聚(ju)(ju)能(neng)藥(yao)包破(po)(po)碎(sui)法特點(dian)是(shi):不(bu)需要(yao)打(da)眼,因而(er)不(bu)需要(yao)購買打(da)眼設備(bei)和(he)動力(li)設備(bei);施工(gong)簡單(dan),施工(gong)進度(du)比淺眼爆破(po)(po)法快安(an)全性比普(pu)通淺眼爆破(po)(po)法和(he)普(pu)通裸露藥(yao)包法好;勞動強(qiang)度(du)比淺眼爆破(po)(po)法低。制造(zao)聚(ju)(ju)能(neng)藥(yao)包所采用(yong)(yong)的(de)(de)(de)炸藥(yao)有:黑(hei)(hei)索(suo)金和(he)梯恩梯混(hun)(hun)合熔鑄型(xing);乳化(hua)油炸藥(yao)和(he)黑(hei)(hei)索(suo)金混(hun)(hun)裝型(xing)和(he)二(er)號巖石硝鉸(jiao)炸藥(yao)壓制型(xing)。根(gen)據使用(yong)(yong)的(de)(de)(de)結果證明,選用(yong)(yong)密度(du)較(jiao)大(da)和(he)爆速較(jiao)高的(de)(de)(de)炸藥(yao)制造(zao)聚(ju)(ju)能(neng)藥(yao)包能(neng)獲得較(jiao)好的(de)(de)(de)破(po)(po)碎(sui)效果。這(zhe)主(zhu)要(yao)是(shi)由于(yu)(yu)它加(jia)工(gong)簡單(dan)和(he)破(po)(po)碎(sui)能(neng)力(li)較(jiao)大(da)。在(zai)礦(kuang)山由于(yu)(yu)二(er)次(ci)破(po)(po)碎(sui)消耗的(de)(de)(de)藥(yao)包較(jiao)多(duo),而(er)且金屬藥(yao)型(xing)罩(zhao)的(de)(de)(de)加(jia)工(gong)費工(gong)又費材料,所以多(duo)不(bu)采用(yong)(yong)藥(yao)型(xing)罩(zhao)。國(guo)內生產的(de)(de)(de)一種(zhong)用(yong)(yong)于(yu)(yu)破(po)(po)碎(sui)大(da)塊(kuai)的(de)(de)(de)聚(ju)(ju)能(neng)藥(yao)包,裝置聚(ju)(ju)能(neng)藥(yao)包時,要(yao)將藥(yao)包垂直(zhi)裝在(zai)大(da)塊(kuai)的(de)(de)(de)頂面上(shang),聚(ju)(ju)能(neng)穴朝下(xia)。藥(yao)包位置應選在(zai)頂面的(de)(de)(de)幾何(he)中心或附近較(jiao)平整的(de)(de)(de)地(di)點(dian)。然后在(zai)上(shang)面覆蓋泥沙。
專用c型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。湖州c型聚能管科學合理(li)地利(li)用(yong)能(neng)(neng)(neng)(neng)(neng)源,提高(gao)能(neng)(neng)(neng)(neng)(neng)源利(li)用(yong)效(xiao)率,對(dui)節能(neng)(neng)(neng)(neng)(neng)減排也十分重(zhong)要。利(li)用(yong)聚(ju)(ju)能(neng)(neng)(neng)(neng)(neng)管(guan)兩端的(de)水平開出的(de)聚(ju)(ju)能(neng)(neng)(neng)(neng)(neng)槽產生的(de)聚(ju)(ju)能(neng)(neng)(neng)(neng)(neng)射(she)流效(xiao)應(ying)對(dui)巖石進(jin)行破(po)碎。據(ju)專家測算,由于(yu)聚(ju)(ju)能(neng)(neng)(neng)(neng)(neng)管(guan)兩端聚(ju)(ju)能(neng)(neng)(neng)(neng)(neng)槽產生的(de)聚(ju)(ju)能(neng)(neng)(neng)(neng)(neng)切割效(xiao)應(ying),其能(neng)(neng)(neng)(neng)(neng)效(xiao)比提升一個量級(ji)。
