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線性聚能藥管替代常規爆破藥卷和傳爆線,利用線性聚能藥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。專業深孔爆破多向聚能管水壓光面爆破較水壓光面爆破,在周邊眼單循環火工品使用量上節約費用8.3%,周邊眼鉆孔數量從39個下降為23個費用節約41%,混凝土噴射每延米節約1.37立方米。聚能水壓光面爆破比水壓光面爆破每循環節約費用258.4元,即每延米節約76較元,節約費用比例達32%。此外,專業深孔爆破多向聚能管聚能(neng)水(shui)壓(ya)光(guang)面爆破能(neng)有效降低(di)隧道內石渣塊度(du)和粉塵(chen)含量,還可使通風時間有效縮短(duan)33%。
光(guang)面(mian)(mian)爆(bao)破技術優勢:相對于(yu)傳(chuan)統(tong)爆(bao)破工藝(yi),聚能(neng)管(guan)(guan)光(guang)面(mian)(mian)爆(bao)破比常規(gui)爆(bao)破具(ju)有以(yi)下優勢∶少(shao)打眼,少(shao)裝藥。節約周(zhou)邊鉆孔(kong)量50%,總(zong)鉆孔(kong)進(jin)尺(chi)減(jian)少(shao)30%;節約炸藥10~20%,雷管(guan)(guan)30%。節約噴(pen)漿(jiang)料15-20%。節省時(shi)(shi)間(jian)(jian)∶每循環(huan)鉆孔(kong)、裝藥、噴(pen)漿(jiang)時(shi)(shi)間(jian)(jian)1.5-2.0小時(shi)(shi)。在安全方(fang)面(mian)(mian)利用水沙袋替代炮(pao)(pao)泥,以(yi)避(bi)免搗炮(pao)(pao)泥損(sun)毀(hui)電雷管(guan)(guan)導線,造(zao)成(cheng)瞎炮(pao)(pao)。大大減(jian)少(shao)對圍巖(yan)(yan)擾動,光(guang)面(mian)(mian)效(xiao)果(guo)好(hao),巖(yan)(yan)性(xing)(xing)條(tiao)件差情(qing)況(kuang)下可以(yi)大大減(jian)少(shao)超挖(wa)量,控制巷道(dao)成(cheng)型;巖(yan)(yan)性(xing)(xing)完整(zheng)無節理情(qing)況(kuang)下眼痕(hen)率可以(yi)達到90%以(yi)上(shang),巷道(dao)成(cheng)型好(hao),穩定性(xing)(xing)強(qiang)。布孔(kong)方(fang)式優化成(cheng)多排掏槽(cao)布孔(kong),單次掘進(jin)深度(du)可以(yi)優化提高10%到15%不等。由于(yu)炮(pao)(pao)孔(kong)數(shu)量大大減(jian)少(shao)可以(yi)考(kao)慮一起全斷(duan)面(mian)(mian)起爆(bao),節省放炮(pao)(pao)時(shi)(shi)間(jian)(jian)。
水壓光(guang)面爆破(po)(po)技(ji)術(shu),是在水壓光(guang)面爆破(po)(po)技(ji)術(shu)基礎上發展起來的一項(xiang)新技(ji)術(shu),其掏槽眼(yan)(yan)、輔助眼(yan)(yan)裝藥(yao)結(jie)構和(he)爆破(po)(po)方(fang)式與水壓光(guang)面爆破(po)(po)相同,但在周邊眼(yan)(yan)中安裝專用(yong)(yong)聚能(neng)管(guan)(guan)裝置替(ti)代常(chang)規爆破(po)(po)藥(yao)卷和(he)傳爆線,利用(yong)(yong)聚能(neng)管(guan)(guan)產(chan)生的粒子(zi)射流動能(neng)、高壓爆破(po)(po)氣(qi)體應力及“氣(qi)楔”作用(yong)(yong),形成(cheng)平整圓順的開挖輪廓面,對控制超欠挖具(ju)有(you)良好效(xiao)(xiao)果,有(you)效(xiao)(xiao)提升(sheng)了隧(sui)道施(shi)工質量、進度(du)和(he)經濟效(xiao)(xiao)益。科(ke)學合理地利用(yong)(yong)能(neng)源(yuan),提高能(neng)源(yuan)利用(yong)(yong)效(xiao)(xiao)率,對節能(neng)減排也十分重(zhong)要。利用(yong)(yong)聚能(neng)管(guan)(guan)兩端的水平開出的聚能(neng)槽產(chan)生的聚能(neng)射流效(xiao)(xiao)應對巖石進行(xing)破(po)(po)碎(sui)。據專家測算(suan),由于聚能(neng)管(guan)(guan)兩端聚能(neng)槽產(chan)生的聚能(neng)切割效(xiao)(xiao)應,其能(neng)效(xiao)(xiao)比提升(sheng)一個量級。
預(yu)裂與(yu)光(guang)(guang)(guang)面爆(bao)(bao)(bao)破技術的(de)歷史與(yu)現狀(zhuang):預(yu)裂爆(bao)(bao)(bao)破是沿(yan)設(she)(she)(she)計開(kai)挖邊(bian)界(jie)布(bu)置(zhi)密集炮孔,采(cai)取(qu)不(bu)耦合裝藥或(huo)裝填(tian)低威(wei)力炸(zha)(zha)藥,在(zai)主爆(bao)(bao)(bao)區(qu)之前起(qi)爆(bao)(bao)(bao),從而在(zai)爆(bao)(bao)(bao)區(qu)與(yu)保留區(qu)之間形(xing)(xing)成(cheng)預(yu)裂縫(feng),以(yi)減(jian)弱(ruo)主爆(bao)(bao)(bao)破對(dui)保留巖(yan)體的(de)破壞并形(xing)(xing)成(cheng)平(ping)整(zheng)輪(lun)廓面的(de)爆(bao)(bao)(bao)破作業(ye)。