水(shui)壓光(guang)面(mian)爆(bao)(bao)破(po)(po)較水(shui)壓光(guang)面(mian)爆(bao)(bao)破(po)(po),在(zai)周邊(bian)眼(yan)單循(xun)環(huan)火工品使(shi)用(yong)量(liang)上節約費用(yong)8.3%,周邊(bian)眼(yan)鉆孔(kong)數量(liang)從39個(ge)下(xia)降(jiang)(jiang)為(wei)23個(ge)費用(yong)節約41%,混凝土(tu)噴射每延(yan)米節約1.37立(li)方米。水(shui)壓光(guang)面(mian)爆(bao)(bao)破(po)(po)比水(shui)壓光(guang)面(mian)爆(bao)(bao)破(po)(po)每循(xun)環(huan)節約費用(yong)258.4元,即每延(yan)米節約76較元,節約費用(yong)比例(li)達32%。此外,聚(ju)(ju)能(neng)(neng)管水(shui)壓光(guang)面(mian)爆(bao)(bao)破(po)(po)能(neng)(neng)有效(xiao)降(jiang)(jiang)低隧道內(nei)石渣(zha)塊度(du)和(he)粉塵含量(liang),還可使(shi)通風時間有效(xiao)縮短33%。聚(ju)(ju)能(neng)(neng)管光(guang)面(mian)爆(bao)(bao)破(po)(po)工藝(yi)技(ji)(ji)(ji)術(shu)很成熟、可操作(zuo)性(xing)很強(qiang)、材(cai)料成本很低、施工速度(du)很快(kuai)、節能(neng)(neng)環(huan)保效(xiao)果很顯著、經(jing)濟效(xiao)益(yi)社會效(xiao)益(yi)很高。聚(ju)(ju)能(neng)(neng)管定(ding)向爆(bao)(bao)破(po)(po)技(ji)(ji)(ji)術(shu)是近(jin)幾年(nian)發展(zhan)起來的(de)一(yi)項掘進新技(ji)(ji)(ji)術(shu),這種爆(bao)(bao)破(po)(po)技(ji)(ji)(ji)術(shu)與傳統的(de)光(guang)面(mian)爆(bao)(bao)破(po)(po)技(ji)(ji)(ji)術(shu)有一(yi)定(ding)的(de)差別,聚(ju)(ju)能(neng)(neng)管定(ding)向爆(bao)(bao)破(po)(po)原理是在(zai)巷道周邊(bian)眼(yan)中,將(jiang)炸裝在(zai)聚(ju)(ju)能(neng)(neng)管中起爆(bao)(bao),爆(bao)(bao)破(po)(po)時利用(yong)聚(ju)(ju)能(neng)(neng)管的(de)聚(ju)(ju)能(neng)(neng)作(zuo)用(yong),以減少(shao)裂(lie)(lie)隙(xi)的(de)數量(liang)和(he)控(kong)制(zhi)優(you)勢裂(lie)(lie)隙(xi)的(de)發展(zhan)方向。
專用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。鶴壁c型聚能管是兩(liang)個相似半壁管組成(cheng),半壁管中央有個凹進去(qu)的槽叫做'聚(ju)能槽",使用(yong)聚(ju)能管光面(mian)(mian)爆(bao)(bao)破成(cheng)型效果(guo)好,開挖輪廓線平(ping)順整齊,圍巖擾動減(jian)少(shao)(shao)(shao)、超欠挖明顯改善,有利于支(zhi)護(hu)工(gong)(gong)序施工(gong)(gong),同時混(hun)凝土回填成(cheng)本大(da)為(wei)降(jiang)低。鑿孔率(lv)減(jian)少(shao)(shao)(shao)30%,大(da)大(da)降(jiang)低了(le)(le)爆(bao)(bao)破作業(ye)工(gong)(gong)班的勞動量(liang)(liang):鉆孔縮(suo)短(duan)30分鐘、少(shao)(shao)(shao)打眼(yan)、出渣量(liang)(liang)減(jian)少(shao)(shao)(shao),降(jiang)低了(le)(le)材料成(cheng)本、減(jian)少(shao)(shao)(shao)工(gong)(gong)時消耗、勞動效率(lv)明顯提高,周邊眼(yan)爆(bao)(bao)破成(cheng)本降(jiang)低30%以上,半眼(yan)痕保留率(lv)高達85%以上。