水(shui)(shui)壓(ya)(ya)爆(bao)(bao)破(po)是在(zai)炮(pao)孔(kong)(kong)(kong)兩端填充水(shui)(shui)袋(dai),中間(jian)(jian)裝上(shang)乳化炸(zha),炮(pao)孔(kong)(kong)(kong)再(zai)用(yong)(yong)炮(pao)泥封死,炮(pao)孔(kong)(kong)(kong)間(jian)(jian)距(ju)很大(da),兩個(ge)(ge)炮(pao)空之間(jian)(jian)相距(ju)了一米左右(you),是常規爆(bao)(bao)破(po)的(de)(de)炮(pao)孔(kong)(kong)(kong)間(jian)(jian)距(ju)的(de)(de)兩倍,這樣(yang)可(ke)以(yi)節(jie)省炮(pao)孔(kong)(kong)(kong)材料(liao),這兩個(ge)(ge)凹(ao)槽又稱為(wei)聚能槽,聚能槽非常重要,放(fang)置的(de)(de)位置和方向都十分(fen)講究,一點也不能出錯,在(zai)爆(bao)(bao)破(po)的(de)(de)瞬間(jian)(jian),高(gao)溫高(gao)壓(ya)(ya)聚能射流立即往凹(ao)槽兩邊(bian)(bian)的(de)(de)巖(yan)石進行切割(ge),巖(yan)石如同(tong)豆腐(fu)一樣(yang)輕(qing)松被切割(ge)切割(ge)出來的(de)(de)輪(lun)廓線十分(fen)平順,效果極(ji)好,聚能水(shui)(shui)壓(ya)(ya)爆(bao)(bao)破(po)中的(de)(de)水(shui)(shui)袋(dai)沒(mei)有(you)降低(di)爆(bao)(bao)破(po)的(de)(de)效果,反(fan)而能保護隧(sui)道周邊(bian)(bian)植被,減(jian)少地(di)質擾動(dong),降低(di)煙塵,重要的(de)(de)是節(jie)省炸(zha)成本,在(zai)未來這項(xiang)技術會廣泛(fan)應用(yong)(yong)于(yu)工程中,降低(di)施工成本。爆(bao)(bao)破(po)聚能管水(shui)(shui)壓(ya)(ya)光面(mian)爆(bao)(bao)破(po)較水(shui)(shui)壓(ya)(ya)光面(mian)爆(bao)(bao)破(po),在(zai)周邊(bian)(bian)眼單循環火(huo)工品使用(yong)(yong)量(liang)上(shang)節(jie)約(yue)費(fei)用(yong)(yong)8.3%,周邊(bian)(bian)眼鉆孔(kong)(kong)(kong)數量(liang)從39個(ge)(ge)下降為(wei)23個(ge)(ge)費(fei)用(yong)(yong)節(jie)約(yue)41%,混凝土(tu)噴射每延米節(jie)約(yue)1.37立方米。
給大家介紹下(xia)爆(bao)(bao)(bao)破聚能(neng)(neng)(neng)管的(de)(de)技術原理∶炸(zha)藥爆(bao)(bao)(bao)炸(zha)產(chan)生(sheng)的(de)(de)爆(bao)(bao)(bao)轟波通過聚能(neng)(neng)(neng)管的(de)(de)聚能(neng)(neng)(neng)槽,將炸(zha)藥的(de)(de)動(dong)能(neng)(neng)(neng)、勢能(neng)(neng)(neng)轉換成(cheng)高壓(ya)、高速、高能(neng)(neng)(neng)的(de)(de)射(she)(she)流,切割演示成(cheng)縫。