我國20世紀60年(nian)代利(li)用(yong)斷裂力學對巖石損傷引起的(de)裂紋擴展(zhan)進(jin)行(xing)(xing)過試(shi)驗(yan)(yan)研究(jiu),為聚(ju)能(neng)(neng)(neng)(neng)爆(bao)(bao)破(po)技(ji)(ji)術應(ying)用(yong)到(dao)工(gong)程做了不少理(li)(li)(li)論分析(xi),也(ye)取(qu)得(de)一些(xie)進(jin)展(zhan)。80年(nian)代中(zhong)期(qi)開始進(jin)行(xing)(xing)應(ying)用(yong)研究(jiu),以北京礦(kuang)(kuang)業學院為代表,著(zhu)重研究(jiu)了聚(ju)能(neng)(neng)(neng)(neng)藥(yao)(yao)包切(qie)(qie)(qie)割饑理(li)(li)(li)和應(ying)用(yong)。1987年(nian)淮(huai)南礦(kuang)(kuang)業學院取(qu)得(de)“雙面切(qie)(qie)(qie)割器”的(de)zhuanli,1995年(nian)又(you)取(qu)得(de)“大理(li)(li)(li)石花(hua)崗巖切(qie)(qie)(qie)割技(ji)(ji)術應(ying)用(yong)”zhuanli。1991年(nian)中(zhong)國水(shui)電(dian)七局曾試(shi)圖采用(yong)硬(ying)質紙加工(gong)聚(ju)能(neng)(neng)(neng)(neng)藥(yao)(yao)管成(cheng)形聚(ju)能(neng)(neng)(neng)(neng)藥(yao)(yao)卷做過聚(ju)能(neng)(neng)(neng)(neng)預裂爆(bao)(bao)破(po)試(shi)驗(yan)(yan)研究(jiu),但終因(yin)當時(shi)的(de)技(ji)(ji)術及工(gong)藝水(shui)平的(de)限制無法用(yong)于正常施工(gong),但是他們(men)開了橢圓雙極(ji)線(xian)性聚(ju)能(neng)(neng)(neng)(neng)結(jie)構(gou)試(shi)驗(yan)(yan)的(de)先(xian)河。雙聚(ju)能(neng)(neng)(neng)(neng)預裂與(yu)光面爆(bao)(bao)破(po)綜(zong)合技(ji)(ji)術開創輪(lun)廓控制爆(bao)(bao)破(po)新時(shi)代。
專用多向聚能管是將炸藥裝在聚能管內,兩頭均放置了水袋,聚能管爆炸產生的高溫高壓射流,讓水袋產生“水楔”效應,使圍巖裂縫加劇延伸擴展。它是在水壓光面爆破基礎上發展起來的一項新技術,區別只是在周邊眼中安裝專用線性聚能藥管替代常規爆破藥卷和傳爆線,只要做到七大關鍵環節:水袋挺拔飽滿、炮泥軟硬適中、水袋裝填到底、炮泥回填到口、木棍逐節搗固、水藥緊密相連、槽面必須平行,就能對控制超欠挖起到良好效果。多向聚能管價格在推(tui)廣水壓爆(bao)破的(de)(de)基礎上,去年(nian)9月,水壓聚(ju)能爆(bao)破的(de)(de)成(cheng)果上,今年(nian)更為(wei)深入(ru)地在興泉鐵路(lu)大嶺隧道(dao)、牡佳鐵路(lu)麻山隧道(dao)采(cai)用了(le)此項技術,積(ji)累了(le)成(cheng)功經驗。
施工因其(qi)復(fu)雜性(xing)(xing)、專(zhuan)(zhuan)業(ye)性(xing)(xing)、危(wei)險性(xing)(xing),稍(shao)有不(bu)(bu)慎,將對人民的(de)(de)(de)生(sheng)命財(cai)產(chan)安(an)全造成(cheng)不(bu)(bu)可估(gu)量的(de)(de)(de)損失,例如廣東宏大(da)寧夏“10.16”、山東保(bao)利“5.20”等(deng)重大(da)安(an)全事故(gu)。因此,相較(jiao)其(qi)他行(xing)業(ye),國家出臺(tai)的(de)(de)(de)相關法律(lv)法規(gui)多、專(zhuan)(zhuan)、嚴,從爆(bao)(bao)(bao)破材料(liao)(liao)(炸藥、雷管、導(dao)(dao)爆(bao)(bao)(bao)索?