宜興打水(shui)井(jing) 宜興別墅庭院用水(shui)打井(jing)

235mm開口，219mm擋墻(qiang)(qiang)鋼(gang)管到(dao)基巖(yan)上表(biao)面，基巖(yan)鉆孔(kong)(kong)146mm，裸孔(kong)(kong)到(dao)后(hou)一個孔(kong)(kong)，巖(yan)層沒有安(an)裝鋼(gang)管，深(shen)井深(shen)度和水輸出(chu)結合地下含水層決定鉆井施工本項(xiang)目(mu)計劃采用多用途履帶式DTH鉆床(chuang)進行鉆孔(kong)(kong)，高風(feng)壓(ya)終井洗(xi)終鉆孔(kong)(kong)施工，流程如下：平整(zheng)(zheng)現(xian)場，起重設(she)備→鉆孔(kong)(kong)機到(dao)位(wei)→鉆進到(dao)基巖(yan)→安(an)裝擋土(tu)墻(qiang)(qiang)套管→換鉆頭→正常鉆孔(kong)(kong)→完整(zheng)(zheng)孔(kong)(kong)清洗(xi)井→鉆孔(kong)(kong)端孔(kong)(kong)→完整(zheng)(zheng)鉆孔(kong)(kong)機移位(wei)→抽水

鉆(zhan)(zhan)(zhan)井(jing)(jing)(jing)(jing)通常按(an)用途分為地(di)質(zhi)普查(cha)或勘探(tan)鉆(zhan)(zhan)(zhan)井(jing)(jing)(jing)(jing)、水文地(di)質(zhi)鉆(zhan)(zhan)(zhan)井(jing)(jing)(jing)(jing)、水井(jing)(jing)(jing)(jing)或工(gong)程(cheng)地(di)質(zhi)鉆(zhan)(zhan)(zhan)井(jing)(jing)(jing)(jing)、地(di)熱(re)鉆(zhan)(zhan)(zhan)井(jing)(jing)(jing)(jing)、石(shi)油鉆(zhan)(zhan)(zhan)井(jing)(jing)(jing)(jing)、煤田(tian)鉆(zhan)(zhan)(zhan)井(jing)(jing)(jing)(jing)、礦田(tian)鉆(zhan)(zhan)(zhan)井(jing)(jing)(jing)(jing)、建筑地(di)面(mian)鉆(zhan)(zhan)(zhan)井(jing)(jing)(jing)(jing)等[1] 。一口井(jing)(jing)(jing)(jing)從開鉆(zhan)(zhan)(zhan)到(dao)完(wan)成(cheng)，需(xu)進行以下三項(xiang)主要(yao)工(gong)作：1. 破(po)碎井(jing)(jing)(jing)(jing)底(di)巖(yan)(yan)石(shi)；2. 將破(po)碎的巖(yan)(yan)石(shi)(即巖(yan)(yan)屑)運移至地(di)面(mian)；3.鞏固(gu)(gu)井(jing)(jing)(jing)(jing)壁(簡稱固(gu)(gu)井(jing)(jing)(jing)(jing))。

　3.透(tou)水性差的巖(yan)層中(zhong)找透(tou)水性好(hao)的巖(yan)層在一些火成(cheng)巖(yan)層或變質巖(yan)分布的山(shan)區找水，打(da)井基巖(yan)深部如(ru)無構造裂(lie)隙發(fa)育(yu)，其透(tou)水性很(hen)差，而基巖(yan)上部由于長(chang)期遭(zao)受(shou)風化，形成(cheng)裂(lie)隙發(fa)育(yu)透(tou)水性良好(hao)的深厚風化殼，在風化殼中(zhong)以及(ji)在山(shan)坡(po)山(shan)麓的殘積壤積層中(zhong)，發(fa)現有空隙和裂(lie)隙水。