水(shui)壓(ya)(ya)爆(bao)(bao)(bao)破(po)是(shi)在(zai)炮(pao)(pao)(pao)孔(kong)(kong)(kong)兩端填充(chong)水(shui)袋(dai),中(zhong)間(jian)裝上乳化炸,炮(pao)(pao)(pao)孔(kong)(kong)(kong)再用(yong)炮(pao)(pao)(pao)泥封(feng)死,炮(pao)(pao)(pao)孔(kong)(kong)(kong)間(jian)距(ju)很大,兩個(ge)炮(pao)(pao)(pao)空(kong)之間(jian)相距(ju)了一(yi)米(mi)(mi)左右,是(shi)常規(gui)爆(bao)(bao)(bao)破(po)的炮(pao)(pao)(pao)孔(kong)(kong)(kong)間(jian)距(ju)的兩倍,這樣可以節(jie)省炮(pao)(pao)(pao)孔(kong)(kong)(kong)材(cai)料(liao),這兩個(ge)凹槽又稱為聚(ju)(ju)能(neng)(neng)(neng)槽,聚(ju)(ju)能(neng)(neng)(neng)槽非常重要(yao),放(fang)置的位置和方向都十(shi)分(fen)講究,一(yi)點(dian)也不能(neng)(neng)(neng)出(chu)(chu)錯,在(zai)爆(bao)(bao)(bao)破(po)的瞬間(jian),高(gao)(gao)溫(wen)高(gao)(gao)壓(ya)(ya)聚(ju)(ju)能(neng)(neng)(neng)射流(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(yi)樣輕松(song)被切割切割出(chu)(chu)來的輪廓線十(shi)分(fen)平順,效(xiao)果極好,聚(ju)(ju)能(neng)(neng)(neng)水(shui)壓(ya)(ya)爆(bao)(bao)(bao)破(po)中(zhong)的水(shui)袋(dai)沒(mei)有降低(di)(di)爆(bao)(bao)(bao)破(po)的效(xiao)果,反而能(neng)(neng)(neng)保護隧(sui)道周(zhou)邊(bian)(bian)植(zhi)被,減少地質擾(rao)動,降低(di)(di)煙塵,重要(yao)的是(shi)節(jie)省炸成本,在(zai)未來這項(xiang)技術會廣泛應用(yong)于工(gong)程中(zhong),降低(di)(di)施工(gong)成本。爆(bao)(bao)(bao)破(po)聚(ju)(ju)能(neng)(neng)(neng)管水(shui)壓(ya)(ya)光(guang)面爆(bao)(bao)(bao)破(po)較(jiao)水(shui)壓(ya)(ya)光(guang)面爆(bao)(bao)(bao)破(po),在(zai)周(zhou)邊(bian)(bian)眼單循環火工(gong)品(pin)使用(yong)量(liang)(liang)上節(jie)約費(fei)用(yong)8.3%,周(zhou)邊(bian)(bian)眼鉆(zhan)孔(kong)(kong)(kong)數量(liang)(liang)從39個(ge)下降為23個(ge)費(fei)用(yong)節(jie)約41%,混凝(ning)土(tu)噴射每延米(mi)(mi)節(jie)約1.37立方米(mi)(mi)。
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,深孔爆破多向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,專業深孔爆破多向聚能管在(zai)(zai)邊坡(po)部位的(de)爆(bao)破(po)(po)(po)設計和施工(gong)都應采用光面(mian)(mian)爆(bao)破(po)(po)(po)或預裂爆(bao)破(po)(po)(po),并闡述了(le)光面(mian)(mian)(預裂)爆(bao)破(po)(po)(po)施工(gong)技術設計的(de)原(yuan)則和參數(shu)、安全措施,而且還(huan)明確了(le)路(lu)塹邊坡(po)光面(mian)(mian)(預裂)爆(bao)破(po)(po)(po)項目(mu)質量(liang)驗(yan)收檢測數(shu)量(liang)和檢測方法。無疑該規程的(de)實施,有力地(di)推動(dong)和促進了(le)光面(mian)(mian)(預裂)爆(bao)破(po)(po)(po)技術在(zai)(zai)鐵路(lu)建(jian)設中的(de)應用與(yu)發展。