射(she)(she)流在孔(kong)(kong)壁(bi)產(chan)生(sheng)射(she)(she)流壓(ya)力達7000MPa,巖石(shi)動(dong)載抗壓(ya)強度為(wei)200MPa,抗拉(la)為(wei)1/8~1/10的(de)(de)抗壓(ya)強度,相鄰兩(liang)(liang)炮(pao)孔(kong)(kong)互(hu)為(wei)鄰空面,疊加后的(de)(de)壓(ya)縮(suo)波變(bian)為(wei)稀疏波,在兩(liang)(liang)炮(pao)眼連(lian)線上使巖石(shi)結構斷裂(lie),形成(cheng)裂(lie)紋。準(zhun)靜態(tai)(tai)氣體膨脹,靜態(tai)(tai)壓(ya)力在兩(liang)(liang)炮(pao)孔(kong)(kong)最短連(lian)線兩(liang)(liang)側產(chan)生(sheng)拉(la)力使巖石(shi)裂(lie)縫進一步擴(kuo)展(zhan)。根據爆(bao)(bao)(bao)破應力集中氣刃作用原則(ze),爆(bao)(bao)(bao)破氣體沿裂(lie)縫進一步擴(kuo)大貫通,拋(pao)落巖石(shi)。
發(fa)揮巨大效力的(de)(de)(de)(de)關鍵又在其上(shang)面的(de)(de)(de)(de)“聚(ju)能(neng)(neng)(neng)(neng)槽”上(shang)。項目(mu)(mu)(mu)部(bu)目(mu)(mu)(mu)前采(cai)用的(de)(de)(de)(de)聚(ju)能(neng)(neng)(neng)(neng)管(guan)有兩(liang)(liang)個(ge)“聚(ju)能(neng)(neng)(neng)(neng)槽”,通過這兩(liang)(liang)個(ge)聚(ju)能(neng)(neng)(neng)(neng)槽的(de)(de)(de)(de)作用讓爆(bao)(bao)(bao)(bao)炸的(de)(de)(de)(de)威力在隧道中(zhong)切割出(chu)十(shi)分平順的(de)(de)(de)(de)輪廓線,的(de)(de)(de)(de)控制(zhi)了(le)爆(bao)(bao)(bao)(bao)破(po)量,有效管(guan)控了(le)超挖(wa)欠挖(wa)的(de)(de)(de)(de)現象(xiang)。為(wei)了(le)進一(yi)(yi)步嚴格(ge)控制(zhi)開(kai)挖(wa)輪廓,達到(dao)提高光面爆(bao)(bao)(bao)(bao)破(po)效果的(de)(de)(de)(de)目(mu)(mu)(mu)的(de)(de)(de)(de),并(bing)研究出(chu)了(le)聚(ju)能(neng)(neng)(neng)(neng)管(guan)上(shang)兩(liang)(liang)個(ge)“聚(ju)能(neng)(neng)(neng)(neng)槽”變為(wei)三(san)個(ge)“聚(ju)能(neng)(neng)(neng)(neng)槽”的(de)(de)(de)(de)發(fa)明設(she)計(ji),目(mu)(mu)(mu)前,該發(fa)明設(she)計(ji)已(yi)經(jing)進入到(dao)了(le)試生產階段。未(wei)來,三(san)“聚(ju)能(neng)(neng)(neng)(neng)槽”設(she)計(ji)的(de)(de)(de)(de)聚(ju)能(neng)(neng)(neng)(neng)水壓爆(bao)(bao)(bao)(bao)破(po)技術(shu)將(jiang)推動中(zhong)鐵十(shi)四局四公(gong)司(si)張吉懷鐵路項目(mu)(mu)(mu)部(bu)施工(gong)開(kai)展(zhan)邁(mai)上(shang)一(yi)(yi)個(ge)新(xin)的(de)(de)(de)(de)臺階,給項目(mu)(mu)(mu)部(bu)帶來巨大的(de)(de)(de)(de)經(jing)濟效益(yi)。工(gong)程(cheng)爆(bao)(bao)(bao)(bao)破(po)技術(shu)經(jing)過幾十(shi)年的(de)(de)(de)(de)發(fa)展(zhan),已(yi)經(jing)滲(shen)透到(dao)經(jing)濟建設(she)的(de)(de)(de)(de)眾多領域(yu),特別為(wei)中(zhong)國(guo)的(de)(de)(de)(de)鐵路建設(she)、礦(kuang)山開(kai)采(cai)、城市(shi)拆舊定向爆(bao)(bao)(bao)(bao)破(po)等做出(chu)了(le)重要貢獻。
