在工程爆(bao)(bao)破(po)(po)中,常(chang)用(yong)的(de)(de)起爆(bao)(bao)方(fang)法(fa)有(you)(you):電(dian)力(li)(li)起爆(bao)(bao)法(fa)、導(dao)(dao)火索起爆(bao)(bao)法(fa)、導(dao)(dao)爆(bao)(bao)索起爆(bao)(bao)法(fa)、導(dao)(dao)爆(bao)(bao)管起爆(bao)(bao)法(fa)。電(dian)力(li)(li)起爆(bao)(bao)法(fa)是利(li)用(yong)電(dian)能(neng)(neng)(neng)使(shi)雷(lei)管爆(bao)(bao)炸(zha),進而起爆(bao)(bao)炸(zha)藥的(de)(de)起爆(bao)(bao)芳法(fa)。它(ta)所需的(de)(de)器材有(you)(you):電(dian)雷(lei)管、導(dao)(dao)線(xian)和(he)起爆(bao)(bao)電(dian)源。電(dian)爆(bao)(bao)網路的(de)(de)連(lian)接(jie)形(xing)式(shi)(shi),要(yao)(yao)根據爆(bao)(bao)破(po)(po)方(fang)法(fa)、爆(bao)(bao)破(po)(po)規模、工程的(de)(de)重要(yao)(yao)性、所選(xuan)起爆(bao)(bao)電(dian)源及其起爆(bao)(bao)能(neng)(neng)(neng)力(li)(li)等(deng)進行選(xuan)擇,基本連(lian)接(jie)方(fang)式(shi)(shi)有(you)(you):串(chuan)聯、并聯、串(chuan)并聯和(he)并串(chuan)聯等(deng)。電(dian)力(li)(li)起爆(bao)(bao)法(fa)具有(you)(you)較(jiao)安全(quan)、可靠、準(zhun)確(que)、高效(xiao)等(deng)優點,在國內外仍占(zhan)有(you)(you)較(jiao)大比重。在大、中型爆(bao)(bao)破(po)(po)中,主要(yao)(yao)仍是用(yong)電(dian)力(li)(li)起爆(bao)(bao)。特別是在有(you)(you)瓦(wa)斯、礦(kuang)塵爆(bao)(bao)炸(zha)的(de)(de)環境(jing)中,電(dian)力(li)(li)起爆(bao)(bao)是主要(yao)(yao)的(de)(de)起爆(bao)(bao)方(fang)法(fa)。但電(dian)力(li)(li)起爆(bao)(bao)容易(yi)受各種(zhong)電(dian)信號的(de)(de)干(gan)擾(rao)而發生(sheng)早爆(bao)(bao),因(yin)此(ci)在有(you)(you)雜散電(dian)、靜電(dian)、雷(lei)電(dian)、射頻電(dian)、高壓(ya)感應電(dian)的(de)(de)環境(jing)中,不能(neng)(neng)(neng)使(shi)用(yong)普通電(dian)雷(lei)管。
在建造隧(sui)道的(de)(de)(de)(de)時(shi)候,人(ren)們首先想到的(de)(de)(de)(de)個方(fang)式,就是(shi)(shi)使用(yong)(yong)(yong)爆(bao)(bao)破(po)(po)技術(shu),開山挖隧(sui)道修(xiu)路,常(chang)(chang)規爆(bao)(bao)破(po)(po)技術(shu)需要(yao)使用(yong)(yong)(yong)數以噸計的(de)(de)(de)(de)炸,炸的(de)(de)(de)(de)威力(li)十(shi)分巨(ju)大,但是(shi)(shi)在炸完之后,空氣中全是(shi)(shi)煙(yan)塵,根(gen)本無法(fa)進入,另外常(chang)(chang)規爆(bao)(bao)破(po)(po)炸出(chu)來的(de)(de)(de)(de)輪廓線(xian)凹(ao)凸(tu)不平,后期常(chang)(chang)常(chang)(chang)需要(yao)工人(ren)進一步修(xiu)補輪廓線(xian)才能(neng)(neng)進行下一道工序,耗