水壓光(guang)(guang)面(mian)(mian)爆(bao)破技(ji)術(shu)(shu)在(zai)隧道(dao)掘(jue)進作(zuo)業中的實際應用(yong)。提升(sheng)光(guang)(guang)面(mian)(mian)爆(bao)破水平、嚴抓(zhua)隧道(dao)超挖管控進行了介(jie)紹。聚能水壓光(guang)(guang)面(mian)(mian)爆(bao)破工藝技(ji)術(shu)(shu)很(hen)(hen)成熟(shu)、可操(cao)作(zuo)性(xing)很(hen)(hen)強、材(cai)料成本很(hen)(hen)低、施工速度很(hen)(hen)快、節能環保效果很(hen)(hen)顯著、經(jing)濟效益(yi)社(she)會效益(yi)很(hen)(hen)高(gao)。一是(shi)(shi)要(yao)(yao)(yao)(yao)(yao)提高(gao)對(dui)推(tui)廣該項技(ji)術(shu)(shu)重要(yao)(yao)(yao)(yao)(yao)性(xing)和必然性(xing)的認識;二是(shi)(shi)要(yao)(yao)(yao)(yao)(yao)樹立(li)必須采取聚能水壓光(guang)(guang)面(mian)(mian)爆(bao)破的意識;三是(shi)(shi)要(yao)(yao)(yao)(yao)(yao)堅持培訓、示范、監督“三位一體”;四是(shi)(shi)要(yao)(yao)(yao)(yao)(yao)制定切實的獎懲(cheng)制度;五是(shi)(shi)要(yao)(yao)(yao)(yao)(yao)建立(li)檢查監督機制,持續(xu)促進該項技(ji)術(shu)(shu)的深入推(tui)廣。在(zai)隧道(dao)施工的現場管理、科技(ji)創(chuang)新、人才(cai)培養、經(jing)濟效益(yi)等方面(mian)(mian)的不(bu)足。建議(yi)對(dui)施工一線(xian)基礎技(ji)術(shu)(shu)工作(zuo)扎實推(tui)進;對(dui)新工藝、先(xian)進工法要(yao)(yao)(yao)(yao)(yao)深入學習鉆研;對(dui)消(xiao)極懈怠(dai)、故(gu)步(bu)自封的思想要(yao)(yao)(yao)(yao)(yao)堅決抵制。
火(huo)(huo)索(suo)(suo)起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa),導(dao)火(huo)(huo)索(suo)(suo)起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)是(shi)利用導(dao)火(huo)(huo)索(suo)(suo)傳遞火(huo)(huo)焰點燃火(huo)(huo)雷管(guan)進而起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)炸藥(yao)。這種(zhong)起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)所(suo)需的(de)(de)材料(liao)有:導(dao)火(huo)(huo)索(suo)(suo)、火(huo)(huo)雷管(guan)和點火(huo)(huo)材料(liao)。導(dao)火(huo)(huo)索(suo)(suo)起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)操作(zuo)簡單、靈活,使用方便(bian),成(cheng)本較低(di),廣泛應用于小型爆(bao)(bao)(bao)(bao)(bao)破和掘進。由于導(dao)火(huo)(huo)索(suo)(suo)的(de)(de)速燃、緩燃等弊(bi)病,在爆(bao)(bao)(bao)(bao)(bao)破中事故所(suo)占比(bi)重最大。不能多處裝藥(yao)同時起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)。導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa),用導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)直接(jie)起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)炸藥(yao)包的(de)(de)方法(fa)叫導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)。