是將(jiang)炸(zha)藥裝在(zai)(zai)聚(ju)能(neng)管(guan)(guan)內(nei),兩(liang)頭均(jun)放置了水(shui)袋(dai),聚(ju)能(neng)管(guan)(guan)爆(bao)(bao)(bao)炸(zha)產(chan)(chan)生(sheng)的(de)高溫高壓(ya)(ya)射流,讓(rang)水(shui)袋(dai)產(chan)(chan)生(sheng)“水(shui)楔”效(xiao)應(ying),使圍(wei)巖裂縫加劇延伸擴展。它(ta)是在(zai)(zai)水(shui)壓(ya)(ya)光面(mian)爆(bao)(bao)(bao)破基(ji)礎上(shang)發(fa)展起來的(de)一(yi)項新技(ji)術,區別只(zhi)是在(zai)(zai)周邊眼(yan)中安裝專用(yong)線(xian)(xian)性聚(ju)能(neng)藥管(guan)(guan)替代常(chang)規(gui)爆(bao)(bao)(bao)破藥卷和傳爆(bao)(bao)(bao)線(xian)(xian),只(zhi)要做到(dao)七大關(guan)鍵環節(jie):水(shui)袋(dai)挺拔飽滿、炮(pao)泥軟硬適中、水(shui)袋(dai)裝填(tian)(tian)到(dao)底(di)、炮(pao)泥回填(tian)(tian)到(dao)口、木棍逐節(jie)搗固、水(shui)藥緊(jin)密相(xiang)連、槽(cao)面(mian)必須平(ping)行,就能(neng)對(dui)控制超(chao)欠挖起到(dao)良(liang)好效(xiao)果(guo)。在(zai)(zai)推廣水(shui)壓(ya)(ya)爆(bao)(bao)(bao)破的(de)基(ji)礎上(shang),去年9月(yue),水(shui)壓(ya)(ya)聚(ju)能(neng)爆(bao)(bao)(bao)破的(de)成(cheng)果(guo)上(shang),今(jin)年更為深入地(di)在(zai)(zai)興泉鐵(tie)路(lu)(lu)大嶺隧(sui)道(dao)、牡佳鐵(tie)路(lu)(lu)麻山隧(sui)道(dao)采(cai)用(yong)了此項技(ji)術,積累了成(cheng)功經驗。
深孔爆破聚能管廠家給大家介紹下爆破聚能管的技術原理∶炸藥爆炸產生的爆轟波通過聚能管的聚能槽,將炸藥的動能、勢能轉換成高壓、高速、高能的射流,切割演示成縫。專業深孔爆破聚能管射流在(zai)孔壁產(chan)生射流壓(ya)(ya)力達7000MPa,巖石(shi)(shi)動載(zai)抗壓(ya)(ya)強(qiang)度(du)為(wei)200MPa,抗拉(la)為(wei)1/8~1/10的抗壓(ya)(ya)強(qiang)度(du),相鄰(lin)兩炮(pao)孔互為(wei)鄰(lin)空面,疊加后的壓(ya)(ya)縮波變為(wei)稀疏波,在(zai)兩炮(pao)眼連線上使巖石(shi)(shi)結構斷裂,形(xing)成裂紋。準靜態(tai)氣體膨脹,靜態(tai)壓(ya)(ya)力在(zai)兩炮(pao)孔最(zui)短連線兩側產(chan)生拉(la)力使巖石(shi)(shi)裂縫進一步(bu)擴(kuo)(kuo)展(zhan)。根據(ju)爆(bao)破(po)應力集中氣刃作用原則,爆(bao)破(po)氣體沿(yan)裂縫進一步(bu)擴(kuo)(kuo)大貫通(tong),拋(pao)落巖石(shi)(shi)。
光面爆破技術優(you)勢:相對于(yu)傳統爆破工藝(yi),聚能管(guan)光面爆破比常(chang)規(gui)爆破具有以(yi)(yi)(yi)下優(you)勢∶少(shao)打眼(yan),少(shao)裝藥。節(jie)(jie)(jie)約周邊鉆(zhan)(zhan)孔(kong)(kong)量50%,總鉆(zhan)(zhan)孔(kong)(kong)進尺減(jian)少(shao)30%;節(jie)(jie)(jie)約炸藥10~20%,雷(lei)管(guan)30%。節(jie)(jie)(jie)約噴漿料15-20%。節(jie)(jie)(jie)省時間∶每循(xun)環鉆(zhan)(zhan)孔(kong)(kong)、裝藥、噴漿時間1.5-2.0小時。在安全方面利用水沙袋(dai)替代(dai)炮(pao)泥,以(yi)(yi)(yi)避免搗炮(pao)泥損毀電(dian)雷(lei)管(guan)導線,造成瞎炮(pao)。大大減(jian)少(shao)對圍(wei)巖擾動,光面效果好,巖性條(tiao)件差情況下可(ke)以(yi)(yi)(yi)大大減(jian)少(shao)超挖量,控制巷(xiang)道成型;巖性完整(zheng)無(wu)節(jie)(jie)(jie)理(li)情況下眼(yan)痕(hen)率可(ke)以(yi)(yi)(yi)達(da)到(dao)90%以(yi)(yi)(yi)上,巷(xiang)道成型好,穩定(ding)性強。布孔(kong)(kong)方式優(you)化成多排掏槽布孔(kong)(kong),單(dan)次掘(jue)進深(shen)度可(ke)以(yi)(yi)(yi)優(you)化提高(gao)10%到(dao)15%不等。由(you)于(yu)炮(pao)孔(kong)(kong)數量大大減(jian)少(shao)可(ke)以(yi)(yi)(yi)考慮一起(qi)全斷面起(qi)爆,節(jie)(jie)(jie)省放炮(pao)時間。
