各(ge)種爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)、爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)器(qi)材(cai)銷毀以及爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)器(qi)材(cai)意外爆(bao)(bao)(bao)(bao)炸(zha)時(shi),爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)源(yuan)與人員(yuan)和其(qi)他(ta)保(bao)護(hu)對(dui)象(xiang)(xiang)之(zhi)間(jian)的(de)(de)(de)安(an)(an)全(quan)(quan)(quan)距(ju)離(li)(li)(li)(li)(li)稱為(wei)(wei)爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)安(an)(an)全(quan)(quan)(quan)距(ju)離(li)(li)(li)(li)(li)。爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)安(an)(an)全(quan)(quan)(quan)距(ju)離(li)(li)(li)(li)(li)應(ying)(ying)(ying)取(qu)各(ge)種爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)效應(ying)(ying)(ying)(地(di)震(zhen)、沖擊(ji)波、飛(fei)石(shi)、有毒氣體(ti)(ti)等)分別(bie)核定的(de)(de)(de)大值。爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)時(shi),必(bi)然產生爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)地(di)震(zhen)、空氣沖擊(ji)波、碎(sui)石(shi)飛(fei)散(san)及有害(hai)(hai)氣體(ti)(ti),因此,爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)設計(ji)時(shi)必(bi)須確定爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)危害(hai)(hai)范圍,并(bing)確定爆(bao)(bao)(bao)(bao)點到附近人員(yuan)、設備、建(jian)筑物(wu)及井巷等的(de)(de)(de)安(an)(an)全(quan)(quan)(quan),這一段距(ju)離(li)(li)(li)(li)(li)就稱為(wei)(wei)爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)安(an)(an)全(quan)(quan)(quan)距(ju)離(li)(li)(li)(li)(li)。如(ru)何控制好這段距(ju)離(li)(li)(li)(li)(li)就顯的(de)(de)(de)尤為(wei)(wei)重(zhong)要。為(wei)(wei)保(bao)證(zheng)爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)安(an)(an)全(quan)(quan)(quan),爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)地(di)點與人員(yuan)或(huo)其(qi)他(ta)應(ying)(ying)(ying)保(bao)護(hu)對(dui)象(xiang)(xiang)之(zhi)間(jian)必(bi)須保(bao)持短(duan)的(de)(de)(de)相隔長(chang)度。爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)有害(hai)(hai)效應(ying)(ying)(ying)隨距(ju)離(li)(li)(li)(li)(li)的(de)(de)(de)增加(jia)有規律地(di)衰減,用距(ju)離(li)(li)(li)(li)(li)作為(wei)(wei)安(an)(an)全(quan)(quan)(quan)尺度可(ke)限定爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)有害(hai)(hai)效應(ying)(ying)(ying)在允許限度之(zhi)內(nei)。中國《爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)安(an)(an)全(quan)(quan)(quan)規程》規定了(le)爆(bao)(bao)(bao)(bao)破(po)(po)(po)(po)地(di)震(zhen)安(an)(an)全(quan)(quan)(quan)距(ju)離(li)(li)(li)(li)(li),個別(bie)飛(fei)散(san)物(wu)安(an)(an)全(quan)(quan)(quan)距(ju)離(li)(li)(li)(li)(li),以及爆(bao)(bao)(bao)(bao)炸(zha)沖擊(ji)波的(de)(de)(de)安(an)(an)全(quan)(quan)(quan)距(ju)離(li)(li)(li)(li)(li)。
