不(bu)成功的(de)(de)(de)(de)(de)(de)事例是有(you)的(de)(de)(de)(de)(de)(de),如爆(bao)(bao)(bao)(bao)而不(bu)倒(dao)、實(shi)施(shi)定(ding)向爆(bao)(bao)(bao)(bao)破(po)(po)(po)后(hou)沒有(you)按爆(bao)(bao)(bao)(bao)破(po)(po)(po)方(fang)案的(de)(de)(de)(de)(de)(de)方(fang)向倒(dao)塌等等。這些(xie)事例警示:從(cong)爆(bao)(bao)(bao)(bao)破(po)(po)(po)設計、爆(bao)(bao)(bao)(bao)破(po)(po)(po)器材(cai)質量、爆(bao)(bao)(bao)(bao)破(po)(po)(po)施(shi)工到起爆(bao)(bao)(bao)(bao)網路連接等,只(zhi)要(yao)有(you)一個環(huan)節出現(xian)失(shi)誤,都將影響爆(bao)(bao)(bao)(bao)破(po)(po)(po)工程的(de)(de)(de)(de)(de)(de)效果,乃至造成嚴(yan)重的(de)(de)(de)(de)(de)(de)后(hou)果。爆(bao)(bao)(bao)(bao)破(po)(po)(po)作(zuo)業無(wu)論(lun)是老(lao)舊(jiu)建(jian)筑(zhu)物(wu)本(ben)身還是周圍環(huan)境(jing)都十(shi)分復雜,這不(bu)僅要(yao)求認真調(diao)查(cha)爆(bao)(bao)(bao)(bao)破(po)(po)(po)體的(de)(de)(de)(de)(de)(de)結(jie)構(gou)(包括(kuo)施(shi)工缺(que)陷),分析受力狀況,同時(shi)(shi)還要(yao)對(dui)(dui)(dui)采取(qu)技(ji)術(shu)措施(shi)(如預處理(li)、嵌(qian)補(bu)、支撐等)的(de)(de)(de)(de)(de)(de)可(ke)靠和安(an)全性(xing)進行分析,對(dui)(dui)(dui)可(ke)能出現(xian)的(de)(de)(de)(de)(de)(de)意外(wai)情況,應預先制(zhi)定(ding)應急方(fang)案,努力避免安(an)全事故和不(bu)必要(yao)的(de)(de)(de)(de)(de)(de)損(sun)失(shi)。工程的(de)(de)(de)(de)(de)(de)環(huan)保性(xing)越來越受到人們的(de)(de)(de)(de)(de)(de)關注,同時(shi)(shi),探索無(wu)公害的(de)(de)(de)(de)(de)(de)拆除爆(bao)(bao)(bao)(bao)破(po)(po)(po)技(ji)術(shu),一直是爆(bao)(bao)(bao)(bao)破(po)(po)(po)工作(zuo)者追求的(de)(de)(de)(de)(de)(de)目標(biao)。設立掩蔽體對(dui)(dui)(dui)物(wu)體加以(yi)保護,簡單的(de)(de)(de)(de)(de)(de)辦法是用(yong)(yong)草(cao)袋(dai)、竹笆一類(lei)材(cai)料覆蓋在(zai)需(xu)要(yao)保護的(de)(de)(de)(de)(de)(de)物(wu)體上(shang)面(mian);對(dui)(dui)(dui)房屋(wu)和機器設備常要(yao)在(zai)迎面(mian)和頂部豎立排架,用(yong)(yong)木板或荊笆上(shang)罩鐵絲網,抵御(yu)較(jiao)多的(de)(de)(de)(de)(de)(de)飛石和較(jiao)強的(de)(de)(de)(de)(de)(de)空氣沖(chong)擊(ji)波的(de)(de)(de)(de)(de)(de)打擊(ji);對(dui)(dui)(dui)某些(xie)重要(yao)工程的(de)(de)(de)(de)(de)(de)建(jian)筑(zhu)物(wu)打防震孔(kong)或者用(yong)(yong)預裂爆(bao)(bao)(bao)(bao)破(po)(po)(po)將爆(bao)(bao)(bao)(bao)破(po)(po)(po)區和被保護的(de)(de)(de)(de)(de)(de)建(jian)筑(zhu)物(wu)或工程設施(shi)隔離開來。
專用c型聚能管是將炸藥裝在聚能管內,兩頭均放置了水袋,聚能管爆炸產生的高溫高壓射流,讓水袋產生“水楔”效應,使圍巖裂縫加劇延伸擴展。它是在水壓光面爆破基礎上發展起來的一項新技術,區別只是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,只要做到七大關鍵環節:水袋挺拔飽滿、炮泥軟硬適中、水袋裝填到底、炮泥回填到口、木棍逐節搗固、水藥緊密相連、槽面必須平行,就能對控制超欠挖起到良好效果。c型聚能管廠家在(zai)推廣水壓爆破的(de)基礎上,去年9月,水壓聚能爆破的(de)成(cheng)果上,今年更為深(shen)入地(di)在(zai)興(xing)泉鐵路大嶺隧(sui)道、牡佳鐵路麻山隧(sui)道采用了此項技術,積累了成(cheng)功經驗。
