JP3660917B2

JP3660917B2 - Facility for storing and / or infiltrating rainwater etc. and filling member used for this facility

Info

Publication number: JP3660917B2
Application number: JP2002171558A
Authority: JP
Inventors: 基宗佐々木; 浩次原田; 健二河
Original assignee: Sekisui Chemical Co Ltd
Current assignee: Sekisui Chemical Co Ltd
Priority date: 2002-06-12
Filing date: 2002-06-12
Publication date: 2005-06-15
Anticipated expiration: 2022-06-12
Also published as: JP2004019122A

Description

【０００１】
【発明の属する技術分野】
本発明は、雨水等を貯留及び／又は浸透する施設に係り、特に、雨水と共に流入する砂等を効率よく除去できる雨水等の貯留及び／又は浸透施設と、この施設に使用され貯留部内に充填する充填部材とに関する。
【０００２】
【従来の技術】
従来、例えば大規模な宅地造成地では、造成面積に見合う間隔や規模で調整池を造成している。この調整池は、例えば地面を１ｍ程度掘下げて雨水等の貯留部を形成し、この貯留部に周囲の住宅地からの排水溝や道路の側溝を接続するものであり、集中豪雨等に際しては余分な雨水等を一時貯留して、周囲の住宅地の雨水等の滞留や、河川の氾濫や、下水の河川への流出等を防止するものである。また、貯留部の周囲を透水シートで形成して、雨水を徐々に地面に浸透させるように構成した浸透式の貯留部を用いたものもある。このように貯留部の壁面を防水性シートで形成するか、透水性シートで形成するか、或いは下方を防水性シートで形成し上方を透水性シートで形成することによって、貯留施設、浸透施設、貯留浸透施設として機能させるものである。
【０００３】
この種の雨水等の貯留浸透施設として、特公平４−２６６４８号公報に記載の雨水等の貯留浸透施設がある。この公報に記載の技術は、地面を掘下げてタンク部を構成し、その底部からグランドライン付近まで、複数の容器状部材を縦横かつ上下に配設して充填し、最上部には、被覆手段を施したことを特徴とするものである。そして、容器状部材を多数の孔を有する底部及び周側板で構成し、底部に向かって小さくなるテーパ状に構成したことを特徴とするものである。
【０００４】
また、雨水を貯留する装置として、特開２０００−１６０６０６号公報に記載の雨水貯溜装置がある。この公報に記載の技術は、地面を掘り下げて形成した貯水槽の内部に、複数本の支柱を備えた合成樹脂製充填体を縦横に並べると共に上下に積み重ねて充填し、その上に被覆手段を施した雨水貯溜装置であって、貯水槽の底面に固形分排出用の溝を形成し、少なくとも上方の合成樹脂製充填体の支柱間に多数の水噴射孔を有する散水管、又は多数の排気孔を有する散気管を配設したものであり、充填体に堆積する固形分を簡単に取り除くことができるメンテナンスの容易な雨水貯溜装置を提供するものである。
【０００５】
【発明が解決しようとする課題】
ところで、前記した前者の貯留浸透施設は、雨水と共に砂や汚泥が貯留部に流れ込むことを防止するため、流入部に泥溜め枡を備えているが、長期間使用しているうちに泥溜め枡を通過した砂や汚泥が貯留部の底面に沈殿して堆積する。貯留部は内部に容器状部材が縦横かつ上下に配設して充填されており、堆積した砂や汚泥を除去することが難しい。このため、貯留部の内容積が徐々に少なくなって雨水の貯留量が少なくなり、内容積が極端に少なくなると調整池として機能しなくなる虞があった。その場合、既設の調整池を掘り起こし、充填部材を撤去後に清掃し、再度充填部材を配設しなおすという手間と多額な維持費がかかる。また、必要に応じて新規の貯留浸透施設を造成することとなり、新たな土地を必要とし、土地の有効利用の妨げになるという問題点も生じる。
【０００６】
また、前記した後者の雨水貯溜装置は、貯水槽の内部に散水管や散気管を別途配設するため、構成が複雑となって装置の作製が煩雑となり、費用もかさむという問題点がある。そして、散水管や散気管が貯水槽内に位置するため、その分貯水槽の空隙率が下がり貯水量が減るという問題点がある。さらに、充填体に堆積する固形分を散水管で取り除くときには、貯水槽を空にして散水管から高圧の水を噴射する操作が必要である。
【０００７】
本発明は、このような問題に鑑みてなされたものであって、その目的とするところは、雨水と共に流入する砂や汚泥を所定の場所に誘導して集め、この場所に堆積した砂や汚泥をバキューム等で吸い出すことができ、また、洗浄して除去することができ、長期間使用して貯留部に砂等が堆積しても除去することができ、内容積を充分に確保できる雨水等を貯留及び／又は浸透する施設を提供することにある。
【０００８】
また、雨水等の貯留及び／又は浸透施設において、雨水と共に貯留部に流入する砂や汚泥を雨水と共に一定の方向に誘導し、砂や汚泥を施設の底部の所定の位置に形成した凹窪部に誘導して堆積させ、堆積した砂や汚泥を除去しやすくする充填部材を提供することにある。そして、雨水の貯留部に充填部材を積み重ねるときに、充填部材の強度が大きく施工者が充填部材の上に載って安定して積み重ねることができる充填部材と、この充填部材を使用し施工作業が容易に行える雨水等を貯留及び／又は浸透する施設を提供することにある。
【０００９】
【課題を解決するための手段】
前記目的を達成すべく、請求項１に記載の発明による雨水等を貯留及び／又は浸透する施設に使用する充填部材は、雨水等を貯留及び／又は浸透する施設に使用し、雨水等を貯留する貯留部内に縦横かつ上下に連設して充填する充填部材であって、該充填部材は平面視略正方形の板状で、四隅には該充填部材を上下方向に積み重ねる連結部と、該連結部に固定され、前記貯留部に流入した雨水等を所定方向に誘導する傾斜板部とを備え、該傾斜板部上面は平坦とされると共に、下面には補強部を形成したことを特徴とする充填部材である。この構成によれば、雨水が貯留部内に流入する毎に重力の作用により傾斜板部に沿って自動的に砂等が所定の方向に誘導されて、順次下段の充填部材に移動し、自浄作用を発揮する。従って、貯留部底面に自動的に砂等を所定の方向に誘導して堆積させることが可能なメンテナンス容易な充填部材となる。
又、傾斜板部は下面側に補強部が形成され、上面側は平坦であるため、施工者が傾斜板部上に容易に載ることができ、不要な突出物が無いため施工が容易となる。また、傾斜板部は補強されているため変形が少なく破損を防止でき、作業効率を上げることができる。
【００１４】
請求項２に記載の発明による充填部材は、前記傾斜板部には貫通孔が形成され、前記貫通孔の傾斜板部上面側の周囲には突部が形成されていることを特徴する請求項１記載の充填部材である。貫通孔の位置は、前記空間の上面側の補強リブに対応して、或いは近接して穿設されることが好ましい。この構成によれば、傾斜板部の強度をさらに向上でき、貫通孔の傾斜板部上面側の周囲に形成された突部により、砂等が貫通孔を通して落下することを防止でき、突部が施工者の靴等をグリップするため滑ることが防止され、施工性が良く作業効率が向上する。突部は球面や円錐面で形成されることが好ましい。
【００１５】
請求項３に記載の発明による充填部材は、前記連結部は、断面三角パイプ状であり、底面と側面には貫通孔が形成されていることを特徴とする請求項１又は２記載の充填部材である。このことにより、下方の貫通孔から雨水が進入することができ、側方の貫通孔から内部の空気が逃げることができる。
【００１６】
請求項４に記載の発明による雨水等を貯留及び／又は浸透する施設は、請求項１〜３のいずれか１項に記載の前記充填部材を、前記貯留部内に位置させた雨水等を貯留及び／又は浸透する施設であって、前記傾斜板部に沿って雨水が誘導される前記貯留部の底面に形成した凹窪部を備えることを特徴とする雨水等を貯留及び／又は浸透する施設である。
【００１７】
この構成によれば、砂等を含む雨水は傾斜板部に沿って誘導され、固形分である砂等は底面の凹窪部に落下して堆積する。そして、堆積された砂等の固形分が多量になると、必要に応じて除去して貯留部の所定の貯留量を確保することができ、施設の耐久性を向上できる。
【００１８】
さらに、請求項５に記載の発明による雨水等を貯留及び／又は浸透する施設は、前記充填部材を前記貯留部の下部においては前記連結部同士を直接積み重ね、前記貯留部の上部においては前記連結部に連結部材を挟んで積み重ねることを特徴とする請求項４記載の雨水等を貯留及び／又は浸透する施設である。
【００１９】
この構成によれば、１種類の充填部材を使用して、貯留部の下部においては充填部材が密の状態に積み重ねられ基礎に相当する部分の強度が向上し、上部においては疎の状態に積み重ねられ貯留部の空隙率を高めることができ、コストを低減でき雨水を多量に貯留できる。
【００２１】
請求項６に記載の発明による雨水等を貯留及び／又は浸透する施設は、前記連結部材は、前記充填部材の連結部の上下に嵌合する有底筒状で、水平方向の接合部を外周面に備えると共に、その内部には傾斜した仕切り板を備え、該仕切り板には貫通孔が形成されていることを特徴とする請求項５記載の雨水等を貯留及び／又は浸透する施設である。この構成によれば、充填部材は積み重ねられた上部が接合部で水平方向に繋がれるため、充填部材の上部が揺動することが防止され、傾斜板部に施工者が載ったときに安定するため、施工作業の効率を高めることができる。又、連結部材は内部に土砂を傾斜板部に誘導するために傾斜した仕切り板を備えており、この仕切り板には貫通孔が形成されているので、、雨水の進入と空気の排出も可能となっている。
【００２２】
【発明の実施の形態】
以下、本発明に係る雨水等を貯留及び／又は浸透する施設の一実施形態を図面に基づき詳細に説明する。なお、本実施の形態では、雨水等を貯留する貯留施設について詳細に説明する。図１は、本実施の形態に係る雨水等の貯留施設の断面図、図２は、図１の被覆部材を省略した平面図、図３は、図１のＡ−Ａ線断面図である。
【００２３】
図１〜３において、雨水等の貯留施設は、大雨が降ったときに雨水を一時的に貯留し、河川流量が急激に増大するのを防止する流出抑制効果を有するものである。そして、貯留された雨水等を植木への散水や洗車用水、非常時の生活用水や防火用水として利用することもできるものであり、地面１を掘下げて形成した貯留部１０と、貯留部１０内に水平方向に並べて設置すると共に、上下方向に重ねる多数の充填部材３０と、充填部材３０の最上部に載置され貯留部１０の上部を覆う被覆部材４０とを備えている。
【００２４】