管?及相關材料(liao)(liao))的(de)(de)(de)生(sheng)產(chan)、購進(jin)、運輸、儲存、發放(fang)、布網、連接、起(qi)爆(bao)(bao)(bao)、排爆(bao)(bao)(bao)等(deng)一(yi)系列程序均有嚴格(ge)的(de)(de)(de)法律(lv)規(gui)定和(he)科(ke)學(xue)的(de)(de)(de)操作規(gui)程,并且(qie)相關從業(ye)單位和(he)人員(yuan)均應取(qu)得相應資質(zhi)。做為各(ge)類爆(bao)(bao)(bao)破中不(bu)(bu)可或缺(que)的(de)(de)(de)一(yi)種導(dao)(dao)線(xian),特(te)別不(bu)(bu)同(tong)于一(yi)般(ban)的(de)(de)(de)電(dian)(dian)線(xian)電(dian)(dian)纜,其(qi)質(zhi)量要求(qiu)及各(ge)項技術參數(shu)也與普通電(dian)(dian)線(xian)電(dian)(dian)纜不(bu)(bu)同(tong)。部分家庭作坊式的(de)(de)(de)電(dian)(dian)線(xian)電(dian)(dian)纜廠無(wu)科(ke)學(xue)的(de)(de)(de)生(sheng)產(chan)工藝(yi)、無(wu)基本(ben)的(de)(de)(de)檢(jian)測(ce)設(she)備、無(wu)專(zhuan)(zhuan)業(ye)的(de)(de)(de)技術人員(yuan),甚至不(bu)(bu)知道(dao)爆(bao)(bao)(bao)破線(xian)的(de)(de)(de)質(zhi)量要求(qiu)和(he)技術參數(shu),更(geng)不(bu)(bu)可能制訂自己的(de)(de)(de)企業(ye)標準,僅憑簡陋的(de)(de)(de)設(she)備、以粗(cu)糙(cao)的(de)(de)(de)模仿進(jin)行(xing)生(sheng)產(chan)經(jing)營(ying)活動,致(zhi)使市場充斥著(zhu)假冒偽劣產(chan)品,導(dao)(dao)致(zhi)爆(bao)(bao)(bao)破中提前或延(yan)遲起(qi)爆(bao)(bao)(bao)、盲炮增加且(qie)強制排爆(bao)(bao)(bao)困難,給人身(shen)安(an)全和(he)財(cai)產(chan)以及正常的(de)(de)(de)生(sheng)產(chan)經(jing)營(ying)活動造成(cheng)了不(bu)(bu)可估(gu)量的(de)(de)(de)損失。
聚(ju)能(neng)(neng)包(bao)由炸(zha)(zha)、形(xing)(xing)(xing)(xing)罩(zhao)(zhao)、隔板、殼體(ti)、引信和(he)支(zhi)架等部(bu)分組成,其作(zuo)用(yong)(yong)(yong)及對(dui)聚(ju)能(neng)(neng)包(bao)威力(li)的(de)(de)(de)(de)(de)影響分述(shu)如(ru)下。1.炸(zha)(zha),炸(zha)(zha)是聚(ju)能(neng)(neng)管爆(bao)破的(de)(de)(de)(de)(de)能(neng)(neng)源(yuan),炸(zha)(zha)的(de)(de)(de)(de)(de)爆(bao)壓(ya)越(yue)大(da),聚(ju)能(neng)(neng)彈(dan)威力(li)越(yue)大(da);為得到高(gao)爆(bao)壓(ya),需高(gao)爆(bao)速、高(gao)密(mi)度(du)的(de)(de)(de)(de)(de)炸(zha)(zha)。常(chang)(chang)用(yong)(yong)(yong)炸(zha)(zha)有(you)(you)梯(ti)恩梯(ti)、8321炸(zha)(zha)等,裝(zhuang)方法有(you)(you)熔鑄,塑裝(zhuang)和(he)壓(ya)裝(zhuang)多(duo)種(zhong)。