不(bu)成(cheng)功的(de)(de)(de)(de)事例是(shi)有(you)的(de)(de)(de)(de),如爆(bao)而不(bu)倒、實施定向爆(bao)破(po)(po)后沒(mei)有(you)按爆(bao)破(po)(po)方案(an)的(de)(de)(de)(de)方向倒塌等等。這些(xie)事例警示(shi):從爆(bao)破(po)(po)設(she)計、爆(bao)破(po)(po)器(qi)材(cai)質量、爆(bao)破(po)(po)施工(gong)(gong)到起(qi)爆(bao)網路連接等,只要有(you)一(yi)個(ge)環(huan)節出(chu)現失誤,都(dou)將影響爆(bao)破(po)(po)工(gong)(gong)程(cheng)(cheng)的(de)(de)(de)(de)效果(guo),乃至造成(cheng)嚴重的(de)(de)(de)(de)后果(guo)。爆(bao)破(po)(po)作業(ye)無論是(shi)老舊建筑物本身還是(shi)周圍環(huan)境都(dou)十分復雜,這不(bu)僅要求(qiu)認真調查爆(bao)破(po)(po)體的(de)(de)(de)(de)結構(包括施工(gong)(gong)缺陷),分析(xi)受力狀況,同時還要對采(cai)取技(ji)術措施(如預(yu)處理(li)、嵌補、支撐等)的(de)(de)(de)(de)可靠和(he)(he)安全(quan)性進行分析(xi),對可能出(chu)現的(de)(de)(de)(de)意(yi)外情況,應(ying)預(yu)先制定應(ying)急(ji)方案(an),努力避(bi)免安全(quan)事故(gu)和(he)(he)不(bu)必要的(de)(de)(de)(de)損(sun)失。工(gong)(gong)程(cheng)(cheng)的(de)(de)(de)(de)環(huan)保(bao)性越來(lai)越受到人們的(de)(de)(de)(de)關注,同時,探索無公害的(de)(de)(de)(de)拆除爆(bao)破(po)(po)技(ji)術,一(yi)直是(shi)爆(bao)破(po)(po)工(gong)(gong)作者追求(qiu)的(de)(de)(de)(de)目標。設(she)立(li)掩蔽體對物體加以保(bao)護,簡單的(de)(de)(de)(de)辦法(fa)是(shi)用草袋、竹笆一(yi)類材(cai)料覆蓋在需(xu)要保(bao)護的(de)(de)(de)(de)物體上面;對房屋和(he)(he)機(ji)器(qi)設(she)備常(chang)要在迎(ying)面和(he)(he)頂部(bu)豎立(li)排架(jia),用木板或荊笆上罩鐵絲網,抵(di)御較多的(de)(de)(de)(de)飛石和(he)(he)較強的(de)(de)(de)(de)空氣沖擊波的(de)(de)(de)(de)打擊;對某些(xie)重要工(gong)(gong)程(cheng)(cheng)的(de)(de)(de)(de)建筑物打防震孔或者用預(yu)裂爆(bao)破(po)(po)將爆(bao)破(po)(po)區(qu)和(he)(he)被保(bao)護的(de)(de)(de)(de)建筑物或工(gong)(gong)程(cheng)(cheng)設(she)施隔離開來(lai)。
水壓(ya)光面爆(bao)(bao)破(po)(po)技術(shu),是在(zai)水壓(ya)光面爆(bao)(bao)破(po)(po)技術(shu)基礎上發展起來的(de)(de)(de)一(yi)項(xiang)新(xin)技術(shu),其(qi)掏槽眼、輔(fu)助眼裝藥(yao)結構(gou)和爆(bao)(bao)破(po)(po)方式(shi)與水壓(ya)光面爆(bao)(bao)破(po)(po)相同(tong),但在(zai)周(zhou)邊(bian)眼中(zhong)安(an)裝專(zhuan)(zhuan)用(yong)(yong)(yong)聚(ju)(ju)能(neng)(neng)(neng)管裝置(zhi)替代(dai)常規爆(bao)(bao)破(po)(po)藥(yao)卷和傳(chuan)爆(bao)(bao)線,利用(yong)(yong)(yong)聚(ju)(ju)能(neng)(neng)(neng)管產生的(de)(de)(de)粒子射流動能(neng)(neng)(neng)、高壓(ya)爆(bao)(bao)破(po)(po)氣(qi)體應(ying)力及“氣(qi)楔”作用(yong)(yong)(yong),形成平(ping)整圓順的(de)(de)(de)開(kai)(kai)挖(wa)(wa)輪廓面,對控制超(chao)欠(qian)挖(wa)(wa)具(ju)有(you)良好效果,有(you)效提(ti)(ti)升(sheng)了隧道施工質量、進度(du)和經濟效益。科學合理地(di)利用(yong)(yong)(yong)能(neng)(neng)(neng)源(yuan),提(ti)(ti)高能(neng)(neng)(neng)源(yuan)利用(yong)(yong)(yong)效率,對節能(neng)(neng)(neng)減排也十分重要。利用(yong)(yong)(yong)聚(ju)(ju)能(neng)(neng)(neng)管兩端的(de)(de)(de)水平(ping)開(kai)(kai)出的(de)(de)(de)聚(ju)(ju)能(neng)(neng)(neng)槽產生的(de)(de)(de)聚(ju)(ju)能(neng)(neng)(neng)射流效應(ying)對巖石進行破(po)(po)碎。據專(zhuan)(zhuan)家測(ce)算,由于聚(ju)(ju)能(neng)(neng)(neng)管兩端聚(ju)(ju)能(neng)(neng)(neng)槽產生的(de)(de)(de)聚(ju)(ju)能(neng)(neng)(neng)切(qie)割(ge)效應(ying),其(qi)能(neng)(neng)(neng)效比(bi)提(ti)(ti)升(sheng)一(yi)個量級。