時(shi)耗力(li),那么(me)有(you)沒有(you)其(qi)他的(de)(de)(de)(de)方(fang)式比(bi)常(chang)(chang)規爆(bao)(bao)破(po)(po)技術(shu)更好呢?2018年3月,央視(shi)報(bao)道了(le)一場隧(sui)道爆(bao)(bao)破(po)(po)對(dui)比(bi)實驗,實驗采(cai)用(yong)(yong)(yong)兩種(zhong)爆(bao)(bao)破(po)(po)技術(shu),滴喲(yo)中是(shi)(shi)使用(yong)(yong)(yong)炸的(de)(de)(de)(de)常(chang)(chang)規爆(bao)(bao)破(po)(po)技術(shu),第二種(zhong)則(ze)是(shi)(shi)國人(ren)新(xin)發明的(de)(de)(de)(de)聚能(neng)(neng)水壓光(guang)面(mian)爆(bao)(bao)破(po)(po)技術(shu),隨著聲聲巨(ju)響(xiang),這場對(dui)比(bi)試驗的(de)(de)(de)(de)結(jie)果超乎(hu)所(suo)有(you)人(ren)的(de)(de)(de)(de)意(yi)料,聚能(neng)(neng)水壓爆(bao)(bao)破(po)(po)技術(shu)的(de)(de)(de)(de)爆(bao)(bao)炸效果更好,而且爆(bao)(bao)破(po)(po)產生的(de)(de)(de)(de)水霧能(neng)(neng)將煙(yan)塵覆(fu)蓋,起(qi)到降(jiang)塵的(de)(de)(de)(de)作用(yong)(yong)(yong),這項爆(bao)(bao)破(po)(po)新(xin)方(fang)式得到了(le)觀眾們的(de)(de)(de)(de)認可。
我(wo)國20世紀(ji)60年(nian)代(dai)利(li)用斷裂力(li)學對巖石(shi)損傷引(yin)起的(de)(de)(de)裂紋擴展(zhan)進行過試(shi)驗研(yan)究(jiu),為(wei)聚(ju)(ju)能爆破技術應(ying)(ying)用到(dao)工(gong)(gong)程做了(le)(le)不少理論分析,也取得(de)一(yi)些(xie)進展(zhan)。80年(nian)代(dai)中(zhong)(zhong)期(qi)開始(shi)進行應(ying)(ying)用研(yan)究(jiu),以北京礦業學院為(wei)代(dai)表,著重研(yan)究(jiu)了(le)(le)聚(ju)(ju)能藥(yao)包切(qie)割(ge)饑理和應(ying)(ying)用。1987年(nian)淮(huai)南礦業學院取得(de)“雙(shuang)面切(qie)割(ge)器”的(de)(de)(de)zhuanli,1995年(nian)又取得(de)“大理石(shi)花崗巖切(qie)割(ge)技術應(ying)(ying)用”zhuanli。1991年(nian)中(zhong)(zhong)國水電(dian)七局曾(ceng)試(shi)圖(tu)采用硬質(zhi)紙(zhi)加(jia)工(gong)(gong)聚(ju)(ju)能藥(yao)管成形聚(ju)(ju)能藥(yao)卷(juan)做過聚(ju)(ju)能預裂爆破試(shi)驗研(yan)究(jiu),但終因當時(shi)的(de)(de)(de)技術及工(gong)(gong)藝水平(ping)的(de)(de)(de)限制(zhi)無法(fa)用于正常施工(gong)(gong),但是(shi)他們開了(le)(le)橢圓雙(shuang)極線(xian)性聚(ju)(ju)能結構試(shi)驗的(de)(de)(de)先河。雙(shuang)聚(ju)(ju)能預裂與光面爆破綜合技術開創輪廓控制(zhi)爆破新時(shi)代(dai)。
