使用(yong)單(dan)位或經(jing)(jing)銷(xiao)商在日常采(cai)(cai)(cai)(cai)(cai)購(gou)(gou)(gou)(gou)中使用(yong)搜(sou)索(suo)引(yin)擎搜(sou)索(suo)生(sheng)產(chan)(chan)(chan)廠商并購(gou)(gou)(gou)(gou)買產(chan)(chan)(chan)品(pin)(pin)(pin)已經(jing)(jing)成為(wei)(wei)很(hen)多企(qi)業(ye)(ye)(ye)(ye)和經(jing)(jing)銷(xiao)商的主要采(cai)(cai)(cai)(cai)(cai)購(gou)(gou)(gou)(gou)手段(duan)。根(gen)據我們從事(shi)網(wang)絡營銷(xiao)的經(jing)(jing)歷，總結出以下(xia)幾(ji)點(dian)注意事(shi)項，希(xi)望能對采(cai)(cai)(cai)(cai)(cai)購(gou)(gou)(gou)(gou)的企(qi)業(ye)(ye)(ye)(ye)起到一些(xie)幫助(zhu)作用(yong)。1、采(cai)(cai)(cai)(cai)(cai)購(gou)(gou)(gou)(gou)的產(chan)(chan)(chan)品(pin)(pin)(pin)型號(hao)規(gui)格(ge)、質(zhi)量(liang)標準、技(ji)術參數應與(yu)(yu)采(cai)(cai)(cai)(cai)(cai)購(gou)(gou)(gou)(gou)計(ji)劃相(xiang)符。2、采(cai)(cai)(cai)(cai)(cai)購(gou)(gou)(gou)(gou)產(chan)(chan)(chan)品(pin)(pin)(pin)時，就是通(tong)過搜(sou)索(suo)引(yin)擎搜(sou)索(suo)自己需求的產(chan)(chan)(chan)品(pin)(pin)(pin)，找出生(sheng)產(chan)(chan)(chan)和銷(xiao)售該(gai)產(chan)(chan)(chan)品(pin)(pin)(pin)的企(qi)業(ye)(ye)(ye)(ye)，然(ran)后查看該(gai)生(sheng)產(chan)(chan)(chan)企(qi)業(ye)(ye)(ye)(ye)網(wang)站(zhan)是否(fou)經(jing)(jing)過其所在省份工(gong)信廳備案，并登錄(lu)查驗。3、查看該(gai)生(sheng)產(chan)(chan)(chan)企(qi)業(ye)(ye)(ye)(ye)網(wang)站(zhan)欄(lan)目(mu)配置、欄(lan)目(mu)內容(rong)是否(fou)足夠專業(ye)(ye)(ye)(ye)，如大量(liang)出現與(yu)(yu)采(cai)(cai)(cai)(cai)(cai)購(gou)(gou)(gou)(gou)產(chan)(chan)(chan)品(pin)(pin)(pin)無關、雜亂無章的，聯系地(di)址標明(ming)xxx工(gong)業(ye)(ye)(ye)(ye)區(qu)、示范園而沒(mei)有路牌號(hao)的，只有手機號(hao)碼而沒(mei)有固定(ding)電話(hua)、傳真地(di)的，足可(ke)認定(ding)該(gai)生(sheng)產(chan)(chan)(chan)企(qi)業(ye)(ye)(ye)(ye)為(wei)(wei)非正規(gui)的家庭(ting)作坊，不宜作為(wei)(wei)采(cai)(cai)(cai)(cai)(cai)購(gou)(gou)(gou)(gou)對象。

專用雙向爆破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。潮州雙向爆破聚能管是兩(liang)個(ge)相似半壁(bi)管組(zu)成(cheng)(cheng)，半壁(bi)管中央(yang)有個(ge)凹進去的(de)槽(cao)叫做'聚(ju)能(neng)槽(cao)"，使用聚(ju)能(neng)管光面(mian)爆(bao)破(po)(po)(po)成(cheng)(cheng)型效(xiao)果(guo)好，開挖輪(lun)廓線平順整齊(qi)，圍巖(yan)擾動(dong)減少(shao)(shao)(shao)、超(chao)欠挖明(ming)顯改善(shan)，有利于(yu)支護(hu)工(gong)(gong)序施工(gong)(gong)，同時(shi)混凝土(tu)回填成(cheng)(cheng)本大為降(jiang)低。