貯留部１０は、地面１を例えば１〜１０ｍ程度の深さで平面形状が矩形状に掘下げて掘削部２を造成し、底面は割栗石等を敷き詰めて突き固めて基礎部３を形成している。貯留部１０の底面は、基本的には平坦面となっており、底面の長辺方向の中央部には平坦面から一段落ち込んだ凹窪部１１が形成されている。この凹窪部１１は底面の短辺方向の全幅に亘って形成されている。凹窪部１１の底面及び貯留部１０の底面全面には、防水シート１２が敷設されている。防水シート１２としては厚さが１．５ｍｍ以上の合成ゴム又は樹脂系シート又はアスファルト系シートを使用している。そして、貯留部１０の底面の凹窪部１１には格子状のフレーム１４が嵌め込まれ、貯留部１０の底面は全面が略平坦となっている。
【００２５】
なお、割栗石等から形成される基礎部３上に保護ボード１３を敷き、その上に防水シート１２を敷設するようにしてもよい。また、前記した保護ボード１３の代わりに、防水シート１２の下に必要に応じてポリエステル系不織布シート等の基礎用シート（図示せず）を敷設し、防水シート１２を基礎部３の割栗石から保護するようにしてもよい。さらに、凹窪部は貯留部の広さに応じて複数本形成し、複数の凹窪部に充填部材３０の後述する傾斜板部で雨水を誘導するようにしてもよい。
【００２６】
前記のように略平坦とされた貯留部１０の底面に、多数の充填部材３０が水平に並べられると共に、上下に重ねられて設置される。本実施の形態では、貯留部１０は図２に示すように充填部材３０を１段に２０個並設するスペースを有し、凹窪部１１の両端に対応する２ヶ所を除いた１８個を１段に並設している。この状態で充填部材３０を７段、直接積み重ねて小さいピッチとし、この上に充填部材３０を４段、連結部材３５を挟んで積み重ねて大きいピッチとしており、充填部材３０は貯留部１０内に充填されて雨水等の貯留空間を確保すると共に、上部の被覆部材４０を支持するものである。
【００２７】
２個の充填部材が除かれた貯留部１０内を上下方向に貫通するスペースには、凹窪部１１に連通する角型マンホール１５，１６を設置している。そして、充填部材３０の傾斜板部で誘導された雨水が砂等と共に凹窪部１１に誘導され落下する構成となっている。また、この角型マンホール１５，１６は、凹窪部１１に堆積された砂等の堆積物を除去する際に、バキューム管や洗浄水を噴射する管を通すスペースとして利用される。
【００２８】
充填部材３０は、図４〜６に詳細に示すように、ポリエチレン、ポリプロピレン、塩化ビニル、ポリエチレンテレフタレート等のプラスチックや、これらの廃プラスチック等から形成され、貯留部１０の上部を覆う被覆部材４０の垂直荷重、及び水圧による水平荷重を支持し、貯留部１０の空間を確保する４本の柱状の連結部３１と、４本の連結部３１に固定され水平面に対して５度程度の角度で傾斜する傾斜板部３２とから構成されている。
【００２９】
傾斜板部３２は厚さが４〜５ｍｍ程度の肉厚の板材で形成され、流入した雨水等を所定方向に誘導する誘導手段を構成する。傾斜板部３２の傾斜方向Ｓは、矢印の先端が低い方向となっており、傾斜角度が緩やかな場合砂等が雨水と共に流れずに滞留するため、５度程度の傾斜角度が好ましい。充填部材３０の大きさは、例えば１辺が５０ｃｍ〜１ｍ程度の正方形の傾斜板部３２と、傾斜板部の四隅に上下に延びる連結部３１とから構成され、連結部は高さが１０〜１５ｃｍ程度の三角柱で形成され、１辺が５０ｃｍ〜１ｍ程度で高さが１０〜１５ｃｍ程度の直方体に納まるような形状をしている。
【００３０】
なお、充填部材３０の大きさは、１辺が３０ｃｍ程度の大きさでも、また１辺が１ｍ以上の大きさでもよい。また、充填部材３０の傾斜板部３２は平板を傾斜させた例を示したが、平板でなく傾斜方向に沿って緩やかに凹んだ、或いは緩やかに凸状に膨らんだ湾曲面でもよく、小さい段差が連続して勾配が付いた階段状の傾斜面でもよい。さらに、急勾配から緩勾配に途中で変化するような傾斜面で構成してもよい。
【００３１】
連結部３１は厚さが４〜５ｍｍ程度の肉厚の板材で形成され、大きい断面の三角パイプ状の上部柱部３１ａの下方には、上部柱部３１ａの内部に嵌合する小さい断面の三角パイプ状の下部柱部３１ｂが形成されている。したがって、充填部材３０の上部柱部３１ａに、他の充填部材３０の下部柱部３１ｂを内嵌させることにより充填部材３０同士を小さいピッチ、すなわち連結部３１の高さのピッチで積み重ねることができる。三角パイプ状の連結部３１の底面と側面には上下に貫通孔３１ｃ，３１ｄが形成され、下方の貫通孔から雨水が進入することができ、側方の貫通孔から内部の空気が逃げることができる。なお、下部柱部３１ｂは、コーナー部が切欠かれているが連続したものでもよい。また、連結部３１内の底面は土砂等を傾斜板部３２に誘導するために、側面の貫通孔方向に傾斜していることが好ましい。
【００３２】
傾斜板部３２の下面には補強部が形成され、上面は平坦で緩やかな傾斜面となっている。補強部としては、所定の間隔で一体的に縦横に立設された格子状の補強リブ３３が形成されている。この補強リブ３３は傾斜板部３２の中央部の上下幅が大きく、周辺に行くにしたがって上下幅が徐々に小さくなるように形成されている。この構成により、傾斜板部３２の上面に荷重が加わっても傾斜板部３２の変形は小さくなり、上面に施工者が載ってもひび割れ等の破損が生じることを防止できる。なお、補強リブは格子状でなくてもよいが、格子状にすると一方向のものと比較して強度が大きくなり好ましく、六角形のハニカム格子状が強度面からより好ましい。
【００３３】
補強部である補強リブ３３には、この補強リブで囲まれた下方開口の空間が形成され、この空間の上部と連通する開放部３４が形成してある。開放部３４としては、補強リブ３３の一部を切欠き隣接する下方開口の空間と連通するように構成する。この構成により、貯留部１０に下方から徐々に雨水が溜まって上昇してきたとき、この下方開口の空間に空気が溜まったままとならず、空気が開放部３４から隣接する空間に移動して代わりに雨水が進入することができると共に、浮力による充填部材の浮き上がりを防止することができることとなり、貯留部１０に雨水を充満させて所定の貯留量を確保することができるものとなる。なお、補強リブ３３を切り欠いた開放部３４でなく、補強リブ３３の上部を水平方向に貫通する孔（図示せず）を形成して連通させてもよい。
【００３４】
充填部材３０は連結部３１の上部に連結部材３５を挟んで積み上げることにより、大きいピッチで積み重ねることができる。連結部材３５は三角パイプ状の連結部３１を繋ぐものであり、図７に示すように上方の大きい三角パイプ状の連結部３６は充填部材３０の下部柱部３１ｂを外嵌し、下方の小さい略三角パイプ状の連結部３７は充填部材３０の上部柱部３１ａに内嵌されるように構成されている。連結部材３５の高さを調整することにより、充填部材３０を積み重ねるピッチを任意に設定することができる。また、図示していないが、連結部の高さの大きい充填部材と、小さい充填部材の２種類の充填部材を準備し、小さいピッチ又は大きいピッチで積み重ねるようにしてもよい。なお、連結部３７は一部が切欠かれているが、連続したものでもよい。
【００３５】
連結部材３５は外側の直交する垂直面に水平方向の接合部３８を備えている。垂直面の一方には接合凸部３８ａが突出形成され、垂直面の他方には接合凸部３８ａが嵌合する接合孔３８ｂが形成されている。接合凸部３８ａは、接合孔とほぼ同じ直径の根元の小径部と、その上部の先端が傾斜している大径部とから構成され、小径部と大径部に掛けてスリットが形成され、大径部は内側に湾曲して縮径することができる。この構成により、接合凸部３８ａは接合孔３８ｂに嵌合して保持され、連結部材３５同士を水平方向に接合することができる。連結部材３５は土砂を傾斜板部３２に誘導するために傾斜した仕切り板を備えており、この仕切り板の低い位置には貫通孔３９が形成され、雨水の進入と空気の排出も可能となっている。
【００３６】
連結部材３５は、図８（ａ）、図９（ａ）に示すように、接合部３８の接合凸部３８ａを接合孔３８ｂに嵌合させることにより２個の連結部材３５を接合することができる。このように２個を接合させた連結部材は、充填部材３０が貯留部１０の外周側に位置しているときに使用する。また、図８（ｂ）、図９（ｂ）に示すように、接合部３８の接合凸部３８ａを接合孔３８ｂに嵌合させることにより４個の連結部材３５を接合することができる。この場合は、充填部材３０が貯留部１０の中心側に位置しているときに使用する。なお、使用していない接合凸部３８ａで突出しているものは、刃物等で切断して平坦としてもよい。また、角型マンホール１５，１６の角部に対向する充填部材３０を接合するときは、図示していないが３個の連結部材を接合して使用する。
【００３７】
本実施の形態では、図２において左端の縦一列の４個の充填部材３０は雨水を誘導する傾斜方向Ｓ１が右方向に向くように、すなわち貯留部の中央の凹窪部１１に向けて誘導するように配置され、右端の縦一列の４個の充填部材３０も傾斜方向Ｓ１が左方向に向いて貯留部の中央の凹窪部１１に向けて誘導するように配置されている。そして、左端から２番目の縦一列の４個の充填部材３０は、上から順に傾斜方向Ｓが下向きＳ３、右向きＳ１、上向きＳ４、上向きＳ３になるように配置され、右端から２番目の縦一列の４個の充填部材３０は上から順に傾斜方向Ｓが下向きＳ３、左向きＳ１、左向きＳ１、上向きＳ３になるように配置される。中央上側の充填部材３０は、傾斜方向Ｓが同図において下向きＳ２になるように配置され、中央下側の充填部材３０は左向きＳ３になるように配置されている。
【００３８】
前記の傾斜方向は以下のように決定されている。第１に充填部材の傾斜方向Ｓ１は凹窪部１１に向けられる。第２に凹窪部の上部に位置する充填部材は傾斜方向Ｓ２のように流出側に向けられる。第３に連通路であるマンホール部分では、雨水が行き止まりにならないように別の方向に傾斜方向Ｓ３のように逃がす。そして、第４に隣同士の充填部材の傾斜方向が向き合わないように傾斜方向Ｓ４とする。この結果、流出側のマンホール部分では、一部の雨水が右回りに旋回する旋回流Ｓ５が生じて徐々に傾斜板部の隙間から落下するように構成される。なお、傾斜方向Ｓ３を右向きとし、右側の充填部材の傾斜方向Ｓ４を上向きにすることにより旋回流を中央より右側に、左回りとするようにしてもよい。
【００３９】
このため、雨水は充填部材３０により中央の凹窪部１１に向けて誘導されると共に、凹窪部１１に向けて徐々に落下して誘導される構成となっている。充填部材３０はこのような誘導方向で、小さいピッチで７段積み重ねたあと、大きいピッチで４段積み重ねられる。なお、小さいピッチで積み重ねた場合は、傾斜板部３２は下段側の誘導方向の傾斜板部３２と僅かな段差で連続し、雨水を連続的に誘導できる。
【００４０】
このように１段に１８個連設して、１１段積み重ねられた充填部材３０は、基礎に相当する下半分が小さいピッチで積み重ねられて強度が大きくなっており、上半分は大きいピッチで空隙率が大きくなっている。また、充填部材３０を高く積み重ねると不安定となるが、上部の充填部材３０は連結部材３５の接合部３８で水平方向に接合されているため安定し、施工が容易となる。さらに、充填部材３０は積み重ね状態が安定しているため、上部の被覆部材４０を安定して支持することができ、雨水等を貯留及び／又は浸透する施設の耐久性を向上させることができる。
【００４１】
充填部材３０は、単位体積当たりの空隙率が高いことや、実用上十分な強度、耐久性を有することが要求されると共に、運搬施工が容易であり、維持管理が容易であることが要求され、耐荷重は例えば垂直方向は１平方メートル当たり５〜２０トン、水平方向は５〜１６トン、空隙率は９０％程度が好ましい。また、前記のように連結部３１にスリットや貫通孔を設けて内部に雨水等が入るようにして空隙率を上げることが好ましい。