先用雷管(guan)起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo),當導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)的(de)(de)爆(bao)(bao)(bao)(bao)(bao)轟(hong)波傳至炸藥(yao)包時,將(jiang)炸藥(yao)引爆(bao)(bao)(bao)(bao)(bao)。在需要延時分(fen)段(duan)起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)的(de)(de)地(di)方,將(jiang)導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)中接(jie)入繼(ji)爆(bao)(bao)(bao)(bao)(bao)管(guan),就能達到導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)毫(hao)秒爆(bao)(bao)(bao)(bao)(bao)破的(de)(de)目的(de)(de)。這種(zhong)爆(bao)(bao)(bao)(bao)(bao)破法(fa)所(suo)需起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)材料(liao)有:雷管(guan)、導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)和繼(ji)爆(bao)(bao)(bao)(bao)(bao)管(guan)等。導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)起(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)網路常用的(de)(de)有:串聯(lian)、簇并(bing)(bing)聯(lian)、單向(xiang)分(fen)段(duan)并(bing)(bing)聯(lian)和雙向(xiang)分(fen)段(duan)并(bing)(bing)聯(lian)等。
是由管(guan)(guan)(guan)體(ti)(ti)(ti)、前(qian)(qian)錐(zhui)形(xing)(xing)定(ding)(ding)(ding)格(ge)(ge)(ge)(ge)帽(mao)(mao)、后定(ding)(ding)(ding)格(ge)(ge)(ge)(ge)堵(du)(du)構成(cheng),管(guan)(guan)(guan)體(ti)(ti)(ti)為(wei)塑性材料制成(cheng),呈管(guan)(guan)(guan)狀,管(guan)(guan)(guan)體(ti)(ti)(ti)外(wai)(wai)(wai)徑(jing)(jing)(jing)(jing)(jing)小于正(zheng)常炮眼(yan)內(nei)徑(jing)(jing)(jing)(jing)(jing),長度(du)可隨爆破需要生產,管(guan)(guan)(guan)體(ti)(ti)(ti)兩端(duan)各有(you)(you)外(wai)(wai)(wai)螺(luo)紋(wen),兩端(duan)外(wai)(wai)(wai)螺(luo)紋(wen)間有(you)(you)一(yi)(yi)縱(zong)向(xiang)切縫,切縫間等距有(you)(you)加強筋(jin),前(qian)(qian)錐(zhui)形(xing)(xing)定(ding)(ding)(ding)格(ge)(ge)(ge)(ge)帽(mao)(mao)呈傘(san)狀,傘(san)形(xing)(xing)尖有(you)(you)一(yi)(yi)光(guang)孔,兩側直壁內(nei)徑(jing)(jing)(jing)(jing)(jing)有(you)(you)螺(luo)紋(wen),與(yu)管(guan)(guan)(guan)體(ti)(ti)(ti)外(wai)(wai)(wai)徑(jing)(jing)(jing)(jing)(jing)前(qian)(qian)端(duan)螺(luo)紋(wen)配(pei)(pei)合,帽(mao)(mao)體(ti)(ti)(ti)外(wai)(wai)(wai)徑(jing)(jing)(jing)(jing)(jing)大于管(guan)(guan)(guan)體(ti)(ti)(ti),后定(ding)(ding)(ding)格(ge)(ge)(ge)(ge)堵(du)(du)為(wei)一(yi)(yi)封蓋,外(wai)(wai)(wai)徑(jing)(jing)(jing)(jing)(jing)直徑(jing