在(zai)鐵(tie)(tie)(tie)路(lu)(lu)(lu)、礦山(shan)、水庫等大型工(gong)程(cheng)中(zhong)(zhong),爆(bao)(bao)(bao)破技術的(de)(de)(de)作用(yong)(yong)很(hen)關鍵很(hen)重(zhong)(zhong)要(yao)。采礦修(xiu)路(lu)(lu)(lu)的(de)(de)(de)開山(shan)挖(wa)(wa)隧道(dao)(dao),城(cheng)市(shi)對舊建筑物(wu)的(de)(de)(de)拆(chai)除(chu)(chu),都會用(yong)(yong)到爆(bao)(bao)(bao)破技術。隨(sui)著(zhu)經濟的(de)(de)(de)發展、工(gong)程(cheng)建設的(de)(de)(de)增多(duo)(duo),爆(bao)(bao)(bao)破引起了人(ren)們更多(duo)(duo)的(de)(de)(de)關注。爆(bao)(bao)(bao)破聚能(neng)管作為一(yi)種(zhong)科學技術,應用(yong)(yong)很(hen)廣(guang),但在(zai)工(gong)程(cheng)上的(de)(de)(de)應用(yong)(yong)無(wu)疑是(shi)(shi)重(zhong)(zhong)要(yao)、常見的(de)(de)(de),采礦開山(shan),修(xiu)鐵(tie)(tie)(tie)路(lu)(lu)(lu)、公(gong)路(lu)(lu)(lu)用(yong)(yong)鉆(zhan)爆(bao)(bao)(bao)法來開掘隧道(dao)(dao),水利工(gong)程(cheng)上也用(yong)(yong)一(yi)些(xie)(xie),城(cheng)市(shi)里面(mian)也使用(yong)(yong)了,拆(chai)除(chu)(chu)樓房。利用(yong)(yong)炸爆(bao)(bao)(bao)炸產(chan)生的(de)(de)(de)巨大能(neng)量破壞(huai)某種(zhong)物(wu)體的(de)(de)(de)原(yuan)結(jie)構,這種(zhong)"破壞(huai)"效果不(bu)是(shi)(shi)其他方(fang)法能(neng)代(dai)替(ti)的(de)(de)(de),它雖然不(bu)是(shi)(shi)獨立完成一(yi)個(ge)(ge)工(gong)程(cheng),但卻(que)是(shi)(shi)一(yi)個(ge)(ge)重(zhong)(zhong)要(yao)的(de)(de)(de)工(gong)序,特別是(shi)(shi)石方(fang)開挖(wa)(wa)、礦山(shan)開采等工(gong)程(cheng)缺少了這個(ge)(ge)工(gong)序還不(bu)行。中(zhong)(zhong)國目前有(you)發達的(de)(de)(de)鐵(tie)(tie)(tie)路(lu)(lu)(lu)和公(gong)路(lu)(lu)(lu)交通網,可以想(xiang)象,當(dang)初在(zai)修(xiu)這些(xie)(xie)路(lu)(lu)(lu)的(de)(de)(de)時候會遇到許多(duo)(duo)高山(shan)峻(jun)嶺,一(yi)座大山(shan)橫(heng)在(zai)兩地之間,想(xiang)要(yao)修(xiu)路(lu)(lu)(lu),就必須讓(rang)這座山(shan)消失(shi),這個(ge)(ge)時候聚能(neng)管爆(bao)(bao)(bao)破就起到決(jue)定性作用(yong)(yong)了。
在工程爆破中,礦用型雙向聚能管廠家常用的起爆方法有:電力起爆法、導火索起爆法、導爆索起爆法、導爆管起爆法。電力起爆法是利用電能使雷管爆炸,進而起爆炸藥的起爆芳法。它所需的器材有:電雷管、導線和起爆電源。電爆網路的連接形式,要根據爆破方法、爆破規模、工程的重要性、所選起爆電源及其起爆能力等進行選擇,金華礦用型雙向聚能管基本(ben)連接(jie)方式(shi)有:串(chuan)聯(lian)(lian)(lian)、并(bing)聯(lian)(lian)(lian)、串(chuan)并(bing)聯(lian)(lian)(lian)和并(bing)串(chuan)聯(lian)(lian)(lian)等。電(dian)(dian)(dian)(dian)力(li)起(qi)爆(bao)(bao)(bao)(bao)(bao)法(fa)具有較安全、可靠(kao)、準確、高效等優點(dian),在國內(nei)外仍占有較大比(bi)重。在大、中型爆(bao)(bao)(bao)(bao)(bao)破中,主要(yao)仍是(shi)用(yong)電(dian)(dian)(dian)(dian)力(li)起(qi)爆(bao)(bao)(bao)(bao)(bao)。