檢查(cha)井(jing)是(shi)用(yong)在(zai)建筑小區(qu)（居住區(qu)、公共(gong)建筑區(qu)、廠(chang)區(qu)等(deng)）范圍內埋(mai)地(di)塑(su)料排水管(guan)道外徑不大(da)于800mm、埋(mai)設(she)深(shen)度(du)不大(da)于6m，一般設(she)在(zai)排水管(guan)道交匯處(chu)、轉彎處(chu)、管(guan)徑或(huo)坡度(du)改變處(chu)、跌水處(chu)等(deng)，為了便于定期檢查(cha)、清潔和疏通或(huo)下井(jing)操作檢查(cha)用(yong)的(de)塑(su)料一體注塑(su)而(er)成(cheng)或(huo)者磚砌成(cheng)的(de)井(jing)狀構筑物。

　　塑(su)料一(yi)(yi)體注塑(su)檢查井(jing)(jing)(jing)(jing)(jing)是指構(gou)成檢查井(jing)(jing)(jing)(jing)(jing)的主要井(jing)(jing)(jing)(jing)(jing)座(zuo)(zuo)(zuo)部分采(cai)(cai)用一(yi)(yi)次(ci)性(xing)注塑(su)成型(xing)(xing)，井(jing)(jing)(jing)(jing)(jing)筒(tong)插口(kou)采(cai)(cai)用360度環(huan)型(xing)(xing)承載平臺，井(jing)(jing)(jing)(jing)(jing)身及井(jing)(jing)(jing)(jing)(jing)座(zuo)(zuo)(zuo)底部采(cai)(cai)用網狀加(jia)強(qiang)筋，各(ge)承插口(kou)采(cai)(cai)用環(huan)型(xing)(xing)加(jia)強(qiang)筋設計(ji)。根據接管數和(he)角度不同(tong)有起(qi)始井(jing)(jing)(jing)(jing)(jing)座(zuo)(zuo)(zuo)、直通(tong)(tong)(tong)井(jing)(jing)(jing)(jing)(jing)座(zuo)(zuo)(zuo)、45度彎頭(tou)井(jing)(jing)(jing)(jing)(jing)座(zuo)(zuo)(zuo)、三通(tong)(tong)(tong)井(jing)(jing)(jing)(jing)(jing)座(zuo)(zuo)(zuo)、四(si)通(tong)(tong)(tong)井(jing)(jing)(jing)(jing)(jing)座(zuo)(zuo)(zuo)等。為(wei)了適(shi)應各(ge)種排水狀況，塑(su)料檢查井(jing)(jing)(jing)(jing)(jing)同(tong)時(shi)配套有變徑(jing)接頭(tou)、匯流接頭(tou)、井(jing)(jing)(jing)(jing)(jing)筒(tong)多接頭(tou)等與之配套的塑(su)料一(yi)(yi)體注塑(su)成型(xing)(xing)配件。以保障整個排水系統的流暢和(he)密封性(xing)。

　　混凝土檢查井的(de)適用范圍：

　　1）建(jian)筑小區(qu)(qu)（居住區(qu)(qu)、公共(gong)建(jian)筑區(qu)(qu)、廠區(qu)(qu)等）、城(cheng)鄉市(shi)政、工(gong)業園區(qu)(qu)、舊(jiu)城(cheng)改造等范(fan)圍(wei)內埋地(di)(di)(di)排(pai)水管道外徑不(bu)(bu)大(da)于(yu)1200mm、埋設(she)(she)深度(du)不(bu)(bu)大(da)于(yu)8m的(de)(de)(de)塑料排(pai)水檢(jian)(jian)查(cha)井(jing)工(gong)程的(de)(de)(de)設(she)(she)計、施(shi)工(gong)和維護保養。2）一般土(tu)(tu)質、軟土(tu)(tu)土(tu)(tu)質、季節性凍土(tu)(tu)土(tu)(tu)質和濕陷性黃土(tu)(tu)土(tu)(tu)質條件下的(de)(de)(de)塑料排(pai)水檢(jian)(jian)查(cha)井(jing)施(shi)工(gong)；3）抗震設(she)(she)防(fang)裂度(du)為9度(du)及9度(du)以下的(de)(de)(de)地(di)(di)(di)區(qu)(qu)。4）一般車(che)(che)道的(de)(de)(de)地(di)(di)(di)面(mian)荷載按汽車(che)(che)總重15t（后輪壓5t）；消防(fang)車(che)(che)道的(de)(de)(de)地(di)(di)(di)面(mian)荷載按汽車(che)(che)總重30t（后輪壓6t）設(she)(she)計。5）地(di)(di)(di)下水位按地(di)(di)(di)面(mian)下不(bu)(bu)高(gao)于(yu)1.0m設(she)(she)計；