水(shui)壓(ya)光面(mian)(mian)爆(bao)破技(ji)術(shu)(shu),是在(zai)水(shui)壓(ya)光面(mian)(mian)爆(bao)破技(ji)術(shu)(shu)基礎上發展起來(lai)的(de)(de)(de)一(yi)項新技(ji)術(shu)(shu),其(qi)掏槽(cao)眼、輔(fu)助眼裝藥結構和爆(bao)破方式與水(shui)壓(ya)光面(mian)(mian)爆(bao)破相同,但在(zai)周邊眼中安裝專用聚能(neng)(neng)(neng)(neng)(neng)管裝置替代常規(gui)爆(bao)破藥卷和傳爆(bao)線(xian),利用聚能(neng)(neng)(neng)(neng)(neng)管產生(sheng)的(de)(de)(de)粒子(zi)射流動(dong)能(neng)(neng)(neng)(neng)(neng)、高(gao)壓(ya)爆(bao)破氣體應(ying)(ying)力(li)及(ji)“氣楔(xie)”作用,形成平整(zheng)圓順(shun)的(de)(de)(de)開(kai)挖(wa)輪廓面(mian)(mian),對控制超欠挖(wa)具有良好(hao)效(xiao)果,有效(xiao)提(ti)升了(le)隧道施工質量、進度和經濟(ji)效(xiao)益。科學合理(li)地(di)利用能(neng)(neng)(neng)(neng)(neng)源(yuan),提(ti)高(gao)能(neng)(neng)(neng)(neng)(neng)源(yuan)利用效(xiao)率,對節能(neng)(neng)(neng)(neng)(neng)減排也十分(fen)重要。利用聚能(neng)(neng)(neng)(neng)(neng)管兩端的(de)(de)(de)水(shui)平開(kai)出的(de)(de)(de)聚能(neng)(neng)(neng)(neng)(neng)槽(cao)產生(sheng)的(de)(de)(de)聚能(neng)(neng)(neng)(neng)(neng)射流效(xiao)應(ying)(ying)對巖(yan)石進行破碎。據專家測算(suan),由(you)于聚能(neng)(neng)(neng)(neng)(neng)管兩端聚能(neng)(neng)(neng)(neng)(neng)槽(cao)產生(sheng)的(de)(de)(de)聚能(neng)(neng)(neng)(neng)(neng)切割效(xiao)應(ying)(ying),其(qi)能(neng)(neng)(neng)(neng)(neng)效(xiao)比提(ti)升一(yi)個量級。
專用爆破聚能管預裂與光面爆破技術的歷史與現狀:預裂爆破是沿設計開挖邊界布置密集炮孔,采取不耦合裝藥或裝填低威力炸藥,在主爆區之前起爆,從而在爆區與保留區之間形成預裂縫,以減弱主爆破對保留巖體的破壞并形成平整輪廓面的爆破作業。爆破聚能管價格光面(mian)(mian)(mian)爆(bao)(bao)(bao)(bao)破(po)是沿設(she)計(ji)開挖(wa)邊界布設(she)密(mi)集炮孔,采(cai)用不耦合裝(zhuang)藥或裝(zhuang)填(tian)低威力炸藥,在主爆(bao)(bao)(bao)(bao)區爆(bao)(bao)(bao)(bao)破(po)之后(hou)(hou)起爆(bao)(bao)(bao)(bao)的以(yi)形成平整的開挖(wa)輪(lun)廓面(mian)(mian)(mian)的爆(bao)(bao)(bao)(bao)破(po)作業。爆(bao)(bao)(bao)(bao)破(po)技術的發展是先(xian)出現光面(mian)(mian)(mian)爆(bao)(bao)(bao)(bao)破(po),然后(hou)(hou)衍生發展為預裂(lie)(lie)爆(bao)(bao)(bao)(bao)破(po)。聚能管國(guo)內歷(li)史與(yu)現狀(zhuang),我國(guo)于1964~1965年(nian)在湖北陸水(shui)(shui)水(shui)(shui)電站(zhan)施工中(zhong)做(zuo)過(guo)淺孔預裂(lie)(lie)爆(bao)(bao)(bao)(bao)破(po)試驗,1965年(nian)鐵(tie)道部(bu)門在成昆(kun)鐵(tie)路建設(she)中(zhong)開始試驗光面(mian)(mian)(mian)爆(bao)(bao)(bao)(bao)破(po),1977年(nian)在西延線張家船工點,全長近200m的2000m2路塹(qian)邊坡全部(bu)采(cai)用光面(mian)(mian)(mian)爆(bao)(bao)(bao)(bao)破(po),爆(bao)(bao)(bao)(bao)破(po)后(hou)(hou)邊坡平整穩(wen)定,殘(can)留的半孔清晰(xi)可見,是鐵(tie)路建設(she)中(zhong)采(cai)用路塹(qian)光面(mian)(mian)(mian)爆(bao)(bao)(bao)(bao)破(po)。