特(te)別是(shi)在有瓦斯、礦塵爆(bao)(bao)(bao)(bao)(bao)炸的環(huan)境中,電(dian)(dian)(dian)(dian)力(li)起(qi)爆(bao)(bao)(bao)(bao)(bao)是(shi)主要(yao)的起(qi)爆(bao)(bao)(bao)(bao)(bao)方法(fa)。但電(dian)(dian)(dian)(dian)力(li)起(qi)爆(bao)(bao)(bao)(bao)(bao)容易受(shou)各(ge)種電(dian)(dian)(dian)(dian)信號的干擾而發(fa)生早爆(bao)(bao)(bao)(bao)(bao),因此(ci)在有雜散電(dian)(dian)(dian)(dian)、靜(jing)電(dian)(dian)(dian)(dian)、雷電(dian)(dian)(dian)(dian)、射頻電(dian)(dian)(dian)(dian)、高壓感(gan)應電(dian)(dian)(dian)(dian)的環(huan)境中,不能使用(yong)普通電(dian)(dian)(dian)(dian)雷管。
預裂(lie)與(yu)光面爆(bao)(bao)破(po)(po)(po)(po)技術的(de)(de)歷史(shi)與(yu)現(xian)狀(zhuang):預裂(lie)爆(bao)(bao)破(po)(po)(po)(po)是(shi)沿(yan)(yan)設計(ji)開挖(wa)邊界布置密集(ji)炮孔(kong),采(cai)取不(bu)耦合裝藥(yao)或裝填低威力(li)(li)炸藥(yao),在主爆(bao)(bao)區(qu)(qu)之(zhi)前起(qi)爆(bao)(bao),從而在爆(bao)(bao)區(qu)(qu)與(yu)保留(liu)(liu)區(qu)(qu)之(zhi)間形成(cheng)(cheng)預裂(lie)縫,以減弱主爆(bao)(bao)破(po)(po)(po)(po)對保留(liu)(liu)巖(yan)體的(de)(de)破(po)(po)(po)(po)壞并形成(cheng)(cheng)平整(zheng)(zheng)輪(lun)廓面的(de)(de)爆(bao)(bao)破(po)(po)(po)(po)作(zuo)業(ye)。光面爆(bao)(bao)破(po)(po)(po)(po)是(shi)沿(yan)(yan)設計(ji)開挖(wa)邊界布設密集(ji)炮孔(kong),采(cai)用(yong)不(bu)耦合裝藥(yao)或裝填低威力(li)(li)炸藥(yao),在主爆(bao)(bao)區(qu)(qu)爆(bao)(bao)破(po)(po)(po)(po)之(zhi)后起(qi)爆(bao)(bao)的(de)(de)以形成(cheng)(cheng)平整(zheng)(zheng)的(de)(de)開挖(wa)輪(lun)廓面的(de)(de)爆(bao)(bao)破(po)(po)(po)(po)作(zuo)業(ye)。爆(bao)(bao)破(po)(po)(po)(po)技術的(de)(de)發展是(shi)先出(chu)現(xian)光面爆(bao)(bao)破(po)(po)(po)(po),然后衍生發展為預裂(lie)爆(bao)(bao)破(po)(po)(po)(po)。聚能管(guan)國(guo)內歷史(shi)與(yu)現(xian)狀(zhuang),我國(guo)于(yu)1964~1965年(nian)在湖北陸水水電站施工中做過(guo)淺孔(kong)預裂(lie)爆(bao)(bao)破(po)(po)(po)(po)試(shi)驗,1965年(nian)鐵道部(bu)門在成(cheng)(cheng)昆鐵路建(jian)設中開始試(shi)驗光面爆(bao)(bao)破(po)(po)(po)(po),1977年(nian)在西(xi)延線張家船工點,全長近(jin)200m的(de)(de)2000m2路塹(qian)邊坡全部(bu)采(cai)用(yong)光面爆(bao)(bao)破(po)(po)(po)(po),爆(bao)(bao)破(po)(po)(po)(po)后邊坡平整(zheng)(zheng)穩定(ding),殘(can)留(liu)(liu)的(de)(de)半孔(kong)清晰(xi)可(ke)見,是(shi)鐵路建(jian)設中采(cai)用(yong)路塹(qian)光面爆(bao)(bao)破(po)(po)(po)(po)。
