光面爆(bao)(bao)破(po)技(ji)術優勢:相對于傳統爆(bao)(bao)破(po)工藝(yi),聚(ju)能管(guan)光面爆(bao)(bao)破(po)比常規爆(bao)(bao)破(po)具(ju)有(you)以(yi)下優勢∶少(shao)(shao)打眼,少(shao)(shao)裝(zhuang)藥。節(jie)(jie)約(yue)周邊鉆(zhan)孔(kong)(kong)量50%,總(zong)鉆(zhan)孔(kong)(kong)進(jin)(jin)尺減(jian)(jian)少(shao)(shao)30%;節(jie)(jie)約(yue)炸藥10~20%,雷管(guan)30%。節(jie)(jie)約(yue)噴漿料15-20%。節(jie)(jie)省時間(jian)∶每循環鉆(zhan)孔(kong)(kong)、裝(zhuang)藥、噴漿時間(jian)1.5-2.0小時。在(zai)安全(quan)方(fang)面利用水沙袋替代炮(pao)(pao)泥,以(yi)避免搗炮(pao)(pao)泥損毀(hui)電(dian)雷管(guan)導線,造成(cheng)瞎(xia)炮(pao)(pao)。大(da)大(da)減(jian)(jian)少(shao)(shao)對圍巖(yan)擾動(dong),光面效(xiao)果好(hao),巖(yan)性條(tiao)件差情況(kuang)下可(ke)(ke)以(yi)大(da)大(da)減(jian)(jian)少(shao)(shao)超挖量,控(kong)制巷(xiang)道(dao)成(cheng)型(xing);巖(yan)性完整無節(jie)(jie)理情況(kuang)下眼痕率可(ke)(ke)以(yi)達到90%以(yi)上(shang),巷(xiang)道(dao)成(cheng)型(xing)好(hao),穩定性強(qiang)。布孔(kong)(kong)方(fang)式優化成(cheng)多排掏槽(cao)布孔(kong)(kong),單次掘進(jin)(jin)深度(du)可(ke)(ke)以(yi)優化提高10%到15%不(bu)等。由于炮(pao)(pao)孔(kong)(kong)數量大(da)大(da)減(jian)(jian)少(shao)(shao)可(ke)(ke)以(yi)考慮一起(qi)全(quan)斷面起(qi)爆(bao)(bao),節(jie)(jie)省放(fang)炮(pao)(pao)時間(jian)。
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邊坡(po)部位的(de)爆(bao)破(po)設計和施(shi)工都應(ying)采用(yong)光面(mian)爆(bao)破(po)或預(yu)裂爆(bao)破(po),并闡述了(le)光面(mian)(預(yu)裂)爆(bao)破(po)施(shi)工技術(shu)(shu)設計的(de)原(yuan)則和參數(shu)(shu)、安全措施(shi),而且還明確(que)了(le)路塹(qian)邊坡(po)光面(mian)(預(yu)裂)爆(bao)破(po)項(xiang)目質量驗收檢測數(shu)(shu)量和檢測方法。無(wu)疑該規程的(de)實(shi)施(shi),有(you)力地推動和促(cu)進了(le)光面(mian)(預(yu)裂)爆(bao)破(po)技術(shu)(shu)在鐵路建設中(zhong)的(de)應(ying)用(yong)與發展。
我(wo)國(guo)20世紀(ji)60年(nian)代利用(yong)(yong)斷裂力(li)學對巖石損(sun)傷引起的(de)(de)裂紋擴展進行過(guo)試(shi)驗研(yan)究(jiu),為聚(ju)(ju)能(neng)爆(bao)破技術(shu)(shu)應(ying)用(yong)(yong)到工程做(zuo)(zuo)了不(bu)少理論分(fen)析,也取(qu)得(de)一些進展。80年(nian)代中(zhong)期(qi)開始進行應(ying)用(yong)(yong)研(yan)究(jiu),以北京礦業學院為代表(biao),著重研(yan)究(jiu)了聚(ju)(ju)能(neng)藥(yao)包切割(ge)饑(ji)理和應(ying)用(yong)(yong)。1987年(nian)淮(huai)南(nan)礦業學院取(qu)得(de)“雙(shuang)面切割(ge)器”的(de)(de)zhuanli,1995年(nian)又(you)取(qu)得(de)“大理石花崗巖切割(ge)技術(shu)(shu)應(ying)用(yong)(yong)”zhuanli。1991年(nian)中(zhong)國(guo)水電七局(ju)曾試(shi)圖采用(yong)(yong)硬質紙加工聚(ju)(ju)能(neng)藥(yao)管成形(xing)聚(ju)(ju)能(neng)藥(yao)卷做(zuo)(zuo)過(guo)聚(ju)(ju)能(neng)預裂爆(bao)破試(shi)驗研(yan)究(jiu),但終因當時(shi)的(de)(de)技術(shu)(shu)及工藝水平的(de)(de)限制無法(fa)用(yong)(yong)于正常施(shi)工,但是他(ta)們開了橢(tuo)圓雙(shuang)極(ji)線性(xing)聚(ju)(ju)能(neng)結構試(shi)驗的(de)(de)先河。雙(shuang)聚(ju)(ju)能(neng)預裂與光面爆(bao)破綜合技術(shu)(shu)開創輪廓控(kong)制爆(bao)破新時(shi)代。
