JPS5856764B2 - Asphalt impermeable wall construction method and equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the construction of a fill dam in which a water-blocking wall (asphalt core) using asphalt concrete is provided in an embankment made of earth, sand, gravel, rocks, etc. In a technique for interiorly building an internal impermeable layer in a thin layered manner by simultaneously raising the impermeable construction material for the internal impermeable layer and the adjacent air-side and water-side dam heaps and making them almost at the same level. In view of the lack of construction quality, economic efficiency, and work efficiency, the purpose of this project is to provide a construction method that can construct high-quality asphalt ice walls with high efficiency and at low cost, as well as equipment that can be used directly for construction. shall be.

For convenience of explanation, first, the configuration and effects of the device according to the present invention will be explained based on FIG. 1 and FIG. 2.

FIG. 1 is a front view of this embodiment, and FIG. 2 is an open plan view, in which a set of constituent devices according to the present invention is mounted on a tracked vehicle 1.

Since this vehicle 1 normally performs work while traveling in the direction of arrow A, in the following explanation, the direction of arrow A will be referred to as forward, and the opposite direction will be referred to as backward.

If the devices constituting the apparatus of this example are roughly classified in terms of their functions, they mainly consist of a transition material leveling device 2, an asphalt material leveling device 3, and a rolling device 4.

The configuration of each of these devices, including its auxiliary devices, will be described in detail below.

The transition material leveling device 2 includes a transition material hopper 2a at the front of the vehicle 1, and one conveyor 2b, 2b' on the left and right for sequentially conveying the transition material placed therein to the rear. A transition material leveling plate 2c is provided near the rear end of this conveyor.
, 2'c are provided on each side.

In addition, in FIG. 2, both left and right sides B of the traveling path of vehicle 1,
It is assumed that area B' is a planned area for constructing a transition material, and area C in between is a planned area for constructing an impermeable wall using asphalt material.

The aforementioned conveyors 2 b and 2 b' on each side and leveling plates 2 c and 2 c' are arranged so as to spread and level the transition material onto areas B and B' of the travel path.

The asphalt leveling device 3 is an asphalt material hopper 3
a, and a device 3b for distributing and leveling the asphalt material in this hopper onto area C of the running road surface;
It is equipped with a heater 3c that heats the area road surface.

Although the heater is provided at the front of the vehicle 1 in this embodiment, it may also be provided below the vehicle 1.

As the heater, an appropriate heater such as an electric heater may be used for LPG infrared heat.

In order to prevent the transition material leveled by the transition leveling device 2 from mixing with the asphalt material leveled by the asphalt material leveling device 3, a partition device 5 (not shown) is provided as an accessory to both devices. It is being

Figure 3 shows the xx' cross section of Figures 1 and 2 above,
FIG. 4 shows the same YY' cross section.

In this figure, 6 is a layer of transition material, 7 is a layer of asphalt material, part D shows the existing part, and part E shows the part under construction.

The left shaping plate 5a and the right shaping plate 5a' of the partition wall device 5 are fixed to the lower end of the hopper 3a as shown in FIG. 4, and their front ends project forward beyond the hopper as shown in FIG. The left and right sections form the shape of a ship's shaft.

The center and rear parts of the left and right shaping plates 5a and 5a' are parallel to each other and face perpendicular to the ground, as shown in Figures 3 and 4, so that no transition occurs in layer E during construction. Area B where the wood is laid evenly.

It separates B' from area C where asphalt material is to be spread.

In areas other than directly below the hopper 3a, a roof material 5b is interposed and fixed above the left and right shaping plates 5a, 5a' to cover the area where asphalt is to be leveled, that is, area C.

In addition, in this FIG. 3, 2 c and 2 c' are the transition material leveling boards mentioned above, and 2 d and 2
Reference numeral d' denotes a hydraulic cylinder for vertically operating the leveling board, and is suspended from appropriate locations 8, 8' of the vehicle 1.

The rolling device 4 includes an asphalt material rolling machine 4a installed above the running road surface area C, and a rolling road surface B, B.
Equipped with transition material rolling machines 4b, 4b' provided at the upper part of the area and transition material preliminary rolling machines 4c, 4c' provided in front of the transition material rolling machines 4b, 4b'. Each of these rolling presses is attached to the vehicle 1 so that it can be moved up and down and adjusted up and down.

In this embodiment, the preliminary rolling machines 4 c and 4 c' are attached to both sides of the partition wall device 5 via vertically movable brackets, and the asphalt material rolling machines 4 a and the transition material rolling machines 4 b and 4 are connected to each other. b' are each individually attached to and suspended from a hanging frame 4d, and each individually attached to an indexing frame 4e, and the above-mentioned hanging frame 4d and indexing frame 4e are each attached to a hanging arm 4f. There is.

