專業深孔爆破聚能管水壓光面爆破技術,是在水壓光面爆破技術基礎上發展起來的一項新技術,其掏槽眼、輔助眼裝藥結構和爆破方式與水壓光面爆破相同,但在周邊眼中安裝專用聚能管裝置替代常規爆破藥卷和傳爆線,利用聚能管產生的粒子射流動能、高壓爆破氣體應力及“氣楔”作用,形成平整圓順的開挖輪廓面,對控制超欠挖具有良好效果,有效提升了隧道施工質量、進度和經濟效益。衢州深孔爆破聚能管科(ke)學合理地利用(yong)能(neng)源,提高能(neng)源利用(yong)效(xiao)率,對節能(neng)減排也十分(fen)重要。利用(yong)聚(ju)(ju)能(neng)管兩端(duan)的(de)水(shui)平開出的(de)聚(ju)(ju)能(neng)槽產生的(de)聚(ju)(ju)能(neng)射(she)流效(xiao)應對巖(yan)石進(jin)行破(po)碎。據專家(jia)測算(suan),由(you)于(yu)聚(ju)(ju)能(neng)管兩端(duan)聚(ju)(ju)能(neng)槽產生的(de)聚(ju)(ju)能(neng)切割效(xiao)應,其能(neng)效(xiao)比提升一個量級。
火索(suo)(suo)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法,導(dao)(dao)(dao)(dao)(dao)火索(suo)(suo)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法是利用(yong)(yong)導(dao)(dao)(dao)(dao)(dao)火索(suo)(suo)傳遞火焰(yan)點燃(ran)火雷(lei)管(guan)進而起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)炸(zha)藥(yao)。這(zhe)種起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法所需的(de)(de)(de)(de)材料(liao)有:導(dao)(dao)(dao)(dao)(dao)火索(suo)(suo)、火雷(lei)管(guan)和(he)點火材料(liao)。導(dao)(dao)(dao)(dao)(dao)火索(suo)(suo)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法操作簡單(dan)、靈活,使用(yong)(yong)方(fang)便,成(cheng)本(ben)較低,廣泛應用(yong)(yong)于小型(xing)爆(bao)(bao)(bao)破和(he)掘進。由于導(dao)(dao)(dao)(dao)(dao)火索(suo)(suo)的(de)(de)(de)(de)速燃(ran)、緩燃(ran)等弊病,在爆(bao)(bao)(bao)破中事(shi)故(gu)所占比重最大。不能多處裝藥(yao)同時(shi)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)。導(dao)(dao)(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法,用(yong)(yong)導(dao)(dao)(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)直接(jie)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)炸(zha)藥(yao)包(bao)的(de)(de)(de)(de)方(fang)法叫導(dao)(dao)(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法。先(xian)用(yong)(yong)雷(lei)管(guan)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)導(dao)(dao)(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo),當導(dao)(dao)(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)的(de)(de)(de)(de)爆(bao)(bao)(bao)轟波傳至炸(zha)藥(yao)包(bao)時(shi),將(jiang)(jiang)炸(zha)藥(yao)引爆(bao)(bao)(bao)。在需要延時(shi)分段起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)的(de)(de)(de)(de)地方(fang),將(jiang)(jiang)導(dao)(dao)(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)中接(jie)入繼爆(bao)(bao)(bao)管(guan),就能達到導(dao)(dao)(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)毫(hao)秒爆(bao)(bao)(bao)破的(de)(de)(de)(de)目的(de)(de)(de)(de)。這(zhe)種爆(bao)(bao)(bao)破法所需起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)材料(liao)有:雷(lei)管(guan)、導(dao)(dao)(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)和(he)繼爆(bao)(bao)(bao)管(guan)等。導(dao)(dao)(dao)(dao)(dao)爆(bao)(bao)(bao)索(suo)(suo)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)網(wang)路常(chang)用(yong)(yong)的(de)(de)(de)(de)有:串聯、簇并(bing)聯、單(dan)向分段并(bing)聯和(he)雙向分段并(bing)聯等。
