水壓(ya)(ya)光面爆破(po)技(ji)術(shu)在隧道(dao)掘(jue)進作(zuo)業中的(de)實際應(ying)用。提升(sheng)光面爆破(po)水平、嚴抓(zhua)隧道(dao)超挖管控進行了介紹。聚(ju)能(neng)水壓(ya)(ya)光面爆破(po)工(gong)藝技(ji)術(shu)很成熟、可操作(zuo)性(xing)很強、材料成本很低、施工(gong)速度很快、節能(neng)環保效果很顯著、經(jing)濟(ji)效益(yi)社會效益(yi)很高。一是(shi)(shi)要(yao)(yao)(yao)(yao)提高對(dui)推(tui)廣該(gai)項(xiang)技(ji)術(shu)重要(yao)(yao)(yao)(yao)性(xing)和必(bi)然性(xing)的(de)認識;二是(shi)(shi)要(yao)(yao)(yao)(yao)樹立(li)必(bi)須采取聚(ju)能(neng)水壓(ya)(ya)光面爆破(po)的(de)意識;三是(shi)(shi)要(yao)(yao)(yao)(yao)堅持培(pei)訓、示范、監督(du)“三位一體”;四是(shi)(shi)要(yao)(yao)(yao)(yao)制(zhi)(zhi)定切實的(de)獎懲(cheng)制(zhi)(zhi)度;五是(shi)(shi)要(yao)(yao)(yao)(yao)建立(li)檢查監督(du)機(ji)制(zhi)(zhi),持續促進該(gai)項(xiang)技(ji)術(shu)的(de)深(shen)入推(tui)廣。在隧道(dao)施工(gong)的(de)現場管理(li)、科技(ji)創新(xin)、人才培(pei)養、經(jing)濟(ji)效益(yi)等方面的(de)不足(zu)。建議對(dui)施工(gong)一線基礎技(ji)術(shu)工(gong)作(zuo)扎實推(tui)進;對(dui)新(xin)工(gong)藝、先進工(gong)法要(yao)(yao)(yao)(yao)深(shen)入學(xue)習(xi)鉆研;對(dui)消極懈怠、故步自封的(de)思想要(yao)(yao)(yao)(yao)堅決抵制(zhi)(zhi)。
在(zai)鐵(tie)路(lu)、礦山(shan)、水庫等大型(xing)工(gong)程(cheng)(cheng)中,爆(bao)破技(ji)術(shu)的(de)(de)作用(yong)(yong)(yong)很(hen)關鍵很(hen)重要(yao)(yao)。采(cai)(cai)礦修(xiu)路(lu)的(de)(de)開山(shan)挖(wa)(wa)隧道,城市對(dui)舊建(jian)筑(zhu)物(wu)的(de)(de)拆(chai)除(chu),都會用(yong)(yong)(yong)到(dao)爆(bao)破技(ji)術(shu)。隨著經濟的(de)(de)發(fa)展、工(gong)程(cheng)(cheng)建(jian)設(she)的(de)(de)增(zeng)多,爆(bao)破引起了(le)人(ren)們更多的(de)(de)關注。爆(bao)破聚(ju)能(neng)管作為一種科學(xue)技(ji)術(shu),應(ying)用(yong)(yong)(yong)很(hen)廣(guang),但在(zai)工(gong)程(cheng)(cheng)上的(de)(de)應(ying)用(yong)(yong)(yong)無(wu)疑是(shi)重要(yao)(yao)、常見的(de)(de),采(cai)(cai)礦開山(shan),修(xiu)鐵(tie)路(lu)、公路(lu)用(yong)(yong)(yong)鉆爆(bao)法來(lai)開掘隧道,水利(li)工(gong)程(cheng)(cheng)上也用(yong)(yong)(yong)一些,城市里面也使(shi)用(yong)(yong)(yong)了(le),拆(chai)除(chu)樓房。利(li)用(yong)(yong)(yong)炸(zha)爆(bao)炸(zha)產生的(de)(de)巨大能(neng)量破壞某(mou)種物(wu)體的(de)(de)原(yuan)結(jie)構,這(zhe)(zhe)種"破壞"效(xiao)果(guo)不是(shi)其他方(fang)(fang)法能(neng)代替的(de)(de),它雖然不是(shi)獨立(li)完成一個(ge)工(gong)程(cheng)(cheng),但卻是(shi)一個(ge)重要(yao)(yao)的(de)(de)工(gong)序,特別(bie)是(shi)石方(fang)(fang)開挖(wa)(wa)、礦山(shan)開采(cai)(cai)等工(gong)程(cheng)(cheng)缺少(shao)了(le)這(zhe)(zhe)個(ge)工(gong)序還不行。中國(guo)目前有發(fa)達(da)的(de)(de)鐵(tie)路(lu)和公路(lu)交通網,可以(yi)想(xiang)(xiang)象,當初在(zai)修(xiu)這(zhe)(zhe)些路(lu)的(de)(de)時候(hou)會遇到(dao)許多高山(shan)峻嶺(ling),一座(zuo)大山(shan)橫在(zai)兩地之間(jian),想(xiang)(xiang)要(yao)(yao)修(xiu)路(lu),就(jiu)必須(xu)讓這(zhe)(zhe)座(zuo)山(shan)消失,這(zhe)(zhe)個(ge)時候(hou)聚(ju)能(neng)管爆(bao)破就(jiu)起到(dao)決定性作用(yong)(yong)(yong)了(le)。