【００４２】
充填部材３０が上下に１１段に積層され設置されたあと、充填部材３０の側面を覆う壁材２０が立設され、その外側に防水シート２１が垂直方向に配置され、さらに外側には砂利や砕石等の埋め戻し材２２が掘削部２との間に充填される。壁材２０は、この外側に位置する防水シート２１が貯留部１０の空間に入り込むのを防止している。防水シート２１は貯留部１０の底面に敷いたものと同等の合成ゴム又は樹脂系シートを使用し、底面の防水シート１２と漏水しないように、融着又は防水性の接着剤等で接合されている。防水シート２１を砂利等の埋め戻し材２２から保護するため、防水シート２１の外側に壁材２０と同等の保護板２３を配置してもよい。
【００４３】
なお、貯留施設でなく、浸透施設とする場合は、防水シート１２，２１の代わりに、例えばポリエステルとポリプロピレンの複合張合わせをした透水シートを敷設する。浸透型の施設の場合、貯留部に溜まった雨水等を徐々に地面に浸透させる。また、貯留と浸透の両方の機能を持たせる場合は、底面を防水シート１２とし、側面の途中まで防水シート２１を敷設し、側面の途中から上を透水シートで覆うようにする。この貯留浸透型の施設の場合、上半分の透水シートから雨水等を徐々に地面に浸透させ、下半分は貯留して利用する。
【００４４】
貯留部１０には、周辺に降った雨水等を集める側溝等からの導水管２５が接続される。そして導水管２５の途中には泥溜め枡２６が設置され、雨水中の砂や泥が沈殿され、上澄み水が貯留部１０に導水管２５によって導入される構成となっている。導水管２５は複数本が泥溜め枡２６から延出して貯留部１０の壁材２０と防水シート２１を貫通して等間隔に挿入されている。なお、複数の導水管２５は、その長さを変えて貯留部１０の奥に雨水を流入させるように構成してもよい。これにより、貯留部１０の長辺方向に沿って均一に雨水等を導入することができる。
【００４５】
貯留部１０の上部からオーバーフロー管２７が突出しており、貯留部１０の下部からはオリフィス管２８が突出している。オーバーフロー管２７は貯留部１０が満水に近い状態となると上部から放流するものである。オリフィス管２８は貯留部１０に溜められた雨水を徐々に流出させるものであり、オリフィスの径を調整して流出量を調整できる。貯留部１０に溜まった雨水を利用するときには、貯留部１０内の雨水をポンプで汲み上げて、植木への散水や洗車用水として利用することもできる。
【００４６】
貯留部１０の上部開口は被覆部材４０が覆っている。被覆部材４０は多数の充填部材３０の上部に載置される被覆ボード４１と、この上に敷設された防水シート４２と、この上に埋め戻された埋め戻し層４３とから構成される。被覆ボード４１は、図示していないが充填部材３０の上部の連結部が嵌合する凹部を有すると充填部材に安定して載置できて好ましい。被覆ボード４１の角型マンホール１５，１６に対応する位置に連通口１７を固定する。そして、防水シート４２を連通口１７に接合すると共に、防水シート４２と側面の防水シート２１は重ね合わせて側面で接合する。これにより凹窪部１１は、角型マンホール１５，１６と、連通口１７を通して地面に開口し、連通口１７から洗浄水やバキューム等のホースを挿入して凹窪部１１にホースの先端を到達させることができる。連通口１７は通常は図示していない蓋により閉じられている。なお、防水シート４２の上に、保護ボード４４や保護シートを敷くようにしてもよい。
【００４７】
このようにして貯留部１０は、底面の防水シート１２と、側面の防水シート２１とにより、雨水等を貯留することができ、防水シート１２，２１と上面の被覆部材４０の防水シート４２とにより内部空間が構成される。そして、被覆部材４０の埋め戻し層４３により、地面１と同じ平面に埋め戻される。なお、貯留部１０の上部の防水シート４２を透水シートで構成し、貯留部１０の上部に降った雨水を埋め戻し層４３、透水シート、被覆ボード４１を通して直接、貯留部１０に貯留するようにしてもよい。また、被覆部材は前記の構成に限らず、充填部材の上部に単にコンクリート板等を並べるような構成でもよい。
【００４８】
前記の如く構成された本実施形態の雨水等を貯留及び／又は浸透する施設の充填部材の積み重ね動作について以下に説明する。地面１を掘下げて掘削部２を形成し、掘削部２の底面に基礎部３を形成する。基礎部３の長辺方向の中央部に短片方向に全幅に亘って凹窪部１１を形成する。
【００４９】
貯留部１０の底面に防水シート１２を敷き、フレーム１４をはめ込んだあと、貯留部１０の底面に充填部材３０を並べる。なお、最下段に貫通孔を多数穿設した下地ボードを敷き、その上に充填部材３０を積み重ねるようにしてもよい。貯留部１０の最下段に充填部材３０を傾斜板部３２が所定の方向に向くように１８個並べ、その上に２段目の充填部材３０を積み重ねる。２段目の充填部材３０は１段目の充填部材３０の連結部３１の上部柱部３１ａに、２段目の充填部材３０の下部柱部３１ｂを内嵌させて直接連結し、小さいピッチで積み重ねられる。２段目の充填部材３０も傾斜板部３２が所定の方向に向くように積み重ねる。
【００５０】
充填部材３０は正方形の傾斜板部３２の四隅に連結部３１が突出し、傾斜板部３２は下面側に補強リブ３３が形成され上面側は平坦であるため、施工者が傾斜板部３２上に容易に載ることができ、不要な突出物が無いため施工が容易となる。また、傾斜板部３２は補強されているため変形が少なく破損を防止でき、作業効率を上げることができる。このようにして、貯留部１０内に充填部材３０を本実施の形態では小さいピッチで、すなわち充填部材３０同士を直接７段積み重ねる。
【００５１】
このあと、充填部材３０の連結部３１の上に、連結部材３５を挟んで充填部材３０を積み重ねる。すなわち、１つの充填部材３０の４つの連結部３１の上部柱部３１ａに、４つの連結部材３５の下方の連結部３７を内嵌させ、連結部材３５の上方の連結部３６に充填部材３０の下部柱部３１ｂを内嵌させる。連結部３１が貯留部１０のコーナーに位置しているときは連結部３１の上部に１つの連結部材３５を重ねて押し込む。また、貯留部１０の外周で連結部３１，３１が２つ並んでいるときは、図８（ａ）に示すように２つの連結部材３５を接合部３８で接合して、２つの連結部３１，３１に重ねて押し込む。
【００５２】
さらに、貯留部１０の中間部では４つの連結部３１…が接しているが、この場合は図８（ｂ）に示すように４つの連結部材３５…を接合部３８で接合してから、４つの連結部３１…の上に載せて押し込む。角型マンホール１５，１６に接している充填部材３０は、３つの連結部材３５を接合して３つの連結部３１の上に載せて押し込む。これにより、２〜４つの連結部材３５は接合凸部３８ａを接合孔３８ｂに嵌合させて水平方向に連結されているため、７段積み重ねられた充填部材３０の上部が揺れて不安定になることを防止できる。
【００５３】
このようにして７段目の充填部材３０と８段目の充填部材３０を連結部材３５で連結し、連結部材３５同士は接合部３８により水平方向に関連付けられるため整然と並べることができ、充填部材３０の垂直方向の強度を向上させることができる。同様にして、９段目から１１段目まで連結部材３５を挟んで３段積み重ねて充填部材３０の積み重ね動作を完了する。充填部材３０が積み重ねられ、施工者が載る面が底面から高くなると充填部材３０が揺れて施工しにくくなるが、上部の充填部材３０は連結部材３５で水平方向に繋げられるため充填部材３０の水平方向の揺れを防止でき、施工者が安定して作業できるため作業効率が向上し施工が容易となる。充填部材３０は下部が小さいピッチで積み重ねられ強度が向上し、上部が大きいピッチで積み重ねられ空隙率が向上する。
【００５４】
この貯留施設の周辺に雨が降り、側溝等により雨水が集められて泥溜め枡２６に流入し、ここで泥分が沈殿されて上澄み水が導水管２５から貯留部１０に導入される。貯留部１０に雨水が導入されると、上部の大きいピッチの充填部材３０で雨水及び砂や小砂利等は傾斜板部３２で中央に向けて誘導され、上段の充填部材３０から落ちた砂等は下段の充填部材３０で中央に誘導され、砂等を含む雨水は凹窪部１１の方向に誘導され落下する。そして砂等の固形分は凹窪部１１に沈殿する。従って、貯留部１０の底面全面に亘って、砂や汚泥が堆積することがなく、傾斜板部３２によって誘導された凹窪部１１に砂や汚泥が集中して堆積する。しかも、雨水が流入する際に、自動的に砂等が所定の方向に誘導され自浄されるため、固形分を充填部材から取り除くための洗浄等の操作を必要としない。
【００５５】
雨水が徐々に上昇し充填部材３０の補強リブ３３に到達すると、補強リブ３３に囲まれた下方開口の空間の空気は雨水面に押されて空気は開放部３４から逃げ、空間内には雨水が充満する。そして、補強リブ３３に囲まれた次の空間にも雨水が進入して充満され、このように下方に開口する空間内にも徐々に雨水を充填させることができ、貯留部１０内に雨水を効率良く貯留することができる。
【００５６】
雨水に含まれる砂や汚泥は少量であるが、貯留施設を長期間使用すると砂等は徐々に堆積して量が増していく。また、降雨が激しいときは、泥溜め枡２６を通過して流入する砂等が増える。このようにして凹窪部１１に堆積した砂等の堆積物は、地面に開口する連通口１７から目視で判断することができ、ある程度の量となった時点で連通口１７から、例えばバキューム管を角型マンホール１５，１６に挿入して砂等の堆積物を吸い出して除去する。また、一方の角型マンホール１５から高圧洗浄水を噴射し、他方の角型マンホール１６から吸い出すと効率よく堆積物を除去できる。このため、貯留部１０に砂等が堆積して内容積が減少し、雨水の貯留量が減ることを防止できる。
【００５７】
降雨量が多く、導水管２５から多量の雨水等が流れ込み貯留部１０が満水状態となると、貯留部上部のオーバーフロー管２７から雨水は流出し、図示していない下水管等に排水される。貯留部１０内に溜められた貯留水を散水等に利用するときは、貯留部内の雨水をポンプで汲み上げて利用することができる。また、オリフィス管２８の途中に取水枡を設けて、ここから貯留水を取水して利用するようにしてもよい。
【００５８】
つぎに、本発明の充填部材の他の実施形態を図１０に基づき詳細に説明する。図１０は本発明に係る雨水等を貯留及び／又は浸透する施設に使用する充填部材の他の実施形態の斜視図と、要部断面図である。なお、この実施形態は前記した実施形態に対し、補強部を構成する補強リブの本数と、補強リブにより構成される下方開口の空間の上部と連通する開放部が異なっていることを特徴とする。そして、他の実質的に同等の構成については同じ符号を付して詳細な説明は省略する。
【００５９】
図１０において、この充填部材３０Ａは、傾斜板部３２の傾斜方向に沿って４本の補強リブ５１が形成され、この補強リブに直交する方向の３本の補強リブ５２が形成されている。そして、両方の補強リブが交差する部分に突球面の一部で構成される突部５３が形成され、突部の頂点から下方に向けて円柱状の貫通孔５４が開放部として形成され、この貫通孔５４が補強リブ５１，５２で形成される下方開口の空間と連通している。すなわち、円柱状の貫通孔５４の直径ｄが補強リブ５１，５２の肉厚ｔより大きく形成され、貫通孔５４が空間と連通するように構成されている。
