< Topic >That you called the greenbelt of the park and the auto park and the factory, it is expected, treading stress and the vehicle load catch, while excluding the time of the affusion markedly, in the place where at the same time the everyday affusion is difficult, it offers the plantation infrastructure for greening which extending to long term, maintains the growth environment of plantation satisfactorily.SolutionsFrom the base of the underground depot 1 which stores the rainwater putting on plantation soil, 2 pumping cylinder 3 is installed, from the underground depot regular storage water 8 pumping to the soil with the capillarity tube phenomenon of this pumping cylinder, holds down drying the soil. Here, as for the underground depot we designate the gravel condition glass foaming body 9 where the withstand load Characteristic which withstands also the vehicle load is high as the main formative, in addition, the grain condition glass foaming body restoration by also the plantation infrastructure, because furthermore the fine grain condition glass foaming body and the earth is restoration in the gap of the grain condition glass foaming body, we show bearing capacity vis-a-vis the load of walking and the vehicle. Depending, the tightening lump of the plantation soil extending to long term, it is suppressed, deterioration of water permeability and permeability of the soil is suppressed.< Choice figure >Drawing 1【課題】公園や駐車場、工場の緑地帯といった、踏圧や車両荷重がかかることが予想され、且つ毎日の灌水が難しい場所において、灌水の手間を格段に省きながら植栽の生育環境を長期に亘って良好に維持する緑化用植栽基盤を提供する。【解決手段】雨水を貯留する地下貯留槽1の底面から植栽土壌2にかけて揚水柱3が設置されており、この揚水柱の毛細管現象により地下貯留槽から土壌へと常時貯留水8が揚水して土壌の乾燥を抑える。ここで、地下貯留槽は車両荷重にも耐えられる耐荷重性の高い礫状ガラス発泡体9を主構成要素としており、また、植栽基盤にも粗粒状ガラス発泡体が充填され、更に粗粒状ガラス発泡体の間隙に細粒状ガラス発泡体と土が充填されているため、歩行や車両の荷重に対して支持力を示す。よって、植栽土壌の締め固まりが長期に亘って抑制され、土壌の透水性や通気性の悪化が抑制される。【選択図】図1