水壓光(guang)面爆(bao)(bao)(bao)(bao)破技(ji)術(shu),是在水壓光(guang)面爆(bao)(bao)(bao)(bao)破技(ji)術(shu)基礎上(shang)發展起來的一項(xiang)新(xin)技(ji)術(shu),其掏槽眼(yan)、輔助眼(yan)裝(zhuang)藥結構和(he)爆(bao)(bao)(bao)(bao)破方式與(yu)水壓光(guang)面爆(bao)(bao)(bao)(bao)破相同(tong),但在周(zhou)邊眼(yan)中(zhong)安裝(zhuang)專用(yong)(yong)聚能(neng)(neng)(neng)(neng)管(guan)裝(zhuang)置替代常規爆(bao)(bao)(bao)(bao)破藥卷和(he)傳爆(bao)(bao)(bao)(bao)線,利用(yong)(yong)聚能(neng)(neng)(neng)(neng)管(guan)產(chan)(chan)生(sheng)(sheng)的粒子射(she)(she)流(liu)動能(neng)(neng)(neng)(neng)、高(gao)壓爆(bao)(bao)(bao)(bao)破氣體應力及“氣楔”作用(yong)(yong),形成平整圓順的開(kai)挖(wa)輪廓面,對(dui)控制超欠挖(wa)具有(you)良好(hao)效果,有(you)效提(ti)(ti)升了隧道施工質量、進(jin)度(du)和(he)經(jing)濟效益。科學合(he)理地利用(yong)(yong)能(neng)(neng)(neng)(neng)源,提(ti)(ti)高(gao)能(neng)(neng)(neng)(neng)源利用(yong)(yong)效率(lv),對(dui)節(jie)能(neng)(neng)(neng)(neng)減(jian)排(pai)也(ye)十分重要。利用(yong)(yong)聚能(neng)(neng)(neng)(neng)管(guan)兩(liang)端的水平開(kai)出的聚能(neng)(neng)(neng)(neng)槽產(chan)(chan)生(sheng)(sheng)的聚能(neng)(neng)(neng)(neng)射(she)(she)流(liu)效應對(dui)巖石進(jin)行破碎(sui)。據專家測算,由于聚能(neng)(neng)(neng)(neng)管(guan)兩(liang)端聚能(neng)(neng)(neng)(neng)槽產(chan)(chan)生(sheng)(sheng)的聚能(neng)(neng)(neng)(neng)切割效應,其能(neng)(neng)(neng)(neng)效比提(ti)(ti)升一個量級。
預(yu)裂(lie)(lie)與光(guang)(guang)(guang)面爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)技(ji)術的(de)歷史與現(xian)(xian)狀:預(yu)裂(lie)(lie)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)是沿(yan)設(she)計(ji)開挖邊界(jie)布(bu)置密(mi)集炮孔(kong),采(cai)(cai)取不耦合裝藥或(huo)裝填低(di)威力(li)炸(zha)藥,在(zai)(zai)主爆(bao)(bao)(bao)(bao)(bao)區(qu)之前起(qi)爆(bao)(bao)(bao)(bao)(bao),從而在(zai)(zai)爆(bao)(bao)(bao)(bao)(bao)區(qu)與保(bao)留區(qu)之間形成(cheng)預(yu)裂(lie)(lie)縫,以減弱主爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)對保(bao)留巖體的(de)破(po)(po)(po)(po)壞并形成(cheng)平(ping)整輪(lun)廓面的(de)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)作(zuo)業。