發揮巨大效(xiao)力(li)的(de)(de)(de)(de)關鍵又在其上面(mian)的(de)(de)(de)(de)“聚(ju)能(neng)(neng)槽”上。項目部(bu)目前采用的(de)(de)(de)(de)聚(ju)能(neng)(neng)管(guan)有兩個“聚(ju)能(neng)(neng)槽”,通過(guo)這兩個聚(ju)能(neng)(neng)槽的(de)(de)(de)(de)作用讓爆炸的(de)(de)(de)(de)威力(li)在隧道中切割出十分平順的(de)(de)(de)(de)輪廓線,的(de)(de)(de)(de)控(kong)(kong)制(zhi)(zhi)了爆破(po)量,有效(xiao)管(guan)控(kong)(kong)了超挖(wa)欠挖(wa)的(de)(de)(de)(de)現象。為(wei)(wei)了進一(yi)步嚴(yan)格(ge)控(kong)(kong)制(zhi)(zhi)開挖(wa)輪廓,達到(dao)提高光面(mian)爆破(po)效(xiao)果的(de)(de)(de)(de)目的(de)(de)(de)(de),并研究出了聚(ju)能(neng)(neng)管(guan)上兩個“聚(ju)能(neng)(neng)槽”變為(wei)(wei)三個“聚(ju)能(neng)(neng)槽”的(de)(de)(de)(de)發明(ming)設計(ji),目前,該發明(ming)設計(ji)已經(jing)(jing)(jing)進入到(dao)了試生產階段。未來,三“聚(ju)能(neng)(neng)槽”設計(ji)的(de)(de)(de)(de)聚(ju)能(neng)(neng)水(shui)壓爆破(po)技術將推動中鐵(tie)十四局(ju)四公司張吉懷鐵(tie)路項目部(bu)施(shi)工開展邁上一(yi)個新(xin)的(de)(de)(de)(de)臺階,給項目部(bu)帶來巨大的(de)(de)(de)(de)經(jing)(jing)(jing)濟效(xiao)益。工程(cheng)爆破(po)技術經(jing)(jing)(jing)過(guo)幾十年的(de)(de)(de)(de)發展,已經(jing)(jing)(jing)滲透到(dao)經(jing)(jing)(jing)濟建(jian)(jian)設的(de)(de)(de)(de)眾多(duo)領域,特(te)別為(wei)(wei)中國的(de)(de)(de)(de)鐵(tie)路建(jian)(jian)設、礦山開采、城(cheng)市拆舊定(ding)向爆破(po)等(deng)做出了重(zhong)要貢獻。
水(shui)壓光面(mian)(mian)(mian)爆(bao)破技術在隧道掘(jue)進(jin)(jin)(jin)作(zuo)業中的實際應用。提升光面(mian)(mian)(mian)爆(bao)破水(shui)平(ping)、嚴抓隧道超挖管控進(jin)(jin)(jin)行了(le)介紹(shao)。聚能水(shui)壓光面(mian)(mian)(mian)爆(bao)破工(gong)(gong)藝(yi)技術很(hen)(hen)成熟、可操作(zuo)性(xing)(xing)很(hen)(hen)強(qiang)、材料成本(ben)很(hen)(hen)低、施工(gong)(gong)速度很(hen)(hen)快、節(jie)能環保效果很(hen)(hen)顯著(zhu)、經(jing)濟效益(yi)社會效益(yi)很(hen)(hen)高。一(yi)是要(yao)提高對推廣(guang)該項(xiang)技術重要(yao)性(xing)(xing)和必(bi)然性(xing)(xing)的認識(shi);二是要(yao)樹立必(bi)須采取聚能水(shui)壓光面(mian)(mian)(mian)爆(bao)破的意識(shi);三(san)是要(yao)堅(jian)(jian)持培訓(xun)、示范、監督“三(san)位(wei)一(yi)體”;四是要(yao)制(zhi)定切實的獎懲制(zhi)度;五是要(yao)建立檢查(cha)監督機制(zhi),持續促進(jin)(jin)(jin)該項(xiang)技術的深入推廣(guang)。在隧道施工(gong)(gong)的現場管理、科技創(chuang)新、人才培養、經(jing)濟效益(yi)等方面(mian)(mian)(mian)的不足。建議對施工(gong)(gong)一(yi)線基礎技術工(gong)(gong)作(zuo)扎實推進(jin)(jin)(jin);對新工(gong)(gong)藝(yi)、先(xian)進(jin)(jin)(jin)工(gong)(gong)法(fa)要(yao)深入學習鉆(zhan)研;對消極懈(xie)怠、故步自封的思想要(yao)堅(jian)(jian)決抵制(zhi)。