水壓(ya)光(guang)面(mian)爆(bao)破(po)(po)(po)技術,是(shi)在(zai)水壓(ya)光(guang)面(mian)爆(bao)破(po)(po)(po)技術基礎上發展(zhan)起來(lai)的(de)(de)一(yi)項新(xin)技術,其掏槽眼(yan)、輔助(zhu)眼(yan)裝藥結構(gou)和爆(bao)破(po)(po)(po)方(fang)式與水壓(ya)光(guang)面(mian)爆(bao)破(po)(po)(po)相同,但在(zai)周邊(bian)眼(yan)中安裝專用(yong)(yong)聚能(neng)(neng)(neng)(neng)管裝置替代常規(gui)爆(bao)破(po)(po)(po)藥卷和傳爆(bao)線,利(li)用(yong)(yong)聚能(neng)(neng)(neng)(neng)管產生的(de)(de)粒子射(she)流(liu)動能(neng)(neng)(neng)(neng)、高(gao)壓(ya)爆(bao)破(po)(po)(po)氣(qi)體(ti)應(ying)力及“氣(qi)楔”作用(yong)(yong),形成平整圓順的(de)(de)開挖(wa)輪(lun)廓面(mian),對(dui)控制(zhi)超欠挖(wa)具有(you)良好效(xiao)(xiao)(xiao)果(guo),有(you)效(xiao)(xiao)(xiao)提(ti)升了(le)隧道(dao)施工質量(liang)、進度和經(jing)濟(ji)效(xiao)(xiao)(xiao)益。科學合理地利(li)用(yong)(yong)能(neng)(neng)(neng)(neng)源,提(ti)高(gao)能(neng)(neng)(neng)(neng)源利(li)用(yong)(yong)效(xiao)(xiao)(xiao)率,對(dui)節能(neng)(neng)(neng)(neng)減(jian)排也十分重要。利(li)用(yong)(yong)聚能(neng)(neng)(neng)(neng)管兩端(duan)的(de)(de)水平開出的(de)(de)聚能(neng)(neng)(neng)(neng)槽產生的(de)(de)聚能(neng)(neng)(neng)(neng)射(she)流(liu)效(xiao)(xiao)(xiao)應(ying)對(dui)巖(yan)石進行破(po)(po)(po)碎。據專家測算,由(you)于(yu)聚能(neng)(neng)(neng)(neng)管兩端(duan)聚能(neng)(neng)(neng)(neng)槽產生的(de)(de)聚能(neng)(neng)(neng)(neng)切割(ge)效(xiao)(xiao)(xiao)應(ying),其能(neng)(neng)(neng)(neng)效(xiao)(xiao)(xiao)比提(ti)升一(yi)個量(liang)級。
采用(yong)(yong)一種抗靜(jing)電(dian)阻(zu)燃的(de)特種塑料(liao)管(guan)(guan)、異形雙槽(cao)(cao)聚能管(guan)(guan),根(gen)據炮眼(yan)深度可長可短。是(shi)兩個相似半(ban)(ban)(ban)壁管(guan)(guan)組成,半(ban)(ban)(ban)壁管(guan)(guan)中央有個凹進(jin)去的(de)槽(cao)(cao)叫做'聚能槽(cao)(cao)",使用(yong)(yong)聚能管(guan)(guan)光面爆(bao)(bao)破(po)成型效果好,開挖輪廓線平(ping)順整齊,圍巖擾動減(jian)(jian)少(shao)、超(chao)欠挖明(ming)顯改(gai)善,有利于支護(hu)工(gong)序(xu)施(shi)工(gong),同(tong)時(shi)混凝土回(hui)填成本大為降(jiang)(jiang)低。鑿孔(kong)率(lv)減(jian)(jian)少(shao)30%,大大降(jiang)(jiang)低了(le)(le)爆(bao)(bao)破(po)作業(ye)工(gong)班(ban)的(de)勞(lao)動量:鉆孔(kong)縮短30分(fen)鐘(zhong)、少(shao)打眼(yan)、出渣量減(jian)(jian)少(shao),降(jiang)(jiang)低了(le)(le)材料(liao)成本、減(jian)(jian)少(shao)工(gong)時(shi)消耗、勞(lao)動效率(lv)明(ming)顯提高(gao),周邊眼(yan)爆(bao)(bao)破(po)成本降(jiang)(jiang)低30%以(yi)上,半(ban)(ban)(ban)眼(yan)痕保留率(lv)高(gao)達85%以(yi)上。pvc爆(bao)(bao)破(po)聚能管(guan)(guan)主(zhu)要應用(yong)(yong)于隧道(dao)、煤礦(kuang)、鐵礦(kuang)等需要進(jin)行光面爆(bao)(bao)破(po)施(shi)工(gong)的(de)工(gong)程。采用(yong)(yong)聚能管(guan)(guan)的(de)光面爆(bao)(bao)破(po)可減(jian)(jian)少(shao)鉆孔(kong),擴大孔(kong)距(ju),減(jian)(jian)少(shao)導(dao)爆(bao)(bao)管(guan)(guan)用(yong)(yong)量,減(jian)(jian)少(shao)超(chao)挖,減(jian)(jian)少(shao)噴漿,提高(gao)半(ban)(ban)(ban)孔(kong)率(lv),既節省(sheng)了(le)(le)成本又提高(gao)了(le)(le)施(shi)工(gong)效率(lv)。
