火(huo)(huo)索(suo)(suo)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa),導(dao)火(huo)(huo)索(suo)(suo)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa)是利用(yong)導(dao)火(huo)(huo)索(suo)(suo)傳(chuan)遞(di)火(huo)(huo)焰點(dian)燃火(huo)(huo)雷管(guan)進而起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)炸藥。這(zhe)種起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa)所(suo)需(xu)的(de)(de)材料(liao)有(you):導(dao)火(huo)(huo)索(suo)(suo)、火(huo)(huo)雷管(guan)和(he)(he)點(dian)火(huo)(huo)材料(liao)。導(dao)火(huo)(huo)索(suo)(suo)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa)操作簡單、靈活,使用(yong)方(fang)便,成本較低,廣泛應用(yong)于小型爆(bao)(bao)(bao)(bao)(bao)破和(he)(he)掘進。由于導(dao)火(huo)(huo)索(suo)(suo)的(de)(de)速燃、緩燃等(deng)(deng)弊病(bing),在爆(bao)(bao)(bao)(bao)(bao)破中事故所(suo)占比(bi)重(zhong)最(zui)大。不(bu)能多處裝藥同(tong)時起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)。導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa),用(yong)導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)直(zhi)接(jie)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)炸藥包的(de)(de)方(fang)法(fa)(fa)叫導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa)。先用(yong)雷管(guan)起(qi)(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)轟波傳(chuan)至炸藥包時,將(jiang)(jiang)炸藥引爆(bao)(bao)(bao)(bao)(bao)。在需(xu)要延時分段(duan)(duan)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)的(de)(de)地方(fang),將(jiang)(jiang)導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)中接(jie)入繼爆(bao)(bao)(bao)(bao)(bao)管(guan),就能達(da)到(dao)導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)毫秒爆(bao)(bao)(bao)(bao)(bao)破的(de)(de)目(mu)的(de)(de)。這(zhe)種爆(bao)(bao)(bao)(bao)(bao)破法(fa)(fa)所(suo)需(xu)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)材料(liao)有(you):雷管(guan)、導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)和(he)(he)繼爆(bao)(bao)(bao)(bao)(bao)管(guan)等(deng)(deng)。導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)起(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)網(wang)路常用(yong)的(de)(de)有(you):串(chuan)聯(lian)、簇并(bing)(bing)聯(lian)、單向分段(duan)(duan)并(bing)(bing)聯(lian)和(he)(he)雙向分段(duan)(duan)并(bing)(bing)聯(lian)等(deng)(deng)。
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,o型聚能管價格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,專用o型聚能管在邊坡(po)(po)部位的(de)爆破(po)(po)設(she)計和施(shi)工(gong)都應(ying)采用光(guang)面爆破(po)(po)或預裂(lie)爆破(po)(po),并闡述了(le)光(guang)面(預裂(lie))爆破(po)(po)施(shi)工(gong)技(ji)術設(she)計的(de)原(yuan)則和參數、安(an)全措施(shi),而且(qie)還明(ming)確了(le)路(lu)塹邊坡(po)(po)光(guang)面(預裂(lie))爆破(po)(po)項目質量驗收檢(jian)測數量和檢(jian)測方法。無(wu)疑(yi)該規(gui)程的(de)實施(shi),有力地推動(dong)和促進了(le)光(guang)面(預裂(lie))爆破(po)(po)技(ji)術在鐵路(lu)建(jian)設(she)中的(de)應(ying)用與發(fa)展。
