聚能(neng)(neng)包由(you)炸(zha)(zha)(zha)、形(xing)(xing)罩(zhao)、隔板、殼(ke)體、引信和(he)(he)支架等(deng)部分(fen)組成(cheng),其(qi)作(zuo)用(yong)及對聚能(neng)(neng)包威力的影(ying)響分(fen)述如下。1.炸(zha)(zha)(zha),炸(zha)(zha)(zha)是聚能(neng)(neng)管爆破的能(neng)(neng)源,炸(zha)(zha)(zha)的爆壓(ya)越(yue)大(da),聚能(neng)(neng)彈威力越(yue)大(da);為(wei)得(de)(de)到高爆壓(ya),需高爆速、高密(mi)度的炸(zha)(zha)(zha)。常用(yong)炸(zha)(zha)(zha)有梯(ti)恩梯(ti)、8321炸(zha)(zha)(zha)等(deng),裝(zhuang)方法有熔鑄(zhu),塑裝(zhuang)和(he)(he)壓(ya)裝(zhuang)多種(zhong)(zhong)。2.型(xing)(xing)(xing)罩(zhao),型(xing)(xing)(xing)罩(zhao)的作(zuo)用(yong)是把炸(zha)(zha)(zha)的爆炸(zha)(zha)(zha)能(neng)(neng)轉化(hua)成(cheng)罩(zhao)體材(cai)料(liao)(liao)的射(she)流(liu)動能(neng)(neng),從而提高其(qi)穿透和(he)(he)切(qie)割(ge)(ge)(ge)能(neng)(neng)力。型(xing)(xing)(xing)罩(zhao)的材(cai)料(liao)(liao)必(bi)須滿足四(si)點要求,即可壓(ya)縮(suo)性小、密(mi)度高、塑性和(he)(he)延展(zhan)性好,在形(xing)(xing)成(cheng)射(she)流(liu)中(zhong)(zhong)不(bu)汽化(hua)。大(da)量試(shi)驗證明,用(yong)紫銅制作(zuo)型(xing)(xing)(xing)罩(zhao)效果好,其(qi)次(ci)為(wei)鑄(zhu)鐵、鋼和(he)(he)陶瓷。型(xing)(xing)(xing)罩(zhao)的形(xing)(xing)狀多種(zhong)(zhong)多樣,主要有軸(zhou)(zhou)對稱(cheng)型(xing)(xing)(xing),如圓(yuan)錐形(xing)(xing)、半球(qiu)形(xing)(xing)、拋物線形(xing)(xing)和(he)(he)喇叭形(xing)(xing)等(deng);面對稱(cheng)型(xing)(xing)(xing),常見的有用(yong)于切(qie)割(ge)(ge)(ge)屬板材(cai)的直線形(xing)(xing)和(he)(he)用(yong)于切(qie)割(ge)(ge)(ge)管材(cai)的環形(xing)(xing)聚能(neng)(neng)罩(zhao)兩(liang)種(zhong)(zhong);中(zhong)(zhong)心(xin)(xin)對稱(cheng)型(xing)(xing)(xing),這(zhe)種(zhong)(zhong)球(qiu)形(xing)(xing)聚能(neng)(neng)包,中(zhong)(zhong)心(xin)(xin)有球(qiu)形(xing)(xing)空腔(qiang)和(he)(he)球(qiu)形(xing)(xing)罩(zhao),球(qiu)形(xing)(xing)罩(zhao)外(wai)敷設炸(zha)(zha)(zha),若能(neng)(neng)在瞬間(jian)同時起爆,可在空腔(qiang)中(zhong)(zhong)心(xin)(xin)點獲(huo)得(de)(de)極大(da)的能(neng)(neng)量集(ji)中(zhong)(zhong)。在工程中(zhong)(zhong)常用(yong)的是軸(zhou)(zhou)對稱(cheng)型(xing)(xing)(xing)和(he)(he)面對稱(cheng)型(xing)(xing)(xing)兩(liang)類型(xing)(xing)(xing)罩(zhao)。
水(shui)(shui)壓(ya)爆(bao)破(po)(po)(po)(po)(po)是在(zai)炮(pao)孔(kong)兩(liang)端填充水(shui)(shui)袋,中間(jian)裝(zhuang)上乳化(hua)炸(zha),炮(pao)孔(kong)再用(yong)炮(pao)泥封(feng)死(si),炮(pao)孔(kong)間(jian)距很大(da),兩(liang)個(ge)炮(pao)空之間(jian)相距了一米(mi)(mi)左(zuo)右,是常(chang)規爆(bao)破(po)(po)(po)(po)(po)的(de)(de)(de)炮(pao)孔(kong)間(jian)距的(de)(de)(de)兩(liang)倍,這樣(yang)(yang)可以節(jie)(jie)省(sheng)炮(pao)孔(kong)材料,這兩(liang)個(ge)凹槽又稱為聚(ju)能(neng)(neng)槽,聚(ju)能(neng)(neng)槽非常(chang)重(zhong)要(yao)(yao),放置的(de)(de)(de)位置和方向都十分講究(jiu),一點(dian)也不能(neng)(neng)出錯(cuo),在(zai)爆(bao)破(po)(po)(po)(po)(po)的(de)(de)(de)瞬間(jian),高溫高壓(ya)聚(ju)能(neng)(neng)射流(liu)立即(ji)往(wang)凹槽兩(liang)邊的(de)(de)(de