鑿孔(kong)率(lv)減少(shao)(shao)(shao)30%，大大降(jiang)低了(le)爆(bao)破(po)(po)(po)作業(ye)工(gong)(gong)班的(de)勞動(dong)量:鉆(zhan)孔(kong)縮短30分鐘、少(shao)(shao)(shao)打眼(yan)(yan)、出渣量減少(shao)(shao)(shao)，降(jiang)低了(le)材料成(cheng)(cheng)本、減少(shao)(shao)(shao)工(gong)(gong)時(shi)消耗、勞動(dong)效(xiao)率(lv)明(ming)顯提(ti)高，周(zhou)邊眼(yan)(yan)爆(bao)破(po)(po)(po)成(cheng)(cheng)本降(jiang)低30%以上，半眼(yan)(yan)痕(hen)保留率(lv)高達85%以上。pvc爆(bao)破(po)(po)(po)聚(ju)能(neng)管主要應(ying)用于(yu)隧(sui)道、煤(mei)礦(kuang)、鐵礦(kuang)等需要進行光面(mian)爆(bao)破(po)(po)(po)施工(gong)(gong)的(de)工(gong)(gong)程。采用聚(ju)能(neng)管的(de)光面(mian)爆(bao)破(po)(po)(po)可減少(shao)(shao)(shao)鉆(zhan)孔(kong)，擴大孔(kong)距，減少(shao)(shao)(shao)導爆(bao)管用量，減少(shao)(shao)(shao)超(chao)挖，減少(shao)(shao)(shao)噴漿(jiang)，提(ti)高半孔(kong)率(lv)，既節(jie)省了(le)成(cheng)(cheng)本又提(ti)高了(le)施工(gong)(gong)效(xiao)率(lv)。

聚能(neng)藥(yao)(yao)(yao)包(bao)(bao)(bao)(bao)破碎(sui)(sui)法(fa)特點是(shi):不(bu)需要打眼，因而(er)不(bu)需要購買打眼設備和(he)(he)(he)動力設備;施(shi)工(gong)(gong)簡單，施(shi)工(gong)(gong)進度比(bi)淺眼爆(bao)破法(fa)快安全性比(bi)普通淺眼爆(bao)破法(fa)和(he)(he)(he)普通裸露藥(yao)(yao)(yao)包(bao)(bao)(bao)(bao)法(fa)好;勞動強度比(bi)淺眼爆(bao)破法(fa)低(di)。制造(zao)聚能(neng)藥(yao)(yao)(yao)包(bao)(bao)(bao)(bao)所采(cai)用的(de)(de)(de)(de)炸(zha)藥(yao)(yao)(yao)有:黑索(suo)金和(he)(he)(he)梯恩梯混合熔鑄型(xing);乳化油炸(zha)藥(yao)(yao)(yao)和(he)(he)(he)黑索(suo)金混裝(zhuang)型(xing)和(he)(he)(he)二(er)號巖石硝(xiao)鉸炸(zha)藥(yao)(yao)(yao)壓制型(xing)。根據(ju)使(shi)用的(de)(de)(de)(de)結果(guo)證(zheng)明，選用密度較大(da)和(he)(he)(he)爆(bao)速較高的(de)(de)(de)(de)炸(zha)藥(yao)(yao)(yao)制造(zao)聚能(neng)藥(yao)(yao)(yao)包(bao)(bao)(bao)(bao)能(neng)獲(huo)得較好的(de)(de)(de)(de)破碎(sui)(sui)效果(guo)。這主(zhu)要是(shi)由(you)于(yu)它加工(gong)(gong)簡單和(he)(he)(he)破碎(sui)(sui)能(neng)力較大(da)。在礦山由(you)于(yu)二(er)次破碎(sui)(sui)消耗(hao)的(de)(de)(de)(de)藥(yao)(yao)(yao)包(bao)(bao)(bao)(bao)較多，而(er)且(qie)金屬藥(yao)(yao)(yao)型(xing)罩(zhao)的(de)(de)(de)(de)加工(gong)(gong)費(fei)(fei)工(gong)(gong)又(you)費(fei)(fei)材料，所以多不(bu)采(cai)用藥(yao)(yao)(yao)型(xing)罩(zhao)。國內生產的(de)(de)(de)(de)一(yi)種用于(yu)破碎(sui)(sui)大(da)塊的(de)(de)(de)(de)聚能(neng)藥(yao)(yao)(yao)包(bao)(bao)(bao)(bao)，裝(zhuang)置聚能(neng)藥(yao)(yao)(yao)包(bao)(bao)(bao)(bao)時(shi)，要將藥(yao)(yao)(yao)包(bao)(bao)(bao)(bao)垂直裝(zhuang)在大(da)塊的(de)(de)(de)(de)頂面上，聚能(neng)穴朝下(xia)。藥(yao)(yao)(yao)包(bao)(bao)(bao)(bao)位置應選在頂面的(de)(de)(de)(de)幾何中心或附(fu)近較平整(zheng)的(de)(de)(de)(de)地點。然(ran)后在上面覆蓋泥沙。