在工程爆(bao)(bao)(bao)(bao)(bao)破(po)中(zhong),常用(yong)的(de)起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)方法(fa)(fa)(fa)(fa)有(you)(you):電(dian)(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa)(fa)(fa)、導(dao)火索(suo)起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa)(fa)(fa)、導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa)(fa)(fa)、導(dao)爆(bao)(bao)(bao)(bao)(bao)管起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa)(fa)(fa)。電(dian)(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa)(fa)(fa)是利(li)用(yong)電(dian)(dian)(dian)(dian)能(neng)(neng)使(shi)雷管爆(bao)(bao)(bao)(bao)(bao)炸,進而起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)炸藥的(de)起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)芳法(fa)(fa)(fa)(fa)。它所需的(de)器(qi)材有(you)(you):電(dian)(dian)(dian)(dian)雷管、導(dao)線和起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)(dian)(dian)源(yuan)。電(dian)(dian)(dian)(dian)爆(bao)(bao)(bao)(bao)(bao)網路的(de)連接形式,要(yao)(yao)根(gen)據爆(bao)(bao)(bao)(bao)(bao)破(po)方法(fa)(fa)(fa)(fa)、爆(bao)(bao)(bao)(bao)(bao)破(po)規模(mo)、工程的(de)重要(yao)(yao)性、所選(xuan)起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)(dian)(dian)源(yuan)及(ji)其起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)能(neng)(neng)力等(deng)進行選(xuan)擇,基(ji)本(ben)連接方式有(you)(you):串聯、并(bing)聯、串并(bing)聯和并(bing)串聯等(deng)。電(dian)(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)(fa)(fa)(fa)具(ju)有(you)(you)較安全、可靠(kao)、準確、高效等(deng)優點,在國內外(wai)仍占有(you)(you)較大比重。在大、中(zhong)型(xing)爆(bao)(bao)(bao)(bao)(bao)破(po)中(zhong),主要(yao)(yao)仍是用(yong)電(dian)(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)。特別是在有(you)(you)瓦斯、礦塵(chen)爆(bao)(bao)(bao)(bao)(bao)炸的(de)環境中(zhong),電(dian)(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)是主要(yao)(yao)的(de)起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)方法(fa)(fa)(fa)(fa)。但電(dian)(dian)(dian)(dian)力起(qi)(qi)(qi)(qi)爆(bao)(bao)(bao)(bao)(bao)容易受(shou)各種電(dian)(dian)(dian)(dian)信號的(de)干擾而發生早爆(bao)(bao)(bao)(bao)(bao),因此在有(you)(you)雜散電(dian)(dian)(dian)(dian)、靜電(dian)(dian)(dian)(dian)、雷電(dian)(dian)(dian)(dian)、射(she)頻(pin)電(dian)(dian)(dian)(dian)、高壓感應電(dian)(dian)(dian)(dian)的(de)環境中(zhong),不(bu)能(neng)(neng)使(shi)用(yong)普通(tong)電(dian)(dian)(dian)(dian)雷管。