光(guang)(guang)(guang)面爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)是沿(yan)設(she)計(ji)開挖邊界(jie)布(bu)設(she)密(mi)集炮孔(kong),采(cai)(cai)用不耦合裝藥或(huo)裝填低(di)威力(li)炸(zha)藥,在(zai)(zai)主爆(bao)(bao)(bao)(bao)(bao)區(qu)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)之后起(qi)爆(bao)(bao)(bao)(bao)(bao)的(de)以形成(cheng)平(ping)整的(de)開挖輪(lun)廓面的(de)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)作(zuo)業。爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)技(ji)術的(de)發(fa)展是先出現(xian)(xian)光(guang)(guang)(guang)面爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po),然后衍生發(fa)展為預(yu)裂(lie)(lie)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)。聚(ju)能管國內歷史與現(xian)(xian)狀,我國于1964~1965年在(zai)(zai)湖北(bei)陸水水電站(zhan)施工中做過(guo)淺孔(kong)預(yu)裂(lie)(lie)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)試(shi)驗,1965年鐵道部(bu)(bu)門在(zai)(zai)成(cheng)昆鐵路(lu)建(jian)設(she)中開始試(shi)驗光(guang)(guang)(guang)面爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po),1977年在(zai)(zai)西延線張家船工點,全(quan)長近200m的(de)2000m2路(lu)塹邊坡(po)全(quan)部(bu)(bu)采(cai)(cai)用光(guang)(guang)(guang)面爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po),爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)后邊坡(po)平(ping)整穩定,殘留的(de)半孔(kong)清晰可(ke)見,是鐵路(lu)建(jian)設(she)中采(cai)(cai)用路(lu)塹光(guang)(guang)(guang)面爆(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)(po)。
火索起爆法,導火索起爆法是利用導火索傳遞火焰點燃火雷管進而起爆炸藥。這種起爆法所需的材料有:導火索、火雷管和點火材料。專業爆破聚能管導火索起爆法操作簡單、靈活,使用方便,成本較低,廣泛應用于小型爆破和掘進。由于導火索的速燃、緩燃等弊病,在爆破中事故所占比重最大。不能多處裝藥同時起爆。導爆索起爆法,爆破聚能管價格用(yong)導(dao)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)索(suo)直(zhi)接起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)炸(zha)藥(yao)包的(de)方(fang)法(fa)叫(jiao)導(dao)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)索(suo)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)法(fa)。先用(yong)雷(lei)(lei)管(guan)(guan)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)導(dao)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)索(suo),當導(dao)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)索(suo)的(de)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)轟波傳至炸(zha)藥(yao)包時,將(jiang)炸(zha)藥(yao)引爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)。在需(xu)要(yao)延時分段(duan)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)的(de)地方(fang),將(jiang)導(dao)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)索(suo)中(zhong)接入繼(ji)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)管(guan)(guan),就能達到導(dao)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)索(suo)毫秒爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)破的(de)目的(de)。