水(shui)(shui)壓(ya)(ya)光(guang)(guang)面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)(po)技術基礎(chu)上發展起來的(de)一項(xiang)新(xin)技術,其掏(tao)槽眼(yan)、輔助(zhu)眼(yan)裝藥(yao)結(jie)構和(he)(he)爆(bao)(bao)(bao)(bao)破(po)(po)(po)方式與水(shui)(shui)壓(ya)(ya)光(guang)(guang)面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)(po)相同,但在周邊(bian)眼(yan)中安裝專用(yong)(yong)線性(xing)聚能(neng)(neng)藥(yao)管替(ti)代常規爆(bao)(bao)(bao)(bao)破(po)(po)(po)藥(yao)卷和(he)(he)傳爆(bao)(bao)(bao)(bao)線,利用(yong)(yong)線性(xing)聚能(neng)(neng)藥(yao)管產生的(de)粒子射(she)流動能(neng)(neng)、高(gao)壓(ya)(ya)爆(bao)(bao)(bao)(bao)破(po)(po)(po)氣體(ti)應力及“氣楔”作用(yong)(yong),形(xing)成平整圓順的(de)開挖輪廓面(mian),對控制(zhi)超(chao)欠挖具有良好效果,有效提升(sheng)了隧道施工質量(liang)、進度和(he)(he)經濟效益。水(shui)(shui)壓(ya)(ya)光(guang)(guang)面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)(po)較水(shui)(shui)壓(ya)(ya)光(guang)(guang)面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)(po),在周邊(bian)眼(yan)單循環火(huo)工品(pin)使用(yong)(yong)量(liang)上節(jie)(jie)(jie)(jie)約(yue)費(fei)(fei)用(yong)(yong)8.3%,周邊(bian)眼(yan)鉆孔數量(liang)從39個下降(jiang)為23個費(fei)(fei)用(yong)(yong)節(jie)(jie)(jie)(jie)約(yue)41%,混凝土噴射(she)每延米節(jie)(jie)(jie)(jie)約(yue)1.37立方米。聚能(neng)(neng)水(shui)(shui)壓(ya)(ya)光(guang)(guang)面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)(po)比水(shui)(shui)壓(ya)(ya)光(guang)(guang)面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)(po)每循環節(jie)(jie)(jie)(jie)約(yue)費(fei)(fei)用(yong)(yong)258.4元,即每延米節(jie)(jie)(jie)(jie)約(yue)76較元,節(jie)(jie)(jie)(jie)約(yue)費(fei)(fei)用(yong)(yong)比例(li)達32%。此外,聚能(neng)(neng)水(shui)(shui)壓(ya)(ya)光(guang)(guang)面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)(po)能(neng)(neng)有效降(jiang)低隧道內石(shi)渣塊度和(he)(he)粉塵含(han)量(liang),還(huan)可(ke)使通風(feng)時間有效縮短33%。
給(gei)大家介紹下爆(bao)破聚能管的(de)(de)(de)(de)技術原(yuan)理∶炸藥爆(bao)炸產生的(de)(de)(de)(de)爆(bao)轟波通過聚能管的(de)(de)(de)(de)聚能槽,將炸藥的(de)(de)(de)(de)動能、勢能轉換成(cheng)高(gao)壓(ya)、高(gao)速、高(gao)能的(de)(de)(de)(de)射流,切(qie)割(ge)演示成(cheng)縫。射流在(zai)(zai)孔(kong)壁產生射流壓(ya)力達7000MPa,巖(yan)石動載抗壓(ya)強(qiang)度為200MPa,抗拉為1/8~1/10的(de)(de)(de)(de)抗壓(ya)強(qiang)度,相鄰兩(liang)(liang)炮孔(kong)互為鄰空面,疊加后(hou)的(de)(de)(de)(de)壓(ya)縮波變(bian)為稀(xi)疏波,在(zai)(zai)兩(liang)(liang)炮眼連線上(shang)使巖(yan)石結(jie)構斷(duan)裂,形成(cheng)裂紋。準(zhun)靜態(tai)氣體膨(peng)脹,靜態(tai)壓(ya)力在(zai)(zai)兩(liang)(liang)炮孔(kong)最短連線兩(liang)(liang)側產生拉力使巖(yan)石裂縫進一步擴(kuo)展(zhan)。根(gen)據爆(bao)破應(ying)力集中氣刃作(zuo)用原(yuan)則(ze),爆(bao)破氣體沿(yan)裂縫進一步擴(kuo)大貫通,拋落(luo)巖(yan)石。