各種(zhong)爆(bao)(bao)(bao)破(po)、爆(bao)(bao)(bao)破(po)器材銷毀以(yi)及(ji)爆(bao)(bao)(bao)破(po)器材意外爆(bao)(bao)(bao)炸時,爆(bao)(bao)(bao)破(po)源與(yu)(yu)人員(yuan)和其他保護對象(xiang)之(zhi)間的安(an)(an)(an)(an)全(quan)(quan)(quan)(quan)距(ju)(ju)離(li)(li)(li)稱為(wei)爆(bao)(bao)(bao)破(po)安(an)(an)(an)(an)全(quan)(quan)(quan)(quan)距(ju)(ju)離(li)(li)(li)。爆(bao)(bao)(bao)破(po)安(an)(an)(an)(an)全(quan)(quan)(quan)(quan)距(ju)(ju)離(li)(li)(li)應(ying)取(qu)各種(zhong)爆(bao)(bao)(bao)破(po)效(xiao)應(ying)(地(di)震(zhen)、沖(chong)擊(ji)(ji)(ji)波(bo)、飛(fei)石(shi)(shi)、有(you)(you)(you)毒氣(qi)體等(deng))分(fen)別核定的大(da)值(zhi)。爆(bao)(bao)(bao)破(po)時,必(bi)然產(chan)生爆(bao)(bao)(bao)破(po)地(di)震(zhen)、空氣(qi)沖(chong)擊(ji)(ji)(ji)波(bo)、碎(sui)石(shi)(shi)飛(fei)散及(ji)有(you)(you)(you)害(hai)(hai)氣(qi)體,因此(ci),爆(bao)(bao)(bao)破(po)設計(ji)時必(bi)須確定爆(bao)(bao)(bao)破(po)危害(hai)(hai)范圍,并(bing)確定爆(bao)(bao)(bao)點(dian)到附(fu)近人員(yuan)、設備、建筑物及(ji)井巷等(deng)的安(an)(an)(an)(an)全(quan)(quan)(quan)(quan),這(zhe)一段距(ju)(ju)離(li)(li)(li)就(jiu)稱為(wei)爆(bao)(bao)(bao)破(po)安(an)(an)(an)(an)全(quan)(quan)(quan)(quan)距(ju)(ju)離(li)(li)(li)。如何控制好這(zhe)段距(ju)(ju)離(li)(li)(li)就(jiu)顯的尤(you)為(wei)重要。為(wei)保證爆(bao)(bao)(bao)破(po)安(an)(an)(an)(an)全(quan)(quan)(quan)(quan),爆(bao)(bao)(bao)破(po)地(di)點(dian)與(yu)(yu)人員(yuan)或(huo)其他應(ying)保護對象(xiang)之(zhi)間必(bi)須保持(chi)短的相隔長度(du)。爆(bao)(bao)(bao)破(po)有(you)(you)(you)害(hai)(hai)效(xiao)應(ying)隨距(ju)(ju)離(li)(li)(li)的增(zeng)加有(you)(you)(you)規律(lv)地(di)衰減,用距(ju)(ju)離(li)(li)(li)作為(wei)安(an)(an)(an)(an)全(quan)(quan)(quan)(quan)尺(chi)度(du)可(ke)限定爆(bao)(bao)(bao)破(po)有(you)(you)(you)害(hai)(hai)效(xiao)應(ying)在(zai)允許限度(du)之(zhi)內。中國《爆(bao)(bao)(bao)破(po)安(an)(an)(an)(an)全(quan)(quan)(quan)(quan)規程》規定了爆(bao)(bao)(bao)破(po)地(di)震(zhen)安(an)(an)(an)(an)全(quan)(quan)(quan)(quan)距(ju)(ju)離(li)(li)(li),個別飛(fei)散物安(an)(an)(an)(an)全(quan)(quan)(quan)(quan)距(ju)(ju)離(li)(li)(li),以(yi)及(ji)爆(bao)(bao)(bao)炸沖(chong)擊(ji)(ji)(ji)波(bo)的安(an)(an)(an)(an)全(quan)(quan)(quan)(quan)距(ju)(ju)離(li)(li)(li)。
水(shui)(shui)壓光面(mian)(mian)爆破技(ji)術(shu)在隧道掘進作(zuo)業中的(de)實際應用。提升光面(mian)(mian)爆破水(shui)(shui)平、嚴(yan)抓隧道超挖管控進行了介紹(shao)。聚能(neng)水(shui)(shui)壓光面(mian)(mian)爆破工藝技(ji)術(shu)很(hen)成熟、可操作(zuo)性(xing)很(hen)強、材料成本很(hen)低、施工速(su)度很(hen)快、節能(neng)環保效(xiao)果很(hen)顯著、經濟效(xiao)益(yi)社會效(xiao)益(yi)很(hen)高。一是(shi)(shi)(shi)要(yao)提高對(dui)推廣該(gai)項(xiang)技(ji)術(shu)重要(yao)性(xing)和必(bi)然性(xing)的(de)認識;二是(shi)(shi)(shi)要(yao)樹立必(bi)須采取聚能(neng)水(shui)(shui)壓光面(mian)(mian)爆破的(de)意識;三(san)是(shi)(shi)(shi)要(yao)堅持培訓、示范、監(jian)督(du)“三(san)位一體”;四是(shi)(shi)(shi)要(yao)制(zhi)定切實的(de)獎懲制(zhi)度;五是(shi)(shi)(shi)要(yao)建(jian)立檢(jian)查監(jian)督(du)機制(zhi),持續促進該(gai)項(xiang)技(ji)術(shu)的(de)深(shen)入推廣。在隧道施工的(de)現(xian)場管理、科技(ji)創新、人才培養、經濟效(xiao)益(yi)等方面(mian)(mian)的(de)不(bu)足(zu)。建(jian)議(yi)對(dui)施工一線(xian)基礎技(ji)術(shu)工作(zuo)扎實推進;對(dui)新工藝、先進工法要(yao)深(shen)入學習鉆研;對(dui)消(xiao)極懈(xie)怠、故步自封的(de)思想(xiang)要(yao)堅決(jue)抵制(zhi)。