This hanging arm 4f is pivotally supported on the vehicle 1 by a pin 4g, and can be freely tilted up and down by a hydraulic cylinder 4h, and by this operation, the asphalt material rolling machine 4a and the transition material rolling machine 4b,
4b' is a structure that can be operated up and down, and the elevation angle of the bottom surface of the rolling press can also be changed accordingly.

It should be noted that if a well-known horizontal detection automatic adjustment device is applied to a device for suspending and vertically moving these rolling presses, it is also possible to automatically adjust the horizontal inclination of the rolling press.

The apparatus according to the present invention has the above-described configuration, and in order to construct a fill dam with an asphalt concrete impermeable wall inside, a transition material such as crushed stone is charged and stored in the transition material hopper 2a, Asphalt wall material made of asphalt mixture, that is, asphalt material, is charged and stored in the asphalt material hopper 3a, and the vehicle travels in the direction of arrow A along the planned fill dam construction line and immediately above the planned area C for constructing the asphalt water-shielding wall.

While traveling, the transition material in the hopper 2a is continuously conveyed rearward by the conveyors 2b, 2b' and discharged near the front portions of the leveling plates 2c, 2c'.

As shown in Fig. 3, the discharged transition material is guided by the shaping plates 5a and 5a' and spread over the top of area B, and together with the action of the roofing material 5b, the asphalt water-shielding wall is constructed. It will not mix into the upper part of Area C, which is the planned area.

Furthermore, as mentioned above, since the transition material is spread out behind the vehicle 1, the ground-contacting part of the vehicle 1 (the crawler 1a in this embodiment) does not step on the spread out transition material, but instead steps on the existing part of the fill dam body. The vehicle runs on top of the vehicle.

The upper surfaces of the spread transition materials 6 are leveled appropriately higher than the planned asphalt leveling level F by the leveling plates 2 c and 2 c'.

While the leveling work is in progress, as the vehicle 1 moves, the heater 3c heats and melts the top surface of the existing asphalt impermeable wall, so that it is well fused with the asphalt material laid on top of it. Preparation work will be performed automatically for you to arrive.

At the point on the X-X′ moe plane shown in FIG.
-Y' cross section, the roof 5b
The asphalt material 7 is spread out from the hopper 3a and is leveled so that its upper surface is at level F, that is, slightly lower than the leveling surface G of the transition material 6.

As the vehicle 1 moves further, the preliminary rolling machines 4c, 4c
' pre-rolls the transition material on the G plane.

As a result of this preliminary rolling, the upper surface G of the transition material sinks slightly to become approximately equal to the vertical direction of the asphalt material.

In this way, until the top surface level of the transition material becomes almost equal to the top surface level of the asphalt material, the two are separated by the shaping plates 5 a and 5 a', so there is no risk of mixing, and the asphalt water-blocking wall is not planned. Constructed over area C to the correct geometry.

As a result, the water-shielding performance of the asphalt water-shielding wall is good, and there is no need to waste asphalt mixture.

Then, when the level of the leveled surface F of the asphalt material and the pre-rolled surface of the transition material are approximately at the same height, the rolling device 4 passes over the asphalt material and the transition material while rolling it. Therefore, the mesh between the two is strong, and compaction is performed with high efficiency.

The asphalt impermeable wall construction method according to the present invention is carried out through the steps described above, and provides the following excellent effects.

- Since the upper surfaces of the left and right transition materials of the existing top layer are used as the roadbed for the paving machine, the next layer can be paved using the upper surfaces of the existing transition materials as a reference white.

Therefore, there are few irregularities on the leveling surface and rolling surface of the transition material and asphalt wall material, and high-precision, high-quality construction can be easily performed.

■ Since the upper surfaces of the left and right transition materials of the existing top layer are used as the running roadbed for the paving machine, there is no need to adjust the height of the entire paving machine or the height of each part of the paving machine each time a thin layer is constructed.

Therefore, it is possible to improve work efficiency and quality.

(2) Also, before rolling the transition material and the asphalt wall material, the transition material is pre-compacted so as to be equal to the asphalt paving level, so mixing of the transition material and the asphalt wall material can be prevented.

Therefore, there is no risk of reducing the effective thickness of the asphalt impermeable wall and impairing its impervious performance by constructing the asphalt impermeable wall with the transition material mixed in, and it is easy to construct the asphalt impermeable wall with accurate shape and dimensions. It can be constructed quickly and with high efficiency, and there is no wastage of asphalt mixture.

■ Since the transition material is pre-compacted to the same level as the asphalt pavement, and then the transition material and asphalt wall material are compacted, the interlocking of the art materials is strengthened in the direction of the boundary between the transition material and the asphalt wall material.