【００６０】
この実施形態においては、雨水が傾斜板部３２に沿って流れるときには突出する突部５３の周囲を矢印５５のように流れて貫通孔５４に雨水が流入せず、このため雨水に含まれる砂等が貫通孔５４から落下することはなく、雨水と共に砂等は傾斜板部３２に沿って所定の方向に誘導される。雨水が貯留部１０の底面から徐々に上昇し補強リブ５１，５２で構成される下方開口の空間を塞いでも、空間内の空気は貫通孔５４から傾斜板部３２の上部に抜けるため、空間内に雨水が充満することができ雨水の貯留量を減らすことはない。また、施工時に傾斜板部３２上に施工者が載っても、傾斜した平坦面に突部５３が形成されているため靴等が滑ることがなく、安定した状態で施工することができ、施工者の転倒等を防止できる。
【００６１】
この実施の形態では、補強リブ５１，５２の自由端側が開放部で分断せず、長手方向に連続しているため、補強リブの本数を減らしても所定の強度を得ることができる。また、補強リブの交差部分に開放部として貫通孔５４を形成するため、隣接する２つの空間を同時に開放することができ、開放部の個数を減らすことができる。なお、貫通孔５４は補強リブ５１，５２の交差部分に形成することに限らず、図１１に示すように横方向の補強リブ５２の途中に近接して形成してもよい。この場合は１つの空間に対して１つの貫通孔５４が必要となる。
【００６２】
つぎに、図１２を参照して貯留部の他の実施形態を説明する。この実施形態は、前記した実施形態と比べて、貯留部の構成と充填部材の配置が異なることを特徴とするものであり、前記の構成と実質的に同等の構成については同じ符号を付して詳細な説明を省略する。図１２は前記した図２の平面図に相当する模式図であり、同図において、貯留部１０Ａは、充填部材を１列に２５個連設できるスペースを有しており、このスペースの外側に２個の連通路１５Ａ，１６Ａを備えている。そして、これらの連通路は図示していないが地面に開口している。貯留部の底面には、２個の連通路を繋ぐように凹窪部としてＵ字溝１１Ａが形成されている。
【００６３】
この例においては、充填部材３０は５×５に縦横に並べられると共に、上下方向に積み重ねられる。左端の縦の５個の充填部材は、傾斜方向Ｓが右側を向くように配置され、左端から２列目の５個の充填部材は上の４個が右側を向き、下の１個が上を向くように配置されている。また、右端の縦の５個の充填部材は傾斜方向Ｓが左側を向くように配置され、右端から２番目の縦の５個の充填部材も左側を向くように配置されている。そして、中央の上から４個の充填部材は傾斜方向Ｓが下側を向くように配置され、中央下側の１個の充填部材が左側を向くように配置され、雨水を充填部材３０の傾斜板部でＵ字溝１１Ａに誘導している。
【００６４】
各充填部材３０の傾斜方向Ｓの向きは、以下のように決められている。すなわち、傾斜方向Ｓ１は、先ず凹窪部であるＵ字溝１１Ａに向けられる。次に、Ｕ字溝１１Ａの上部に置いては傾斜方向Ｓ２のように流出側（下方の連通路１６Ａ）に向けられる。最後に、連通路の周辺においては、雨水が行き止まりにならないように横方向に逃がして傾斜方向Ｓ３とし、隣同士の傾斜方向が向き合わないように傾斜方向Ｓ４としている。
【００６５】
この構成によると、貯留部１０Ａに雨水が流入されると、外側の充填部材３０から内側の充填部材３０に向けて傾斜方向Ｓ１で雨水は誘導され、中央の充填部材３０により傾斜方向Ｓ２で下方の連通路１６Ａに向けて誘導され、中央下方の部分において、傾斜方向Ｓ３方向に左向きに誘導され、さらに傾斜方向Ｓ４で上方に誘導されて、矢印Ｓ５で示すように雨水は旋回流が生じて充填部材３０の隙間から徐々に落下する。このようにして雨水と共に流入した固形分である砂等は充填部材同士の隙間から徐々に下段の充填部材に落下し、徐々にＵ字溝方向に誘導され、Ｕ字溝１１Ａに堆積される。
【００６６】
このようにして、Ｕ字溝１１Ａに堆積された砂等の固形分は、連通路１５Ａ，１６Ａから見ることができる。そして、堆積量が多くなると一方の連通路１５Ａから洗浄水を注入し、他方の連通路１６Ａからバキューム管を挿入して固形分を吸い出すことができるので、貯留部１０Ａ内に所定の貯留量を確保することができ、貯留施設等の耐久性を向上されることができる。この貯留施設においても、砂等の固形分は雨水により自動的に自浄され凹窪部に誘導されるため、固形分を取り除く洗浄等の操作は不要である。
【００６７】
なお、前記した実施形態では、凹窪部１１と連続して地面に開口する連通路として、角型マンホール１５，１６の例を示したが、充填部材を配置しないスペースとしたままで凹窪部と連通させるように構成してもよい。また、凹窪部を覆って平坦とする格子状のフレーム材の代わりに、水や砂を通過させることができるメッシュの板材を敷くようにしてもよい。さらに、泥溜め枡２６は貯留部１０に近接して１つだけ配置する例を示したが、貯留部の周囲に複数個設け、複数個の泥溜め枡から雨水等を貯留部に流入させるように構成してもよい。
【００６８】
連通路として貯留部の内部に上下に貫通する角型マンホールを２個設けるように構成したが、１個の角型マンホールを連通路として貯留部の内部に設ける構成としてもよい。充填部材は小さいピッチで７段積み重ね、大きいピッチで４段積み重ね合計１１段積み重ねた例を示したが、この段数に限られるものでないことは勿論であり、貯留部の高さに応じて任意の段数とすることができる。
【００６９】
【発明の効果】
以上の説明から理解できるように、請求項１に記載の充填部材によれば、雨水や砂等の固形分は傾斜板部に沿って重力の作用により自動的に所定の方向に誘導され、順次下段の充填部材に移動して誘導手段は自浄される。そして、砂等を所定の方向に堆積させることができるので、メンテナンスが容易な雨水等を貯留及び／又は浸透する施設を達成できる。
又、傾斜板部は下面側に補強部が形成され、上面側は平坦であるため、施工者が傾斜板部上に容易に載ることができ、不要な突出物が無いため施工が容易となる。また、傾斜板部は補強されているため変形が少なく破損を防止でき、作業効率を上げることができる。
【００７１】
請求項２に記載の発明による充填部材は、前記傾斜板部には貫通孔が形成され、前記貫通孔の傾斜板部上面側の周囲には突部が形成されていることを特徴する請求項１記載の充填部材である。この構成によれば、貫通孔の傾斜板部上面側の周囲に形成された突部により、砂等が貫通孔を通して落下することを防止でき、突部が施工者の靴等をグリップするため滑ることが防止され、施工性が良く作業効率が向上する。
請求項３に記載の発明による充填部材は、前記連結部は、断面三角パイプ状であり、底面と側面には貫通孔が形成されていることを特徴とする請求項１又は２記載の充填部材である。このことにより、下方の貫通孔から雨水が進入することができ、側方の貫通孔から内部の空気が逃げることができる。
【００７２】
請求項４に記載の発明による雨水等を貯留及び／又は浸透する施設は、請求項１〜３のいずれか１項に記載の前記充填部材を、前記貯留部内に位置させた雨水等を貯留及び／又は浸透する施設であって、前記傾斜板部に沿って雨水が誘導される前記貯留部の底面に形成した凹窪部を備えることを特徴とする雨水等を貯留及び／又は浸透する施設である。
この構成によれば、砂等を含む雨水は傾斜板部に沿って誘導され、固形分である砂等は底面の凹窪部に落下して堆積する。そして、堆積された砂等の固形分が多量になると、必要に応じて除去して貯留部の所定の貯留量を確保することができ、施設の耐久性を向上できる。
さらに、請求項５に記載の発明による雨水等を貯留及び／又は浸透する施設は、前記充填部材を前記貯留部の下部においては前記連結部同士を直接積み重ね、前記貯留部の上部においては前記連結部に連結部材を挟んで積み重ねることを特徴とする請求項４記載の雨水等を貯留及び／又は浸透する施設である。
この構成によれば、１種類の充填部材を使用して、貯留部の下部においては充填部材が密の状態に積み重ねられ基礎に相当する部分の強度が向上し、上部においては疎の状態に積み重ねられ貯留部の空隙率を高めることができ、コストを低減でき雨水を多量に貯留できる。
【００７３】
請求項６に記載の発明による雨水等を貯留及び／又は浸透する施設は、前記連結部材は、前記充填部材の連結部の上下に嵌合する有底筒状で、水平方向の接合部を外周面に備えると共に、その内部には傾斜した仕切り板を備え、該仕切り板には貫通孔が形成されていることを特徴とする請求項５記載の雨水等を貯留及び／又は浸透する施設である。この構成によれば、充填部材は積み重ねられた上部が接合部で水平方向に繋がれるため、充填部材の上部が揺動することが防止され、傾斜板部に施工者が載ったときに安定するため、施工作業の効率を高めることができる。又、連結部材は内部に土砂を傾斜板部に誘導するために傾斜した仕切り板を備えており、この仕切り板には貫通孔が形成されているので、、雨水の進入と空気の排出も可能となっている。
【図面の簡単な説明】
【図１】本発明に係る雨水等を貯留及び／又は浸透する施設の一実施形態の断面図。
【図２】図１の被覆部材を省略した平面図。
【図３】図１のＡ−Ａ線断面図。
【図４】図１の施設に使用する充填部材の上方の斜視図。
【図５】図１の施設に使用する充填部材の下方の斜視図。
【図６】（ａ）は図４のＢ−Ｂ線断面図、（ｂ）は図４のＣ−Ｃ線断面図。
【図７】図１の施設に使用する連結部材を示し、（ａ）は上方の斜視図、（ｂ）は下方の斜視図。
【図８】（ａ）は図７の連結部材を２つ組んだ状態の斜視図、（ｂ）は４つ組んだ状態の斜視図。
【図９】（ａ）は図７の連結部材を２つ組んだ状態の平面図、（ｂ）は４つ組んだ状態の平面図。
【図１０】充填部材の他の実施形態を示し、（ａ）は斜視図、（ｂ）は（ａ）のＤ−Ｄ線に沿う要部断面図。
【図１１】充填部材のさらに他の実施形態の要部断面図。
【図１２】貯留部の他の実施形態の概略構成を示す模式図。
【符号の説明】
１地面、２掘削部、
３基礎部、１０，１０Ａ貯留部、
１１凹窪部、１１ＡＵ字溝（凹窪部）、
１２防水シート、１４フレーム、
１５，１５Ａ，１６，１６Ａ角型マンホール（連通路）、
１７連通口、
２０壁材、２１防水シート、
３０，３０Ａ充填部材、
３１連結部、
３２傾斜板部（誘導手段）、
３３補強リブ（補強部）、
３４開放部、
３５連結部材、３８接合部、
３８ａ接合凸部、３８ｂ接合孔、
４０被覆部材、４１被覆ボード、
４２防水シート、４３埋め戻し層、
５１，５２補強リブ（補強部）、
５３突部、５４貫通孔（開放部）、
Ｓ，Ｓ１〜Ｓ４傾斜方向（誘導方向）
Ｓ５旋回流[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a facility for storing and / or infiltrating rainwater and the like, and in particular, a storage and / or infiltration facility for rainwater and the like that can efficiently remove sand flowing in along with rainwater, and filling in a storage unit used in this facility. And a filling member.