采用一種抗(kang)靜電阻(zu)燃的特種塑料(liao)管、異形雙槽聚能(neng)管,根據炮眼(yan)(yan)深度可長可短(duan)。是兩(liang)個相似(si)半(ban)壁(bi)管組成,半(ban)壁(bi)管中央有(you)(you)個凹進去的槽叫做'聚能(neng)槽",使(shi)用聚能(neng)管光面爆(bao)(bao)(bao)破成型效(xiao)(xiao)果好(hao),開(kai)挖輪廓線平(ping)順(shun)整齊,圍(wei)巖擾動減(jian)(jian)(jian)少(shao)、超欠挖明(ming)顯改(gai)善,有(you)(you)利于(yu)支護工(gong)序施(shi)(shi)工(gong),同時混凝土(tu)回填(tian)成本(ben)大為降低。鑿孔(kong)(kong)率減(jian)(jian)(jian)少(shao)30%,大大降低了爆(bao)(bao)(bao)破作(zuo)業工(gong)班的勞(lao)動量(liang):鉆孔(kong)(kong)縮短(duan)30分鐘、少(shao)打眼(yan)(yan)、出渣量(liang)減(jian)(jian)(jian)少(shao),降低了材(cai)料(liao)成本(ben)、減(jian)(jian)(jian)少(shao)工(gong)時消(xiao)耗、勞(lao)動效(xiao)(xiao)率明(ming)顯提(ti)(ti)高,周邊眼(yan)(yan)爆(bao)(bao)(bao)破成本(ben)降低30%以(yi)(yi)上(shang),半(ban)眼(yan)(yan)痕保留率高達85%以(yi)(yi)上(shang)。pvc爆(bao)(bao)(bao)破聚能(neng)管主要(yao)應用于(yu)隧(sui)道、煤礦(kuang)、鐵礦(kuang)等需要(yao)進行光面爆(bao)(bao)(bao)破施(shi)(shi)工(gong)的工(gong)程。采用聚能(neng)管的光面爆(bao)(bao)(bao)破可減(jian)(jian)(jian)少(shao)鉆孔(kong)(kong),擴大孔(kong)(kong)距,減(jian)(jian)(jian)少(shao)導爆(bao)(bao)(bao)管用量(liang),減(jian)(jian)(jian)少(shao)超挖,減(jian)(jian)(jian)少(shao)噴漿,提(ti)(ti)高半(ban)孔(kong)(kong)率,既(ji)節省(sheng)了成本(ben)又提(ti)(ti)高了施(shi)(shi)工(gong)效(xiao)(xiao)率。
的(de)(de)軍(jun)(jun)事應用(yong)(yong):聚能(neng)(neng)爆(bao)破(po)技(ji)術,早在(zai)(zai)二次世界大(da)戰(zhan)期間就在(zai)(zai)軍(jun)(jun)事方面(mian)廣泛(fan)應用(yong)(yong)。國(guo)內在(zai)(zai)聚能(neng)(neng)破(po)甲技(ji)術如大(da)錐角(jiao)反艦導彈(dan)戰(zhan)斗(dou)部(bu)和(he)大(da)錐角(jiao)反坦克地雷(lei)以及敏感彈(dan)戰(zhan)斗(dou)部(bu)等方面(mian)取得了(le)較(jiao)為快速的(de)(de)發展,我國(guo)20世紀60年代打破(po)國(guo)外技(ji)術封鎖獨立自主研發成功原(yuan)子彈(dan)就是(shi)得力(li)于(yu)聚能(neng)(neng)爆(bao)破(po)技(ji)術轟擊(ji)核裝置而引爆(bao)原(yuan)子彈(dan)。的(de)(de)民爆(bao)應用(yong)(yong)——切槽爆(bao)破(po)技(ji)術:聚能(neng)(neng)爆(bao)破(po)用(yong)(yong)于(yu)工程建設(she)也是(shi)20世紀60年代開始的(de)(de),首先是(shi)瑞(rui)典的(de)(de)U﹒Langefors提(ti)出孔壁切槽爆(bao)破(po)利用(yong)(yong)槽口應力(li)集中定向開裂(lie)的(de)(de)設(she)想,后經W﹒L﹒Fourney驗證(zheng)是(shi)有效的(de)(de)。70年代國(guo)外廣泛(fan)研究和(he)應用(yong)(yong)了(le)切槽爆(bao)破(po)技(ji)術。
水(shui)壓爆(bao)(bao)破(po)是在(zai)炮孔(kong)兩端填充水(shui)袋,中(zhong)間裝上乳化炸(zha),炮孔(kong)再用炮泥封(feng)死,炮孔(kong)間距很大,兩個炮空之間相距了(le)一米左右,是常規爆(bao)(bao)破(po)的炮孔(kong)間距的兩倍,這樣可以節(jie)(jie)省炮孔(kong)材料(liao),這兩個凹槽又稱為(wei)聚能(neng)槽,聚能(neng)槽非常重要(yao),放置的位置和方向都十(shi)分(fen)講究(jiu),一點(dian)也(ye)不能(neng)出錯,在(zai)爆(bao)(bao)破(po)的瞬間,高(gao)(gao)溫高(gao)(gao)壓聚能(neng)射(she)流(liu)立即往凹槽兩邊(bian)(bian)的巖石(shi)進行切割,巖石(shi)如同豆腐一樣輕松被切割切割出來(lai)的輪廓線(xian)十(shi)分(fen)平順(shun),效果極好,聚能(neng)水(shui)壓爆(bao)(bao)破(po)中(zhong)的水(shui)袋沒有(you)降(jiang)(jiang)低(di)爆(bao)(bao)破(po)的效果,反(fan)而能(neng)保護隧道周邊(bian)(bian)植被,減少地(di)質擾動(dong),降(jiang)(jiang)低(di)煙(yan)塵,重要(yao)的是節(jie)(jie)省炸(zha)成本,在(zai)未來(lai)這項技術(shu)會(hui)廣泛應用于(yu)工程中(zhong),降(jiang)(jiang)低(di)施(shi)工成本。爆(bao)(bao)破(po)聚能(neng)管水(shui)壓光面爆(bao)(bao)破(po)較水(shui)壓光面爆(bao)(bao)破(po),在(zai)周邊(bian)(bian)眼單循環火工品使用量(liang)上節(jie)(jie)約(yue)費用8.3%,周邊(bian)(bian)眼鉆孔(kong)數(shu)量(liang)從(cong)39個下降(jiang)(jiang)為(wei)23個費用節(jie)(jie)約(yue)41%,混凝土噴射(she)每延米節(jie)(jie)約(yue)1.37立方米。