水(shui)壓(ya)(ya)爆(bao)破(po)(po)(po)是在炮(pao)(pao)孔兩(liang)端填充水(shui)袋,中間(jian)裝上乳化炸,炮(pao)(pao)孔再用(yong)(yong)炮(pao)(pao)泥封死,炮(pao)(pao)孔間(jian)距(ju)很大,兩(liang)個炮(pao)(pao)空之(zhi)間(jian)相距(ju)了一米左右,是常(chang)規(gui)爆(bao)破(po)(po)(po)的(de)(de)炮(pao)(pao)孔間(jian)距(ju)的(de)(de)兩(liang)倍(bei),這樣可(ke)以節省炮(pao)(pao)孔材(cai)料,這兩(liang)個凹(ao)(ao)槽又(you)稱為聚能(neng)(neng)槽,聚能(neng)(neng)槽非常(chang)重(zhong)要,放置(zhi)的(de)(de)位置(zhi)和方向都十分講究,一點也不能(neng)(neng)出錯,在爆(bao)破(po)(po)(po)的(de)(de)瞬間(jian),高溫高壓(ya)(ya)聚能(neng)(neng)射流立即往凹(ao)(ao)槽兩(liang)邊的(de)(de)巖石進行切割,巖石如同豆腐一樣輕松被(bei)切割切割出來的(de)(de)輪廓線十分平順,效(xiao)果(guo)極(ji)好,聚能(neng)(neng)水(shui)壓(ya)(ya)爆(bao)破(po)(po)(po)中的(de)(de)水(shui)袋沒有降低(di)爆(bao)破(po)(po)(po)的(de)(de)效(xiao)果(guo),反(fan)而能(neng)(neng)保護隧道周(zhou)(zhou)邊植被(bei),減(jian)少(shao)地(di)質擾(rao)動,降低(di)煙塵,重(zhong)要的(de)(de)是節省炸成本,在未來這項技術會廣泛應(ying)用(yong)(yong)于(yu)工(gong)程中,降低(di)施工(gong)成本。爆(bao)破(po)(po)(po)聚能(neng)(neng)管水(shui)壓(ya)(ya)光面爆(bao)破(po)(po)(po)較水(shui)壓(ya)(ya)光面爆(bao)破(po)(po)(po),在周(zhou)(zhou)邊眼單循環火工(gong)品使用(yong)(yong)量上節約(yue)費用(yong)(yong)8.3%,周(zhou)(zhou)邊眼鉆孔數量從39個下(xia)降為23個費用(yong)(yong)節約(yue)41%,混凝(ning)土噴射每延米節約(yue)1.37立方米。
聚(ju)能(neng)(neng)(neng)包(bao)由炸(zha)(zha)、形(xing)(xing)(xing)罩(zhao)(zhao)(zhao)(zhao)(zhao)、隔板、殼體、引信和(he)(he)支架等部分組(zu)成(cheng),其(qi)(qi)(qi)作用(yong)(yong)及對(dui)(dui)聚(ju)能(neng)(neng)(neng)包(bao)威力的(de)(de)(de)影響分述如下。1.炸(zha)(zha),炸(zha)(zha)是聚(ju)能(neng)(neng)(neng)管爆(bao)(bao)破的(de)(de)(de)能(neng)(neng)(neng)源,炸(zha)(zha)的(de)(de)(de)爆(bao)(bao)壓越大,聚(ju)能(neng)(neng)(neng)彈威力越大;為得到(dao)高(gao)(gao)爆(bao)(bao)壓,需高(gao)(gao)爆(bao)(bao)速、高(gao)(gao)密度(du)的(de)(de)(de)炸(zha)(zha)。常用(yong)(yong)炸(zha)(zha)有梯(ti)恩梯(ti)、8321炸(zha)(zha)等,裝方法有熔鑄(zhu),塑裝和(he)(he)壓裝多種(zhong)。2.型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao)(zhao)(zhao),型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao)(zhao)(zhao)的(de)(de)(de)作用(yong)(yong)是把(ba)炸(zha)(zha)的(de)(de)(de)爆(bao)(bao)炸(zha)(zha)能(neng)(neng)(neng)轉化(hua)成(cheng)罩(zhao)(zhao)(zhao)(zhao)(zhao)體材料(liao)的(de)(de)(de)射流動能(neng)(neng)(neng),從而提高(gao)(gao)其(qi)(qi)(qi)穿透和(he)(he)切割(ge)能(neng)(neng)(neng)力。型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao)(zhao)(zhao)的(de)(de)(de)材料(liao)必須滿足四(si)點要求,即可壓縮性小、密度(du)高(gao)(gao)、塑性和(he)(he)延展性好,在形(xing)(xing)(xing)成(cheng)射流中(zhong)不汽化(hua)。大量試驗證明,用(yong)(yong)紫銅制(zhi)作型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao)(zhao)(zhao)效果好,其(qi)(qi)(qi)次為鑄(zhu)鐵、鋼和(he)(he)陶瓷。