我國于1983年制定了(le)《水(shui)工(gong)(gong)(gong)(gong)建(jian)(jian)筑(zhu)物(wu)巖行(xing)基礎開挖工(gong)(gong)(gong)(gong)程(cheng)施工(gong)(gong)(gong)(gong)技(ji)(ji)術(shu)規范(fan)》(sD 121l一(yi)1983)。自此,在(zai)水(shui)利水(shui)電(dian)建(jian)(jian)設(she)中(zhong)預(yu)裂爆破(po)(po)(po)與光(guang)面(mian)爆破(po)(po)(po)已成為(wei)必(bi)須(xu)進(jin)行(xing)的(de)(de)(de)保護邊坡(po)質量(liang)的(de)(de)(de)爆破(po)(po)(po)開挖技(ji)(ji)術(shu)措施。此后在(zai)此基礎上(shang)修訂的(de)(de)(de)《水(shui)工(gong)(gong)(gong)(gong)建(jian)(jian)筑(zhu)物(wu)巖石(shi)基礎開挖工(gong)(gong)(gong)(gong)程(cheng)施工(gong)(gong)(gong)(gong)技(ji)(ji)術(shu)規范(fan)》(SL 47一(yi)1994)以(yi)(yi)及(ji)在(zai)《水(shui)電(dian)水(shui)利爆破(po)(po)(po)工(gong)(gong)(gong)(gong)程(cheng)施工(gong)(gong)(gong)(gong)技(ji)(ji)術(shu)規范(fan)》(DL/T 5135—2001)和《水(shui)工(gong)(gong)(gong)(gong)建(jian)(jian)筑(zhu)物(wu)巖石(shi)基礎開挖工(gong)(gong)(gong)(gong)程(cheng)施工(gong)(gong)(gong)(gong)技(ji)(ji)術(shu)規范(fan)》(DL/T 5389~2007)中(zhong)預(yu)裂爆破(po)(po)(po)與光(guang)面(mian)爆破(po)(po)(po)均(jun)被編入(ru)并有(you)所改進(jin),DL/T 5135—2001正在(zai)修編為(wei)DL/T 5135—2012。鐵道部也不僅規定了(le)凡是(shi)Ⅲ級以(yi)(yi)上(shang)的(de)(de)(de)巖石(shi)邊坡(po),設(she)計(ji)(ji)邊坡(po)坡(po)度為(wei)1:0.1~1:0.75,在(zai)邊坡(po)部位的(de)(de)(de)爆破(po)(po)(po)設(she)計(ji)(ji)和施工(gong)(gong)(gong)(gong)都應采用光(guang)面(mian)爆破(po)(po)(po)或(huo)預(yu)裂爆破(po)(po)(po),并闡述了(le)光(guang)面(mian)(預(yu)裂)爆破(po)(po)(po)施工(gong)(gong)(gong)(gong)技(ji)(ji)術(shu)設(she)計(ji)(ji)的(de)(de)(de)原則和參數(shu)、安全措施,而(er)且還明(ming)確了(le)路塹邊坡(po)光(guang)面(mian)(預(yu)裂)爆破(po)(po)(po)項目質量(liang)驗(yan)收檢測數(shu)量(liang)和檢測方法。無疑該規程(cheng)的(de)(de)(de)實(shi)施,有(you)力地推(tui)動(dong)和促進(jin)了(le)光(guang)面(mian)(預(yu)裂)爆破(po)(po)(po)技(ji)(ji)術(shu)在(zai)鐵路建(jian)(jian)設(she)中(zhong)的(de)(de)(de)應用與發(fa)展。