在(zai)(zai)工(gong)程(cheng)爆(bao)(bao)(bao)破中(zhong),常(chang)用的(de)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)方(fang)(fang)法有(you)(you)(you):電(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法、導(dao)火索起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法、導(dao)爆(bao)(bao)(bao)索起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法、導(dao)爆(bao)(bao)(bao)管(guan)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法。電(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法是(shi)(shi)(shi)利(li)用電(dian)(dian)(dian)能使雷(lei)管(guan)爆(bao)(bao)(bao)炸,進而起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)炸藥的(de)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)芳(fang)法。它所(suo)需的(de)器材(cai)有(you)(you)(you):電(dian)(dian)(dian)雷(lei)管(guan)、導(dao)線和起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)電(dian)(dian)(dian)源。電(dian)(dian)(dian)爆(bao)(bao)(bao)網路的(de)連接形(xing)式,要根(gen)據爆(bao)(bao)(bao)破方(fang)(fang)法、爆(bao)(bao)(bao)破規模、工(gong)程(cheng)的(de)重要性、所(suo)選起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)電(dian)(dian)(dian)源及其(qi)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)能力等(deng)進行(xing)選擇,基本(ben)連接方(fang)(fang)式有(you)(you)(you):串(chuan)聯、并(bing)聯、串(chuan)并(bing)聯和并(bing)串(chuan)聯等(deng)。電(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)法具(ju)有(you)(you)(you)較安全、可靠、準確(que)、高效等(deng)優點,在(zai)(zai)國內外仍(reng)占有(you)(you)(you)較大(da)比重。在(zai)(zai)大(da)、中(zhong)型(xing)爆(bao)(bao)(bao)破中(zhong),主要仍(reng)是(shi)(shi)(shi)用電(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)。特別是(shi)(shi)(shi)在(zai)(zai)有(you)(you)(you)瓦斯、礦塵爆(bao)(bao)(bao)炸的(de)環(huan)境中(zhong),電(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)是(shi)(shi)(shi)主要的(de)起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)方(fang)(fang)法。但電(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)容易受各種電(dian)(dian)(dian)信號的(de)干(gan)擾而發生早(zao)爆(bao)(bao)(bao),因(yin)此(ci)在(zai)(zai)有(you)(you)(you)雜散電(dian)(dian)(dian)、靜電(dian)(dian)(dian)、雷(lei)電(dian)(dian)(dian)、射頻電(dian)(dian)(dian)、高壓感應電(dian)(dian)(dian)的(de)環(huan)境中(zhong),不能使用普通電(dian)(dian)(dian)雷(lei)管(guan)。
預(yu)(yu)裂(lie)與(yu)(yu)光(guang)(guang)面爆(bao)(bao)(bao)(bao)破(po)(po)(po)技術(shu)的(de)歷史與(yu)(yu)現(xian)(xian)狀(zhuang):預(yu)(yu)裂(lie)爆(bao)(bao)(bao)(bao)破(po)(po)(po)是(shi)(shi)沿設(she)計(ji)開(kai)挖邊界布(bu)置密集炮(pao)(pao)孔(kong),采(cai)取(qu)不耦合裝(zhuang)(zhuang)藥(yao)或(huo)裝(zhuang)(zhuang)填低(di)(di)威力(li)炸(zha)藥(yao),在(zai)主爆(bao)(bao)(bao)(bao)區(qu)之(zhi)前起(qi)爆(bao)(bao)(bao)(bao),從而在(zai)爆(bao)(bao)(bao)(bao)區(qu)與(yu)(yu)保留區(qu)之(zhi)間形成預(yu)(yu)裂(lie)縫,以減(jian)弱主爆(bao)(bao)(bao)(bao)破(po)(po)(po)對保留巖體的(de)破(po)(po)(po)壞并形成平(ping)整輪廓(kuo)面的(de)爆(bao)(bao)(bao)(bao)破(po)(po)(po)作業。