各(ge)種爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)、爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)器(qi)材銷毀以及(ji)爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)器(qi)材意外爆(bao)(bao)(bao)(bao)(bao)(bao)炸時(shi),爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)源與人員和其(qi)(qi)他保護(hu)對(dui)象之間的(de)(de)(de)安(an)(an)全(quan)距(ju)(ju)離(li)(li)(li)稱為(wei)(wei)爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)安(an)(an)全(quan)距(ju)(ju)離(li)(li)(li)。爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)安(an)(an)全(quan)距(ju)(ju)離(li)(li)(li)應(ying)取各(ge)種爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)效應(ying)(地震、沖(chong)擊(ji)波、飛石、有毒氣體等(deng)(deng))分別核(he)定(ding)(ding)的(de)(de)(de)大值。爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)時(shi),必然產生爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)地震、空氣沖(chong)擊(ji)波、碎(sui)石飛散(san)及(ji)有害(hai)氣體,因此,爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)設計時(shi)必須確定(ding)(ding)爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)危害(hai)范圍,并確定(ding)(ding)爆(bao)(bao)(bao)(bao)(bao)(bao)點(dian)到附近人員、設備、建筑物及(ji)井巷等(deng)(deng)的(de)(de)(de)安(an)(an)全(quan),這(zhe)一段距(ju)(ju)離(li)(li)(li)就稱為(wei)(wei)爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)安(an)(an)全(quan)距(ju)(ju)離(li)(li)(li)。如何(he)控(kong)制好這(zhe)段距(ju)(ju)離(li)(li)(li)就顯的(de)(de)(de)尤為(wei)(wei)重要。為(wei)(wei)保證爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)安(an)(an)全(quan),爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)地點(dian)與人員或其(qi)(qi)他應(ying)保護(hu)對(dui)象之間必須保持(chi)短的(de)(de)(de)相隔長(chang)度。爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)有害(hai)效應(ying)隨距(ju)(ju)離(li)(li)(li)的(de)(de)(de)增加(jia)有規律地衰減,用距(ju)(ju)離(li)(li)(li)作為(wei)(wei)安(an)(an)全(quan)尺度可限(xian)定(ding)(ding)爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)有害(hai)效應(ying)在允許限(xian)度之內。中國《爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)安(an)(an)全(quan)規程》規定(ding)(ding)了爆(bao)(bao)(bao)(bao)(bao)(bao)破(po)(po)(po)地震安(an)(an)全(quan)距(ju)(ju)離(li)(li)(li),個別飛散(san)物安(an)(an)全(quan)距(ju)(ju)離(li)(li)(li),以及(ji)爆(bao)(bao)(bao)(bao)(bao)(bao)炸沖(chong)擊(ji)波的(de)(de)(de)安(an)(an)全(quan)距(ju)(ju)離(li)(li)(li)。