火(huo)(huo)(huo)索(suo)(suo)起(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa),導(dao)火(huo)(huo)(huo)索(suo)(suo)起(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)是利用(yong)(yong)導(dao)火(huo)(huo)(huo)索(suo)(suo)傳(chuan)遞(di)火(huo)(huo)(huo)焰(yan)點燃(ran)火(huo)(huo)(huo)雷(lei)管進(jin)而起(qi)爆(bao)(bao)(bao)(bao)(bao)炸(zha)(zha)藥(yao)(yao)。這種起(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)所(suo)需的(de)(de)(de)(de)材料(liao)(liao)有(you):導(dao)火(huo)(huo)(huo)索(suo)(suo)、火(huo)(huo)(huo)雷(lei)管和(he)點火(huo)(huo)(huo)材料(liao)(liao)。導(dao)火(huo)(huo)(huo)索(suo)(suo)起(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)操(cao)作(zuo)簡單、靈活,使(shi)用(yong)(yong)方便,成本較低,廣泛應用(yong)(yong)于小型爆(bao)(bao)(bao)(bao)(bao)破(po)和(he)掘進(jin)。由(you)于導(dao)火(huo)(huo)(huo)索(suo)(suo)的(de)(de)(de)(de)速燃(ran)、緩燃(ran)等(deng)(deng)弊病(bing),在爆(bao)(bao)(bao)(bao)(bao)破(po)中事(shi)故所(suo)占比(bi)重(zhong)最大。不能多處裝藥(yao)(yao)同時起(qi)爆(bao)(bao)(bao)(bao)(bao)。導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)起(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa),用(yong)(yong)導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)直接起(qi)爆(bao)(bao)(bao)(bao)(bao)炸(zha)(zha)藥(yao)(yao)包(bao)的(de)(de)(de)(de)方法(fa)叫導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)起(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)。先用(yong)(yong)雷(lei)管起(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)(de)(de)爆(bao)(bao)(bao)(bao)(bao)轟(hong)波傳(chuan)至炸(zha)(zha)藥(yao)(yao)包(bao)時,將炸(zha)(zha)藥(yao)(yao)引爆(bao)(bao)(bao)(bao)(bao)。在需要延(yan)時分段起(qi)爆(bao)(bao)(bao)(bao)(bao)的(de)(de)(de)(de)地方,將導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)中接入繼爆(bao)(bao)(bao)(bao)(bao)管,就能達到導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)毫秒爆(bao)(bao)(bao)(bao)(bao)破(po)的(de)(de)(de)(de)目的(de)(de)(de)(de)。這種爆(bao)(bao)(bao)(bao)(bao)破(po)法(fa)所(suo)需起(qi)爆(bao)(bao)(bao)(bao)(bao)材料(liao)(liao)有(you):雷(lei)管、導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)和(he)繼爆(bao)(bao)(bao)(bao)(bao)管等(deng)(deng)。導(dao)爆(bao)(bao)(bao)(bao)(bao)索(suo)(suo)起(qi)爆(bao)(bao)(bao)(bao)(bao)網路常用(yong)(yong)的(de)(de)(de)(de)有(you):串聯(lian)、簇(cu)并(bing)聯(lian)、單向(xiang)(xiang)分段并(bing)聯(lian)和(he)雙(shuang)向(xiang)(xiang)分段并(bing)聯(lian)等(deng)(deng)。