)(jing)(jing)(jing)(jing)大于管(guan)(guan)(guan)體(ti)(ti)(ti)外(wai)(wai)(wai)徑(jing)(jing)(jing)(jing)(jing),與(yu)前(qian)(qian)錐(zhui)形(xing)(xing)定(ding)(ding)(ding)格(ge)(ge)(ge)(ge)帽(mao)(mao)外(wai)(wai)(wai)徑(jing)(jing)(jing)(jing)(jing)一(yi)(yi)致(zhi),后定(ding)(ding)(ding)格(ge)(ge)(ge)(ge)堵(du)(du)內(nei)徑(jing)(jing)(jing)(jing)(jing)有(you)(you)螺(luo)紋(wen),與(yu)管(guan)(guan)(guan)體(ti)(ti)(ti)外(wai)(wai)(wai)徑(jing)(jing)(jing)(jing)(jing)后端(duan)螺(luo)紋(wen)配(pei)(pei)合。可根據炮眼(yan)深度(du)采用合適(shi)的聚能管(guan)(guan)(guan)管(guan)(guan)(guan)體(ti)(ti)(ti),不(bu)需其他工具幫助送(song)入炮眼(yan),切縫方向(xiang)準確,兩端(duan)的前(qian)(qian)錐(zhui)形(xing)(xing)定(ding)(ding)(ding)格(ge)(ge)(ge)(ge)帽(mao)(mao)和后定(ding)(ding)(ding)格(ge)(ge)(ge)(ge)堵(du)(du)外(wai)(wai)(wai)徑(jing)(jing)(jing)(jing)(jing)與(yu)炮眼(yan)內(nei)徑(jing)(jing)(jing)(jing)(jing)一(yi)(yi)致(zhi),保(bao)證聚能管(guan)(guan)(guan)管(guan)(guan)(guan)體(ti)(ti)(ti)同心,定(ding)(ding)(ding)向(xiang)準確。且利于工業化(hua)生產,作業安全(quan)
在(zai)鐵(tie)路(lu)、礦山(shan)、水庫等大(da)型工(gong)(gong)程(cheng)中,爆(bao)(bao)(bao)破技(ji)術(shu)的(de)(de)(de)(de)(de)作(zuo)用(yong)(yong)很關鍵很重要。采礦修(xiu)路(lu)的(de)(de)(de)(de)(de)開(kai)(kai)山(shan)挖(wa)(wa)隧道(dao),城市(shi)對(dui)舊建(jian)筑物的(de)(de)(de)(de)(de)拆(chai)除,都(dou)會用(yong)(yong)到爆(bao)(bao)(bao)破技(ji)術(shu)。隨著(zhu)經濟的(de)(de)(de)(de)(de)發展(zhan)、工(gong)(gong)程(cheng)建(jian)設(she)的(de)(de)(de)(de)(de)增(zeng)多(duo),爆(bao)(bao)(bao)破引起了(le)人們更(geng)多(duo)的(de)(de)(de)(de)(de)關注。爆(bao)(bao)(bao)破聚能(neng)(neng)管(guan)作(zuo)為一(yi)(yi)種(zhong)(zhong)科學技(ji)術(shu),應(ying)用(yong)(yong)很廣,但(dan)在(zai)工(gong)(gong)程(cheng)上的(de)(de)(de)(de)(de)應(ying)用(yong)(yong)無疑是重要、常見的(de)(de)(de)(de)(de),采礦開(kai)(kai)山(shan),修(xiu)鐵(tie)路(lu)、公(gong)路(lu)用(yong)(yong)鉆爆(bao)(bao)(bao)法(fa)來開(kai)(kai)掘隧道(dao),水利(li)工(gong)(gong)程(cheng)上也用(yong)(yong)一(yi)(yi)些,城市(shi)里面也使用(yong)(yong)了(le),拆(chai)除樓房。利(li)用(yong)(yong)炸爆(bao)(bao)(bao)炸產生的(de)(de)(de)(de)(de)巨大(da)能(neng)(neng)量破壞(huai)某種(zhong)(zhong)物體的(de)(de)(de)(de)(de)原(yuan)結構,這種(zhong)(zhong)"破壞(huai)"效(xiao)果不是其(qi)他方(fang)法(fa)能(neng)(neng)代替的(de)(de)(de)(de)(de),它雖然(ran)不是獨立(li)完成一(yi)(yi)個工(gong)(gong)程(cheng),但(dan)卻是一(yi)(yi)個重要的(de)(de)(de)(de)(de)工(gong)(gong)序,特(te)別是石方(fang)開(kai)(kai)挖(wa)(wa)、礦山(shan)開(kai)(kai)采等工(gong)(gong)程(cheng)缺少了(le)這個工(gong)(gong)序還不行。