聚(ju)(ju)能(neng)(neng)(neng)(neng)包(bao)由炸(zha)(zha)(zha)(zha)、形(xing)罩(zhao)(zhao)、隔板(ban)、殼(ke)體、引信和(he)(he)支架(jia)等(deng)(deng)部分組成(cheng),其作用及對聚(ju)(ju)能(neng)(neng)(neng)(neng)包(bao)威力(li)(li)的(de)(de)(de)影響分述如下(xia)。1.炸(zha)(zha)(zha)(zha),炸(zha)(zha)(zha)(zha)是聚(ju)(ju)能(neng)(neng)(neng)(neng)管(guan)爆破的(de)(de)(de)能(neng)(neng)(neng)(neng)源,炸(zha)(zha)(zha)(zha)的(de)(de)(de)爆壓越(yue)大,聚(ju)(ju)能(neng)(neng)(neng)(neng)彈威力(li)(li)越(yue)大;為(wei)得到高(gao)爆壓,需(xu)高(gao)爆速(su)、高(gao)密(mi)度的(de)(de)(de)炸(zha)(zha)(zha)(zha)。常用炸(zha)(zha)(zha)(zha)有(you)(you)(you)梯恩梯、8321炸(zha)(zha)(zha)(zha)等(deng)(deng),裝(zhuang)方法有(you)(you)(you)熔(rong)鑄,塑裝(zhuang)和(he)(he)壓裝(zhuang)多(duo)(duo)種(zhong)。2.型(xing)(xing)罩(zhao)(zhao),型(xing)(xing)罩(zhao)(zhao)的(de)(de)(de)作用是把(ba)炸(zha)(zha)(zha)(zha)的(de)(de)(de)爆炸(zha)(zha)(zha)(zha)能(neng)(neng)(neng)(neng)轉化成(cheng)罩(zhao)(zhao)體材料的(de)(de)(de)射(she)流動能(neng)(neng)(neng)(neng),從而提(ti)高(gao)其穿透和(he)(he)切(qie)割(ge)能(neng)(neng)(neng)(neng)力(li)(li)。型(xing)(xing)罩(zhao)(zhao)的(de)(de)(de)材料必須滿足四點(dian)要求,即可壓縮性(xing)小、密(mi)度高(gao)、塑性(xing)和(he)(he)延展性(xing)好,在形(xing)成(cheng)射(she)流中(zhong)不汽化。大量試驗證(zheng)明(ming),用紫銅(tong)制作型(xing)(xing)罩(zhao)(zhao)效果好,其次(ci)為(wei)鑄鐵、鋼(gang)和(he)(he)陶瓷(ci)。型(xing)(xing)罩(zhao)(zhao)的(de)(de)(de)形(xing)狀(zhuang)多(duo)(duo)種(zhong)多(duo)(duo)樣,主要有(you)(you)(you)軸對稱(cheng)型(xing)(xing),如圓(yuan)錐(zhui)形(xing)、半(ban)球(qiu)(qiu)形(xing)、拋物(wu)線形(xing)和(he)(he)喇叭形(xing)等(deng)(deng);面對稱(cheng)型(xing)(xing),常見的(de)(de)(de)有(you)(you)(you)用于切(qie)割(ge)屬板(ban)材的(de)(de)(de)直線形(xing)和(he)(he)用于切(qie)割(ge)管(guan)材的(de)(de)(de)環形(xing)聚(ju)(ju)能(neng)(neng)(neng)(neng)罩(zhao)(zhao)兩種(zhong);中(zhong)心對稱(cheng)型(xing)(xing),這種(zhong)球(qiu)(qiu)形(xing)聚(ju)(ju)能(neng)(neng)(neng)(neng)包(bao),中(zhong)心有(you)(you)(you)球(qiu)(qiu)形(xing)空腔(qiang)和(he)(he)球(qiu)(qiu)形(xing)罩(zhao)(zhao),球(qiu)(qiu)形(xing)罩(zhao)(zhao)外敷設炸(zha)(zha)(zha)(zha),若能(neng)(neng)(neng)(neng)在瞬間同時起(qi)爆,可在空腔(qiang)中(zhong)心點(dian)獲得極(ji)大的(de)(de)(de)能(neng)(neng)(neng)(neng)量集中(zhong)。在工程(cheng)中(zhong)常用的(de)(de)(de)是軸對稱(cheng)型(xing)(xing)和(he)(he)面對稱(cheng)型(xing)(xing)兩類型(xing)(xing)罩(zhao)(zhao)。
不成(cheng)功的(de)(de)(de)(de)事例是有的(de)(de)(de)(de),如爆而不倒、實施(shi)定(ding)向爆破(po)后(hou)(hou)沒(mei)有按爆破(po)方(fang)案的(de)(de)(de)(de)方(fang)向倒塌等等。這(zhe)些事例警(jing)示:從爆破(po)設(she)(she)計、爆破(po)器(qi)材質(zhi)量(liang)、爆破(po)施(shi)工(gong)到(dao)起(qi)爆網(wang)路(lu)連接等,只(zhi)要有一(yi)個(ge)環節出(chu)現失(shi)誤(wu),都將(jiang)影響爆破(po)工(gong)程(cheng)的(de)(de)(de)(de)效果,乃至(zhi)造成(cheng)嚴重(zhong)的(de)(de)(de)(de)后(hou)(hou)果。