專業c型聚能管采用一種抗靜電阻燃的特種塑料管、異形雙槽聚能管,根據炮眼深度可長可短。韶關c型聚能管是兩個相似半(ban)(ban)(ban)壁(bi)管(guan)組成(cheng),半(ban)(ban)(ban)壁(bi)管(guan)中央有個凹(ao)進去的槽(cao)叫做'聚(ju)能(neng)(neng)槽(cao)",使用聚(ju)能(neng)(neng)管(guan)光面爆(bao)(bao)破成(cheng)型效果(guo)好,開(kai)挖輪廓線平順整(zheng)齊,圍(wei)巖擾動減(jian)少(shao)(shao)(shao)、超(chao)欠挖明(ming)顯(xian)改善,有利于支(zhi)護工(gong)(gong)(gong)序施(shi)工(gong)(gong)(gong),同時混(hun)凝土回填成(cheng)本(ben)大為降低(di)。鑿孔率減(jian)少(shao)(shao)(shao)30%,大大降低(di)了(le)爆(bao)(bao)破作(zuo)業(ye)工(gong)(gong)(gong)班的勞動量(liang):鉆孔縮短(duan)30分鐘、少(shao)(shao)(shao)打(da)眼、出渣量(liang)減(jian)少(shao)(shao)(shao),降低(di)了(le)材料成(cheng)本(ben)、減(jian)少(shao)(shao)(shao)工(gong)(gong)(gong)時消(xiao)耗、勞動效率明(ming)顯(xian)提(ti)高(gao),周邊眼爆(bao)(bao)破成(cheng)本(ben)降低(di)30%以(yi)上,半(ban)(ban)(ban)眼痕保留(liu)率高(gao)達(da)85%以(yi)上。pvc爆(bao)(bao)破聚(ju)能(neng)(neng)管(guan)主(zhu)要應用于隧(sui)道、煤礦(kuang)(kuang)、鐵礦(kuang)(kuang)等需要進行(xing)光面爆(bao)(bao)破施(shi)工(gong)(gong)(gong)的工(gong)(gong)(gong)程。采用聚(ju)能(neng)(neng)管(guan)的光面爆(bao)(bao)破可減(jian)少(shao)(shao)(shao)鉆孔,擴大孔距,減(jian)少(shao)(shao)(shao)導爆(bao)(bao)管(guan)用量(liang),減(jian)少(shao)(shao)(shao)超(chao)挖,減(jian)少(shao)(shao)(shao)噴漿,提(ti)高(gao)半(ban)(ban)(ban)孔率,既(ji)節省(sheng)了(le)成(cheng)本(ben)又提(ti)高(gao)了(le)施(shi)工(gong)(gong)(gong)效率。
水(shui)壓光面爆破技(ji)術(shu)在隧道掘進(jin)(jin)作業中的(de)(de)(de)(de)實際應用。提升光面爆破水(shui)平、嚴抓隧道超挖管控進(jin)(jin)行(xing)了介紹。聚能(neng)水(shui)壓光面爆破工(gong)(gong)(gong)藝技(ji)術(shu)很成熟、可(ke)操(cao)作性很強、材料成本很低、施(shi)(shi)工(gong)(gong)(gong)速(su)度很快、節能(neng)環保效果很顯著、經濟(ji)效益(yi)社會效益(yi)很高(gao)。一是(shi)要(yao)提高(gao)對(dui)推(tui)廣(guang)該項技(ji)術(shu)重要(yao)性和(he)必(bi)然性的(de)(de)(de)(de)認(ren)識(shi)(shi);二是(shi)要(yao)樹(shu)立必(bi)須采取聚能(neng)水(shui)壓光面爆破的(de)(de)(de)(de)意識(shi)(shi);三(san)是(shi)要(yao)堅持(chi)培訓、示(shi)范(fan)、監(jian)(jian)督“三(san)位一體”;四是(shi)要(yao)制(zhi)定(ding)切實的(de)(de)(de)(de)獎懲制(zhi)度;五是(shi)要(yao)建(jian)立檢查監(jian)(jian)督機制(zhi),持(chi)續(xu)促進(jin)(jin)該項技(ji)術(shu)的(de)(de)(de)(de)深入推(tui)廣(guang)。在隧道施(shi)(shi)工(gong)(gong)(gong)的(de)(de)(de)(de)現場管理、科技(ji)創新(xin)、人才(cai)培養(yang)、經濟(ji)效益(yi)等方面的(de)(de)(de)(de)不足。建(jian)議對(dui)施(shi)(shi)工(gong)(gong)(gong)一線基(ji)礎技(ji)術(shu)工(gong)(gong)(gong)作扎實推(tui)進(jin)(jin);對(dui)新(xin)工(gong)(gong)(gong)藝、先進(jin)(jin)工(gong)(gong)(gong)法(fa)要(yao)深入學習鉆研;對(dui)消極懈怠、故步自(zi)封的(de)(de)(de)(de)思(si)想要(yao)堅決抵(di)制(zhi)。