我國(guo)于1983年制定(ding)了(le)《水(shui)工(gong)(gong)(gong)建(jian)(jian)筑物(wu)巖行基(ji)礎開挖(wa)(wa)工(gong)(gong)(gong)程(cheng)(cheng)施(shi)工(gong)(gong)(gong)技(ji)(ji)術(shu)規范(fan)(fan)(fan)》(sD 121l一1983)。自此,在(zai)水(shui)利水(shui)電建(jian)(jian)設中預(yu)(yu)裂爆(bao)(bao)破(po)(po)(po)與光(guang)(guang)面(mian)爆(bao)(bao)破(po)(po)(po)已成(cheng)為必(bi)須(xu)進行的(de)(de)(de)保護(hu)邊(bian)坡(po)(po)(po)質量(liang)的(de)(de)(de)爆(bao)(bao)破(po)(po)(po)開挖(wa)(wa)技(ji)(ji)術(shu)措施(shi)。此后在(zai)此基(ji)礎上(shang)修訂的(de)(de)(de)《水(shui)工(gong)(gong)(gong)建(jian)(jian)筑物(wu)巖石基(ji)礎開挖(wa)(wa)工(gong)(gong)(gong)程(cheng)(cheng)施(shi)工(gong)(gong)(gong)技(ji)(ji)術(shu)規范(fan)(fan)(fan)》(SL 47一1994)以(yi)及(ji)在(zai)《水(shui)電水(shui)利爆(bao)(bao)破(po)(po)(po)工(gong)(gong)(gong)程(cheng)(cheng)施(shi)工(gong)(gong)(gong)技(ji)(ji)術(shu)規范(fan)(fan)(fan)》(DL/T 5135—2001)和(he)《水(shui)工(gong)(gong)(gong)建(jian)(jian)筑物(wu)巖石基(ji)礎開挖(wa)(wa)工(gong)(gong)(gong)程(cheng)(cheng)施(shi)工(gong)(gong)(gong)技(ji)(ji)術(shu)規范(fan)(fan)(fan)》(DL/T 5389~2007)中預(yu)(yu)裂爆(bao)(bao)破(po)(po)(po)與光(guang)(guang)面(mian)爆(bao)(bao)破(po)(po)(po)均被編(bian)入(ru)并(bing)有所改進,DL/T 5135—2001正在(zai)修編(bian)為DL/T 5135—2012。鐵(tie)道部(bu)也(ye)不僅規定(ding)了(le)凡是Ⅲ級(ji)以(yi)上(shang)的(de)(de)(de)巖石邊(bian)坡(po)(po)(po),設計(ji)邊(bian)坡(po)(po)(po)坡(po)(po)(po)度(du)為1:0.1~1:0.75,在(zai)邊(bian)坡(po)(po)(po)部(bu)位(wei)的(de)(de)(de)爆(bao)(bao)破(po)(po)(po)設計(ji)和(he)施(shi)工(gong)(gong)(gong)都應采用光(guang)(guang)面(mian)爆(bao)(bao)破(po)(po)(po)或(huo)預(yu)(yu)裂爆(bao)(bao)破(po)(po)(po),并(bing)闡(chan)述(shu)了(le)光(guang)(guang)面(mian)(預(yu)(yu)裂)爆(bao)(bao)破(po)(po)(po)施(shi)工(gong)(gong)(gong)技(ji)(ji)術(shu)設計(ji)的(de)(de)(de)原則和(he)參數、安(an)全(quan)措施(shi),而(er)且(qie)還明確了(le)路(lu)塹邊(bian)坡(po)(po)(po)光(guang)(guang)面(mian)(預(yu)(yu)裂)爆(bao)(bao)破(po)(po)(po)項目(mu)質量(liang)驗收檢測數量(liang)和(he)檢測方法。無疑該規程(cheng)(cheng)的(de)(de)(de)實施(shi),有力地(di)推動和(he)促進了(le)光(guang)(guang)面(mian)(預(yu)(yu)裂)爆(bao)(bao)破(po)(po)(po)技(ji)(ji)術(shu)在(zai)鐵(tie)路(lu)建(jian)(jian)設中的(de)(de)(de)應用與發展。
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。專用礦用型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,礦用型聚能管價格用(yong)導(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)(suo)直接起(qi)爆(bao)(bao)(bao)炸(zha)藥包的方法叫(jiao)導(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)(suo)起(qi)爆(bao)(bao)(bao)法。先用(yong)雷管(guan)起(qi)爆(bao)(bao)(bao)導(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)(suo),當導(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)(suo)的爆(bao)(bao)(bao)轟波傳(chuan)至(zhi)炸(zha)藥包時(shi),將炸(zha)藥引爆(bao)(bao)(bao)。在(zai)需(xu)要(yao)延(yan)時(shi)分段(duan)起(qi)爆(bao)(bao)(bao)的地(di)方,將導(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)(suo)中接入繼爆(bao)(bao)(bao)管(guan),就能達(da)到(dao)導(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)(suo)毫秒爆(bao)(bao)(bao)破的目的。這種爆(bao)(bao)(bao)破法所需(xu)起(qi)爆(bao)(bao)(bao)材料(liao)有(you):雷管(guan)、導(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)(suo)和(he)繼爆(bao)(bao)(bao)管(guan)等。導(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)(suo)起(qi)爆(bao)(bao)(bao)網路(lu)常(chang)用(yong)的有(you):串聯、簇并聯、單向分段(duan)并聯和(he)雙向分段(duan)并聯等。