爆破(po)作(zuo)業無論是老舊建(jian)筑(zhu)(zhu)物(wu)本身(shen)還(huan)是周(zhou)圍環境都十(shi)分(fen)(fen)復雜,這(zhe)不僅(jin)要求認真(zhen)調查爆破(po)體的(de)(de)(de)(de)結構(包(bao)括施(shi)工(gong)缺陷),分(fen)(fen)析受力(li)狀(zhuang)況,同(tong)時還(huan)要對(dui)采(cai)取技(ji)(ji)術措施(shi)(如預(yu)處(chu)理、嵌補、支撐(cheng)等)的(de)(de)(de)(de)可靠和(he)(he)安全性進行分(fen)(fen)析,對(dui)可能出(chu)現的(de)(de)(de)(de)意(yi)外情(qing)況,應預(yu)先制定(ding)應急方(fang)案,努力(li)避(bi)免(mian)安全事故和(he)(he)不必要的(de)(de)(de)(de)損失(shi)。工(gong)程(cheng)的(de)(de)(de)(de)環保性越來越受到(dao)人們的(de)(de)(de)(de)關注,同(tong)時,探(tan)索無公(gong)害(hai)的(de)(de)(de)(de)拆除爆破(po)技(ji)(ji)術,一(yi)直是爆破(po)工(gong)作(zuo)者(zhe)追求的(de)(de)(de)(de)目標。設(she)(she)立掩蔽(bi)體對(dui)物(wu)體加以(yi)保護,簡單的(de)(de)(de)(de)辦法是用(yong)(yong)草袋、竹(zhu)笆一(yi)類材料覆蓋在(zai)需要保護的(de)(de)(de)(de)物(wu)體上(shang)面;對(dui)房屋(wu)和(he)(he)機器(qi)設(she)(she)備常(chang)要在(zai)迎面和(he)(he)頂部豎立排架,用(yong)(yong)木板或荊笆上(shang)罩鐵絲網(wang),抵(di)御較多的(de)(de)(de)(de)飛石和(he)(he)較強的(de)(de)(de)(de)空氣(qi)沖擊(ji)波的(de)(de)(de)(de)打(da)(da)擊(ji);對(dui)某些重(zhong)要工(gong)程(cheng)的(de)(de)(de)(de)建(jian)筑(zhu)(zhu)物(wu)打(da)(da)防(fang)震孔或者(zhe)用(yong)(yong)預(yu)裂爆破(po)將(jiang)爆破(po)區(qu)和(he)(he)被保護的(de)(de)(de)(de)建(jian)筑(zhu)(zhu)物(wu)或工(gong)程(cheng)設(she)(she)施(shi)隔離開來。
采用(yong)一種(zhong)抗靜(jing)電(dian)阻燃(ran)的(de)特種(zhong)塑(su)料管、異形雙(shuang)槽(cao)聚(ju)能管,根據炮眼(yan)深(shen)度可長可短(duan)。是兩個相(xiang)似半(ban)壁管組(zu)成(cheng)(cheng),半(ban)壁管中央(yang)有(you)個凹(ao)進去(qu)的(de)槽(cao)叫做'聚(ju)能槽(cao)",使用(yong)聚(ju)能管光(guang)面(mian)爆(bao)破(po)成(cheng)(cheng)型效(xiao)果(guo)好,開挖輪(lun)廓線平順整齊,圍巖擾動減(jian)少(shao)(shao)(shao)、超(chao)欠挖明顯(xian)改善,有(you)利于(yu)支(zhi)護工序(xu)施工,同時混凝土回填成(cheng)(cheng)本(ben)大(da)為(wei)降(jiang)低(di)。鑿(zao)孔率(lv)(lv)(lv)減(jian)少(shao)(shao)(shao)30%,大(da)大(da)降(jiang)低(di)了(le)(le)爆(bao)破(po)作業工班的(de)勞動量:鉆(zhan)孔縮(suo)短(duan)30分鐘(zhong)、少(shao)(shao)(shao)打眼(yan)、出渣量減(jian)少(shao)(shao)(shao),降(jiang)低(di)了(le)(le)材料成(cheng)(cheng)本(ben)、減(jian)少(shao)(shao)(shao)工時消耗、勞動效(xiao)率(lv)(lv)(lv)明顯(xian)提高(gao),周(zhou)邊眼(yan)爆(bao)破(po)成(cheng)(cheng)本(ben)降(jiang)低(di)30%以上(shang),半(ban)眼(yan)痕保留率(lv)(lv)(lv)高(gao)達85%以上(shang)。pvc爆(bao)破(po)聚(ju)能管主要應用(yong)于(yu)隧道、煤礦、鐵(tie)礦等需要進行光(guang)面(mian)爆(bao)破(po)施工的(de)工程。采用(yong)聚(ju)能管的(de)光(guang)面(mian)爆(bao)破(po)可減(jian)少(shao)(shao)(shao)鉆(zhan)孔,擴大(da)孔距,減(jian)少(shao)(shao)(shao)導爆(bao)管用(yong)量,減(jian)少(shao)(shao)(shao)超(chao)挖,減(jian)少(shao)(shao)(shao)噴漿,提高(gao)半(ban)孔率(lv)(lv)(lv),既節省了(le)(le)成(cheng)(cheng)本(ben)又提高(gao)了(le)(le)施工效(xiao)率(lv)(lv)(lv)。