[0002]
[Prior art]
Conventionally, for example, in large-scale residential land development sites, adjustment ponds are created at intervals and scales commensurate with the development area. This adjustment pond, for example, digs up the ground about 1 m to form a reservoir for rainwater, etc., and connects the drainage drainage from the surrounding residential area and the side ditch of the road to this reservoir. Temporary rainwater and the like are temporarily stored to prevent stagnation of rainwater in the surrounding residential area, flooding of rivers, outflow of sewage to rivers, and the like. In addition, there is a type that uses a permeation type storage unit that is configured to form a permeation sheet around the storage unit and gradually infiltrate rainwater into the ground. Thus, by forming the wall surface of the storage part with a waterproof sheet, or a water-permeable sheet, or by forming the lower part with a waterproof sheet and the upper part with a water-permeable sheet, the storage facility, the infiltration facility, It functions as a storage and infiltration facility.
[0003]
As this type of storage and penetration facility for rainwater and the like, there is a storage and penetration facility for rainwater and the like described in Japanese Patent Publication No. 4-26648. The technology described in this publication forms a tank part by digging the ground, filling a plurality of container-like members arranged vertically and horizontally and vertically from the bottom part to the vicinity of the ground line, and at the top part, covering means It is characterized by having been subjected to. The container-like member is constituted by a bottom portion having a large number of holes and a peripheral side plate, and has a tapered shape that decreases toward the bottom portion.
[0004]
Moreover, there exists a rainwater storage apparatus as described in Unexamined-Japanese-Patent No. 2000-160606 as an apparatus which stores rainwater. In the technology described in this publication, a synthetic resin filling body having a plurality of support columns is arranged vertically and horizontally in a water tank formed by digging the ground, and is stacked and filled vertically, and a covering means is provided thereon. A rainwater storage device that has been formed and has a groove for discharging solid content on the bottom surface of a water storage tank, and has at least a plurality of water spray holes between columns of a synthetic resin filling body or a plurality of exhaust pipes. It is an object of the present invention to provide an easy-to-maintain rainwater storage device that is provided with a diffuser tube having holes and that can easily remove solid content accumulated in a packing.
[0005]
[Problems to be solved by the invention]
By the way, the former storage and penetration facility described above has a mud pool in the inflow section to prevent sand and sludge from flowing into the storage section along with rainwater. Sand and sludge that have passed through the sediment are deposited on the bottom of the reservoir. The storage portion is filled with container-like members arranged vertically and horizontally and vertically, and it is difficult to remove accumulated sand and sludge. For this reason, when the internal volume of the storage part decreases gradually, the amount of rainwater stored decreases, and if the internal volume becomes extremely small, there is a possibility that it will not function as a regulating pond. In that case, it takes time and a large maintenance cost to dig up an existing adjustment pond, clean the stuffing member after removing it, and re-install the stuffing member again. In addition, if necessary, a new storage and infiltration facility will be created, which necessitates new land and hinders effective use of the land.
[0006]
In addition, the latter rainwater storage device described above has a problem in that since a water spray tube and an air diffuser tube are separately provided inside the water storage tank, the configuration is complicated, the device is complicated to manufacture, and the cost is increased. And since a sprinkling pipe and a diffuser pipe are located in a water storage tank, there exists a problem that the porosity of a water storage tank falls and the amount of water storage decreases. Further, when the solid content deposited on the filler is removed by the water spray pipe, it is necessary to empty the water storage tank and inject high-pressure water from the water spray pipe.
[0007]
The present invention has been made in view of such problems. The object of the present invention is to guide and collect sand and sludge flowing in along with rainwater to a predetermined place, and sand and sludge accumulated in this place. Can be sucked out with a vacuum, etc., can be removed by washing, can be removed even if sand accumulates in the storage part after a long period of use, etc. It is to provide a facility for storing and / or infiltrating water.
[0008]
In addition, in a storage and / or infiltration facility for rainwater, etc., a concave portion formed by guiding sand and sludge flowing into the storage portion together with rainwater in a certain direction together with rainwater, and forming sand and sludge at a predetermined position at the bottom of the facility It is an object of the present invention to provide a filling member that is guided and deposited to facilitate removal of accumulated sand and sludge. And when stacking the filling member in the rainwater storage part, the strength of the filling member is large, and the construction work can be carried out stably using the filling member, which can be stably stacked by the installer on the filling member. An object of the present invention is to provide a facility for storing and / or infiltrating rainwater and the like that can be easily performed.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the filling member used in the facility for storing and / or infiltrating rainwater and the like according to the invention of claim 1 is used for the facility for storing and / or infiltrating rainwater and the like, and stores rainwater and the like. A filling member that is continuously and vertically filled in a storage portion that is filled, and the filling member isIt is a plate shape with a substantially square shape in plan view, and the filling members are placed at the four corners.A connecting portion that is stacked vertically;Fixed to the connecting part,An inclined plate portion for guiding rainwater or the like flowing into the storage portion in a predetermined direction,The upper surface of the inclined plate portion is flat,On the bottomIsThe filling member is characterized in that a reinforcing portion is formed. According to this configuration, every time rainwater flows into the reservoir,Along the inclined plateSand or the like is automatically guided in a predetermined direction, and sequentially moves to the lower filling member to exert a self-cleaning action. Therefore, it becomes a maintenance-friendly filling member capable of automatically guiding and depositing sand or the like in a predetermined direction on the bottom surface of the storage portion.
In addition, the inclined plate portion is provided with a reinforcing portion on the lower surface side and the upper surface side is flat, so that the installer can easily be placed on the inclined plate portion, and there is no unnecessary protrusion so that the installation is easy. . In addition, since the inclined plate portion is reinforced, it can be prevented from being deformed with little deformation and work efficiency can be improved.
[0014]
Claim2The filling member according to the invention described in the above,InThrough holeButA protrusion is formed around the upper surface side of the inclined plate portion of the through hole.1It is a filling member of description. The position of the through hole is preferably drilled corresponding to or close to the reinforcing rib on the upper surface side of the space. According to this configuration, the strength of the inclined plate portion can be further improved, and the protrusions formed around the upper surface side of the inclined plate portion of the through hole can prevent sand and the like from falling through the through hole. The gripper's shoes and the like are gripped to prevent slipping, improving workability and improving work efficiency. The protrusion is preferably formed of a spherical surface or a conical surface.
[0015]
ClaimThe filling member according to the invention described in claim 3 is the filling member according to claim 1 or 2, wherein the connecting portion has a triangular pipe cross section, and through holes are formed in a bottom surface and a side surface. . As a result, rainwater can enter from the lower through hole, and the internal air can escape from the side through hole.
[0016]
Claim4The facility for storing and / or infiltrating rainwater or the like according to the invention described inIt is a facility for storing and / or infiltrating rainwater or the like in which the filling member according to any one of claims 1 to 3 is located in the storage portion, and rainwater is guided along the inclined plate portion. It is a facility for storing and / or penetrating rainwater or the like characterized by comprising a recessed portion formed on the bottom surface of the storage portion.
[0017]
According to this configuration,Rainwater containing sand and the like is guided along the inclined plate portion, and the sand and the like which are solid components fall and accumulate in the concave portion on the bottom surface. And when solid content, such as the accumulated sand, becomes large, it can remove as needed and can secure the predetermined storage amount of a storage part, and can improve the durability of a facility.
[0018]
And claims5The facility for storing and / or infiltrating rainwater or the like according to the invention described in5. The rainwater or the like according to claim 4, wherein the filling members are directly stacked on each other at a lower portion of the storage portion, and are stacked on the upper portion of the storage portion with a connection member interposed between the connection portions. And / or infiltration facilities.
[0019]
According to this configuration,Using one type of filling member, the filling member is stacked in a dense state at the lower part of the storage part to improve the strength of the part corresponding to the foundation, and the upper part is stacked in a sparse state, and the porosity of the storage part The cost can be reduced and a large amount of rainwater can be stored.
[0021]
  Claim6The facility for storing and / or infiltrating rainwater or the like according to the invention described inThe connecting member has a bottomed cylindrical shape that fits above and below the connecting portion of the filling member, and has a horizontal joint portion on the outer peripheral surface, and an inclined partition plate inside thereof, and the partition plate Is a facility for storing and / or penetrating rainwater or the like according to claim 5, wherein a through hole is formed.According to this configuration, since the upper portion of the filling member is connected in the horizontal direction at the joint portion, the upper portion of the filling member is prevented from swinging, and is stable when the installer is placed on the inclined plate portion. Therefore, the efficiency of construction work can be increased.In addition, the connecting member is provided with an inclined partition plate for guiding earth and sand to the inclined plate portion inside, and a through hole is formed in this partition plate, so that it is possible to enter rainwater and discharge air It has become.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a facility for storing and / or infiltrating rainwater and the like according to the present invention will be described in detail with reference to the drawings. In the present embodiment, a storage facility that stores rainwater and the like will be described in detail. 1 is a cross-sectional view of a storage facility for rainwater and the like according to the present embodiment, FIG. 2 is a plan view in which the covering member of FIG. 1 is omitted, and FIG. 3 is a cross-sectional view taken along line AA of FIG.
[0023]
1 to 3, a storage facility such as rainwater temporarily stores rainwater when heavy rain falls, and has an outflow suppression effect that prevents a river flow rate from rapidly increasing. And the stored rain water etc. can also be used as watering for planting, water for car washing, water for emergency use, water for fire prevention, and water storage 10 formed by digging down the ground 1, and inside the storage 10 Are arranged side by side in the horizontal direction, and include a large number of filling members 30 that are stacked in the vertical direction, and a covering member 40 that is placed on the top of the filling member 30 and covers the upper portion of the storage portion 10.
[0024]
The storage unit 10 forms the excavation unit 2 by digging the ground 1 into a rectangular shape with a depth of about 1 to 10 m, for example, and the bottom surface is laid and solidified with cracked stone to form the base unit 3. Yes. The bottom surface of the storage unit 10 is basically a flat surface, and a recessed portion 11 is formed in the central portion of the bottom surface in the long side direction. The recessed portion 11 is formed over the entire width in the short side direction of the bottom surface. A waterproof sheet 12 is laid on the bottom surface of the recessed portion 11 and the entire bottom surface of the storage portion 10. As the waterproof sheet 12, a synthetic rubber, a resin sheet or an asphalt sheet having a thickness of 1.5 mm or more is used. A lattice-shaped frame 14 is fitted into the recessed portion 11 on the bottom surface of the storage unit 10, and the entire bottom surface of the storage unit 10 is substantially flat.
[0025]
In addition, you may make it lay the protection board 13 on the base part 3 formed from a split stone etc., and lay the waterproof sheet 12 on it. Further, instead of the protective board 13 described above, a base sheet (not shown) such as a polyester-based non-woven fabric sheet is laid under the waterproof sheet 12 as necessary. You may make it protect. Further, a plurality of recessed portions may be formed according to the size of the storage portion, and rainwater may be guided to the plurality of recessed portions by an inclined plate portion described later of the filling member 30.
[0026]
A large number of filling members 30 are horizontally arranged on the bottom surface of the storage portion 10 that is substantially flat as described above, and are stacked one above the other. In the present embodiment, as shown in FIG. 2, the storage unit 10 has a space for arranging 20 filling members 30 side by side, and 18 units excluding two portions corresponding to both ends of the recessed part 11 are provided. It is lined up in a row. In this state, the filling member 30 is directly stacked to form a small pitch, and the filling member 30 is stacked on top of this to form a large pitch with the connecting member 35 interposed therebetween. The filling member 30 fills the reservoir 10. In addition to securing a storage space for rainwater and the like, the upper covering member 40 is supported.