2.型(xing)罩(zhao)(zhao),型(xing)罩(zhao)(zhao)的(de)(de)(de)(de)(de)作(zuo)用(yong)(yong)(yong)是把炸(zha)(zha)的(de)(de)(de)(de)(de)爆(bao)炸(zha)(zha)能(neng)(neng)轉化成罩(zhao)(zhao)體(ti)材(cai)料(liao)的(de)(de)(de)(de)(de)射流動(dong)能(neng)(neng),從(cong)而(er)提(ti)高(gao)其穿透和(he)切割(ge)能(neng)(neng)力(li)。型(xing)罩(zhao)(zhao)的(de)(de)(de)(de)(de)材(cai)料(liao)必須滿足四點要求(qiu),即可(ke)壓(ya)縮性小(xiao)、密(mi)度(du)高(gao)、塑性和(he)延展(zhan)性好(hao),在形(xing)(xing)(xing)(xing)成射流中(zhong)(zhong)(zhong)(zhong)不汽化。大(da)量試驗證(zheng)明,用(yong)(yong)(yong)紫銅制作(zuo)型(xing)罩(zhao)(zhao)效果好(hao),其次為鑄鐵、鋼和(he)陶瓷。型(xing)罩(zhao)(zhao)的(de)(de)(de)(de)(de)形(xing)(xing)(xing)(xing)狀(zhuang)多(duo)種(zhong)多(duo)樣(yang),主要有(you)(you)軸(zhou)對(dui)稱(cheng)型(xing),如(ru)圓錐(zhui)形(xing)(xing)(xing)(xing)、半球(qiu)(qiu)形(xing)(xing)(xing)(xing)、拋物(wu)線(xian)形(xing)(xing)(xing)(xing)和(he)喇叭形(xing)(xing)(xing)(xing)等;面(mian)對(dui)稱(cheng)型(xing),常(chang)(chang)見的(de)(de)(de)(de)(de)有(you)(you)用(yong)(yong)(yong)于(yu)切割(ge)屬板材(cai)的(de)(de)(de)(de)(de)直(zhi)線(xian)形(xing)(xing)(xing)(xing)和(he)用(yong)(yong)(yong)于(yu)切割(ge)管材(cai)的(de)(de)(de)(de)(de)環形(xing)(xing)(xing)(xing)聚(ju)能(neng)(neng)罩(zhao)(zhao)兩種(zhong);中(zhong)(zhong)(zhong)(zhong)心對(dui)稱(cheng)型(xing),這種(zhong)球(qiu)(qiu)形(xing)(xing)(xing)(xing)聚(ju)能(neng)(neng)包(bao),中(zhong)(zhong)(zhong)(zhong)心有(you)(you)球(qiu)(qiu)形(xing)(xing)(xing)(xing)空腔和(he)球(qiu)(qiu)形(xing)(xing)(xing)(xing)罩(zhao)(zhao),球(qiu)(qiu)形(xing)(xing)(xing)(xing)罩(zhao)(zhao)外(wai)敷設炸(zha)(zha),若能(neng)(neng)在瞬間同時起爆(bao),可(ke)在空腔中(zhong)(zhong)(zhong)(zhong)心點獲(huo)得極大(da)的(de)(de)(de)(de)(de)能(neng)(neng)量集(ji)中(zhong)(zhong)(zhong)(zhong)。在工(gong)程(cheng)中(zhong)(zhong)(zhong)(zhong)常(chang)(chang)用(yong)(yong)(yong)的(de)(de)(de)(de)(de)是軸(zhou)對(dui)稱(cheng)型(xing)和(he)面(mian)對(dui)稱(cheng)型(xing)兩類(lei)型(xing)罩(zhao)(zhao)。