免费菠萝视频app下载

　　10月8日，神華神東煤炭集團黃玉川煤礦1#外運膠運大巷提前7天順利貫通。

　　該工程于2010年12月開工建設，歷時22個月，外運膠運大巷的貫通，為后續安裝工程早日竣工投產奠定了良好的基礎。

　　在(zai)工(gong)(gong)(gong)程(cheng)建設過(guo)(guo)(guo)程(cheng)中，該(gai)礦克(ke)服(fu)了(le)(le)長距離通(tong)風，井下(xia)水(shui)(shui)(shui)文(wen)(wen)地(di)質條(tiao)(tiao)件復雜，巷(xiang)道頂(ding)(ding)(ding)幫破碎及掘進(jin)中過(guo)(guo)(guo)斷(duan)層、含水(shui)(shui)(shui)層，陷(xian)落柱等諸(zhu)多困難。通(tong)風方(fang)(fang)面，該(gai)礦采(cai)取井下(xia)風庫接力供(gong)風方(fang)(fang)案，縮(suo)短了(le)(le)供(gong)風距離，確保了(le)(le)工(gong)(gong)(gong)作面供(gong)風可靠、風量充足。在(zai)應對復雜的水(shui)(shui)(shui)文(wen)(wen)地(di)質條(tiao)(tiao)件方(fang)(fang)面，該(gai)礦堅持(chi)“及時(shi)(shi)支護(hu)(hu)、及時(shi)(shi)維護(hu)(hu)、及時(shi)(shi)噴(pen)漿(jiang)(jiang)(jiang)封閉”的原則，采(cai)取施(shi)工(gong)(gong)(gong)超(chao)前(qian)錨桿進(jin)行留頂(ding)(ding)(ding)，縮(suo)小循環進(jin)度(du)的方(fang)(fang)法(fa)安全順利(li)(li)通(tong)過(guo)(guo)(guo)了(le)(le)構造(zao)(zao)破碎區域(yu)。防治水(shui)(shui)(shui)工(gong)(gong)(gong)作方(fang)(fang)面，遵(zun)循“有掘必(bi)探(tan)(tan)，先(xian)探(tan)(tan)后掘”的探(tan)(tan)放水(shui)(shui)(shui)原則，摸清了(le)(le)巷(xiang)道水(shui)(shui)(shui)文(wen)(wen)地(di)質、采(cai)空區積水(shui)(shui)(shui)及小窯(yao)情(qing)況(kuang)(kuang)；同時(shi)(shi)，通(tong)過(guo)(guo)(guo)施(shi)工(gong)(gong)(gong)超(chao)前(qian)探(tan)(tan)放水(shui)(shui)(shui)孔，注漿(jiang)(jiang)(jiang)堵水(shui)(shui)(shui)，順利(li)(li)通(tong)過(guo)(guo)(guo)了(le)(le)含水(shui)(shui)(shui)層。在(zai)通(tong)過(guo)(guo)(guo)疑似(si)陷(xian)落柱構造(zao)(zao)時(shi)(shi)，采(cai)用(yong)施(shi)工(gong)(gong)(gong)超(chao)前(qian)探(tan)(tan)孔對陷(xian)落柱進(jin)行了(le)(le)探(tan)(tan)查(cha)，查(cha)明疑似(si)陷(xian)落柱區域(yu)內涌水(shui)(shui)(shui)情(qing)況(kuang)(kuang)。掘進(jin)過(guo)(guo)(guo)程(cheng)中，片(pian)幫漏頂(ding)(ding)(ding)嚴重，礦領導與區隊(dui)干部輪流24小時(shi)(shi)現(xian)場盯防，并召開現(xian)場辦公會，研(yan)究制定(ding)合理(li)的施(shi)工(gong)(gong)(gong)方(fang)(fang)案，采(cai)用(yong)了(le)(le)錨網索噴(pen)、架棚支護(hu)(hu)、鋼(gang)管撞楔、前(qian)探(tan)(tan)注漿(jiang)(jiang)(jiang)加(jia)固頂(ding)(ding)(ding)板(ban)等聯合支護(hu)(hu)措施(shi)加(jia)強頂(ding)(ding)(ding)板(ban)管理(li)，保證了(le)(le)外(wai)運膠(jiao)運大巷(xiang)順利(li)(li)順利(li)(li)貫通(tong)。