pvc爆(bao)(bao)破聚(ju)能管主要(yao)應用(yong)于隧道、煤礦、鐵礦等需要(yao)進行光面(mian)(mian)爆(bao)(bao)破施工(gong)(gong)的工(gong)(gong)程。采用(yong)聚(ju)能管的光面(mian)(mian)爆(bao)(bao)破可減(jian)少(shao)(shao)(shao)鉆孔,擴(kuo)大(da)孔距,減(jian)少(shao)(shao)(shao)導爆(bao)(bao)管用(yong)量(liang)(liang),減(jian)少(shao)(shao)(shao)超挖,減(jian)少(shao)(shao)(shao)噴(pen)漿(jiang),提高半孔率(lv),既(ji)節省(sheng)了(le)(le)成(cheng)本又提高了(le)(le)施工(gong)(gong)效率(lv)。
在(zai)建造隧(sui)道(dao)的(de)時候,人們首先想到的(de)個方式,就是使用爆(bao)(bao)破(po)技(ji)術(shu),開山挖隧(sui)道(dao)修路(lu),常(chang)規(gui)爆(bao)(bao)破(po)技(ji)術(shu)需要使用數以噸計的(de)炸(zha),炸(zha)的(de)威力十(shi)分(fen)巨大(da),但是在(zai)炸(zha)完之后,空(kong)氣中全是煙塵(chen),根本無法進入,另外(wai)常(chang)規(gui)爆(bao)(bao)破(po)炸(zha)出來(lai)的(de)輪廓線(xian)凹凸不平,后期常(chang)常(chang)需要工(gong)人進一步修補輪廓線(xian)才能(neng)進行下一道(dao)工(gong)序,耗(hao)時耗(hao)力,那么有沒(mei)有其(qi)他的(de)方式比(bi)常(chang)規(gui)爆(bao)(bao)破(po)技(ji)術(shu)更好呢(ni)?2018年3月,央視報道(dao)了一場隧(sui)道(dao)爆(bao)(bao)破(po)對比(bi)實(shi)驗(yan),實(shi)驗(yan)采用兩種爆(bao)(bao)破(po)技(ji)術(shu),滴(di)喲中是使用炸(zha)的(de)常(chang)規(gui)爆(bao)(bao)破(po)技(ji)術(shu),第二種則(ze)是國人新發明的(de)聚能(neng)水(shui)(shui)壓(ya)光面(mian)爆(bao)(bao)破(po)技(ji)術(shu),隨(sui)著聲(sheng)聲(sheng)巨響,這場對比(bi)試驗(yan)的(de)結果超乎所有人的(de)意料,聚能(neng)水(shui)(shui)壓(ya)爆(bao)(bao)破(po)技(ji)術(shu)的(de)爆(bao)(bao)炸(zha)效果更好,而(er)且爆(bao)(bao)破(po)產生的(de)水(shui)(shui)霧(wu)能(neng)將煙塵(chen)覆(fu)蓋,起到降塵(chen)的(de)作用,這項爆(bao)(bao)破(po)新方式得(de)到了觀(guan)眾們的(de)認可(ke)。
我國于1983年制定了(le)《水(shui)(shui)(shui)工(gong)(gong)建(jian)筑物(wu)巖行基礎(chu)開挖工(gong)(gong)程(cheng)(cheng)(cheng)施(shi)(shi)工(gong)(gong)技(ji)(ji)(ji)術(shu)規(gui)范》(sD 121l一1983)。自此,在(zai)水(shui)(shui)(shui)利(li)水(shui)(shui)(shui)電建(jian)設(she)(she)中預裂爆(bao)(bao)破(po)(po)(po)(po)(po)與(yu)光(guang)(guang)面(mian)(mian)爆(bao)(bao)破(po)(po)(po)(po)(po)已(yi)成為必須進行的(de)(de)保(bao)護邊坡(po)(po)(po)(po)質量(liang)的(de)(de)爆(bao)(bao)破(po)(po)(po)(po)(po)開挖技(ji)(ji)(ji)術(shu)措施(shi)(shi)。