施工(gong)工(gong)藝嚴(yan)格遵循六字方(fang)針(掛滿、貼緊、對準):(1)要(yao)(yao)保(bao)(bao)證炮(pao)(pao)眼打(da)眼質(zhi)(zhi)量(liang)(liang),炮(pao)(pao)眼必(bi)須按(an)(an)技術要(yao)(yao)求合理布(bu)置(zhi)。(2)要(yao)(yao)保(bao)(bao)證掏槽眼以及其(qi)他眼眼的打(da)眼質(zhi)(zhi)量(liang)(liang),一定(ding)要(yao)(yao)在(zai)規定(ding)位置(zhi)上(shang)打(da)眼;二要(yao)(yao)保(bao)(bao)證炮(pao)(pao)眼深(shen)度和角度。(3)聚(ju)能(neng)管(guan)(guan)(guan)裝藥(yao)時(shi)(shi),要(yao)(yao)保(bao)(bao)證乳化炸藥(yao)在(zai)聚(ju)能(neng)管(guan)(guan)(guan)中(zhong)空內壁中(zhong)填(tian)充飽滿不得有空隙出現時(shi)(shi)以產生拒爆。(4)聚(ju)能(neng)管(guan)(guan)(guan)在(zai)炮(pao)(pao)眼中(zhong)裝填(tian)時(shi)(shi),要(yao)(yao)保(bao)(bao)證聚(ju)能(neng)管(guan)(guan)(guan)的兩條聚(ju)能(neng)槽指向(xiang)巷道(dao)輪廓線方(fang)向(xiang)并(bing)且(qie)各個炮(pao)(pao)眼聚(ju)能(neng)管(guan)(guan)(guan)的聚(ju)能(neng)槽軸(zhou)線方(fang)面(mian)要(yao)(yao)保(bao)(bao)證相(xiang)互連接在(zai)隧道(dao)輪廓線上(shang)。否則成型(xing)效果不僅不好(hao)(hao),反而(er)更差(cha)。(5)保(bao)(bao)證炮(pao)(pao)眼堵塞質(zhi)(zhi)量(liang)(liang)。(6)放(fang)炮(pao)(pao)員(yuan)應提前(qian)按(an)(an)規定(ding)裝好(hao)(hao)聚(ju)能(neng)管(guan)(guan)(guan)的炸藥(yao),并(bing)做好(hao)(hao)準備工(gong)作。試用范圍(wei):一級至(zhi)五級圍(wei)巖的光(guang)面(mian)爆破工(gong)程(cheng)。
聚能(neng)(neng)包由炸(zha)(zha)、形(xing)(xing)罩(zhao)(zhao)(zhao)、隔板(ban)、殼體、引(yin)信和支架等(deng)部分(fen)(fen)組成,其作用(yong)(yong)及對(dui)(dui)聚能(neng)(neng)包威力的(de)(de)影響分(fen)(fen)述如(ru)(ru)下。1.炸(zha)(zha),炸(zha)(zha)是(shi)聚能(neng)(neng)管(guan)爆(bao)(bao)破的(de)(de)能(neng)(neng)源,炸(zha)(zha)的(de)(de)爆(bao)(bao)壓(ya)(ya)(ya)越大,聚能(neng)(neng)彈威力越大;為得(de)到高爆(bao)(bao)壓(ya)(ya)(ya),需高爆(bao)(bao)速、高密度(du)的(de)(de)炸(zha)(zha)。常(chang)用(yong)(yong)炸(zha)(zha)有梯恩(en)梯、8321炸(zha)(zha)等(deng),裝(zhuang)方法有熔(rong)鑄,塑(su)裝(zhuang)和壓(ya)(ya)(ya)裝(zhuang)多種(zhong)。2.型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao),型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao)的(de)(de)作用(yong)(yong)是(shi)把炸(zha)(zha)的(de)(de)爆(bao)(bao)炸(zha)(zha)能(neng)(neng)轉(zhuan)化(hua)成罩(zhao)(zhao)(zhao)體材(cai)料(liao)的(de)(de)射流動能(neng)(neng),從(cong)而提高其穿(chuan)透和切割能(neng)(neng)力。