JPH0953260A - Buried type pump room and constructing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce suspension weight, and to ensure a working space at the time of equipment installation works by forming this pump room of a lower pump room with a base section beforehand manufactured of concrete and a partial side face section and an upper pump room consisting of only a side face section while proper positioning structure is attached at the upper-lower abutting places of the side face section. SOLUTION: The periphery of a ground surface section at the upper end of a well (a) is excavated for ensuring a space (b) for forming a pump room. The ground surface section is compacted by a foundation material C, and a lower pump room 1 is installed. A pump equipment (d) is mounted on the lower pump room 1. An upper pump room is laminated and continued on the lower pump room 1A and the peripheral wall of the whole pump room is formed. A residual section is buried through a water-passing pipe (e) in an inserting hole so as to correspond to the kind of the pump equipment (d), and the inserting hole is changed into a wall surface. The residual space (b) is backfilled, and the pump rooms are covered with a cover body. Accordingly, the operating efficiency of the installation works of the equipment can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a buried pump chamber for installing a pump for pumping snow-melting water on a road surface and a method for constructing the same.

[0002]

2. Description of the Related Art Snow-melting roads are constructed by burying water pipes on the road surface, branching from the water pipes and discharging groundwater from sprinkling nozzles exposed on the road surface to melt the snow on the road surface.
When installing this snow-melting road, it is naturally necessary to install a pump for pumping groundwater into the water pipe and supplying groundwater to the water pipe.

Regarding the installation of this pump, conventionally, the pump is installed according to a certain standard for safety reasons. That is, a well (with a diameter of 200 mm and a hole at the tip of the underground is a perforated pipe) A is drilled, the periphery of the well is drilled, and it is made of precast concrete that has been produced in a predetermined box-shaped size. The pump room B is arranged in the excavation hole C, and then the pump device D is installed in the pump room. After the equipment is installed, the peripheral hole C of the pump chamber B is backfilled, and the upper surface of the pump chamber B is covered with the lid D with the manhole.

[0004]

The pump chamber B has a predetermined size (first type: L180 × W130 × H).
130 cm, or type 2: L150 x W120 x H11
It is pre-formed with a weight of 3200
Or 2400 kg.

Therefore, when installing the pump room, a large machine such as a crane truck for hoisting the pump room is required, and installation of the pump body, piping work, and electric wiring work must be performed in a narrow pump room. However, the construction itself becomes troublesome.

Therefore, the present invention proposes a new pump chamber and a construction method thereof by dividing the pump chamber so that even small equipment can be suspended and installation work of the pump equipment can be carried out in a wide space. Is.

[0007]

A pump chamber according to the present invention is a box type having a pump chamber bottom portion provided with a well upper end fitting hole and a pump installation base, and a side surface portion provided with a water discharge pipe insertion hole. The pump chamber is composed of a lower pump chamber that has a bottom surface and a partial side surface part that are made of concrete in advance, and a rectangular frame-shaped single or multiple upper pump chambers that consist of only the side surface parts. It is characterized in that an appropriate positioning structure is attached to the abutting portion.

The method for constructing a pump chamber according to the present invention is
Using the above-prepared lower pump chamber and upper pump chamber, excavate the pump chamber buried area around the well installation site, place and fix the lower pump chamber at a predetermined position, and install the pump equipment. After that, the pump chamber is constructed by incorporating the upper pump chamber.

Therefore, since the pump chamber is divided into upper and lower parts, the hanging weight is reduced, and it is possible to install it in a small hanging device, and it is also possible to install it in a place where a large machine is difficult to enter. . Also, because the installation work of the pump equipment will be done with only the lower pump room installed and the peripheral wall does not exist,
The construction space will be wider than before and it will be easier to carry out the construction.

[0010]

Next, an embodiment of the present invention will be described. The pump chamber is composed of a lower pump chamber 1 produced by concrete precasting, an upper pump chamber 2 and a lid 3, and the lower pump chamber 1 is located on the bottom and bottom of the conventional pump chamber. A structure similar to that of a continuous part of the side surface, in which the peripheral wall 12 is raised around the bottom plate 11 and the pump installation base 13 is set at a slightly higher position in the bottom plate 11.
Is provided, a well upper end fitting hole 14 is formed below the installation base portion 13, and a drain hole 15 is further provided from a lower portion of the bottom plate 11 toward the well upper end fitting hole 14, and an upper edge of the peripheral wall 12 is also provided. Is formed in the step portion 16 on the inner and outer circumferences, and at a predetermined position of the peripheral wall 12, a gouged portion 17 corresponding to the lower portion of the insertion hole of the water discharge pipe is formed.