我國(guo)20世紀60年(nian)代利用(yong)斷裂(lie)力(li)學對巖石損傷(shang)引起的裂(lie)紋擴展進行過試(shi)(shi)(shi)驗(yan)研究,為聚(ju)(ju)(ju)能(neng)爆(bao)(bao)(bao)(bao)破(po)(po)技(ji)術應(ying)(ying)用(yong)到工程做了(le)不少理(li)論分析,也(ye)取(qu)得一些(xie)進展。80年(nian)代中(zhong)期開始進行應(ying)(ying)用(yong)研究,以北(bei)京礦(kuang)業學院(yuan)為代表,著重(zhong)研究了(le)聚(ju)(ju)(ju)能(neng)藥(yao)包切割(ge)饑理(li)和應(ying)(ying)用(yong)。1987年(nian)淮(huai)南礦(kuang)業學院(yuan)取(qu)得“雙面(mian)切割(ge)器”的zhuanli,1995年(nian)又取(qu)得“大(da)理(li)石花崗巖切割(ge)技(ji)術應(ying)(ying)用(yong)”zhuanli。1991年(nian)中(zhong)國(guo)水(shui)電七局曾試(shi)(shi)(shi)圖采用(yong)硬質(zhi)紙(zhi)加工聚(ju)(ju)(ju)能(neng)藥(yao)管成形聚(ju)(ju)(ju)能(neng)藥(yao)卷做過聚(ju)(ju)(ju)能(neng)預裂(lie)爆(bao)(bao)(bao)(bao)破(po)(po)試(shi)(shi)(shi)驗(yan)研究,但終(zhong)因當時(shi)的技(ji)術及工藝水(shui)平的限(xian)制無法用(yong)于正(zheng)常施工,但是(shi)他(ta)們(men)開了(le)橢圓雙極線性聚(ju)(ju)(ju)能(neng)結構(gou)試(shi)(shi)(shi)驗(yan)的先河。雙聚(ju)(ju)(ju)能(neng)預裂(lie)與(yu)光面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)綜合技(ji)術開創輪廓控制爆(bao)(bao)(bao)(bao)破(po)(po)新時(shi)代。
水(shui)(shui)壓(ya)(ya)爆(bao)破(po)(po)(po)是(shi)在(zai)炮孔(kong)兩端填充(chong)水(shui)(shui)袋(dai),中(zhong)間(jian)裝上乳化炸,炮孔(kong)再用炮泥封死(si),炮孔(kong)間(jian)距很大,兩個炮空(kong)之間(jian)相距了(le)一(yi)米(mi)左右,是(shi)常(chang)規爆(bao)破(po)(po)(po)的(de)(de)炮孔(kong)間(jian)距的(de)(de)兩倍,這樣(yang)可以節(jie)(jie)(jie)省炮孔(kong)材(cai)料(liao),這兩個凹槽又稱為聚(ju)(ju)(ju)能(neng)槽,聚(ju)(ju)(ju)能(neng)槽非常(chang)重要,放置(zhi)的(de)(de)位置(zhi)和方向(xiang)都十分講究,一(yi)點也不能(neng)出錯,在(zai)爆(bao)破(po)(po)(po)的(de)(de)瞬間(jian),高(gao)溫高(gao)壓(ya)(ya)聚(ju)(ju)(ju)能(neng)射流立即往凹槽兩邊的(de)(de)巖石進行(xing)切割(ge),巖石如同豆腐一(yi)樣(yang)輕(qing)松被切割(ge)切割(ge)出來(lai)的(de)(de)輪廓線十分平順,效果極好,聚(ju)(ju)(ju)能(neng)水(shui)(shui)壓(ya)(ya)爆(bao)破(po)(po)(po)中(zhong)的(de)(de)水(shui)(shui)袋(dai)沒(mei)有降(jiang)(jiang)低(di)爆(bao)破(po)(po)(po)的(de)(de)效果,反(fan)而能(neng)保護隧道(dao)周邊植被,減少地質擾(rao)動,降(jiang)(jiang)低(di)煙(yan)塵,重要的(de)(de)是(shi)節(jie)(jie)(jie)省炸成本,在(zai)未(wei)來(lai)這項技術(shu)會廣泛應(ying)用于工(gong)程中(zhong),降(jiang)(jiang)低(di)施工(gong)成本。爆(bao)破(po)(po)(po)聚(ju)(ju)(ju)能(neng)管水(shui)(shui)壓(ya)(ya)光面爆(bao)破(po)(po)(po)較水(shui)(shui)壓(ya)(ya)光面爆(bao)破(po)(po)(po),在(zai)周邊眼單(dan)循環火工(gong)品使用量上節(jie)(jie)(jie)約費用8.3%,周邊眼鉆孔(kong)數量從39個下(xia)降(jiang)(jiang)為23個費用節(jie)(jie)(jie)約41%,混凝土噴射每(mei)延米(mi)節(jie)(jie)(jie)約1.37立方米(mi)。