光(guang)(guang)(guang)面爆(bao)(bao)(bao)破是沿(yan)設(she)(she)(she)計開(kai)挖邊(bian)界(jie)布(bu)設(she)(she)(she)密集炮孔,采(cai)用(yong)不(bu)耦合裝藥或(huo)裝填(tian)低威(wei)力炸(zha)(zha)藥,在(zai)主爆(bao)(bao)(bao)區(qu)爆(bao)(bao)(bao)破之后(hou)起(qi)爆(bao)(bao)(bao)的(de)以(yi)形(xing)(xing)成(cheng)平(ping)整(zheng)的(de)開(kai)挖輪(lun)廓面的(de)爆(bao)(bao)(bao)破作業(ye)。爆(bao)(bao)(bao)破技術的(de)發展是先(xian)出(chu)現光(guang)(guang)(guang)面爆(bao)(bao)(bao)破,然后(hou)衍(yan)生發展為預(yu)裂爆(bao)(bao)(bao)破。聚能管國內歷史與(yu)現狀(zhuang),我國于1964~1965年在(zai)湖北(bei)陸(lu)水水電(dian)站施(shi)工(gong)中(zhong)做過(guo)淺孔預(yu)裂爆(bao)(bao)(bao)破試驗,1965年鐵道部門在(zai)成(cheng)昆(kun)鐵路(lu)建設(she)(she)(she)中(zhong)開(kai)始(shi)試驗光(guang)(guang)(guang)面爆(bao)(bao)(bao)破,1977年在(zai)西延線張家(jia)船工(gong)點,全長近(jin)200m的(de)2000m2路(lu)塹(qian)邊(bian)坡全部采(cai)用(yong)光(guang)(guang)(guang)面爆(bao)(bao)(bao)破,爆(bao)(bao)(bao)破后(hou)邊(bian)坡平(ping)整(zheng)穩(wen)定(ding),殘留的(de)半孔清(qing)晰可見,是鐵路(lu)建設(she)(she)(she)中(zhong)采(cai)用(yong)路(lu)塹(qian)光(guang)(guang)(guang)面爆(bao)(bao)(bao)破。
水(shui)(shui)(shui)(shui)壓光面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)較水(shui)(shui)(shui)(shui)壓光面(mian)爆(bao)(bao)(bao)(bao)破(po)(po),在周邊(bian)眼單循環(huan)火工品使用(yong)(yong)量(liang)(liang)上節約(yue)費(fei)(fei)用(yong)(yong)8.3%,周邊(bian)眼鉆孔數(shu)量(liang)(liang)從39個下降為23個費(fei)(fei)用(yong)(yong)節約(yue)41%,混(hun)凝(ning)土噴射每(mei)(mei)(mei)延米節約(yue)1.37立方(fang)米。水(shui)(shui)(shui)(shui)壓光面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)比水(shui)(shui)(shui)(shui)壓光面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)每(mei)(mei)(mei)循環(huan)節約(yue)費(fei)(fei)用(yong)(yong)258.4元,即每(mei)(mei)(mei)延米節約(yue)76較元,節約(yue)費(fei)(fei)用(yong)(yong)比例達(da)32%。此外(wai),聚(ju)能(neng)管水(shui)(shui)(shui)(shui)壓光面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)能(neng)有(you)效(xiao)降低(di)隧道內石渣(zha)塊(kuai)度和粉塵含量(liang)(liang),還可使通(tong)風時(shi)間有(you)效(xiao)縮短33%。聚(ju)能(neng)管光面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)工藝技(ji)(ji)術(shu)(shu)很成熟、可操作(zuo)性(xing)很強、材料成本很低(di)、施(shi)工速度很快(kuai)、節能(neng)環(huan)保(bao)效(xiao)果很顯著、經濟效(xiao)益社會(hui)效(xiao)益很高。聚(ju)能(neng)管定向(xiang)爆(bao)(bao)(bao)(bao)破(po)(po)技(ji)(ji)術(shu)(shu)是近(jin)幾(ji)年發展起來的(de)一項(xiang)掘進新技(ji)(ji)術(shu)(shu),這種爆(bao)(bao)(bao)(bao)破(po)(po)技(ji)(ji)術(shu)(shu)與(yu)傳統(tong)的(de)光面(mian)爆(bao)(bao)(bao)(bao)破(po)(po)技(ji)(ji)術(shu)(shu)有(you)一定的(de)差別,聚(ju)能(neng)管定向(xiang)爆(bao)(bao)(bao)(bao)破(po)(po)原(yuan)理(li)是在巷(xiang)道周邊(bian)眼中(zhong)(zhong),將炸裝(zhuang)在聚(ju)能(neng)管中(zhong)(zhong)起爆(bao)(bao)(bao)(bao),爆(bao)(bao)(bao)(bao)破(po)(po)時(shi)利用(yong)(yong)聚(ju)能(neng)管的(de)聚(ju)能(neng)作(zuo)用(yong)(yong),以減少裂(lie)隙(xi)的(de)數(shu)量(liang)(liang)和控制優勢(shi)裂(lie)隙(xi)的(de)發展方(fang)向(xiang)。