給大家介(jie)紹下爆破(po)聚能(neng)管(guan)的(de)技術原(yuan)理∶炸藥爆炸產生的(de)爆轟(hong)波通過聚能(neng)管(guan)的(de)聚能(neng)槽,將炸藥的(de)動能(neng)、勢能(neng)轉換成高壓、高速、高能(neng)的(de)射流,切割演示成縫(feng)。射流在孔(kong)壁(bi)產生射流壓力(li)(li)達7000MPa,巖(yan)石(shi)動載抗(kang)壓強度為200MPa,抗(kang)拉(la)(la)為1/8~1/10的(de)抗(kang)壓強度,相鄰兩(liang)炮(pao)孔(kong)互為鄰空(kong)面,疊加后(hou)的(de)壓縮波變為稀疏波,在兩(liang)炮(pao)眼連線(xian)上使(shi)巖(yan)石(shi)結構斷裂(lie)(lie),形成裂(lie)(lie)紋。準靜(jing)態氣(qi)體(ti)膨脹(zhang),靜(jing)態壓力(li)(li)在兩(liang)炮(pao)孔(kong)最短連線(xian)兩(liang)側(ce)產生拉(la)(la)力(li)(li)使(shi)巖(yan)石(shi)裂(lie)(lie)縫(feng)進一(yi)步擴展。根據爆破(po)應力(li)(li)集中氣(qi)刃作用原(yuan)則,爆破(po)氣(qi)體(ti)沿裂(lie)(lie)縫(feng)進一(yi)步擴大貫通,拋落巖(yan)石(shi)。
聚(ju)(ju)能(neng)(neng)藥(yao)(yao)(yao)包(bao)破(po)(po)(po)碎法(fa)特點(dian)是:不(bu)需要(yao)打眼,因而不(bu)需要(yao)購買打眼設備和(he)(he)(he)動(dong)力(li)(li)設備;施(shi)工(gong)(gong)簡(jian)單(dan),施(shi)工(gong)(gong)進度比淺(qian)眼爆(bao)(bao)破(po)(po)(po)法(fa)快安全(quan)性比普(pu)通淺(qian)眼爆(bao)(bao)破(po)(po)(po)法(fa)和(he)(he)(he)普(pu)通裸露藥(yao)(yao)(yao)包(bao)法(fa)好;勞動(dong)強度比淺(qian)眼爆(bao)(bao)破(po)(po)(po)法(fa)低。制(zhi)造(zao)聚(ju)(ju)能(neng)(neng)藥(yao)(yao)(yao)包(bao)所(suo)采(cai)用(yong)的(de)(de)(de)炸(zha)藥(yao)(yao)(yao)有:黑索金和(he)(he)(he)梯恩(en)梯混(hun)合熔鑄(zhu)型(xing);乳化油炸(zha)藥(yao)(yao)(yao)和(he)(he)(he)黑索金混(hun)裝(zhuang)型(xing)和(he)(he)(he)二(er)號(hao)巖石硝(xiao)鉸炸(zha)藥(yao)(yao)(yao)壓制(zhi)型(xing)。根據使用(yong)的(de)(de)(de)結果證明,選用(yong)密(mi)度較(jiao)(jiao)大和(he)(he)(he)爆(bao)(bao)速較(jiao)(jiao)高的(de)(de)(de)炸(zha)藥(yao)(yao)(yao)制(zhi)造(zao)聚(ju)(ju)能(neng)(neng)藥(yao)(yao)(yao)包(bao)能(neng)(neng)獲得較(jiao)(jiao)好的(de)(de)(de)破(po)(po)(po)碎效(xiao)果。這主要(yao)是由于它加(jia)工(gong)(gong)簡(jian)單(dan)和(he)(he)(he)破(po)(po)(po)碎能(neng)(neng)力(li)(li)較(jiao)(jiao)大。在礦山由于二(er)次破(po)(po)(po)碎消耗的(de)(de)(de)藥(yao)(yao)(yao)包(bao)較(jiao)(jiao)多,而且金屬藥(yao)(yao)(yao)型(xing)罩的(de)(de)(de)加(jia)工(gong)(gong)費工(gong)(gong)又費材料,所(suo)以多不(bu)采(cai)用(yong)藥(yao)(yao)(yao)型(xing)罩。國內生產的(de)(de)(de)一種(zhong)用(yong)于破(po)(po)(po)碎大塊的(de)(de)(de)聚(ju)(ju)能(neng)(neng)藥(yao)(yao)(yao)包(bao),裝(zhuang)置聚(ju)(ju)能(neng)(neng)藥(yao)(yao)(yao)包(bao)時,要(yao)將(jiang)藥(yao)(yao)(yao)包(bao)垂直裝(zhuang)在大塊的(de)(de)(de)頂面上,聚(ju)(ju)能(neng)(neng)穴朝下。藥(yao)(yao)(yao)包(bao)位置應選在頂面的(de)(de)(de)幾何中心(xin)或附(fu)近較(jiao)(jiao)平整的(de)(de)(de)地點(dian)。然后在上面覆蓋泥(ni)沙。