further, the front and rear fan-shaped cylindrical hardened material mixed layers V ₇ , V ₈ , and V ₉ are applied at positions separated to the left.
[0018]
Subsequently, the cylindrical hardened material mixed layers V ₁₀ , V ₁₁ , and V ₁₂ are applied between the first fan-shaped cylindrical hardened material mixed layers (in this case, the description of the right-side fan-shaped cylindrical hardened material mixed layer is omitted). ) Thereafter, the cylindrical hardener mixed layers V ₁₃ , V ₁₄ and V ₁₅ are applied. Subsequently, columnar hardening material mixed layers V ₁₆ , V ₁₇ and V ₁₈ are applied. Further, the cylindrical hardener mixed layers V ₁₉ , V ₂₀ and V ₂₁ are applied.
[0019]
As can be seen from FIG. 1, cylindrical hardened material mixed layers V ₁₀ , V ₁₁ , V ₁₂ , V ₁₃ , V ₁₄ , V ₁₅ , V ₁₆ , V ₁₇ , V ₁₈ , V ₁₉ , V ₂₀ , V of the same diameter. Work to arrange ₂₁ regularly. That is, it arrange | positions so that it may overlap with the front-back direction in planar view, and it arrange | positions so that a cylindrical hardening material mixing layer may contact | connect in the left-right direction.
[0020]
The center points 11, 12, 13, 14, ₁₅ , ₁₆ , ₁₇ , and _{17 of} the fan-shaped broken cylindrical hardener mixed layers V ₁ , V ₂ , V ₃ , V ₄ , V ₅ , V ₆ , V ₇ , V ₈ , V ₉ , 18 and 19, the cylindrical cured material mixed layer _{V 10, V 13, V 11} , V 14, V 12, V 15, V 13, V 16, V 14, V 17, V 15, V 18, V 16 , V ₁₉ , V ₁₇ , V ₂₀ , V ₁₈ , V ₂₁ .
[0021]
The fan-shaped notched cylindrical hardener mixed layer V ₁ , V ₂ , V ₃ , V ₄ , V ₅ , V ₆ , V ₇ , V ₈ , V ₉ is cured from the nozzle 22 by rotating the injection tube 21 shown in FIG. Inject the material at high pressure. The rotation angle θ of the injection tube 21 is 60 °, and the nozzle 22 is provided at a position facing the injection tube 21 and can be applied simultaneously on both sides (front and rear sides). Alternatively, the nozzle 21 can be provided only on one side of the injection tube 21 and the other side can be constructed after completion of the one side. The effective production rate of the present invention is 89.1%, which is 6.4% better than the conventional 82.7%.
[0022]
Further, as shown in FIG. 3, fan-shaped notched cylindrical hardener mixed layers V ₃₁ , V ₃₂ and V ₃₃ are formed, and then cylindrical hardener mixed layers V ₃₄ , V ₃₅ , V ₃₆ and V ₃₇ are formed. . In the case of underground wall creation, the effective creation rate is 82.6%, which is 18.4% better than the conventional 64.2%.
[0023]
The construction of the fan-shaped notched cylindrical hardener mixed layer prior to the construction of the cylindrical hardener mixed layer is performed for the following reason.
[0024]
Assuming that the cylindrical hardener mixed layers have the same diameter (for example, 300 cm), set the injection pressure (400 kgf / cm ² ) and the outer peripheral speed (40 cm / sec or less) of the hardener to be the same. Yes.
[0025]
However, since the soil quality of the target ground is not uniform, it may be larger than the assumed diameter (for example, 300 cm). Since it is not possible to confirm the diameter of the applied cylindrical hardened material mixed layer, when it is applied to a diameter larger than the assumed diameter, the hardened material is already mixed in the hardened cylindrical hardened material mixed layer applied later and hardened. There will be places where materials cannot be mixed into the ground. Therefore, the fan-shaped notched cylindrical hardened material mixed layer is preliminarily applied on both sides of the planned location of the cylindrical hardened material mixed layer construction so that the diameter of the cylindrical hardened material mixed layer does not become larger than the assumed diameter.
[0026]
The construction efficiency is determined by the balance between the construction area (the diameter of the cylindrical hardener mixed layer) and the construction outer circumference (outermost circumference) speed.
[0027]
The diameter of the conventional cylindrical hardener mixed layer was usually about 180 cm to 200 cm, and the construction outer peripheral speed was 50 cm / sec or more.
[0028]
