反打技術在起拔套管中的應用

沖擊器反(fan)打技能在起拔套管中的應(ying)用(yong)：

氣動(dong)潛孔錘鉆(zhan)進(jin)工藝(yi)是以壓縮(suo)空氣為介(jie)質，通過壓縮(suo)空氣經沖(chong)擊(ji)器(qi)(qi)轉(zhuan)換(huan)為較(jiao)高頻率的(de)(de)沖(chong)擊(ji)功(gong)進(jin)行(xing)破碎巖(yan) 石。依據(ju)沖(chong)擊(ji)器(qi)(qi)的(de)(de)作業(ye)原理(li)，設計了反打(da)(da)沖(chong)擊(ji)器(qi)(qi)。沖(chong)擊(ji)器(qi)(qi)反打(da)(da)技能(neng)首要應用(yong)(yong)(yong)于跟管(guan)鉆(zhan)進(jin)套(tao)管(guan)處理(li)。在松散破碎地層進(jin)行(xing)錨(mao)桿錨(mao)索(suo)或灌漿施工中，常(chang)常(chang)選(xuan)用(yong)(yong)(yong)跟管(guan)鉆(zhan)進(jin)的(de)(de)方法(fa)，然而在進(jin)行(xing)套(tao)管(guan)起(qi)拔處理(li)時，依托鉆(zhan)機自己往往很(hen)(hen)難帶動(dong)，一般(ban)需求選(xuan)用(yong)(yong)(yong)千(qian)斤頂(ding)才行(xing)。但(dan)有(you)時坡面較(jiao)高，千(qian)斤頂(ding)設備的(de)(de)搬運安裝很(hen)(hen)不便利(li)。利(li)用(yong)(yong)(yong)沖(chong)擊(ji)器(qi)(qi)進(jin)行(xing)反打(da)(da)套(tao)管(guan)，可到(dao)達(da)簡(jian)便起(qi)拔套(tao)管(guan)的(de)(de)目的(de)(de)。

結構原(yuan)理(li)：沖(chong)(chong)(chong)擊(ji)(ji)器(qi)發(fa)生的強大的沖(chong)(chong)(chong)擊(ji)(ji)功向(xiang)外打作(zuo)(zuo)用(yong)于套(tao)(tao)管(guan)(guan)，使套(tao)(tao)管(guan)(guan)往外拔。 拔管(guan)(guan)操作(zuo)(zuo)及(ji)(ji)留(liu)意(yi)事項：將(jiang)反(fan)打沖(chong)(chong)(chong)擊(ji)(ji)器(qi)按示意(yi)圖順次(ci)(ci)與(yu)起拔套(tao)(tao)管(guan)(guan)銜接，旋(xuan)(xuan)緊(jin)各銜接部(bu)位，銜接好進風管(guan)(guan)，并用(yong)繩索(suo)將(jiang)沖(chong)(chong)(chong)擊(ji)(ji)器(qi)沿套(tao)(tao)管(guan)(guan)軸(zhou)(zhou)線(xian)方向(xiang)懸吊。留(liu)意(yi)沖(chong)(chong)(chong)擊(ji)(ji)器(qi)軸(zhou)(zhou)線(xian)中 心與(yu)套(tao)(tao)管(guan)(guan)軸(zhou)(zhou)線(xian)中 心保持一致。先(xian)開(kai)少量風讓沖(chong)(chong)(chong)擊(ji)(ji)器(qi)試作(zuo)(zuo)業，并再次(ci)(ci)查看確認各部(bu)位已旋(xuan)(xuan)緊(jin)，然后逐(zhu)步添加至大風量，沖(chong)(chong)(chong)擊(ji)(ji)器(qi)正常作(zuo)(zuo)業，套(tao)(tao)管(guan)(guan)向(xiang)外移動。沖(chong)(chong)(chong)擊(ji)(ji)器(qi)向(xiang)外振沖(chong)(chong)(chong)套(tao)(tao)管(guan)(guan)時，盡量不要讓沖(chong)(chong)(chong)擊(ji)(ji)器(qi)及(ji)(ji)各銜接件旋(xuan)(xuan)轉。

由于跟(gen)管(guan)(guan)用(yong)套管(guan)(guan)一般都是反絲(si)銜(xian)接(jie)，正反向(xiang)旋轉都簡(jian)單引(yin)起絲(si)扣松(song)動，造(zao)成(cheng)絲(si)扣損(sun)壞或銜(xian)接(jie)部位(wei)脫落。 反打沖(chong)擊器(qi)(qi)(qi)首要以(yi)高(gao)頻率(lv)沖(chong)擊功進行作業(ye)，銜(xian)接(jie)部件簡(jian)單震松(song)，操(cao)作過程中要隨(sui)時查看各銜(xian)接(jie)部位(wei)，發現松(song)動及(ji)時處理。在(zai)(zai)沖(chong)擊器(qi)(qi)(qi)向(xiang)外(wai)振沖(chong)套管(guan)(guan)過程中，操(cao)作人(ren)員必 須站在(zai)(zai)沖(chong)擊器(qi)(qi)(qi)和(he)套管(guan)(guan)的兩邊，不得正對沖(chong)擊器(qi)(qi)(qi)，以(yi)避免沖(chong)擊器(qi)(qi)(qi)及(ji)各銜(xian)接(jie)件松(song)動脫落后(hou)傷人(ren)。

為了確保能有足夠的沖擊功，拔套管(guan)用反打沖擊器的標準(zhun)應盡量選用稍大一 級。