此后在(zai)此基礎(chu)上修訂(ding)的(de)(de)《水(shui)(shui)(shui)工(gong)(gong)建(jian)筑物(wu)巖石(shi)基礎(chu)開挖工(gong)(gong)程(cheng)(cheng)(cheng)施(shi)(shi)工(gong)(gong)技(ji)(ji)(ji)術(shu)規(gui)范》(SL 47一1994)以及在(zai)《水(shui)(shui)(shui)電水(shui)(shui)(shui)利(li)爆(bao)(bao)破(po)(po)(po)(po)(po)工(gong)(gong)程(cheng)(cheng)(cheng)施(shi)(shi)工(gong)(gong)技(ji)(ji)(ji)術(shu)規(gui)范》(DL/T 5135—2001)和(he)《水(shui)(shui)(shui)工(gong)(gong)建(jian)筑物(wu)巖石(shi)基礎(chu)開挖工(gong)(gong)程(cheng)(cheng)(cheng)施(shi)(shi)工(gong)(gong)技(ji)(ji)(ji)術(shu)規(gui)范》(DL/T 5389~2007)中預裂爆(bao)(bao)破(po)(po)(po)(po)(po)與(yu)光(guang)(guang)面(mian)(mian)爆(bao)(bao)破(po)(po)(po)(po)(po)均(jun)被編(bian)入并有所改進,DL/T 5135—2001正在(zai)修編(bian)為DL/T 5135—2012。鐵道部也不僅規(gui)定了(le)凡是Ⅲ級以上的(de)(de)巖石(shi)邊坡(po)(po)(po)(po),設(she)(she)計邊坡(po)(po)(po)(po)坡(po)(po)(po)(po)度為1:0.1~1:0.75,在(zai)邊坡(po)(po)(po)(po)部位的(de)(de)爆(bao)(bao)破(po)(po)(po)(po)(po)設(she)(she)計和(he)施(shi)(shi)工(gong)(gong)都應(ying)采(cai)用(yong)光(guang)(guang)面(mian)(mian)爆(bao)(bao)破(po)(po)(po)(po)(po)或預裂爆(bao)(bao)破(po)(po)(po)(po)(po),并闡述了(le)光(guang)(guang)面(mian)(mian)(預裂)爆(bao)(bao)破(po)(po)(po)(po)(po)施(shi)(shi)工(gong)(gong)技(ji)(ji)(ji)術(shu)設(she)(she)計的(de)(de)原(yuan)則和(he)參數(shu)(shu)、安全措施(shi)(shi),而且還明確了(le)路塹邊坡(po)(po)(po)(po)光(guang)(guang)面(mian)(mian)(預裂)爆(bao)(bao)破(po)(po)(po)(po)(po)項目(mu)質量(liang)驗收檢測數(shu)(shu)量(liang)和(he)檢測方法。無疑該(gai)規(gui)程(cheng)(cheng)(cheng)的(de)(de)實施(shi)(shi),有力地推動和(he)促進了(le)光(guang)(guang)面(mian)(mian)(預裂)爆(bao)(bao)破(po)(po)(po)(po)(po)技(ji)(ji)(ji)術(shu)在(zai)鐵路建(jian)設(she)(she)中的(de)(de)應(ying)用(yong)與(yu)發展。
給大家介(jie)紹下爆(bao)破(po)聚(ju)能(neng)(neng)管的(de)技術原理∶炸(zha)藥爆(bao)炸(zha)產生(sheng)的(de)爆(bao)轟波通(tong)過聚(ju)能(neng)(neng)管的(de)聚(ju)能(neng)(neng)槽,將炸(zha)藥的(de)動能(neng)(neng)、勢能(neng)(neng)轉換成高壓(ya)、高速、高能(neng)(neng)的(de)射(she)(she)流,切割演示成縫(feng)。射(she)(she)流在孔(kong)壁產生(sheng)射(she)(she)流壓(ya)力(li)達7000MPa,巖(yan)石(shi)(shi)動載抗(kang)壓(ya)強度為200MPa,抗(kang)拉為1/8~1/10的(de)抗(kang)壓(ya)強度,相鄰兩(liang)(liang)炮(pao)孔(kong)互(hu)為鄰空(kong)面,疊加(jia)后(hou)的(de)壓(ya)縮波變為稀疏波,在兩(liang)(liang)炮(pao)眼連線上(shang)使巖(yan)石(shi)(shi)結(jie)構斷裂,形成裂紋。準靜態氣(qi)(qi)體膨脹(zhang),靜態壓(ya)力(li)在兩(liang)(liang)炮(pao)孔(kong)最短連線兩(liang)(liang)側產生(sheng)拉力(li)使巖(yan)石(shi)(shi)裂縫(feng)進一步(bu)擴(kuo)展。根據爆(bao)破(po)應力(li)集中氣(qi)(qi)刃作(zuo)用原則,爆(bao)破(po)氣(qi)(qi)體沿裂縫(feng)進一步(bu)擴(kuo)大貫通(tong),拋落(luo)巖(yan)石(shi)(shi)。