我國于(yu)1983年(nian)制(zhi)定(ding)了(le)《水(shui)(shui)工(gong)(gong)(gong)建(jian)筑(zhu)(zhu)物巖行基礎(chu)開(kai)挖工(gong)(gong)(gong)程施(shi)工(gong)(gong)(gong)技(ji)(ji)(ji)術(shu)(shu)規范(fan)》(sD 121l一(yi)1983)。自此(ci),在(zai)水(shui)(shui)利水(shui)(shui)電建(jian)設(she)(she)中(zhong)預(yu)裂(lie)(lie)爆(bao)(bao)破(po)與(yu)光(guang)面爆(bao)(bao)破(po)已成為(wei)必須進行的保(bao)護邊(bian)(bian)坡(po)質量(liang)的爆(bao)(bao)破(po)開(kai)挖技(ji)(ji)(ji)術(shu)(shu)措(cuo)施(shi)。此(ci)后(hou)在(zai)此(ci)基礎(chu)上(shang)修訂(ding)的《水(shui)(shui)工(gong)(gong)(gong)建(jian)筑(zhu)(zhu)物巖石基礎(chu)開(kai)挖工(gong)(gong)(gong)程施(shi)工(gong)(gong)(gong)技(ji)(ji)(ji)術(shu)(shu)規范(fan)》(SL 47一(yi)1994)以(yi)及(ji)在(zai)《水(shui)(shui)電水(shui)(shui)利爆(bao)(bao)破(po)工(gong)(gong)(gong)程施(shi)工(gong)(gong)(gong)技(ji)(ji)(ji)術(shu)(shu)規范(fan)》(DL/T 5135—2001)和(he)(he)(he)《水(shui)(shui)工(gong)(gong)(gong)建(jian)筑(zhu)(zhu)物巖石基礎(chu)開(kai)挖工(gong)(gong)(gong)程施(shi)工(gong)(gong)(gong)技(ji)(ji)(ji)術(shu)(shu)規范(fan)》(DL/T 5389~2007)中(zhong)預(yu)裂(lie)(lie)爆(bao)(bao)破(po)與(yu)光(guang)面爆(bao)(bao)破(po)均被編入并(bing)有(you)(you)所改(gai)進,DL/T 5135—2001正在(zai)修編為(wei)DL/T 5135—2012。鐵道部(bu)也(ye)不僅規定(ding)了(le)凡(fan)是(shi)Ⅲ級以(yi)上(shang)的巖石邊(bian)(bian)坡(po),設(she)(she)計邊(bian)(bian)坡(po)坡(po)度(du)為(wei)1:0.1~1:0.75,在(zai)邊(bian)(bian)坡(po)部(bu)位的爆(bao)(bao)破(po)設(she)(she)計和(he)(he)(he)施(shi)工(gong)(gong)(gong)都應采(cai)用光(guang)面爆(bao)(bao)破(po)或預(yu)裂(lie)(lie)爆(bao)(bao)破(po),并(bing)闡述(shu)了(le)光(guang)面(預(yu)裂(lie)(lie))爆(bao)(bao)破(po)施(shi)工(gong)(gong)(gong)技(ji)(ji)(ji)術(shu)(shu)設(she)(she)計的原則和(he)(he)(he)參數、安全措(cuo)施(shi),而且還明確了(le)路(lu)塹邊(bian)(bian)坡(po)光(guang)面(預(yu)裂(lie)(lie))爆(bao)(bao)破(po)項(xiang)目質量(liang)驗收(shou)檢測數量(liang)和(he)(he)(he)檢測方法。無疑該(gai)規程的實施(shi),有(you)(you)力地推動(dong)和(he)(he)(he)促進了(le)光(guang)面(預(yu)裂(lie)(lie))爆(bao)(bao)破(po)技(ji)(ji)(ji)術(shu)(shu)在(zai)鐵路(lu)建(jian)設(she)(she)中(zhong)的應用與(yu)發展。
施工(gong)工(gong)藝(yi)嚴格遵循(xun)六字方(fang)針(掛滿、貼(tie)緊、對準(zhun)):(1)要(yao)(yao)保(bao)證(zheng)(zheng)(zheng)(zheng)炮(pao)(pao)(pao)眼(yan)打眼(yan)質量,炮(pao)(pao)(pao)眼(yan)必須按(an)技術要(yao)(yao)求合理布置(zhi)。(2)要(yao)(yao)保(bao)證(zheng)(zheng)(zheng)(zheng)掏槽眼(yan)以及其他(ta)眼(yan)眼(yan)的打眼(yan)質量,一定(ding)要(yao)(yao)在規(gui)(gui)定(ding)位置(zhi)上(shang)打眼(yan);二要(yao)(yao)保(bao)證(zheng)(zheng)(zheng)(zheng)炮(pao)(pao)(pao)眼(yan)深度和角度。