我國于1983年制定了《水工建筑物巖行基礎開挖工程施工技術規范》(sD 121l一1983)。自此,礦用型聚能管廠家在水利水電建設中預裂爆破與光面爆破已成為必須進行的保護邊坡質量的爆破開挖技術措施。此后在此基礎上修訂的《水工建筑物巖石基礎開挖工程施工技術規范》(SL 47一1994)以及在《水電水利爆破工程施工技術規范》(DL/T 5135—2001)和《水工建筑物巖石基礎開挖工程施工技術規范》(DL/T 5389~2007)中預裂爆破與光面爆破均被編入并有所改進,DL/T 5135—2001正在修編為DL/T 5135—2012。鐵道部也不僅規定了凡是Ⅲ級以上的巖石邊坡,設計邊坡坡度為1:0.1~1:0.75,專用礦用型聚能管在(zai)邊坡部位的爆破設(she)計和施工(gong)都應采用光(guang)面(mian)爆破或預(yu)裂(lie)爆破,并闡述了(le)光(guang)面(mian)(預(yu)裂(lie))爆破施工(gong)技術設(she)計的原則和參數(shu)、安全措施,而且還明(ming)確(que)了(le)路塹(qian)邊坡光(guang)面(mian)(預(yu)裂(lie))爆破項目質量(liang)驗收(shou)檢測(ce)數(shu)量(liang)和檢測(ce)方法。無疑(yi)該(gai)規程的實施,有力地推動和促進(jin)了(le)光(guang)面(mian)(預(yu)裂(lie))爆破技術在(zai)鐵路建設(she)中的應用與發展。
水壓(ya)光(guang)面(mian)(mian)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)較(jiao)水壓(ya)光(guang)面(mian)(mian)爆(bao)(bao)(bao)(bao)(bao)破(po)(po),在周(zhou)邊(bian)眼(yan)單循環(huan)火工品使用(yong)(yong)量(liang)(liang)上節約費(fei)用(yong)(yong)8.3%,周(zhou)邊(bian)眼(yan)鉆孔數(shu)量(liang)(liang)從39個(ge)下降為23個(ge)費(fei)用(yong)(yong)節約41%,混凝土噴(pen)射每延(yan)米(mi)節約1.37立(li)方米(mi)。水壓(ya)光(guang)面(mian)(mian)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)比水壓(ya)光(guang)面(mian)(mian)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)每循環(huan)節約費(fei)用(yong)(yong)258.4元,即每延(yan)米(mi)節約76較(jiao)元,節約費(fei)用(yong)(yong)比例達32%。此外,聚(ju)(ju)能(neng)(neng)(neng)管(guan)水壓(ya)光(guang)面(mian)(mian)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)能(neng)(neng)(neng)有(you)(you)效(xiao)(xiao)(xiao)降低隧道(dao)內石渣塊度和粉塵含量(liang)(liang),還(huan)可(ke)使通風時間有(you)(you)效(xiao)(xiao)(xiao)縮短33%。聚(ju)(ju)能(neng)(neng)(neng)管(guan)光(guang)面(mian)(mian)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)工藝(yi)技術(shu)(shu)很(hen)成熟、可(ke)操作性很(hen)強、材料成本很(hen)低、施工速度很(hen)快、節能(neng)(neng)(neng)環(huan)保效(xiao)(xiao)(xiao)果很(hen)顯著、經濟(ji)效(xiao)(xiao)(xiao)益社會(hui)效(xiao)(xiao)(xiao)益很(hen)高(gao)。聚(ju)(ju)能(neng)(neng)(neng)管(guan)定向爆(bao)(bao)(bao)(bao)(bao)破(po)(po)技術(shu)(shu)是近(jin)幾年(nian)發展(zhan)(zhan)起來(lai)的(de)(de)一項掘(jue)進新技術(shu)(shu),這種爆(bao)(bao)(bao)(bao)(bao)破(po)(po)技術(shu)(shu)與傳統的(de)(de)光(guang)面(mian)(mian)爆(bao)(bao)(bao)(bao)(bao)破(po)(po)技術(shu)(shu)有(you)(you)一定的(de)(de)差(cha)別,聚(ju)(ju)能(neng)(neng)(neng)管(guan)定向爆(bao)(bao)(bao)(bao)(bao)破(po)(po)原理是在巷道(dao)周(zhou)邊(bian)眼(yan)中,將炸裝在聚(ju)(ju)能(neng)(neng)(neng)管(guan)中起爆(bao)(bao)(bao)(bao)(bao),爆(bao)(bao)(bao)(bao)(bao)破(po)(po)時利用(yong)(yong)聚(ju)(ju)能(neng)(neng)(neng)管(guan)的(de)(de)聚(ju)(ju)能(neng)(neng)(neng)作用(yong)(yong),以減少裂隙的(de)(de)數(shu)量(liang)(liang)和控(kong)制優勢裂隙的(de)(de)發展(zhan)(zhan)方向。