中國目前有發達的(de)(de)(de)(de)(de)鐵(tie)路(lu)和(he)公(gong)路(lu)交通(tong)網,可以想象,當初在(zai)修(xiu)這些路(lu)的(de)(de)(de)(de)(de)時候會遇到許多(duo)高山(shan)峻嶺,一(yi)(yi)座(zuo)大(da)山(shan)橫在(zai)兩地之間,想要修(xiu)路(lu),就必須(xu)讓這座(zuo)山(shan)消失,這個時候聚能(neng)(neng)管(guan)爆(bao)(bao)(bao)破就起到決定性(xing)作(zuo)用(yong)(yong)了(le)。
我國(guo)20世紀60年(nian)(nian)代利用(yong)斷裂(lie)(lie)力學對巖(yan)石損傷引起的裂(lie)(lie)紋擴展進(jin)行過(guo)試(shi)(shi)驗(yan)研究(jiu),為聚能(neng)(neng)爆(bao)(bao)破(po)技(ji)術(shu)應(ying)用(yong)到工(gong)程做(zuo)了不少理(li)論(lun)分析,也(ye)取得一些進(jin)展。80年(nian)(nian)代中期開始(shi)進(jin)行應(ying)用(yong)研究(jiu),以(yi)北京礦業學院為代表,著重研究(jiu)了聚能(neng)(neng)藥(yao)包切(qie)割(ge)饑(ji)理(li)和(he)應(ying)用(yong)。1987年(nian)(nian)淮南礦業學院取得“雙面切(qie)割(ge)器(qi)”的zhuanli,1995年(nian)(nian)又取得“大理(li)石花崗巖(yan)切(qie)割(ge)技(ji)術(shu)應(ying)用(yong)”zhuanli。1991年(nian)(nian)中國(guo)水電七局曾試(shi)(shi)圖采用(yong)硬質紙加工(gong)聚能(neng)(neng)藥(yao)管成形聚能(neng)(neng)藥(yao)卷做(zuo)過(guo)聚能(neng)(neng)預(yu)裂(lie)(lie)爆(bao)(bao)破(po)試(shi)(shi)驗(yan)研究(jiu),但(dan)終(zhong)因(yin)當時的技(ji)術(shu)及工(gong)藝水平的限制(zhi)無法(fa)用(yong)于正(zheng)常施工(gong),但(dan)是他們(men)開了橢(tuo)圓(yuan)雙極線性聚能(neng)(neng)結(jie)構試(shi)(shi)驗(yan)的先河。雙聚能(neng)(neng)預(yu)裂(lie)(lie)與光面爆(bao)(bao)破(po)綜合技(ji)術(shu)開創(chuang)輪(lun)廓控(kong)制(zhi)爆(bao)(bao)破(po)新時代。
專用礦用型聚能管光面爆破技術優勢:相對于傳統爆破工藝,聚能管光面爆破比常規爆破具有以下優勢∶少打眼,少裝藥。節約周邊鉆孔量50%,總鉆孔進尺減少30%;節約炸藥10~20%,雷管30%。節約噴漿料15-20%。節省時間∶每循環鉆孔、裝藥、噴漿時間1.5-2.0小時。礦用型聚能管廠家在安全方面利用水沙袋替代炮泥,以(yi)(yi)(yi)避免(mian)搗(dao)炮泥損毀電雷(lei)管(guan)導線,造成瞎(xia)炮。大(da)(da)大(da)(da)減(jian)少對圍(wei)巖(yan)(yan)擾(rao)動,光面效果好(hao),巖(yan)(yan)性(xing)(xing)條件差情況下(xia)可(ke)(ke)以(yi)(yi)(yi)大(da)(da)大(da)(da)減(jian)少超挖量,控制巷(xiang)道成型;巖(yan)(yan)性(xing)(xing)完整無節理(li)情況下(xia)眼痕率可(ke)(ke)以(yi)(yi)(yi)達(da)到(dao)90%以(yi)(yi)(yi)上,巷(xiang)道成型好(hao),穩定性(xing)(xing)強。布孔(kong)方式優(you)化成多(duo)排掏槽布孔(kong),單次掘(jue)進深度可(ke)(ke)以(yi)(yi)(yi)優(you)化提高10%到(dao)15%不等。由于炮孔(kong)數量大(da)(da)大(da)(da)減(jian)少可(ke)(ke)以(yi)(yi)(yi)考慮一起全斷面起爆(bao),節省放(fang)炮時間。