光(guang)(guang)面爆(bao)(bao)(bao)(bao)破(po)(po)(po)是(shi)(shi)沿設(she)計(ji)開(kai)挖邊界布(bu)設(she)密集炮(pao)(pao)孔(kong),采(cai)用(yong)不耦合裝(zhuang)(zhuang)藥(yao)或(huo)裝(zhuang)(zhuang)填低(di)(di)威力(li)炸(zha)藥(yao),在(zai)主爆(bao)(bao)(bao)(bao)區(qu)爆(bao)(bao)(bao)(bao)破(po)(po)(po)之(zhi)后起(qi)爆(bao)(bao)(bao)(bao)的(de)以形成平(ping)整的(de)開(kai)挖輪廓(kuo)面的(de)爆(bao)(bao)(bao)(bao)破(po)(po)(po)作業。爆(bao)(bao)(bao)(bao)破(po)(po)(po)技術(shu)的(de)發展是(shi)(shi)先出現(xian)(xian)光(guang)(guang)面爆(bao)(bao)(bao)(bao)破(po)(po)(po),然(ran)后衍生(sheng)發展為預(yu)(yu)裂(lie)爆(bao)(bao)(bao)(bao)破(po)(po)(po)。聚能管國(guo)內歷史與(yu)(yu)現(xian)(xian)狀(zhuang),我國(guo)于1964~1965年(nian)在(zai)湖北陸(lu)水水電站(zhan)施工中做(zuo)過(guo)淺孔(kong)預(yu)(yu)裂(lie)爆(bao)(bao)(bao)(bao)破(po)(po)(po)試驗,1965年(nian)鐵道部門在(zai)成昆鐵路(lu)建設(she)中開(kai)始試驗光(guang)(guang)面爆(bao)(bao)(bao)(bao)破(po)(po)(po),1977年(nian)在(zai)西延線張家船工點,全長近200m的(de)2000m2路(lu)塹(qian)邊坡全部采(cai)用(yong)光(guang)(guang)面爆(bao)(bao)(bao)(bao)破(po)(po)(po),爆(bao)(bao)(bao)(bao)破(po)(po)(po)后邊坡平(ping)整穩定(ding),殘留的(de)半孔(kong)清晰(xi)可見,是(shi)(shi)鐵路(lu)建設(she)中采(cai)用(yong)路(lu)塹(qian)光(guang)(guang)面爆(bao)(bao)(bao)(bao)破(po)(po)(po)。
對(dui)(dui)于爆(bao)(bao)破(po)(po)(po)(po)作業(ye)(ye)安(an)(an)全(quan)技(ji)(ji)術(shu)(shu)的(de)(de)(de)(de)研(yan)究(jiu),是(shi)從兩個方(fang)面(mian)去(qu)考慮的(de)(de)(de)(de),一(yi)(yi)方(fang)面(mian)是(shi)炸(zha)和起(qi)爆(bao)(bao)器材以(yi)及對(dui)(dui)其(qi)爆(bao)(bao)炸(zha)所造成的(de)(de)(de)(de)破(po)(po)(po)(po)壞作用(yong)進(jin)(jin)行限(xian)制(zhi)的(de)(de)(de)(de)安(an)(an)全(quan)技(ji)(ji)術(shu)(shu),這(zhe)(zhe)是(shi)主(zhu)動的(de)(de)(de)(de)。另一(yi)(yi)個方(fang)面(mian)是(shi)對(dui)(dui)爆(bao)(bao)破(po)(po)(po)(po)所產生的(de)(de)(de)(de)危害采取(qu)(qu)的(de)(de)(de)(de)防護措施(shi),這(zhe)(zhe)是(shi)被動的(de)(de)(de)(de)一(yi)(yi)個方(fang)面(mian)。兩者(zhe)對(dui)(dui)阻止爆(bao)(bao)破(po)(po)(po)(po)帶來的(de)(de)(de)(de)破(po)(po)(po)(po)壞性(xing)有(you)(you)同樣的(de)(de)(de)(de)重(zhong)要(yao)性(xing),但在具體的(de)(de)(de)(de)爆(bao)(bao)破(po)(po)(po)(po)工程中,則常常會(hui)有(you)(you)變化不定(ding)的(de)(de)(de)(de)現(xian)象和后(hou)果,因此,必須(xu)對(dui)(dui)每一(yi)(yi)項工程破(po)(po)(po)(po)壞的(de)(de)(de)(de)具體情況(kuang)作細致的(de)(de)(de)(de)分析研(yan)究(jiu),從而采取(qu)(qu)適當的(de)(de)(de)(de)對(dui)(dui)策。同時,雖然技(ji)(ji)術(shu)(shu)不斷取(qu)(qu)得進(jin)(jin)步,須(xu)在操作過程中注意每個工序,按照安(an)(an)全(quan)規程認真作業(ye)(ye)。只要(yao)嚴格遵守安(an)(an)全(quan)規程、正確地采取(qu)(qu)安(an)(an)全(quan)技(ji)(ji)術(shu)(shu)措施(shi)和防護措施(shi),任(ren)何規模、任(ren)何種(zhong)類的(de)(de)(de)(de)爆(bao)(bao)破(po)(po)(po)(po)是(shi)可(ke)以(yi)確保安(an)(an)全(quan)的(de)(de)(de)(de)。一(yi)(yi)些安(an)(an)全(quan)規定(ding)的(de)(de)(de)(de)條文是(shi)有(you)(you)經驗(yan)教(jiao)(jiao)訓和理論(lun)根(gen)據的(de)(de)(de)(de),有(you)(you)的(de)(de)(de)(de)甚至是(shi)血(xue)的(de)(de)(de)(de)教(jiao)(jiao)訓的(de)(de)(de)(de)總(zong)結,所以(yi)一(yi)(yi)定(ding)要(yao)克服麻痹思想,嚴格執(zhi)行安(an)(an)全(quan)規定(ding),決不能以(yi)沒出過事故而輕率地"突(tu)破(po)(po)(po)(po)"規定(ding)的(de)(de)(de)(de)"框框"。