型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao)(zhao)(zhao)的(de)(de)(de)形(xing)(xing)(xing)狀多種(zhong)多樣(yang),主(zhu)要有軸(zhou)對(dui)(dui)稱(cheng)型(xing)(xing)(xing)(xing),如圓錐形(xing)(xing)(xing)、半球(qiu)形(xing)(xing)(xing)、拋物線形(xing)(xing)(xing)和(he)(he)喇(la)叭(ba)形(xing)(xing)(xing)等;面(mian)對(dui)(dui)稱(cheng)型(xing)(xing)(xing)(xing),常見的(de)(de)(de)有用(yong)(yong)于切割(ge)屬板材的(de)(de)(de)直線形(xing)(xing)(xing)和(he)(he)用(yong)(yong)于切割(ge)管材的(de)(de)(de)環形(xing)(xing)(xing)聚(ju)能(neng)(neng)(neng)罩(zhao)(zhao)(zhao)(zhao)(zhao)兩種(zhong);中(zhong)心(xin)(xin)對(dui)(dui)稱(cheng)型(xing)(xing)(xing)(xing),這種(zhong)球(qiu)形(xing)(xing)(xing)聚(ju)能(neng)(neng)(neng)包(bao),中(zhong)心(xin)(xin)有球(qiu)形(xing)(xing)(xing)空腔和(he)(he)球(qiu)形(xing)(xing)(xing)罩(zhao)(zhao)(zhao)(zhao)(zhao),球(qiu)形(xing)(xing)(xing)罩(zhao)(zhao)(zhao)(zhao)(zhao)外敷設炸(zha)(zha),若能(neng)(neng)(neng)在瞬間同(tong)時起(qi)爆(bao)(bao),可在空腔中(zhong)心(xin)(xin)點獲得極大的(de)(de)(de)能(neng)(neng)(neng)量集中(zhong)。在工程(cheng)中(zhong)常用(yong)(yong)的(de)(de)(de)是軸(zhou)對(dui)(dui)稱(cheng)型(xing)(xing)(xing)(xing)和(he)(he)面(mian)對(dui)(dui)稱(cheng)型(xing)(xing)(xing)(xing)兩類型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao)(zhao)(zhao)。
預裂(lie)與(yu)光(guang)面(mian)(mian)爆(bao)(bao)(bao)破(po)(po)技術的(de)歷史(shi)與(yu)現狀(zhuang):預裂(lie)爆(bao)(bao)(bao)破(po)(po)是沿設(she)(she)計開(kai)挖(wa)(wa)邊(bian)(bian)界(jie)布(bu)置密(mi)集炮孔,采取不(bu)耦合(he)裝(zhuang)藥或裝(zhuang)填低(di)威(wei)力(li)炸藥,在(zai)主(zhu)爆(bao)(bao)(bao)區(qu)之(zhi)前起爆(bao)(bao)(bao),從而在(zai)爆(bao)(bao)(bao)區(qu)與(yu)保留區(qu)之(zhi)間形(xing)成(cheng)(cheng)預裂(lie)縫(feng),以減弱主(zhu)爆(bao)(bao)(bao)破(po)(po)對保留巖體的(de)破(po)(po)壞并形(xing)成(cheng)(cheng)平整輪廓(kuo)面(mian)(mian)的(de)爆(bao)(bao)(bao)破(po)(po)作(zuo)業(ye)。光(guang)面(mian)(mian)爆(bao)(bao)(bao)破(po)(po)是沿設(she)(she)計開(kai)挖(wa)(wa)邊(bian)(bian)界(jie)布(bu)設(she)(she)密(mi)集炮孔,采用(yong)不(bu)耦合(he)裝(zhuang)藥或裝(zhuang)填低(di)威(wei)力(li)炸藥,在(zai)主(zhu)爆(bao)(bao)(bao)區(qu)爆(bao)(bao)(bao)破(po)(po)之(zhi)后(hou)起爆(bao)(bao)(bao)的(de)以形(xing)成(cheng)(cheng)平整的(de)開(kai)挖(wa)(wa)輪廓(kuo)面(mian)(mian)的(de)爆(bao)(bao)(bao)破(po)(po)作(zuo)業(ye)。爆(bao)(bao)(bao)破(po)(po)技術的(de)發展是先出現光(guang)面(mian)(mian)爆(bao)(bao)(bao)破(po)(po),然后(hou)衍生發展為預裂(lie)爆(bao)(bao)(bao)破(po)(po)。聚能管(guan)國(guo)內歷史(shi)與(yu)現狀(zhuang),我國(guo)于(yu)1964~1965年(nian)在(zai)湖北陸水水電站施工(gong)中(zhong)做過淺孔預裂(lie)爆(bao)(bao)(bao)破(po)(po)試驗,1965年(nian)鐵(tie)道部(bu)門在(zai)成(cheng)(cheng)昆鐵(tie)路建設(she)(she)中(zhong)開(kai)始試驗光(guang)面(mian)(mian)爆(bao)(bao)(bao)破(po)(po),1977年(nian)在(zai)西延(yan)線張家(jia)船工(gong)點(dian),全(quan)長近200m的(de)2000m2路塹邊(bian)(bian)坡全(quan)部(bu)采用(yong)光(guang)面(mian)(mian)爆(bao)(bao)(bao)破(po)(po),爆(bao)(bao)(bao)破(po)(po)后(hou)邊(bian)(bian)坡平整穩(wen)定,殘留的(de)半孔清晰可見(jian),是鐵(tie)路建設(she)(she)中(zhong)采用(yong)路塹光(guang)面(mian)(mian)爆(bao)(bao)(bao)破(po)(po)。