天(tian)(tian)井鉆機一般施工(gong)(gong)(gong)(gong)的(de)環境都(dou)是(shi)在礦上底下，由于礦山施工(gong)(gong)(gong)(gong)的(de)特(te)殊(shu)性，施工(gong)(gong)(gong)(gong)過程中可能不能進行詳(xiang)細的(de)觀察。但(dan)是(shi)，越是(shi)這(zhe)樣，越是(shi)每(mei)一環節都(dou)不能出(chu)現任(ren)何問題(ti)，不然會對(dui)整(zheng)個(ge)工(gong)(gong)(gong)(gong)程的(de)施工(gong)(gong)(gong)(gong)以及質量造成影響，所以今天(tian)(tian)小編就為大家整(zheng)理了一些(xie)，天(tian)(tian)井鉆機在工(gong)(gong)(gong)(gong)程施工(gong)(gong)(gong)(gong)中需要(yao)注意的(de)點：?

     第(di)一點(dian)：天井鉆(zhan)機應控制(zhi)鋼(gang)絲(si)繩(sheng)放松量，防止(zhi)鋼(gang)絲(si)繩(sheng)放松過多減少沖程(cheng)，放松過少則(ze)不能(neng)有效沖擊(ji)，形成“打空(kong)錘”，損(sun)壞沖擊(ji)機具。用卷(juan)揚機施(shi)工時，應在鋼(gang)絲(si)繩(sheng)做記號控制(zhi)沖程(cheng)。沖擊(ji)鉆(zhan)頭到底后要及時收繩(sheng)提起沖擊(ji)鉆(zhan)頭，防止(zhi)鋼(gang)絲(si)繩(sheng)纏卷(juan)沖擊(ji)鉆(zhan)具或(huo)反纏卷(juan)筒。??

     第二點：必(bi)須保證泥漿補給，保持孔(kong)(kong)內漿面穩定，護筒埋(mai)設較(jiao)淺(qian)或(huo)表土(tu)(tu)層土(tu)(tu)質較(jiao)差者，護筒內泥漿壓頭不宜(yi)過大。一(yi)般不宜(yi)多用(yong)高沖程，以免擾動孔(kong)(kong)壁而引起坍(tan)孔(kong)(kong)、擴孔(kong)(kong)或(huo)卡鉆事故。

     第三點：天井(jing)鉆(zhan)(zhan)機(ji)在(zai)施工中應經(jing)常(chang)檢查(cha)鋼絲(si)繩磨(mo)損(sun)情(qing)(qing)況、卡(ka)扣松(song)緊(jin)程度、轉向(xiang)裝置是否(fou)靈活(huo)，以免突然掉鉆(zhan)(zhan)。每次掏(tao)渣后(hou)或(huo)因其(qi)他原因停鉆(zhan)(zhan)后(hou)再次開鉆(zhan)(zhan)時，應由低(di)沖程逐漸加大到(dao)正(zheng)常(chang)沖程，以免卡(ka)鉆(zhan)(zhan)。??第四點：天井(jing)鉆(zhan)(zhan)機(ji)的沖擊鉆(zhan)(zhan)頭磨(mo)損(sun)較快，應經(jing)常(chang)檢修補焊，鉆(zhan)(zhan)進過程中應根據地層變化情(qing)(qing)況，適時調整鉆(zhan)(zhan)進技術(shu)參數，并經(jing)常(chang)檢查(cha)鉆(zhan)(zhan)孔水平情(qing)(qing)況，防止(zhi)傾斜(xie)。

??同(tong)時在天井(jing)鉆(zhan)(zhan)井(jing)施工(gong)前(qian)需要注意地面(mian)應平整且(qie)要有一定(ding)的硬度(du)，在施工(gong)過程中(zhong)，鉆(zhan)(zhan)機不得(de)出現履(lv)帶局(ju)部下陷(xian)。履(lv)帶局(ju)部下陷(xian)會(hui)引(yin)起桅桿前(qian)、后(hou)、左、右傾(qing)斜(xie)(xie)導(dao)致(zhi)打成斜(xie)(xie)孔，打成斜(xie)(xie)孔后(hou)鉆(zhan)(zhan)桿在孔內會(hui)受壓彎曲變(bian)形甚至折斷(duan)。