給大(da)家介紹下爆(bao)破(po)聚(ju)能(neng)管的(de)(de)(de)技(ji)術原理∶炸藥爆(bao)炸產生(sheng)的(de)(de)(de)爆(bao)轟波通過聚(ju)能(neng)管的(de)(de)(de)聚(ju)能(neng)槽,將炸藥的(de)(de)(de)動(dong)能(neng)、勢能(neng)轉換成(cheng)高(gao)壓(ya)、高(gao)速、高(gao)能(neng)的(de)(de)(de)射(she)流,切割演示成(cheng)縫(feng)。射(she)流在孔壁產生(sheng)射(she)流壓(ya)力達7000MPa,巖(yan)石動(dong)載(zai)抗(kang)壓(ya)強(qiang)度為200MPa,抗(kang)拉(la)為1/8~1/10的(de)(de)(de)抗(kang)壓(ya)強(qiang)度,相鄰兩(liang)炮孔互為鄰空面,疊加(jia)后的(de)(de)(de)壓(ya)縮波變為稀疏波,在兩(liang)炮眼連線上使(shi)巖(yan)石結構斷裂,形(xing)成(cheng)裂紋。準靜(jing)態氣體(ti)膨脹,靜(jing)態壓(ya)力在兩(liang)炮孔最(zui)短連線兩(liang)側產生(sheng)拉(la)力使(shi)巖(yan)石裂縫(feng)進一步(bu)擴展(zhan)。根據(ju)爆(bao)破(po)應力集(ji)中氣刃作用原則,爆(bao)破(po)氣體(ti)沿裂縫(feng)進一步(bu)擴大(da)貫通,拋落巖(yan)石。
在(zai)鐵路(lu)(lu)(lu)、礦(kuang)山(shan)、水(shui)庫(ku)等大(da)(da)型工(gong)(gong)程中,爆破技(ji)術的(de)(de)作用(yong)很關鍵很重要。采(cai)礦(kuang)修(xiu)路(lu)(lu)(lu)的(de)(de)開(kai)(kai)(kai)山(shan)挖隧道(dao),城市對舊建筑(zhu)物(wu)的(de)(de)拆除,都會(hui)用(yong)到爆破技(ji)術。隨著經濟的(de)(de)發展、工(gong)(gong)程建設的(de)(de)增(zeng)多,爆破引起(qi)了(le)人們更多的(de)(de)關注。爆破聚能管作為一種(zhong)科學技(ji)術,應用(yong)很廣,但(dan)在(zai)工(gong)(gong)程上的(de)(de)應用(yong)無疑是(shi)(shi)重要、常見(jian)的(de)(de),采(cai)礦(kuang)開(kai)(kai)(kai)山(shan),修(xiu)鐵路(lu)(lu)(lu)、公(gong)路(lu)(lu)(lu)用(yong)鉆爆法來開(kai)(kai)(kai)掘隧道(dao),水(shui)利工(gong)(gong)程上也用(yong)一些,城市里面也使用(yong)了(le),拆除樓(lou)房。利用(yong)炸爆炸產(chan)生的(de)(de)巨大(da)(da)能量破壞某種(zhong)物(wu)體的(de)(de)原結構,這(zhe)(zhe)種(zhong)"破壞"效果不(bu)是(shi)(shi)其他方法能代替的(de)(de),它(ta)雖然(ran)不(bu)是(shi)(shi)獨立完成(cheng)一個工(gong)(gong)程,但(dan)卻是(shi)(shi)一個重要的(de)(de)工(gong)(gong)序(xu),特別是(shi)(shi)石方開(kai)(kai)(kai)挖、礦(kuang)山(shan)開(kai)(kai)(kai)采(cai)等工(gong)(gong)程缺少(shao)了(le)這(zhe)(zhe)個工(gong)(gong)序(xu)還(huan)不(bu)行。中國目(mu)前有發達的(de)(de)鐵路(lu)(lu)(lu)和公(gong)路(lu)(lu)(lu)交通(tong)網,可(ke)以想象,當初(chu)在(zai)修(xiu)這(zhe)(zhe)些路(lu)(lu)(lu)的(de)(de)時(shi)候(hou)會(hui)遇到許(xu)多高(gao)山(shan)峻(jun)嶺,一座(zuo)(zuo)大(da)(da)山(shan)橫在(zai)兩地之間(jian),想要修(xiu)路(lu)(lu)(lu),就必須讓(rang)這(zhe)(zhe)座(zuo)(zuo)山(shan)消失(shi),這(zhe)(zhe)個時(shi)候(hou)聚能管爆破就起(qi)到決(jue)定性(xing)作用(yong)了(le)。