JP2009150179A - Underground buried type reservoir tank for farmland - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive underground buried type reservoir tank for farmland. <P>SOLUTION: An inspection space 20 penetrating the inside of a box arrayed structure 1 in the height direction is formed by avoiding omission of a box member in an array, and the inspection space 20 is extended to the ground surface. A section of the inspection space 20 between the box arrayed structure 1 and the ground surface is surrounded by auxiliary blocks 3 having the box members 3, and a section of the inspection space opened to the ground surface is provided with an opening/closing lid 9. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is a box arrangement structure in which resin-made box members having openings for communicating inside and outside are arranged in the vertical, horizontal, and height directions to form a water storage space and to bear a load from the surroundings. And an underground buried storage tank for agricultural land comprising a waterproof sheet covering at least the bottom and side surfaces of the box array structure.

  Resin box members having openings are arranged in the vertical, horizontal, and height directions to form a water storage space and bear a load from the surroundings, and the box arrangement structure Underground storage tanks are used that consist of a waterproof sheet covering at least the bottom and side surfaces. FIG. 1 is a sectional view schematically showing such a conventional underground storage tank. The underground storage tank 90 includes a basic block 2 in which a plurality of box members are integrally arranged, a box In order to inspect the inside of the box array structure 1, comprising a box array structure 1 formed by combining an auxiliary block 3 composed of one member and a water shielding protective layer 6 covering the box array structure 1. In addition, an inspection space 91 penetrating the inside of the box array structure 1 in the height direction is formed by not locating and disposing the basic block 3, and a concrete manhole 92 is formed on the inspection space 91, and the lid 93 is placed on the ground. It is arranged so as to open.

  In FIG. 1, reference numeral 11 is an inflow trough that collects rainwater, reference numeral 12 is an outflow trough that temporarily stores rainwater when it flows out of the rainwater storage tank 10, and reference numeral 13 is a water pipe that collects rainwater in the inflow trough 11. Reference numeral 14 is an inflow pipe for guiding rainwater from the inflow trough 11 to the rainwater storage tank 10, reference numeral 15 is an overflow pipe for draining rainwater overflowing from the outflow trough 12, and reference numeral 16 is drained from the outflow trough 12 while restricting the flow rate. The orifice pipe and reference numeral 17 represent overflow pipes for guiding the rainwater overflowed from the inflow trough 11 to the outflow trough 12, respectively.

  However, when an underground buried storage tank is installed on farmland, the investment environment is severe, and it is particularly required to make it inexpensively, and the present invention has been made in view of such problems. The purpose is to provide a low-priced underground storage tank for agricultural land.

<1> is a box arrangement structure in which resin-made box members having openings for communicating inside and outside are arranged in the vertical, horizontal, and height directions to form a water storage space and bear a load from the surroundings. In an underground buried storage tank for agricultural land consisting of a body and a water shielding protective layer covering at least the bottom and side surfaces of the box array structure,
Forming an inspection space penetrating the inside of the box arrangement structure in the height direction by not locating the box members and arranging the inspection space to the ground, the inspection space of the box arrangement structure and It is an underground buried storage tank for farmland in which a portion between the ground is surrounded by the box member, and an opening / closing lid is provided at a portion where the inspection space opens to the ground.

  <2> is an underground buried storage tank for farmland in which the upper surface of the box array structure is covered with a root-proof sheet in <1>.

  According to <1>, since the portion between the box arrangement structure and the ground of the inspection space is surrounded by the box member, an opening / closing lid is provided at a portion where the inspection space opens to the ground. A space can be formed very inexpensively.

  According to <2>, since the upper surface of the box array structure is covered with the root prevention sheet, it is possible to prevent the roots of the plants grown on the farmland from entering the box array structure.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a cross-sectional view schematically showing the rainwater storage tank of this embodiment, and the rainwater storage tank 10 is embedded in the underground F.

  When installing the rainwater storage tank 10, first, rainwater is collected and a concave pit P is dug down from the ground surface of the site to be stored, and the inner surface of the pit P is formed without a gap by the water shielding protective layer 6. After the covering, the box array structure 1 having a predetermined volume formed in a substantially rectangular parallelepiped shape is constructed in the pit P covered with the water shielding protective layer 6.

  Next, the top surface side of the box array structure 1 is covered with the root-proof sheet 7 without a gap, and the outside of the box array structure 1 is sealed with the water-blocking protective layer 6 and the root-proof sheet 7, and then the box array structure 1 The pits P arranged inside are backfilled with soil, and the upper side of the box array structure 1 is covered with a soil covering layer. In addition, the land where the rainwater storage tank 1 is installed in the basement is farmland in this embodiment, and is covered with plants such as crops.

  In the farmland, an inflow tub 11 is embedded around the rainwater storage tank 10, and an outflow tub 12 is embedded adjacent to the rainwater storage tank 10. For example, the inflow rod 11 divides the farmland into a plurality of regions having a predetermined area, and the inflow rod 11 is installed for each region, and rainwater flows into each of the inflow rods 11. Here, the one or more inflow troughs 11 closest to the rainwater storage tank 10 are connected to the other inflow troughs 11 through the water conduit 13. As a result, rainwater that falls on the entire farmland is once collected in the inflow trough 11 that is closest to the rainwater storage tank 10.

  One end of the inflow pipe 14 is connected to a portion near the lower end of the side wall of the inflow trough 11, and the other end of the inflow pipe 14 passes through the water shielding protective layer 6 and communicates with the inside of the rainwater storage tank 10. ing.

