JP2506024B2 - Embankment construction and backfilling method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embankment construction method and a backfilling method for site construction work such as airports, roads, industrial estates, housing estates, and construction of dam bodies.

[0002]

2. Description of the Related Art Conventionally, in site construction work using soft rock masses, the soft rock masses are unwound and compacted. In that case, since the soft rock mass cannot be rolled and compacted if it is a large mass, the soft rock mass is divided into small pieces and crushed before being rolled and compacted.

[0003]

However, it is very troublesome to smash and crush the soft rock mass before this rolling-out compaction work, and the soft rock mass that has been shredded and crushed is finely divided with the portion of the mass under construction. It is often divided into grain parts and made up of heterogeneous materials.

Also, after a long time has passed after construction, slaking or grain refining of the soft rock mass may occur, resulting in a large void in the ground, which may cause a ground depression.

An object of the present invention is to solve the above-mentioned problems of the prior art, to provide a method of embankment construction and backfilling which is simple in construction and excellent in long-term stability.

[0006]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention arranges a lumpy coarse-grained material, which is not minced, into the unwound or backfilled portion, and then a soil mortar Filling the voids of the coarse-grained material with this soil mortar by spraying, and repeating the step of spreading or arranging the lumpy coarse-grained material and the step of spreading the soil mortar, the lumpy coarse-grained material. Is a lump of soft rock, and soil mortar is characterized in that it is manufactured by using fine grains of soft rock.

[0007]

According to the present invention described in claims 1 to 3,
Since it is not necessary to pulverize the lumpy coarse-grained material into fine pieces and the rolling-out rolling operation is not necessary, the number of steps can be reduced and the construction can be rationalized. Further, since the voids are filled with soil mortar, there is little variation, and the long-term stability is excellent, and there is no occurrence of ground voids, depressions, or the like.

According to the present invention as set forth in claim 4, the soil mortar can be produced on the basis of the host rock soft rock, and can be mixed and prepared to obtain the same physical properties as the host rock soft rock.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 2 is a flow chart showing an embodiment of the embankment creation and backfilling method of the present invention, and FIG. 1 shows an example of the embankment creation method and the dam dam construction.

As an agglomerate coarse-grained material, an agglomerate soft rock agglomerate 1 of unearthed soil is prepared as a material, which is loaded and unwound. Then, soil mortar 2 is sprinkled on it to fill the voids of the soft rock mass 1 with this soil mortar 2 and cure.

Further, the lump-shaped soft rock mass 1 is sprinkled thereon, and soil mortar 2 is sprinkled to fill the voids of the soft rock mass 1.

The step of spreading the soft rock mass 1 and the step of spraying the soil mortar 2 are appropriately repeated to build a bank or a bank.

By the way, the soil mortar 2 is produced by using the fine particles (cohesive soil) of the soft rock 1, and Table 1 below shows formulation examples and physical properties of the soil mortar.

[0014]

[Table 1]

FIG. 9 shows an example of a plant for manufacturing this soil mortar 2, which comprises a mixer 3 and a solidifying material silo 4 for feeding a solidifying material to the mixer 3. Mixer 3
The cohesive soil and water are metered in, and the solidified material from the solidified material silo 4 is mixed and mixed to be transported and sprayed.

FIG. 3 shows a fill dam constructed according to the present invention. A layer of soil mortar 2 was provided in the central portion, and a foundation 5 was formed in the ground. In the figure, 6 is facing.

FIGS. 4 to 6 show an airport, a road,
It is each process drawing at the time of performing embankment construction, such as an industrial (house) housing complex. As in the case of FIG. 1, as a lumpy coarse-grained material, a lumpy soft rock lump 1 that has not been cut into small pieces is sprinkled, and then a soil mortar 2 is sprinkled on the soil mortar 2 to soften the soft rock lump 1 with the soil mortar 2. The void is filled, and the block-shaped soft rock mass 1 is sprinkled on the void, and the soil mortar 2 is sprinkled, and the step of spreading the soft rock mass 1 and the sprinkling step of the soil mortar 2 are appropriately repeated to perform embankment.

FIGS. 7 and 8 show an embodiment of the backfilling method of the present invention. FIG. 7 shows the case where the surrounding of the important building structure 7 is backfilled, and FIG. 8 shows the surrounding of the underground structure 8 backfilled. This is the case.

Even when such backfilling is carried out, as a lumpy coarse-grained material, a lumpy soft rock lump 1 which has not been subdivided and has been digged is arranged in the backfilled portion, and a soil mortar 2 is sprinkled thereon. Then, the soil mortar 2 is used to fill the voids of the soft rock mass 1, and the soft rock mass 1 is further formed on the void.
The step of spreading the soft rock mass 1 and the step of spraying the soil mortar 2 in which the soil mortar 2 is sprinkled to fill the voids of the soft rock mass 1 are appropriately repeated.

In the figure, 9 is a road, 10 is an underground buried object such as a water pipe or conduit, and 11 is a building.

As another example, as the block-shaped coarse-grained material, construction waste such as concrete rock is used in addition to the soft rock block 1, or the coarse-grained material other than the soft rock block 1 is mixed with the soft rock block 1. It is also possible to use it as such, and in that case also, the procedure for spraying the soil mortar 2 and filling the void of the soft rock mass 1 is the same.

[0022]

As described above, the embankment formation and backfilling method of the present invention does not require the crushing of the lumpy coarse-grained material into fine pieces, and the rolling operation after spreading is not necessary. The number can be reduced and the construction can be rationalized. Furthermore, since the voids are filled with soil mortar, there is little variation, which is excellent in long-term stability, and there is no occurrence of ground voids, depressions, or the like.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a first embodiment of the embankment creation method of the embankment creation and backfilling methods of the present invention.

FIG. 2 is a flow chart showing an embodiment of the embankment creation and backfilling method of the present invention.

FIG. 3 is a side view of a fill dam constructed according to the present invention.

FIG. 4 is a first diagram showing a second embodiment of the embankment construction method of the present invention.
It is a side view of a process.

FIG. 5 is a second diagram showing a second embodiment of the embankment construction method of the present invention.
It is a side view of a process.

FIG. 6 is a third embodiment showing the second embodiment of the embankment construction method of the present invention.
It is a side view of a process.

FIG. 7 is a side view showing an example of a backfilling method of the present invention.

FIG. 8 is a side view showing another example of the backfilling method of the present invention.

FIG. 9 is a side view showing an example of a soil mortar manufacturing plant.

[Explanation of symbols]

1 ... Soft rock mass 2 ... Soil mortar 3 ... Mixer 4 ... Solidifying material silo 5 ... Foundation 6 ... Facing 7 ... Building important structure 8 ... Underground structure 9 ... Road 10 ... Underground buried object 11 ... Building

Claims (4)

(57) [Claims] 1. A lump-shaped coarse-grained material which has not been cut into small pieces and is sprinkled out, and soil mortar is sprinkled on the soiled mortar to fill voids of the coarse-grained material with the soil mortar. Embankment construction method. 2. A lumpy coarse-grained material that has not been cut into small pieces is provided in a backfilling portion, and soil mortar is sprinkled on the backfilled portion to fill voids of the coarse-grained material with the soil mortar. Backfilling method characterized by that. 3. The embankment construction and backfilling method according to claim 1 or 2, wherein the step of spreading or arranging the lumpy coarse-grained material and the step of spraying soil mortar are appropriately repeated. 4. The embankment creation and backfilling method according to claim 1, wherein the lump-shaped coarse-grained material is a soft rock lump, and the soil mortar is produced using fine-grained particles of soft rock.