[0027]
Square manholes 15 and 16 communicating with the recessed portion 11 are provided in a space penetrating in the vertical direction through the storage portion 10 from which the two filling members are removed. And the rainwater induced | guided | derived by the inclination board part of the filling member 30 is the structure guided to the recessed part 11 with sand etc., and falls. Further, the square manholes 15 and 16 are used as spaces through which a vacuum pipe and a pipe for injecting cleaning water are passed when deposits such as sand accumulated in the concave portion 11 are removed.
[0028]
As shown in detail in FIGS. 4 to 6, the filling member 30 is made of a plastic such as polyethylene, polypropylene, vinyl chloride, or polyethylene terephthalate, or a waste plastic thereof, and covers the upper portion of the reservoir 10. Four columnar connecting portions 31 that support vertical load and horizontal load due to water pressure and secure the space of the storage portion 10, and are fixed to the four connecting portions 31 and inclined at an angle of about 5 degrees with respect to the horizontal plane. And an inclined plate portion 32.
[0029]
The inclined plate portion 32 is formed of a thick plate material having a thickness of about 4 to 5 mm, and constitutes guiding means for guiding the flowing rainwater or the like in a predetermined direction. The inclination direction S of the inclined plate part 32 is a direction in which the tip of the arrow is low, and when the inclination angle is gentle, sand or the like stays without flowing along with rainwater, so an inclination angle of about 5 degrees is preferable. The size of the filling member 30 is composed of, for example, a square inclined plate portion 32 having a side of about 50 cm to 1 m and connecting portions 31 extending vertically at the four corners of the inclined plate portion. It is formed of a triangular prism of about 15 cm, and has a shape that fits in a rectangular parallelepiped having a side of about 50 cm to 1 m and a height of about 10 to 15 cm.
[0030]
Note that the size of the filling member 30 may be about 30 cm on one side or 1 m or more on one side. In addition, although the inclined plate portion 32 of the filling member 30 is shown as an example in which a flat plate is inclined, the inclined plate portion 32 may be a curved surface that is gently recessed along the inclination direction instead of a flat plate, or may be gently convexly bulged. May be a stepped inclined surface with a continuous slope. Furthermore, you may comprise the inclined surface which changes on the way from a steep slope to a gentle slope.
[0031]
The connecting portion 31 is formed of a thick plate material having a thickness of about 4 to 5 mm, and below the large cross-section triangular pipe-shaped upper column portion 31a is a small cross-sectional triangle that fits inside the upper column portion 31a. A pipe-like lower column part 31b is formed. Therefore, the filling member 30 can be stacked with a small pitch, that is, the height of the connecting portion 31 by fitting the lower pillar portion 31b of the other filling member 30 into the upper pillar portion 31a of the filling member 30. . Through holes 31c and 31d are formed vertically on the bottom and side surfaces of the triangular pipe-shaped connecting portion 31, rainwater can enter from the lower through holes, and internal air can escape from the side through holes. it can. In addition, although the corner part is notched, the lower pillar part 31b may be continuous. Further, it is preferable that the bottom surface in the connecting portion 31 is inclined in the direction of the through hole on the side surface in order to guide earth and sand to the inclined plate portion 32.
[0032]
A reinforcing portion is formed on the lower surface of the inclined plate portion 32, and the upper surface is a flat and gentle inclined surface. As the reinforcing portion, lattice-like reinforcing ribs 33 are formed so as to be integrally erected vertically and horizontally at a predetermined interval. The reinforcing ribs 33 are formed so that the vertical width of the central portion of the inclined plate portion 32 is large and the vertical width gradually decreases toward the periphery. With this configuration, even when a load is applied to the upper surface of the inclined plate portion 32, the deformation of the inclined plate portion 32 is reduced, and it is possible to prevent damage such as cracks from occurring even if the installer is placed on the upper surface. The reinforcing ribs do not have to be in a lattice shape, but a lattice shape is preferable because the strength is higher than that in one direction, and a hexagonal honeycomb lattice shape is more preferable in terms of strength.
[0033]
The reinforcing rib 33 as the reinforcing portion is formed with a space of a lower opening surrounded by the reinforcing rib, and an open portion 34 communicating with the upper portion of the space is formed. The opening portion 34 is configured such that a part of the reinforcing rib 33 is notched and communicated with the space of the adjacent lower opening. With this configuration, when rainwater gradually accumulates and rises in the storage unit 10 from below, air does not remain in the space of the lower opening, and the air moves from the opening unit 34 to the adjacent space and replaces it. In addition, rainwater can enter the tank, and it is possible to prevent the filling member from being lifted by buoyancy, so that the storage section 10 can be filled with rainwater and a predetermined storage amount can be secured. Instead of the opening 34 where the reinforcing rib 33 is cut out, a hole (not shown) penetrating the upper portion of the reinforcing rib 33 in the horizontal direction may be formed and communicated.
[0034]
The filling members 30 can be stacked at a large pitch by stacking the connecting members 35 on top of the connecting portions 31. The connecting member 35 connects the triangular pipe-shaped connecting portions 31, and as shown in FIG. 7, the upper large triangular pipe-shaped connecting portion 36 externally fits the lower column portion 31 b of the filling member 30 and the lower small portion The substantially triangular pipe-shaped connecting portion 37 is configured to be fitted into the upper column portion 31 a of the filling member 30. By adjusting the height of the connecting member 35, the pitch at which the filling members 30 are stacked can be arbitrarily set. Although not shown, two kinds of filling members, that is, a filling member having a large connecting portion and a small filling member may be prepared and stacked at a small pitch or a large pitch. The connecting portion 37 is partially cut out, but may be continuous.
[0035]
The connecting member 35 includes a horizontal joint 38 on the outer perpendicular surface. One of the vertical surfaces is formed with a protruding projection 38a, and the other vertical surface is formed with a bonding hole 38b into which the bonding projection 38a is fitted. The joint convex portion 38a is composed of a base small-diameter portion having substantially the same diameter as the joint hole and a large-diameter portion whose top end is inclined, and a slit is formed between the small-diameter portion and the large-diameter portion. The large diameter portion can be curved inward to reduce the diameter. With this configuration, the joint convex portion 38a is fitted and held in the joint hole 38b, and the connecting members 35 can be joined in the horizontal direction. The connecting member 35 includes an inclined partition plate for guiding earth and sand to the inclined plate portion 32. A through hole 39 is formed at a lower position of the partition plate, and rainwater can enter and discharge air. ing.
[0036]
As shown in FIG. 8A and FIG. 9A, the connecting member 35 can join the two connecting members 35 by fitting the joint convex portion 38a of the joint portion 38 into the joint hole 38b. it can. The two connecting members joined in this way are used when the filling member 30 is located on the outer peripheral side of the storage unit 10. Further, as shown in FIGS. 8B and 9B, the four connecting members 35 can be joined by fitting the joint convex portions 38a of the joint portion 38 into the joint holes 38b. In this case, it is used when the filling member 30 is located on the center side of the storage unit 10. In addition, what protrudes in the joint convex part 38a which is not used may be cut | disconnected with a blade etc., and may be made flat. Moreover, when joining the filling member 30 which opposes the corner | angular part of the square manholes 15 and 16, although not shown in figure, three connection members are joined and used.
[0037]
In the present embodiment, the four filling members 30 in the vertical line at the left end in FIG. 2 are guided so that the inclined direction S1 for guiding rainwater is directed to the right, that is, toward the concave portion 11 at the center of the reservoir. The four filling members 30 in the vertical row at the right end are also arranged so that the inclination direction S1 is directed to the left and directed toward the concave portion 11 at the center of the storage portion. The four filling members 30 in the second vertical line from the left end are arranged so that the inclination direction S is downward S3, rightward S1, upward S4, upward S3 in order from the top, and the second vertical line from the right end. The four filling members 30 are arranged so that the inclination direction S is downward S3, leftward S1, leftward S1, and upward S3 in order from the top. The center upper filling member 30 is disposed such that the inclination direction S is downward S2 in the figure, and the center lower filling member 30 is disposed leftward S3.
[0038]
The inclination direction is determined as follows. First, the inclination direction S1 of the filling member is directed to the recessed portion 11. Secondly, the filling member located in the upper part of the recessed portion is directed to the outflow side as in the inclined direction S2. Thirdly, in the manhole part which is a communication path, the rainwater escapes in a different direction as in the inclined direction S3 so as not to stop. And it is set as the inclination direction S4 so that the inclination direction of the adjacent filling member may not face 4th. As a result, the manhole portion on the outflow side is configured such that a swirl flow S5 in which a part of rainwater swirls clockwise is generated and gradually falls from the gap of the inclined plate portion. Note that the swirl flow may be counterclockwise from the center to the right by setting the tilt direction S3 to the right and the tilt direction S4 of the right filling member to the upward.
[0039]
For this reason, the rainwater is guided toward the concave portion 11 at the center by the filling member 30 and is also guided by gradually falling toward the concave portion 11. In such a guiding direction, the filling members 30 are stacked in seven stages at a small pitch and then in four stages at a large pitch. In addition, when it piles up with a small pitch, the inclination board part 32 continues with the inclination board part 32 of the induction | guidance | derivation direction of a lower stage side by a slight level | step difference, and can guide rain water continuously.
[0040]
In this way, 18 filling members 30 arranged in a row and stacked in 11 steps have a lower strength corresponding to the lower half of the foundation stacked at a small pitch, and the upper half has a larger pitch. The rate is increasing. Moreover, although it becomes unstable if the filling member 30 is piled up highly, since the upper filling member 30 is joined in the horizontal direction at the joint portion 38 of the connecting member 35, the construction is stable and the construction becomes easy. Furthermore, since the stacked state of the filling member 30 is stable, the upper covering member 40 can be stably supported, and the durability of the facility for storing and / or infiltrating rainwater and the like can be improved.
[0041]
The filling member 30 is required to have a high porosity per unit volume, to have practically sufficient strength and durability, and to be easy to carry and maintain and easy to maintain. The load resistance is preferably 5 to 20 tons per square meter in the vertical direction, 5 to 16 tons in the horizontal direction, and the porosity is preferably about 90%. Further, as described above, it is preferable to increase the porosity by providing slits or through holes in the connecting portion 31 so that rainwater or the like can enter inside.
[0042]
After the filling member 30 is vertically stacked and installed in 11 steps, a wall member 20 is installed to cover the side surface of the filling member 30, and a waterproof sheet 21 is arranged in the vertical direction on the outer side. A backfill material 22 such as crushed stone is filled between the excavation part 2. The wall material 20 prevents the waterproof sheet 21 located on the outside from entering the space of the storage unit 10. The waterproof sheet 21 uses a synthetic rubber or resin-based sheet equivalent to that laid on the bottom surface of the storage unit 10 and is joined to the waterproof sheet 12 on the bottom surface with a fusion or waterproof adhesive so as not to leak. Yes. In order to protect the waterproof sheet 21 from the backfill material 22 such as gravel, a protective plate 23 equivalent to the wall material 20 may be disposed outside the waterproof sheet 21.
[0043]
In the case where the infiltration facility is used instead of the storage facility, for example, a water permeable sheet in which polyester and polypropylene are bonded together is laid instead of the waterproof sheets 12 and 21. In the case of an infiltration type facility, rainwater or the like accumulated in the storage part is gradually infiltrated into the ground. Moreover, when giving both the function of storage and permeation | transmission, the bottom face is made into the waterproof sheet 12, the waterproof sheet 21 is laid in the middle of the side surface, and the upper part is covered with the water-permeable sheet from the middle of the side surface. In the case of this storage and penetration type facility, rainwater and the like are gradually infiltrated into the ground from the upper half of the water-permeable sheet, and the lower half is stored and used.
