反井鉆機施工原理：

        反井(jing)鉆(zhan)(zhan)機(ji)(ji)工(gong)藝原理是通過鉆(zhan)(zhan)機(ji)(ji)的電機(ji)(ji)帶(dai)動液(ye)壓(ya)(ya)(ya)馬(ma)達，液(ye)壓(ya)(ya)(ya)馬(ma)達驅動水龍(long)頭(tou)(tou)，并(bing)利用(yong)液(ye)壓(ya)(ya)(ya)動力將扭矩傳遞給鉆(zhan)(zhan)具系(xi)統，帶(dai)動鉆(zhan)(zhan)桿及鉆(zhan)(zhan)頭(tou)(tou)旋轉，導(dao)孔(kong)(kong)鉆(zhan)(zhan)頭(tou)(tou)或(huo)擴孔(kong)(kong)鉆(zhan)(zhan)頭(tou)(tou)上的滾刀(dao)在鉆(zhan)(zhan)壓(ya)(ya)(ya)的作用(yong)下，沿(yan)井(jing)底巖石工(gong)作面做純滾動或(huo)微量滑移。同時主機(ji)(ji)油缸(gang)產生(sheng)(sheng)的軸(zhou)向拉、壓(ya)(ya)(ya)力，也通過動力頭(tou)(tou)、鉆(zhan)(zhan)桿作用(yong)在導(dao)孔(kong)(kong)鉆(zhan)(zhan)頭(tou)(tou)或(huo)擴孔(kong)(kong)鉆(zhan)(zhan)頭(tou)(tou)上，使導(dao)孔(kong)(kong)鉆(zhan)(zhan)頭(tou)(tou)的滾刀(dao)在鉆(zhan)(zhan)壓(ya)(ya)(ya)作用(yong)下滾動，產生(sheng)(sheng)沖擊(ji)(ji)荷載(zai)，使滾刀(dao)齒對(dui)巖石產生(sheng)(sheng)沖擊(ji)(ji)、擠壓(ya)(ya)(ya)和剪切作用(yong)，破(po)碎巖石。

　　被破(po)碎(sui)的巖屑在導孔鉆(zhan)進(jin)時被正循環(huan)的洗井(jing)液沖洗，巖屑沿(yan)著鉆(zhan)桿與(yu)孔壁間的環(huan)形空間由洗井(jing)液提升到鉆(zhan)孔外。在擴孔時將導孔鉆(zhan)頭卸(xie)下，安(an)裝(zhuang)反擴滾(gun)刀(dao)，巖屑靠自重直(zhi)接落到下水(shui)平(ping)巷道(dao)內(nei)，采用裝(zhuang)載機和運輸設(she)備(bei)及時清理運出(chu)。該機器施工工藝簡單，鉆(zhan)井(jing)速(su)度快，適(shi)應性(xing)強，能滿足不同(tong)巖層施工需(xu)求。

反井鉆機施工作業范圍：

    反(fan)井鉆(zhan)機施工(也稱(cheng)天(tian)井鉆(zhan)機)施工主要(yao)用(yong)于(yu)地下井筒建設中。

    反(fan)井鉆機應用范圍見下表：