  One end portion of the orifice pipe 16 is connected to the lower end portion of the side wall portion of the outflow soot 12, and one end portion of the overflow pipe 15 is connected to the upper end portion of the side wall portion. The other ends of the orifice pipe 16 and the overflow pipe 15 are connected to drainage paths such as water pipes connected to public drainage facilities such as rivers and rivers, drainage culverts, and sewers. Here, the rainwater overflowed from the rainwater storage tank 10 flows into the outflow trough 12, and this rainwater is temporarily stored. The orifice pipe 16 has a function as an orifice for restricting the flow rate of rainwater flowing out from the inside of the outflow trough 12 to the drainage path.

  Here, in this example, the box array structure 1 includes a plurality of resin-made basic blocks 2 shown in a perspective view in FIG. 3 and a plurality of resin-made auxiliary blocks 3 shown in a perspective view in FIG. The basic block 2 is configured by integrally connecting four types of eight box members 4A, 4B, 4C, and 4D with connecting members 21, 23, 25, 27, and the like. It consists of one box member 4E. On the other hand, the box members 4A, 4B, 4C, 4D, and 4E are formed with openings 5 that communicate the inside and outside of the box.

  In order to form the box array structure 1, a plurality of basic blocks 2 are arranged in the same direction in the vertical and horizontal directions to form the first layer, and then the second layer is formed as shown in a perspective view in FIG. The basic blocks 2 are arranged so as to be fitted into the basic blocks 2 in the first layer in a direction orthogonal to the basic blocks 2 in the first layer, and then formed around them as shown in a perspective view in FIG. The auxiliary block 3 is fitted into the gap to complete the second layer, and the third layer and the fourth layer are laminated in the same manner.

  In the rainwater storage tank 10, no box member is arranged for internal inspection, that is, neither the basic block 2 nor the auxiliary block 3 is arranged, so that the hollow inspection space 20 is formed in a box arrangement structure with a substantially square cross section. 1 is formed so as to penetrate in the height direction. And the inspection space 20 is connected from the ground E to the ground E so that it can enter here, but the rainwater storage tank 10 is characterized in that the inspection space 20 from the top surface 1a of the box arrangement structure 1 to the ground. The portion up to E is formed by arranging the box members 40E around it, and when this portion is formed by placing a manhole made of concrete, the manhole itself is expensive. In addition, in order to support this load, the present invention solves the conventional problem that the surroundings of the inspection space 20 of the box array structure 1 had to be reinforced with concrete or the like, which was a factor in increasing costs. can do.

  And in the case of the rainwater storage tank for agricultural land, this invention was made paying attention to being embedded in the agricultural land which can relieve | moderate load conditions significantly, and that investment cost receives restrictions especially. Because it can be done simply by arranging box members instead of manholes, it is possible to significantly reduce the cost of both materials and construction, and the feasibility of introducing rainwater storage tanks for farmland can be improved. .

  7 and 8 are schematic diagrams showing a block arrangement around the inspection space. FIG. 7 corresponds to the AA arrow view in FIG. 2, and FIG. 8 corresponds to the BB arrow view.

  In the cross section corresponding to FIG. 7 in the periphery of the inspection space, a substantially square space is formed by not arranging two of the basic blocks arranged in the same direction, and the box array structure 1 As shown in FIG. 8, the peripheral portion of the inspection space above the top surface 1a is formed by arranging the auxiliary block 3 so as to surround the square without a gap.

  A top plate 8 is disposed in a portion of the inspection space 20 that opens to the ground E so as to be fitted to the arranged auxiliary blocks 3. The top plate 8 has an opening / closing lid 9 for entering and exiting the inspection space 20. Is attached.

  In addition, the rainwater storage tank 10 preferably covers the upper surface of the box array structure 1 with a root-proof sheet 7 so that the roots of the plants growing on the farmland enter the box array structure 1. Can be prevented.

It is sectional drawing which shows typically the underground underground storage tank for agricultural fields. It is sectional drawing which shows typically the underground buried type storage tank for agricultural land of embodiment which concerns on this invention. It is a perspective view which shows a basic block. It is a perspective view which shows an auxiliary block. It is a perspective view which shows a part of box arrangement structure which arranged the basic block. It is a perspective view which shows a part of box arrangement structure which arranged the basic block and the auxiliary block. It is sectional drawing which shows an inspection space periphery part. It is sectional drawing which shows an inspection space periphery part in another cross section.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Box arrangement structure 1a Top surface of box arrangement structure 2 Basic block 3 Auxiliary block 4A, 4B, 4C, 4D, 4E Box member 5 Opening part 6 Water-blocking protective layer 7 Root-proof sheet 8 Top plate 9 Opening and closing lid 10 Rainwater Storage tank 11 Inflow trough 12 Outlet trough 13 Water pipe 14 Inflow pipe 15 Overflow pipe 16 Orifice pipe 20 Inspection space 21, 23, 25, 27 Connecting member E Ground P Pit F Underground

Claims (2)

A box arrangement structure in which resin-made box members having openings for communicating inside and outside are arranged in the vertical, horizontal, and height directions to form a water storage space and bear a load from the surroundings, and this box In an underground buried storage tank for agricultural land consisting of a water shielding protective layer covering at least the bottom and side surfaces of the array structure,
Forming an inspection space penetrating the inside of the box arrangement structure in the height direction by not locating the box members and arranging the inspection space to the ground, the inspection space of the box arrangement structure and An underground buried storage tank for farmland in which a portion between the ground is surrounded by the box member and an opening / closing lid is provided at a portion where the inspection space opens to the ground.   The underground buried storage tank for agricultural land according to claim 1, wherein the upper surface of the box array structure is covered with a root-proof sheet.

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