反井鉆機施工原理：

        反井鉆機(ji)工藝(yi)原(yuan)理是(shi)通(tong)過鉆機(ji)的電機(ji)帶(dai)動液(ye)壓(ya)(ya)(ya)馬達，液(ye)壓(ya)(ya)(ya)馬達驅動水(shui)龍(long)頭，并利用(yong)液(ye)壓(ya)(ya)(ya)動力(li)(li)將扭矩傳(chuan)遞給鉆具系統，帶(dai)動鉆桿(gan)及鉆頭旋轉，導(dao)(dao)孔(kong)(kong)(kong)鉆頭或(huo)擴(kuo)孔(kong)(kong)(kong)鉆頭上的滾(gun)(gun)刀(dao)在(zai)鉆壓(ya)(ya)(ya)的作(zuo)(zuo)用(yong)下(xia)，沿井底巖(yan)(yan)(yan)石工作(zuo)(zuo)面做(zuo)純滾(gun)(gun)動或(huo)微量滑移。同(tong)時主機(ji)油缸產生(sheng)(sheng)的軸向拉、壓(ya)(ya)(ya)力(li)(li)，也通(tong)過動力(li)(li)頭、鉆桿(gan)作(zuo)(zuo)用(yong)在(zai)導(dao)(dao)孔(kong)(kong)(kong)鉆頭或(huo)擴(kuo)孔(kong)(kong)(kong)鉆頭上，使(shi)(shi)導(dao)(dao)孔(kong)(kong)(kong)鉆頭的滾(gun)(gun)刀(dao)在(zai)鉆壓(ya)(ya)(ya)作(zuo)(zuo)用(yong)下(xia)滾(gun)(gun)動，產生(sheng)(sheng)沖擊荷(he)載，使(shi)(shi)滾(gun)(gun)刀(dao)齒對(dui)巖(yan)(yan)(yan)石產生(sheng)(sheng)沖擊、擠(ji)壓(ya)(ya)(ya)和(he)剪切作(zuo)(zuo)用(yong)，破(po)碎巖(yan)(yan)(yan)石。

　　被(bei)(bei)破碎的(de)(de)巖屑(xie)在導孔(kong)鉆(zhan)進時(shi)被(bei)(bei)正循環的(de)(de)洗井液沖洗，巖屑(xie)沿著鉆(zhan)桿與孔(kong)壁間(jian)的(de)(de)環形(xing)空間(jian)由洗井液提(ti)升到鉆(zhan)孔(kong)外。在擴孔(kong)時(shi)將導孔(kong)鉆(zhan)頭卸下(xia)，安裝反擴滾刀，巖屑(xie)靠自重直(zhi)接落到下(xia)水平巷道內，采用裝載(zai)機和運輸設(she)備及時(shi)清理運出。該機器施工(gong)(gong)(gong)工(gong)(gong)(gong)藝簡單，鉆(zhan)井速度快，適應性強(qiang)，能(neng)滿足(zu)不同巖層(ceng)施工(gong)(gong)(gong)需求(qiu)。

反井鉆機施工作業范圍：

    反(fan)井(jing)鉆機(ji)施(shi)工(gong)(也稱天井(jing)鉆機(ji))施(shi)工(gong)主(zhu)要用于地(di)下井(jing)筒建設中。

    反井鉆(zhan)機應用(yong)范圍見下(xia)表(biao)：