In the present invention, the construction outer peripheral speed is reduced to a slow speed of 40 cm / sec or less (standard 20 cm / sec), the diameter can be increased to 400 cm, which is larger than the conventional one, and the construction efficiency is increased.
[0029]
【The invention's effect】
In the present invention, as described above, the nozzle is provided at the lower end of the injection tube, and while rotating the injection tube, the hardening material is injected at a high pressure from the nozzle, the hardening material is mixed into the target ground, and the cylindrical hardening material mixed layer is formed. In the cylindrical hardener mixing method that is constructed and constructed so as to arrange a plurality of cylindrical hardener mixed layers regularly in front and rear, left and right in plan view, the cylindrical hardener mix layer is overlapped only in one direction in plan view, The other direction is a cylindrical hardener mixing method that is installed so that the cylindrical hardener mixed layer is in contact, so there is little construction loss and construction efficiency is good, and the construction cost is lower than the conventional cylindrical hardener mixed method It will be quite inexpensive.
[0030]
In addition, the present invention first applies the fan-shaped notched cylindrical hardened material mixed layer formed in the adjacent gap of the cylindrical hardened material mixed layer, and then forms a columnar shape between the fan-shaped notched cylindrical hardened material mixed layers. Since it is a columnar hardening material mixing method in which the hardened material mixed layer is constructed, the working efficiency is good and the construction cost is low.
[0031]
Furthermore, since the present invention is a columnar hardening material mixing method in which the outer peripheral speed of the setting is 40 cm / sec or less during the columnar hardening material mixed layer construction, the construction efficiency is good and the construction cost is low.
[Brief description of the drawings]
FIG. 1 is a plan view showing the entire bottom plate of the bottom of a pond of the present invention.
FIG. 2 is a front view showing an injection tube of the present invention.
FIG. 3 is a schematic view of the underground wall of the present invention.
FIG. 4 is a perspective view showing the construction of a conventional cylindrical hardener mixed layer.
FIG. 5 is a plan view for explaining a conventional order of forming a water flow prevention wall.
FIG. 6 is a plan view for explaining the order of forming a conventional cylindrical hardening material mixed layer.
FIG. 7 is a cross-sectional view showing the entire bottom plate of the bottom of a conventional pond.
8 is a cross-sectional view taken along the line VII-VII of FIG.
FIG. 9 is a schematic view of a conventional underground wall.
[Explanation of symbols]
11 · 12 · 13 · 14 · 15 · 16 · 17 · 18 · 19 ··· center points V ₁ , V ₂ , V ₃ , V ₄ V ₅ , V ₆ , V ₇ , V ₈ , V ₉ , V ₃₁ , V ₃₂ , V ₃₃ ... Fan-shaped broken cylindrical hardened material mixed layer V ₁₀ , V ₁₁ , V ₁₂ , V ₁₃ , V ₁₄ , V ₁₅ , V ₁₆ , V ₁₇ , V ₁₈ , V ₁₉ ,
_{V 20, V 21, V 34} , V 35, V 36, V 37 ... columnar cured material mixed layer

Claims (2)

A nozzle is provided at the lower end of the injection tube, and while rotating the injection tube, the hardened material is sprayed from the nozzle at a high pressure, and the hardened material is mixed into the target ground to form a cylindrical hardened material mixed layer. In the cylindrical hardener mixing method, which is constructed so that the mixed layer is regularly arranged in front, rear, left, and right in a plan view, the cylindrical hardener mixed layer is overlapped only in one direction in a plan view, and the other direction is a cylindrical hardener mixed layer Between the fan-shaped notched cylindrical hardener mixed layers, which were first constructed and then the fan-shaped notched cylindrical hardener mixed layers formed in the adjacent gaps of the cylindrical hardener mixed layers. A columnar hardening material mixing method characterized by constructing a columnar hardening material mixed layer . When columnar cured material mixed layer construction, cylindrical cured material mixed method of claim 1 Symbol mounting, characterized in that the construction periphery speed is less 40 cm / sec.

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