[0044]
The reservoir 10 is connected to a water conduit 25 from a side groove or the like that collects rainwater or the like that has fallen in the vicinity. A mud reservoir 26 is installed in the middle of the water conduit 25, so that sand and mud in rainwater are precipitated, and the supernatant water is introduced into the reservoir 10 by the water conduit 25. A plurality of water conduits 25 extend from the mud reservoir 26 and pass through the wall member 20 and the waterproof sheet 21 of the storage unit 10 and are inserted at equal intervals. In addition, you may comprise the some water conduit 25 so that rain water may be flowed into the back of the storage part 10 by changing the length. Thereby, rainwater etc. can be uniformly introduced along the long side direction of the storage part 10.
[0045]
An overflow pipe 27 protrudes from the upper part of the storage part 10, and an orifice pipe 28 protrudes from the lower part of the storage part 10. The overflow pipe 27 is discharged from the upper part when the storage part 10 is almost full. The orifice pipe 28 gradually drains the rainwater stored in the storage unit 10, and the amount of the outflow can be adjusted by adjusting the diameter of the orifice. When rainwater collected in the storage unit 10 is used, the rainwater in the storage unit 10 can be pumped up and used as water for planting or as water for car washing.
[0046]
A covering member 40 covers the upper opening of the reservoir 10. The covering member 40 includes a covering board 41 placed on top of many filling members 30, a waterproof sheet 42 laid thereon, and a backfill layer 43 backfilled thereon. Although not shown, it is preferable that the covering board 41 has a recess into which the upper connecting portion of the filling member 30 is fitted, so that the covering board 41 can be stably placed on the filling member. The communication port 17 is fixed at a position corresponding to the square manholes 15 and 16 of the covering board 41. The waterproof sheet 42 is joined to the communication port 17, and the waterproof sheet 42 and the side waterproof sheet 21 are overlapped and joined at the side. As a result, the recessed portion 11 opens to the ground through the rectangular manholes 15 and 16 and the communication port 17, and a hose such as cleaning water or vacuum is inserted from the communication port 17 to reach the recessed portion 11 to the tip of the hose. Can be made. The communication port 17 is normally closed by a lid (not shown). A protective board 44 or a protective sheet may be laid on the waterproof sheet 42.
[0047]
In this way, the storage unit 10 can store rainwater and the like by the waterproof sheet 12 on the bottom surface and the waterproof sheet 21 on the side surface, and by the waterproof sheets 12 and 21 and the waterproof sheet 42 of the covering member 40 on the upper surface. An internal space is constructed. Then, the backfill layer 43 of the covering member 40 is backfilled in the same plane as the ground 1. In addition, the waterproof sheet 42 on the upper part of the storage unit 10 is formed of a water permeable sheet, and rainwater that has fallen on the upper part of the storage unit 10 is stored directly in the storage unit 10 through the backfill layer 43, the water permeable sheet, and the covering board 41. May be. Further, the covering member is not limited to the above-described configuration, and may be a configuration in which a concrete plate or the like is simply arranged above the filling member.
[0048]
The stacking operation of the filling members of the facility for storing and / or infiltrating rainwater and the like of the present embodiment configured as described above will be described below. The excavation part 2 is formed by digging down the ground 1, and the base part 3 is formed on the bottom surface of the excavation part 2. A concave portion 11 is formed in the center of the base portion 3 in the long side direction over the entire width in the short direction.
[0049]
After the waterproof sheet 12 is laid on the bottom surface of the storage unit 10 and the frame 14 is fitted, the filling member 30 is arranged on the bottom surface of the storage unit 10. Alternatively, a base board having a large number of through-holes may be laid at the bottom and the filling member 30 may be stacked thereon. Eighteen filling members 30 are arranged at the lowermost stage of the storage unit 10 so that the inclined plate part 32 faces a predetermined direction, and the second-stage filling member 30 is stacked thereon. The second-stage filling member 30 is directly connected to the upper column part 31a of the connection part 31 of the first-stage filling member 30 by internally fitting the lower column part 31b of the second-stage filling member 30 with a small pitch. Stacked. The second-stage filling member 30 is also stacked so that the inclined plate portion 32 faces in a predetermined direction.
[0050]
In the filling member 30, the connecting portions 31 protrude from the four corners of the square inclined plate portion 32, and the inclined plate portion 32 is formed with reinforcing ribs 33 on the lower surface side and is flat on the upper surface side. It can be mounted easily and construction is easy because there are no unnecessary protrusions. Further, since the inclined plate portion 32 is reinforced, it can be prevented from being deformed with little deformation and work efficiency can be improved. In this way, the filling members 30 are stacked in the reservoir 10 at a small pitch in this embodiment, that is, the filling members 30 are directly stacked in seven stages.
[0051]
Thereafter, the filling member 30 is stacked on the connecting portion 31 of the filling member 30 with the connecting member 35 interposed therebetween. That is, the lower connecting portions 37 of the four connecting members 35 are fitted into the upper column portions 31 a of the four connecting portions 31 of the one filling member 30, and the filling member 30 is inserted into the connecting portion 36 above the connecting member 35. The lower column part 31b is fitted inside. When the connecting part 31 is located at the corner of the storage part 10, one connecting member 35 is pushed over the upper part of the connecting part 31 and pushed. Moreover, when the two connection parts 31 and 31 are located in a line with the outer periphery of the storage part 10, as shown to Fig.8 (a), the two connection members 35 are joined by the junction part 38, and the two connection parts 31 are connected. , 31 and push over.
[0052]
Furthermore, although the four connecting portions 31 are in contact with each other in the intermediate portion of the storage portion 10, in this case, as shown in FIG. Put on the two connecting parts 31. The filling member 30 in contact with the square manholes 15 and 16 is joined by connecting the three connecting members 35 and placing them on the three connecting portions 31. As a result, since the two to four connecting members 35 are connected in the horizontal direction by fitting the joint protrusions 38a into the joint holes 38b, the upper portions of the filling members 30 stacked in seven stages are shaken and become unstable. Can be prevented.
[0053]
In this way, the seventh-stage filling member 30 and the eighth-stage filling member 30 are connected by the connecting member 35, and the connecting members 35 are related to each other in the horizontal direction by the joint portion 38, so that they can be arranged neatly. The vertical strength of 30 can be improved. Similarly, the stacking operation of the filling member 30 is completed by stacking three stages with the connecting member 35 sandwiched from the ninth stage to the eleventh stage. When the filling member 30 is stacked and the surface on which the installer is placed becomes higher from the bottom surface, the filling member 30 is shaken and difficult to perform. However, since the upper filling member 30 is connected in the horizontal direction by the connecting member 35, the filling member 30 is horizontal. The swaying of the direction can be prevented, and the construction worker can work stably, so that the work efficiency is improved and the construction becomes easy. The filling member 30 is stacked at a lower pitch at a lower pitch to improve the strength, and the upper portion is stacked at a higher pitch to improve the porosity.
[0054]
It rains around this storage facility, rainwater is collected by a gutter etc. and flows into the mud reservoir 26, where the mud is settled and the supernatant water is introduced into the storage unit 10 from the water conduit 25. When rainwater is introduced into the reservoir 10, rainwater, sand, small gravel and the like are guided toward the center by the inclined plate portion 32 by the large pitch filling member 30, and the sand dropped from the upper filling member 30. Is guided to the center by the lower filling member 30, and rainwater including sand and the like is guided in the direction of the recessed portion 11 and falls. And solid content, such as sand, settles in the hollow 11. Therefore, sand and sludge do not accumulate over the entire bottom surface of the storage unit 10, and sand and sludge concentrate and accumulate in the recessed portion 11 induced by the inclined plate portion 32. In addition, when rainwater flows in, sand or the like is automatically guided in a predetermined direction and self-cleaned, so that an operation such as washing for removing the solid content from the filling member is not required.
[0055]
When rainwater gradually rises and reaches the reinforcing ribs 33 of the filling member 30, the air in the space of the lower opening surrounded by the reinforcing ribs 33 is pushed by the rainwater surface, and the air escapes from the opening 34, and rainwater enters the space. Will be charged. Then, rainwater enters and fills the next space surrounded by the reinforcing ribs 33, and the rainwater can be gradually filled into the space that opens downward in this manner. It can be stored efficiently.
[0056]
The amount of sand and sludge contained in the rainwater is small, but when the storage facility is used for a long period of time, the amount of sand will gradually accumulate and increase. In addition, when the rain is heavy, the amount of sand and the like flowing through the mud pool 26 increases. Deposits such as sand deposited in the recess 11 in this way can be visually determined from the communication port 17 that opens to the ground, and when the amount reaches a certain level, for example, a vacuum pipe is formed from the communication port 17. Is inserted into the square manholes 15 and 16, and sediments such as sand are sucked out and removed. Moreover, deposits can be efficiently removed by jetting high-pressure washing water from one square manhole 15 and sucking it out from the other square manhole 16. For this reason, it can prevent that sand etc. accumulate in the storage part 10, an internal volume reduces, and the storage amount of rainwater decreases.
[0057]
When the amount of rainfall is large and a large amount of rainwater or the like flows from the conduit 25 and the reservoir 10 becomes full, the rainwater flows out of the overflow pipe 27 at the top of the reservoir and is drained to a sewer pipe (not shown). When the stored water stored in the storage unit 10 is used for watering or the like, rainwater in the storage unit can be pumped up and used. Further, a water intake basin may be provided in the middle of the orifice pipe 28, and the stored water may be taken from the water intake.
[0058]
Next, another embodiment of the filling member of the present invention will be described in detail with reference to FIG. FIG. 10 is a perspective view of another embodiment of a filling member used in a facility for storing and / or infiltrating rainwater or the like according to the present invention, and a cross-sectional view of the main part. This embodiment is characterized in that the number of reinforcing ribs constituting the reinforcing portion and the opening portion communicating with the upper portion of the space of the lower opening constituted by the reinforcing rib are different from the above-described embodiment. . Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.
[0059]
In FIG. 10, the filling member 30 </ b> A has four reinforcing ribs 51 formed along the inclination direction of the inclined plate portion 32, and three reinforcing ribs 52 in a direction perpendicular to the reinforcing ribs. And the protrusion 53 comprised by a part of protrusion spherical surface is formed in the part which both reinforcement ribs cross | intersect, and the cylindrical through-hole 54 is formed as an open part toward the downward direction from the vertex of a protrusion. The through hole 54 communicates with the space of the lower opening formed by the reinforcing ribs 51 and 52. That is, the diameter d of the cylindrical through-hole 54 is formed larger than the thickness t of the reinforcing ribs 51 and 52, and the through-hole 54 is configured to communicate with the space.
[0060]
In this embodiment, when rainwater flows along the inclined plate portion 32, the rainwater flows around the protruding projection 53 as shown by the arrow 55 and does not flow into the through hole 54. Therefore, sand contained in the rainwater, etc. Does not fall from the through hole 54, and sand and the like are guided along the inclined plate portion 32 in a predetermined direction together with rainwater. Even if rainwater gradually rises from the bottom surface of the storage portion 10 and closes the space of the lower opening formed by the reinforcing ribs 51 and 52, the air in the space escapes from the through hole 54 to the upper portion of the inclined plate portion 32, It can be filled with rainwater without reducing the amount of rainwater stored. In addition, even if the installer is placed on the inclined plate portion 32 at the time of construction, since the protrusion 53 is formed on the inclined flat surface, the shoe or the like does not slip and can be constructed in a stable state. The fall of the person can be prevented.