這種(zhong)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)破法(fa)所需(xu)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)材料(liao)有(you):雷(lei)(lei)管(guan)(guan)、導(dao)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)索(suo)和繼(ji)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)管(guan)(guan)等。導(dao)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)索(suo)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)(bao)(bao)網路(lu)常用(yong)的(de)有(you):串聯(lian)、簇(cu)并聯(lian)、單(dan)向分段(duan)并聯(lian)和雙向分段(duan)并聯(lian)等。
各(ge)種爆(bao)破(po)(po)(po)、爆(bao)破(po)(po)(po)器(qi)材銷毀以(yi)及(ji)(ji)爆(bao)破(po)(po)(po)器(qi)材意(yi)外爆(bao)炸時(shi),爆(bao)破(po)(po)(po)源與(yu)人員和(he)其他保(bao)護對象之間(jian)的安(an)(an)全(quan)距(ju)(ju)(ju)離(li)(li)(li)稱為爆(bao)破(po)(po)(po)安(an)(an)全(quan)距(ju)(ju)(ju)離(li)(li)(li)。爆(bao)破(po)(po)(po)安(an)(an)全(quan)距(ju)(ju)(ju)離(li)(li)(li)應(ying)(ying)取各(ge)種爆(bao)破(po)(po)(po)效應(ying)(ying)(地(di)(di)震(zhen)(zhen)、沖擊(ji)(ji)波、飛石、有毒氣體等(deng))分(fen)別核(he)定(ding)(ding)(ding)的大值。爆(bao)破(po)(po)(po)時(shi),必(bi)然產生爆(bao)破(po)(po)(po)地(di)(di)震(zhen)(zhen)、空氣沖擊(ji)(ji)波、碎石飛散及(ji)(ji)有害(hai)氣體,因(yin)此(ci),爆(bao)破(po)(po)(po)設計時(shi)必(bi)須確(que)定(ding)(ding)(ding)爆(bao)破(po)(po)(po)危害(hai)范圍,并確(que)定(ding)(ding)(ding)爆(bao)點(dian)到附近人員、設備、建筑(zhu)物及(ji)(ji)井巷等(deng)的安(an)(an)全(quan),這一段(duan)距(ju)(ju)(ju)離(li)(li)(li)就(jiu)(jiu)稱為爆(bao)破(po)(po)(po)安(an)(an)全(quan)距(ju)(ju)(ju)離(li)(li)(li)。如何控(kong)制好這段(duan)距(ju)(ju)(ju)離(li)(li)(li)就(jiu)(jiu)顯的尤為重(zhong)要(yao)。為保(bao)證爆(bao)破(po)(po)(po)安(an)(an)全(quan),爆(bao)破(po)(po)(po)地(di)(di)點(dian)與(yu)人員或其他應(ying)(ying)保(bao)護對象之間(jian)必(bi)須保(bao)持短的相(xiang)隔長度。爆(bao)破(po)(po)(po)有害(hai)效應(ying)(ying)隨距(ju)(ju)(ju)離(li)(li)(li)的增加有規(gui)(gui)律地(di)(di)衰減,用距(ju)(ju)(ju)離(li)(li)(li)作為安(an)(an)全(quan)尺度可限定(ding)(ding)(ding)爆(bao)破(po)(po)(po)有害(hai)效應(ying)(ying)在允(yun)許限度之內。中國(guo)《爆(bao)破(po)(po)(po)安(an)(an)全(quan)規(gui)(gui)程》規(gui)(gui)定(ding)(ding)(ding)了爆(bao)破(po)(po)(po)地(di)(di)震(zhen)(zhen)安(an)(an)全(quan)距(ju)(ju)(ju)離(li)(li)(li),個別飛散物安(an)(an)全(quan)距(ju)(ju)(ju)離(li)(li)(li),以(yi)及(ji)(ji)爆(bao)炸沖擊(ji)(ji)波的安(an)(an)全(quan)距(ju)(ju)(ju)離(li)(li)(li)。