The upper pump chamber 2 is in the shape of a rectangular tube frame that is continuous above the peripheral wall 12 of the upper pump chamber 1, and the lower edge of the peripheral wall 21 is a stepped portion 22 that fits with the stepped portion 16 and a gouging. The gouging portion 23 corresponding to the portion 17 is formed.

The lid 3 is composed of a main body 31 capped on the upper surface of the opening of the upper pump chamber 12, a manhole hole 32 bored in the main body 31, and a manhole cover 33 made of steel.

Next, the procedure for constructing the pump chamber will be described. A well a for pumping groundwater for snow melting is drilled. The well a is a underground pipe with a steel pipe of 200 mm in diameter whose tip end is a perforated pipe. Excavation is performed around the ground surface portion at the upper end of to secure a space b for forming a pump chamber. Next, the lower pump chamber 1 is installed with the upper end portion of the well a fitted into the fitting hole 14 after being firmly compacted with the base material c (FIG. 2).

Next, the pump device d is installed on the lower pump chamber 2. The pump device is a submersible pump, an on-off valve, a control device, or the like installed in the well a, and a water pipe e for supplying water to the water spray nozzle on the road surface is installed. In particular, the equipment installation work described above is performed in a wide excavation space b as is clear from FIG. 3, and the work efficiency is improved.

Next, the upper pump chamber 2 is continuously laminated on the lower pump chamber 1 to form a peripheral wall of the entire pump chamber, and a vertically long insertion hole (grip portion 17, which corresponds to the type of the pump device d) is formed. In 23), the remaining portion through the water pipe e is filled with concrete to form a wall surface, the remaining excavation space b is backfilled, the pump chamber is covered with the lid 3, and the upper surface is the same level as the ground surface. Is to be built.

Although the upper pump chamber 2 is singular, the upper pump chamber 2 may be composed of a plurality of vertically divided parts, and a step portion is adopted as the positioning structure for the side surface portion (peripheral wall), but in particular, It is possible to adopt other arbitrary means such as forming a pin hole in the contact end surface instead of forming the step portion and using a steel pin or the like as the connecting member.

[0017]

As described above, according to the present invention, the pre-cast buried pump chamber is divided into upper and lower parts in advance, and the weight of the hanging member is reduced during the installation work. It is only necessary to bring a small suspension device to the equipment, and by installing the pump equipment after installing the lower pump room, the installation work of the equipment will be a work in a wider space compared to the previous work, It has various advantages such as improved efficiency.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a pump chamber according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of the process of constructing the pump chamber (installation of the lower pump chamber).

FIG. 3 is an explanatory view of the process of constructing the pump chamber (incorporating pump equipment).

FIG. 4 is an explanatory diagram (completed state) of the process of constructing the pump chamber.

FIG. 5 is an explanatory diagram of a conventional pump chamber construction state.

[Explanation of symbols]

 1 Lower Pump Chamber 11 Bottom Plate 12 Circumferential Wall 13 Pump Installation Base 14 Fitting Hole 15 Drainage Hole 16 Stepped Part 17 Grinding Part 2 Upper Pump Chamber 21 Circumferential Wall 22 Stepped Part 23 Part 3 Lid 31 Main Body 32 Manhole Hole 33 Manhole Cover a Well b space c foundation material d pump equipment e water pipe

Claims (2)

[Claims] 1. A box-shaped pump chamber composed of a bottom face portion of a pump chamber provided with a fitting hole at an upper end portion of a well and a pump installation base and a side face portion provided with an insertion hole for a water discharge pipe is previously made of concrete. A lower pump chamber having a bottom surface and a partial side surface;
An embedded pump chamber characterized in that it is composed of a single or a plurality of upper pump chambers in the shape of a rectangular frame consisting of only the side face portions of both chambers, and an appropriate positioning structure is attached to the upper and lower abutting portions of the side face portions. 2. A box-shaped pump chamber consisting of a bottom face of a pump chamber provided with a fitting hole at the upper end of a well and a pump installation base, and a side face provided with a through hole for a water discharge pipe is made of concrete in advance.
A lower pump chamber having a bottom surface and a part of a side surface, and a rectangular frame-shaped single or a plurality of upper pump chambers each having a side surface are produced, and the buried area of the pump room around the well installation site is excavated. , Place and fix the lower pump chamber in place,
A method for constructing an embedded pump chamber, which comprises constructing a pump chamber by installing pump equipment and then incorporating an upper pump chamber.