■ Since these processes are performed continuously, temporary storage of materials and allocation of auxiliary equipment can be reduced, resulting in a significant cost reduction effect.

Furthermore, when the construction method according to the present invention is used, it goes without saying that the above-mentioned effects of the construction method according to the present invention can be fully exhibited, and the construction device according to the present invention Furthermore, it brings about the following excellent effects.

■ Since the bulkhead device is located at the ground contact area of the self-propelled vehicle, for example, behind the crawler, it is easy to control the direction of the self-propelled vehicle against the external force exerted by the transition material on the bulkhead device, and the asphalt barrier Ice walls can be constructed accurately along the planned line.

■ Due to the effect of (■) above, since the top surface of the existing transition material with less irregularities is used as the running roadbed for self-propelled vehicles, it is possible to maintain the state in which the running partition wall device of the self-propelled vehicle is always in contact with the running roadbed. In addition, in the construction device of the present invention, the position where the transition material is placed on the existing transition material from the conveyor is close to the position where the asphalt wall material is removed from the hopper, so that the transition material is not mixed with the asphalt wall material. Therefore, the various effects mentioned in item (2) above are further promoted.

■ Since the bulkhead device does not protrude from the front of the self-propelled vehicle, the total length of the self-propelled vehicle can be shortened, which not only makes it easier to route and manage the paving machine, but also makes it possible to The amount of manual construction work required at the cut-off section can be reduced.

- Since the heating device heats and melts the upper surface of the existing asphalt water-shielding wall, it can be well fused with the asphalt wall material laid on top of it.

[Phase] In manufacturing the construction device according to the present invention,
A conventional asphalt finisher consisting of a hopper, a feeder, a spreader, a screed, a traveling device, etc. can be modified to reduce manufacturing costs.

0 The construction device according to the present invention is a self-propelled vehicle that can be used for temporary storage, spreading, leveling, preliminary compaction, and compaction of transition materials, as well as temporary storage, spreading, leveling, and compaction of asphalt materials. Since the entire process can be carried out consistently, it has the great advantage of significantly reducing machine equipment costs, machine management costs, and operator labor costs.

[Brief explanation of the drawing]

FIG. 1 is a front view of the apparatus according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a cross-sectional view taken along line XX', and FIG. 4 is a cross-sectional view taken along line Y-Y'. 1... Vehicle, 2... Transition material leveling device, 2a... Transition material hopper, 2b. 2b'... Conveyor, 2c, 2c'...
・Leveling plate, 2d, 2a'...Hydraulic cylinder, 3...Asphalt material leveling device, 3a...Asphalt material hopper, 3b...
...Device for spreading and leveling asphalt material, 3c.
...Heater, 4...Rolling device, 4a...
... Asphalt material rolling machine, 4 b, 4 b'
・・・・・・Transition material rolling machine, 4c, 4
c'...Transition material preliminary rolling machine, 5.
...Partition device, 5 a, 5 a'...
- Shaped board, 5b... Roofing material.

Claims (1)

[Scope of Claims] 1. In the construction of a fill dam in which a thin layer consisting of left and right transition materials and asphalt wall material in the middle between both transition materials is paved in multiple layers, a paving machine is used to pave the top surface of the left and right transition materials of the existing top layer. The paving machine is used to spread the transition material on both the left and right sides of the road, spread it evenly, and pre-compact it so that it is equal to the asphalt paving level. In the intermediate part, asphalt wall material is laid evenly by the paving machine, and after preliminary rolling of the transition material and leveling of the asphalt wall material, the steps of rolling the transition material and the asphalt wall material are successively carried out. A method for constructing asphalt ice walls that is characterized by a rapid progress. 2. During the construction of a fill dam, in which a thin layer of left and right transition materials and asphalt wall material between the two transition materials is laid in multiple layers, a self-propelled vehicle running on the left and right transition materials of the existing top layer was , a hopper for transition material at the front of the self-propelled vehicle, and a transition material supplied from the hopper onto the left and right transition materials of the existing top layer at a position behind the ground contact part of the self-propelled vehicle. a conveyor for conveying the transition material to the conveyor, a leveling device for the transition material conveyed by the conveyor, a pre-rolling device that can move up and down for the leveled transition material, and heating the top surface of the existing asphalt wall material. equipment, a hopper for asphalt wall materials, a leveling device for asphalt wall materials supplied from the hopper, and a preliminary rotation of transition material from a position in front of each leveling device for transition material and asphalt wall material. A partition device for preventing mixing of transition material and asphalt wall material to a position behind the pressure device and asphalt wall material leveling device, and a device for compacting the transition material and asphalt wall material behind the partition device. An asphalt ice barrier construction device characterized by being equipped with.