)巖石(shi)進行切割,巖石(shi)如同(tong)豆腐(fu)一樣(yang)(yang)輕松被切割切割出來(lai)的(de)(de)(de)輪廓線十分平順,效果極好,聚(ju)能(neng)(neng)水(shui)(shui)壓(ya)爆(bao)破(po)(po)(po)(po)(po)中的(de)(de)(de)水(shui)(shui)袋沒有(you)降低爆(bao)破(po)(po)(po)(po)(po)的(de)(de)(de)效果,反而能(neng)(neng)保護隧道周邊植被,減少(shao)地質擾動(dong),降低煙塵(chen),重(zhong)要(yao)(yao)的(de)(de)(de)是節(jie)(jie)省(sheng)炸(zha)成本,在(zai)未(wei)來(lai)這項技術(shu)會廣泛應用(yong)于工程中,降低施工成本。爆(bao)破(po)(po)(po)(po)(po)聚(ju)能(neng)(neng)管水(shui)(shui)壓(ya)光面(mian)(mian)爆(bao)破(po)(po)(po)(po)(po)較水(shui)(shui)壓(ya)光面(mian)(mian)爆(bao)破(po)(po)(po)(po)(po),在(zai)周邊眼(yan)(yan)單(dan)循環火工品使(shi)用(yong)量上節(jie)(jie)約(yue)費(fei)用(yong)8.3%,周邊眼(yan)(yan)鉆孔(kong)數(shu)量從39個(ge)下降為23個(ge)費(fei)用(yong)節(jie)(jie)約(yue)41%,混(hun)凝土(tu)噴射每延(yan)米(mi)(mi)節(jie)(jie)約(yue)1.37立方米(mi)(mi)。
深孔爆破多向聚能管公司聚能藥包破碎法特點是:不需要打眼,因而不需要購買打眼設備和動力設備;施工簡單,施工進度比淺眼爆破法快安全性比普通淺眼爆破法和普通裸露藥包法好;勞動強度比淺眼爆破法低。深孔爆破多向聚能管公司制造聚(ju)(ju)(ju)能(neng)藥(yao)(yao)包所采(cai)用的(de)(de)炸(zha)藥(yao)(yao)有:黑索金和(he)梯恩(en)梯混合熔鑄型(xing);乳(ru)化油炸(zha)藥(yao)(yao)和(he)黑索金混裝型(xing)和(he)二號巖石硝鉸炸(zha)藥(yao)(yao)壓制型(xing)。根據使用的(de)(de)結果證明,選用密度較(jiao)(jiao)大(da)(da)和(he)爆(bao)速較(jiao)(jiao)高的(de)(de)炸(zha)藥(yao)(yao)制造聚(ju)(ju)(ju)能(neng)藥(yao)(yao)包能(neng)獲得較(jiao)(jiao)好的(de)(de)破(po)碎(sui)效(xiao)果。這主要是由于它(ta)加(jia)工(gong)簡單(dan)和(he)破(po)碎(sui)能(neng)力較(jiao)(jiao)大(da)(da)。在(zai)礦山由于二次破(po)碎(sui)消(xiao)耗的(de)(de)藥(yao)(yao)包較(jiao)(jiao)多(duo),而且(qie)金屬(shu)藥(yao)(yao)型(xing)罩的(de)(de)加(jia)工(gong)費工(gong)又費材(cai)料,所以(yi)多(duo)不采(cai)用藥(yao)(yao)型(xing)罩。國內生產(chan)的(de)(de)一種用于破(po)碎(sui)大(da)(da)塊的(de)(de)聚(ju)(ju)(ju)能(neng)藥(yao)(yao)包,裝置聚(ju)(ju)(ju)能(neng)藥(yao)(yao)包時,要將藥(yao)(yao)包垂(chui)直裝在(zai)大(da)(da)塊的(de)(de)頂(ding)面(mian)上(shang),聚(ju)(ju)(ju)能(neng)穴朝下。藥(yao)(yao)包位(wei)置應選在(zai)頂(ding)面(mian)的(de)(de)幾何中心或附近較(jiao)(jiao)平整(zheng)的(de)(de)地(di)點。然(ran)后(hou)在(zai)上(shang)面(mian)覆蓋泥沙。
給(gei)大(da)家(jia)介紹下爆(bao)破(po)聚能(neng)管的(de)技術原理∶炸(zha)藥(yao)爆(bao)炸(zha)產生的(de)爆(bao)轟波通(tong)(tong)過聚能(neng)管的(de)聚能(neng)槽,將炸(zha)藥(yao)的(de)動能(neng)、勢能(neng)轉換成(cheng)高壓(ya)、高速、高能(neng)的(de)射流,切割(ge)演示(shi)成(cheng)縫。射流在(zai)孔(kong)壁產生射流壓(ya)力達7000MPa,巖(yan)石動載抗壓(ya)強度為200MPa,抗拉為1/8~1/10的(de)抗壓(ya)強度,相(xiang)鄰(lin)兩(liang)(liang)炮孔(kong)互(hu)為鄰(lin)空面,疊加后的(de)壓(ya)縮波變為稀(xi)疏波,在(zai)兩(liang)(liang)炮眼連線上(shang)使(shi)巖(yan)石結構斷(duan)裂(lie),形成(cheng)裂(lie)紋(wen)。準靜態氣體(ti)膨(peng)脹,靜態壓(ya)力在(zai)兩(liang)(liang)炮孔(kong)最短連線兩(liang)(liang)側(ce)產生拉力使(shi)巖(yan)石裂(lie)縫進(jin)一(yi)步(bu)擴展。根據爆(bao)破(po)應力集(ji)中氣刃作用原則(ze),爆(bao)破(po)氣體(ti)沿(yan)裂(lie)縫進(jin)一(yi)步(bu)擴大(da)貫通(tong)(tong),拋落巖(yan)石。