[0061]
In this embodiment, since the free end sides of the reinforcing ribs 51 and 52 are not divided at the open portion and are continuous in the longitudinal direction, a predetermined strength can be obtained even if the number of reinforcing ribs is reduced. In addition, since the through hole 54 is formed as an open portion at the intersection of the reinforcing ribs, two adjacent spaces can be opened simultaneously, and the number of open portions can be reduced. The through hole 54 is not limited to being formed at the intersection of the reinforcing ribs 51 and 52, and may be formed close to the middle of the reinforcing rib 52 in the lateral direction as shown in FIG. In this case, one through hole 54 is required for one space.
[0062]
Next, another embodiment of the reservoir will be described with reference to FIG. This embodiment is characterized in that the configuration of the storage portion and the arrangement of the filling member are different from those of the above-described embodiment, and the same reference numerals are given to configurations substantially equivalent to the above-described configuration. Detailed description is omitted. FIG. 12 is a schematic view corresponding to the plan view of FIG. 2. In FIG. 12, the storage portion 10A has a space in which 25 filling members can be arranged in a row, and outside this space. Two communication paths 15A and 16A are provided. These communication passages open to the ground although not shown. A U-shaped groove 11 </ b> A is formed as a recessed portion on the bottom surface of the storage portion so as to connect the two communication paths.
[0063]
In this example, the filling members 30 are arranged vertically and horizontally in 5 × 5 and stacked in the vertical direction. The five vertical filling members at the left end are arranged so that the inclination direction S faces the right side, and the upper four of the five filling members in the second row from the left end face the right side, and the lower one is the upper side. It is arranged to face. Further, the five vertical filling members at the right end are arranged so that the inclination direction S faces the left side, and the five vertical filling members second from the right end are also arranged toward the left side. Then, the four filling members from the top on the center are arranged so that the inclination direction S faces downward, and the one filling member on the lower side of the center is arranged on the left side. The plate portion leads to the U-shaped groove 11A.
[0064]
The direction of the inclination direction S of each filling member 30 is determined as follows. That is, the inclination direction S1 is first directed to the U-shaped groove 11A that is a recessed portion. Next, in the upper part of the U-shaped groove 11A, it is directed to the outflow side (lower communication path 16A) as in the inclined direction S2. Finally, in the vicinity of the communication path, the slope direction S3 is set so that rainwater escapes laterally so as not to reach a dead end, and the slope direction S4 is set so that adjacent slope directions do not face each other.
[0065]
According to this configuration, when rainwater flows into the reservoir 10A, the rainwater is guided in the inclined direction S1 from the outer filling member 30 toward the inner filling member 30, and is lowered in the inclination direction S2 by the central filling member 30. In the lower part of the center, it is guided leftward in the direction of inclination S3 and further upward in the direction of inclination S4. As shown by the arrow S5, the rainwater produces a swirling flow. It gradually falls from the gap between the filling members 30. In this way, sand or the like which is solid content flowing together with rain water gradually falls from the gap between the filling members to the lower filling member, is gradually guided in the U-shaped groove direction, and is accumulated in the U-shaped groove 11A.
[0066]
In this way, the solid content such as sand accumulated in the U-shaped groove 11A can be seen from the communication passages 15A and 16A. When the accumulation amount increases, cleaning water can be injected from one communication passage 15A, and a vacuum tube can be inserted from the other communication passage 16A to suck out solid content. Therefore, a predetermined storage amount can be stored in the storage portion 10A. It is possible to secure the durability of the storage facility and the like. Even in this storage facility, since solids such as sand are automatically purified by rainwater and guided to the recessed part, operations such as washing to remove the solids are unnecessary.
[0067]
In the above-described embodiment, the example of the rectangular manholes 15 and 16 is shown as the communication path that opens to the ground continuously with the recessed portion 11, but the recessed portion remains as a space where no filling member is disposed. You may comprise so that it may communicate with. Moreover, you may make it spread | lay the mesh board | plate material which can let water and sand pass instead of the grid | lattice-like frame material which covers a concave part and is made flat. Furthermore, although the example which arrange | positions only one mud reservoir 26 in the vicinity of the storage part 10 was shown, a plurality of mud reservoirs are provided around the storage part so that rainwater or the like flows from the plurality of mud reservoirs into the storage part. You may comprise.
[0068]
Although two rectangular manholes penetrating vertically are provided inside the storage portion as the communication path, a single square manhole may be provided inside the storage portion as the communication path. The filling member has been shown in an example in which seven stages are stacked at a small pitch, and four stages are stacked at a large pitch, for a total of 11 stages. However, the number of stages is not limited to this number of courses. It can be the number of stages.
[0069]
【The invention's effect】
  As can be understood from the above description, according to the filling member according to claim 1, solids such as rainwater and sand areInclined plateAre automatically guided in a predetermined direction by the action of gravity, and sequentially move to the lower filling member to self-clean the guiding means. And since sand etc. can be deposited in a predetermined direction, the facility which stores and / or penetrates rainwater etc. with easy maintenance can be achieved.
In addition, the inclined plate portion is provided with a reinforcing portion on the lower surface side and the upper surface side is flat, so that the installer can easily be placed on the inclined plate portion, and there is no unnecessary protrusion so that the installation is easy. . In addition, since the inclined plate portion is reinforced, it can be prevented from being deformed with little deformation and work efficiency can be improved.
[0071]
The filling member according to claim 2 is characterized in that a through hole is formed in the inclined plate portion, and a protrusion is formed around the upper surface of the inclined plate portion of the through hole. 1. The filling member according to 1. According to this configuration, the protrusion formed around the upper surface side of the inclined plate portion of the through hole can prevent sand and the like from falling through the through hole, and the protrusion slides to grip the shoe of the builder, etc. Is prevented, workability is good, and work efficiency is improved.
The filling member according to a third aspect of the present invention is the filling member according to the first or second aspect, wherein the connecting portion has a triangular pipe cross section, and through holes are formed in the bottom surface and the side surface. It is. As a result, rainwater can enter from the lower through hole, and the internal air can escape from the side through hole.
[0072]
Claim4The facility for storing and / or infiltrating rainwater or the like according to the invention described inIt is a facility for storing and / or infiltrating rainwater or the like in which the filling member according to any one of claims 1 to 3 is located in the storage portion, and rainwater is guided along the inclined plate portion. It is a facility for storing and / or penetrating rainwater or the like characterized by comprising a recessed portion formed on the bottom surface of the storage portion.
According to this configuration, rainwater containing sand or the like is guided along the inclined plate portion, and sand or the like that is a solid content falls and accumulates in the recessed portion on the bottom surface. And when solid content, such as the accumulated sand, becomes large, it can remove as needed and can secure the predetermined storage amount of a storage part, and can improve the durability of a facility.
Furthermore, in the facility for storing and / or infiltrating rainwater and the like according to the invention described in claim 5, the connecting members are directly stacked at the lower part of the storage part, and the connection parts are stacked at the upper part of the storage part. The facility for storing and / or infiltrating rainwater and the like according to claim 4, wherein the parts are stacked with a connecting member interposed therebetween.
According to this configuration, using one type of filling member, the filling member is stacked in a dense state at the lower part of the reservoir, and the strength corresponding to the foundation is improved, and the upper part is stacked in a sparse state. The porosity of the storage part can be increased, the cost can be reduced, and a large amount of rainwater can be stored.
[0073]
  Claim6The facility for storing and / or infiltrating rainwater or the like according to the invention described inThe connecting member has a bottomed cylindrical shape that fits above and below the connecting portion of the filling member, and has a horizontal joint portion on the outer peripheral surface, and an inclined partition plate inside thereof, and the partition plate Is a facility for storing and / or penetrating rainwater or the like according to claim 5, wherein a through hole is formed. According to this configuration, since the upper portion of the filling member is connected in the horizontal direction at the joint portion, the upper portion of the filling member is prevented from swinging, and is stable when the installer is placed on the inclined plate portion. Therefore, the efficiency of construction work can be increased. In addition, the connecting member is provided with an inclined partition plate for guiding earth and sand to the inclined plate portion inside, and a through hole is formed in this partition plate, so that it is possible to enter rainwater and discharge air It has become.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an embodiment of a facility for storing and / or infiltrating rainwater and the like according to the present invention.
FIG. 2 is a plan view in which the covering member of FIG. 1 is omitted.
3 is a cross-sectional view taken along line AA in FIG.
4 is a top perspective view of a filling member used in the facility of FIG.
FIG. 5 is a perspective view below a filling member used in the facility of FIG.
6A is a cross-sectional view taken along line BB in FIG. 4, and FIG. 6B is a cross-sectional view taken along line CC in FIG.
7 shows a connecting member used in the facility of FIG. 1, (a) is an upper perspective view, and (b) is a lower perspective view. FIG.
8A is a perspective view of a state where two connecting members of FIG. 7 are assembled, and FIG. 8B is a perspective view of a state where four connecting members are assembled.
9A is a plan view of a state where two connecting members of FIG. 7 are assembled, and FIG. 9B is a plan view of a state where four connecting members are assembled.
10A and 10B show another embodiment of the filling member, in which FIG. 10A is a perspective view, and FIG. 10B is a cross-sectional view of main parts taken along line DD of FIG.
FIG. 11 is a cross-sectional view of a main part of still another embodiment of the filling member.
FIG. 12 is a schematic diagram showing a schematic configuration of another embodiment of the storage unit.
[Explanation of symbols]
1 ground, 2 excavation part,
3 foundation part, 10,10A storage part,
11 concave part, 11A U-shaped groove (concave part),
12 tarpaulins, 14 frames,
15, 15A, 16, 16A Square manhole (communication path),
17 Communication port,
20 wall material, 21 tarpaulin,
30, 30A filling member,
31 connecting part,
32 Inclined plate part (guidance means),
33 Reinforcement rib (reinforcement part),
34 Opening part,
35 connecting members, 38 joints,
38a joint convex part, 38b joint hole,
40 covering member, 41 covering board,
42 tarpaulin, 43 backfill layer,
51,52 Reinforcement rib (reinforcement part),
53 protrusions, 54 through holes (open parts),
S, S1-S4 Inclination direction (guidance direction)
S5 Swirl

Claims

A filling member that is used in a facility for storing and / or infiltrating rainwater, etc., and is continuously and vertically filled in a storage section for storing rainwater and the like,
The filling member has a substantially square plate shape in plan view, and has a connecting portion for stacking the filling members in the vertical direction at four corners, and an inclination that is fixed to the connecting portion and guides rainwater and the like flowing into the storage portion in a predetermined direction. and a plate portion, with the inclined plate portion upper surface is flat, the filling member, characterized in that the formation of the reinforcing portion in the lower surface.

Wherein the inclined plate portion through hole is formed, the filling member of claim 1 in which characterized in that the periphery of the inclined plate portion upper surface side of the through hole is projections formed.

The filling member according to claim 1 or 2, wherein the connecting portion has a triangular pipe shape in cross section, and through holes are formed in a bottom surface and a side surface.

A facility for storing and / or infiltrating rainwater or the like in which the filling member according to any one of claims 1 to 3 is positioned in the storage unit,
A facility for storing and / or infiltrating rainwater or the like, comprising a recessed portion formed on a bottom surface of the storage portion from which rainwater is guided along the inclined plate portion.

5. The rainwater or the like according to claim 4, wherein the filling members are directly stacked on each other at a lower portion of the storage portion, and are stacked on the upper portion of the storage portion with a connection member interposed between the connection portions. And / or infiltration facilities.

The connecting member has a bottomed cylindrical shape that fits above and below the connecting portion of the filling member, and has a horizontal joint portion on the outer peripheral surface, and an inclined partition plate inside thereof, and the partition plate The facility for storing and / or penetrating rainwater or the like according to claim 5, wherein a through hole is formed .