天井鉆施工團隊
天井(jing)施工(gong)(gong)是在地(di)(di)下巷道之間的豎直(zhi)或傾斜聯絡通道、煤(mei)倉、暗井(jing)等(deng)工(gong)(gong)程,由于無法(fa)像地(di)(di)面施工(gong)(gong)井(jing)筒那樣,布置穩(wen)車(che)、絞車(che)等(deng)大量設備,一般要(yao)采用反(fan)井(jing)法(fa)。施工(gong)(gong)反(fan)井(jing)是先由下向(xiang)上(shang)掘出小(xiao)斷面溜渣孔(kong),然后再由上(shang)向(xiang)下刷大成井(jing)。反(fan)井(jing)和刷井(jing)過程中破碎下來(lai)的巖石和地(di)(di)層涌水(shui),通過溜渣孔(kong)落到下水(shui)平。傳統的反(fan)井(jing)施工(gong)(gong)方法(fa),需要(yao)人員(yuan)進入工(gong)(gong)作(zuo)(zuo)面工(gong)(gong)作(zuo)(zuo),而采用反(fan)井(jing)鉆(zhan)機鑿井(jing),則實(shi)現反(fan)井(jing)施工(gong)(gong)機械化(hua)。
天井鉆(zhan)機的額定功率一般為(wei)125~450kW,動力輸出扭矩為(wei)120~400kN·m,成孔(kong)直徑可達(da)1.5~4m,成孔(kong)尺度為(wei)60~90m,可以(yi)滿(man)足各(ge)類大型基(ji)礎(chu)施工的要求。