(3)聚(ju)能(neng)(neng)管裝藥時,要(yao)(yao)保(bao)證(zheng)(zheng)(zheng)(zheng)乳化炸藥在聚(ju)能(neng)(neng)管中(zhong)(zhong)空內壁中(zhong)(zhong)填(tian)充飽滿不得(de)有(you)空隙出(chu)現時以產生拒爆。(4)聚(ju)能(neng)(neng)管在炮(pao)(pao)(pao)眼(yan)中(zhong)(zhong)裝填(tian)時,要(yao)(yao)保(bao)證(zheng)(zheng)(zheng)(zheng)聚(ju)能(neng)(neng)管的兩條聚(ju)能(neng)(neng)槽指向巷(xiang)道輪廓線方(fang)向并且各(ge)個炮(pao)(pao)(pao)眼(yan)聚(ju)能(neng)(neng)管的聚(ju)能(neng)(neng)槽軸線方(fang)面(mian)要(yao)(yao)保(bao)證(zheng)(zheng)(zheng)(zheng)相互(hu)連接在隧(sui)道輪廓線上(shang)。否則(ze)成型效果(guo)不僅不好(hao),反(fan)而更差。(5)保(bao)證(zheng)(zheng)(zheng)(zheng)炮(pao)(pao)(pao)眼(yan)堵塞質量。(6)放炮(pao)(pao)(pao)員應提前按(an)規(gui)(gui)定(ding)裝好(hao)聚(ju)能(neng)(neng)管的炸藥,并做好(hao)準(zhun)備工(gong)作。試用(yong)范圍(wei):一級至(zhi)五級圍(wei)巖(yan)的光(guang)面(mian)爆破(po)工(gong)程(cheng)。
在鐵路(lu)、礦山(shan)(shan)(shan)、水庫(ku)等大(da)型工(gong)(gong)程(cheng)中,爆(bao)破(po)(po)技(ji)術的(de)(de)(de)(de)作(zuo)用(yong)(yong)很(hen)關(guan)鍵(jian)很(hen)重(zhong)要(yao)。采礦修路(lu)的(de)(de)(de)(de)開(kai)山(shan)(shan)(shan)挖隧道,城(cheng)市(shi)對舊建(jian)筑物(wu)的(de)(de)(de)(de)拆(chai)除(chu)(chu),都會用(yong)(yong)到爆(bao)破(po)(po)技(ji)術。隨著(zhu)經濟的(de)(de)(de)(de)發展、工(gong)(gong)程(cheng)建(jian)設(she)的(de)(de)(de)(de)增多(duo),爆(bao)破(po)(po)引起了(le)(le)人們更多(duo)的(de)(de)(de)(de)關(guan)注。爆(bao)破(po)(po)聚(ju)能管作(zuo)為一種科學技(ji)術,應用(yong)(yong)很(hen)廣(guang),但在工(gong)(gong)程(cheng)上的(de)(de)(de)(de)應用(yong)(yong)無疑是(shi)重(zhong)要(yao)、常見的(de)(de)(de)(de),采礦開(kai)山(shan)(shan)(shan),修鐵路(lu)、公(gong)路(lu)用(yong)(yong)鉆爆(bao)法來開(kai)掘隧道,水利(li)工(gong)(gong)程(cheng)上也(ye)用(yong)(yong)一些(xie),城(cheng)市(shi)里面也(ye)使用(yong)(yong)了(le)(le),拆(chai)除(chu)(chu)樓房。利(li)用(yong)(yong)炸(zha)爆(bao)炸(zha)產生的(de)(de)(de)(de)巨大(da)能量破(po)(po)壞某種物(wu)體的(de)(de)(de)(de)原結(jie)構,這種"破(po)(po)壞"效(xiao)果不是(shi)其他方(fang)(fang)法能代(dai)替的(de)(de)(de)(de),它雖然不是(shi)獨立完成一個工(gong)(gong)程(cheng),但卻是(shi)一個重(zhong)要(yao)的(de)(de)(de)(de)工(gong)(gong)序,特別是(shi)石方(fang)(fang)開(kai)挖、礦山(shan)(shan)(shan)開(kai)采等工(gong)(gong)程(cheng)缺少了(le)(le)這個工(gong)(gong)序還不行(xing)。中國目前有發達的(de)(de)(de)(de)鐵路(lu)和公(gong)路(lu)交通網,可以想象,當(dang)初在修這些(xie)路(lu)的(de)(de)(de)(de)時候(hou)會遇到許多(duo)高山(shan)(shan)(shan)峻(jun)嶺,一座大(da)山(shan)(shan)(shan)橫(heng)在兩地之間,想要(yao)修路(lu),就必須(xu)讓這座山(shan)(shan)(shan)消失,這個時候(hou)聚(ju)能管爆(bao)破(po)(po)就起到決(jue)定性作(zuo)用(yong)(yong)了(le)(le)。