型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao)的(de)(de)材(cai)料(liao)必(bi)須滿足四點(dian)(dian)要求,即可壓(ya)(ya)(ya)縮性小(xiao)、密度(du)高、塑(su)性和延展性好(hao),在形(xing)(xing)成射流中(zhong)不汽化(hua)。大量試(shi)驗證明,用(yong)(yong)紫銅制作型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao)效(xiao)果好(hao),其次為鑄鐵、鋼(gang)和陶瓷。型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao)的(de)(de)形(xing)(xing)狀多種(zhong)多樣,主要有軸對(dui)(dui)稱(cheng)型(xing)(xing)(xing)(xing),如(ru)(ru)圓錐形(xing)(xing)、半球形(xing)(xing)、拋物線(xian)形(xing)(xing)和喇叭形(xing)(xing)等(deng);面對(dui)(dui)稱(cheng)型(xing)(xing)(xing)(xing),常(chang)見的(de)(de)有用(yong)(yong)于切割屬板(ban)材(cai)的(de)(de)直線(xian)形(xing)(xing)和用(yong)(yong)于切割管(guan)材(cai)的(de)(de)環形(xing)(xing)聚能(neng)(neng)罩(zhao)(zhao)(zhao)兩(liang)種(zhong);中(zhong)心(xin)對(dui)(dui)稱(cheng)型(xing)(xing)(xing)(xing),這種(zhong)球形(xing)(xing)聚能(neng)(neng)包,中(zhong)心(xin)有球形(xing)(xing)空(kong)腔和球形(xing)(xing)罩(zhao)(zhao)(zhao),球形(xing)(xing)罩(zhao)(zhao)(zhao)外敷設炸(zha)(zha),若能(neng)(neng)在瞬間同時起爆(bao)(bao),可在空(kong)腔中(zhong)心(xin)點(dian)(dian)獲得(de)極(ji)大的(de)(de)能(neng)(neng)量集中(zhong)。在工程中(zhong)常(chang)用(yong)(yong)的(de)(de)是(shi)軸對(dui)(dui)稱(cheng)型(xing)(xing)(xing)(xing)和面對(dui)(dui)稱(cheng)型(xing)(xing)(xing)(xing)兩(liang)類(lei)型(xing)(xing)(xing)(xing)罩(zhao)(zhao)(zhao)。
許昌爆破多向聚能管水壓爆破是在炮孔兩端填充水袋,中間裝上乳化炸,炮孔再用炮泥封死,炮孔間距很大,兩個炮空之間相距了一米左右,是常規爆破的炮孔間距的兩倍,這樣可以節省炮孔材料,這兩個凹槽又稱為聚能槽,聚能槽非常重要,放置的位置和方向都十分講究,一點也不能出錯,爆破多向聚能管公司在爆破(po)(po)的(de)瞬間,高溫高壓(ya)聚能射(she)流立即往凹槽兩邊(bian)的(de)巖(yan)(yan)石進(jin)行(xing)切割(ge),巖(yan)(yan)石如(ru)同(tong)豆腐一樣輕松被切割(ge)切割(ge)出來的(de)輪廓線十(shi)分平順(shun),效果(guo)極好,聚能水壓(ya)爆破(po)(po)中的(de)水袋(dai)沒(mei)有降低爆破(po)(po)的(de)效果(guo),反而能保(bao)護(hu)隧道(dao)周(zhou)邊(bian)植被,減少地(di)質擾動,降低煙塵,重要的(de)是節省炸成本,在未來這(zhe)項技(ji)術會廣(guang)泛應用(yong)于工程(cheng)中,降低施工成本。爆破(po)(po)聚能管(guan)水壓(ya)光面爆破(po)(po)較(jiao)水壓(ya)光面爆破(po)(po),在周(zhou)邊(bian)眼單循環(huan)火(huo)工品使用(yong)量(liang)上節約費用(yong)8.3%,周(zhou)邊(bian)眼鉆孔數量(liang)從39個下(xia)降為23個費用(yong)節約41%,混凝土噴(pen)射(she)每延(yan)米(mi)節約1.37立方米(mi)。