在(zai)工(gong)程爆(bao)(bao)(bao)(bao)(bao)破中,常用的(de)(de)(de)(de)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)方(fang)(fang)法有(you):電(dian)(dian)(dian)(dian)(dian)力(li)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法、導(dao)(dao)火索起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法、導(dao)(dao)爆(bao)(bao)(bao)(bao)(bao)索起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法、導(dao)(dao)爆(bao)(bao)(bao)(bao)(bao)管起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法。電(dian)(dian)(dian)(dian)(dian)力(li)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法是(shi)利用電(dian)(dian)(dian)(dian)(dian)能使雷管爆(bao)(bao)(bao)(bao)(bao)炸,進而起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)炸藥的(de)(de)(de)(de)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)芳法。它所(suo)需的(de)(de)(de)(de)器材(cai)有(you):電(dian)(dian)(dian)(dian)(dian)雷管、導(dao)(dao)線和起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)(dian)(dian)(dian)源(yuan)。電(dian)(dian)(dian)(dian)(dian)爆(bao)(bao)(bao)(bao)(bao)網路(lu)的(de)(de)(de)(de)連接形式(shi),要(yao)(yao)根(gen)據爆(bao)(bao)(bao)(bao)(bao)破方(fang)(fang)法、爆(bao)(bao)(bao)(bao)(bao)破規(gui)模、工(gong)程的(de)(de)(de)(de)重要(yao)(yao)性、所(suo)選(xuan)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)(dian)(dian)(dian)源(yuan)及(ji)其起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)能力(li)等(deng)(deng)進行選(xuan)擇,基本連接方(fang)(fang)式(shi)有(you):串(chuan)聯(lian)、并聯(lian)、串(chuan)并聯(lian)和并串(chuan)聯(lian)等(deng)(deng)。電(dian)(dian)(dian)(dian)(dian)力(li)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法具有(you)較(jiao)安全、可靠、準(zhun)確、高(gao)效等(deng)(deng)優點(dian),在(zai)國內(nei)外仍占有(you)較(jiao)大(da)比(bi)重。在(zai)大(da)、中型爆(bao)(bao)(bao)(bao)(bao)破中,主要(yao)(yao)仍是(shi)用電(dian)(dian)(dian)(dian)(dian)力(li)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)。特別是(shi)在(zai)有(you)瓦斯、礦塵爆(bao)(bao)(bao)(bao)(bao)炸的(de)(de)(de)(de)環境(jing)中,電(dian)(dian)(dian)(dian)(dian)力(li)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)是(shi)主要(yao)(yao)的(de)(de)(de)(de)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)方(fang)(fang)法。但電(dian)(dian)(dian)(dian)(dian)力(li)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)容易受(shou)各種電(dian)(dian)(dian)(dian)(dian)信號的(de)(de)(de)(de)干擾而發生早爆(bao)(bao)(bao)(bao)(bao),因此在(zai)有(you)雜散電(dian)(dian)(dian)(dian)(dian)、靜電(dian)(dian)(dian)(dian)(dian)、雷電(dian)(dian)(dian)(dian)(dian)、射頻電(dian)(dian)(dian)(dian)(dian)、高(gao)壓感(gan)應(ying)電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)環境(jing)中,不能使用普通電(dian)(dian)(dian)(dian)(dian)雷管。