我(wo)國20世紀(ji)60年(nian)(nian)(nian)代(dai)利(li)用(yong)(yong)斷裂力學(xue)對巖石損傷(shang)引起的裂紋擴展進行(xing)過試驗(yan)(yan)研究(jiu)，為聚(ju)(ju)能(neng)(neng)(neng)爆破(po)技(ji)術(shu)應(ying)用(yong)(yong)到(dao)工(gong)程做了(le)(le)不少理論分析，也取(qu)得(de)一些(xie)進展。80年(nian)(nian)(nian)代(dai)中期開始進行(xing)應(ying)用(yong)(yong)研究(jiu)，以北京礦(kuang)業(ye)學(xue)院(yuan)為代(dai)表，著重研究(jiu)了(le)(le)聚(ju)(ju)能(neng)(neng)(neng)藥(yao)包切割饑理和(he)應(ying)用(yong)(yong)。1987年(nian)(nian)(nian)淮南礦(kuang)業(ye)學(xue)院(yuan)取(qu)得(de)“雙面切割器”的zhuanli，1995年(nian)(nian)(nian)又取(qu)得(de)“大(da)理石花崗(gang)巖切割技(ji)術(shu)應(ying)用(yong)(yong)”zhuanli。1991年(nian)(nian)(nian)中國水(shui)電七局曾試圖采用(yong)(yong)硬質紙加工(gong)聚(ju)(ju)能(neng)(neng)(neng)藥(yao)管成形(xing)聚(ju)(ju)能(neng)(neng)(neng)藥(yao)卷做過聚(ju)(ju)能(neng)(neng)(neng)預裂爆破(po)試驗(yan)(yan)研究(jiu)，但終(zhong)因當時(shi)的技(ji)術(shu)及工(gong)藝水(shui)平的限制無法用(yong)(yong)于正常施工(gong)，但是他們開了(le)(le)橢圓雙極線性(xing)聚(ju)(ju)能(neng)(neng)(neng)結(jie)構試驗(yan)(yan)的先河(he)。雙聚(ju)(ju)能(neng)(neng)(neng)預裂與(yu)光面爆破(po)綜合技(ji)術(shu)開創輪廓控(kong)制爆破(po)新時(shi)代(dai)。

聚(ju)能(neng)(neng)包(bao)由炸(zha)(zha)(zha)、形(xing)(xing)(xing)(xing)罩(zhao)、隔板、殼體、引信(xin)和(he)支架等部分組(zu)成，其作(zuo)用(yong)(yong)及對(dui)(dui)(dui)聚(ju)能(neng)(neng)包(bao)威力(li)的(de)(de)(de)影響分述如(ru)(ru)下。1．炸(zha)(zha)(zha)，炸(zha)(zha)(zha)是聚(ju)能(neng)(neng)管爆破的(de)(de)(de)能(neng)(neng)源，炸(zha)(zha)(zha)的(de)(de)(de)爆壓(ya)越(yue)大，聚(ju)能(neng)(neng)彈威力(li)越(yue)大；為得到高(gao)(gao)爆壓(ya)，需高(gao)(gao)爆速、高(gao)(gao)密度的(de)(de)(de)炸(zha)(zha)(zha)。常用(yong)(yong)炸(zha)(zha)(zha)有(you)(you)梯恩梯、8321炸(zha)(zha)(zha)等，裝方法有(you)(you)熔鑄(zhu)，塑裝和(he)壓(ya)裝多種(zhong)(zhong)(zhong)(zhong)。2．型(xing)(xing)(xing)罩(zhao)，型(xing)(xing)(xing)罩(zhao)的(de)(de)(de)作(zuo)用(yong)(yong)是把炸(zha)(zha)(zha)的(de)(de)(de)爆炸(zha)(zha)(zha)能(neng)(neng)轉(zhuan)化(hua)成罩(zhao)體材(cai)料的(de)(de)(de)射流動能(neng)(neng)，從而提高(gao)(gao)其穿透和(he)切(qie)割(ge)能(neng)(neng)力(li)。型(xing)(xing)(xing)罩(zhao)的(de)(de)(de)材(cai)料必須滿足(zu)四點要求(qiu)，即(ji)可(ke)壓(ya)縮性(xing)小、密度高(gao)(gao)、塑性(xing)和(he)延(yan)展性(xing)好(hao)，在形(xing)(xing)(xing)(xing)成射流中(zhong)(zhong)(zhong)(zhong)不汽(qi)化(hua)。大量試驗證(zheng)明(ming)，用(yong)(yong)紫(zi)銅制作(zuo)型(xing)(xing)(xing)罩(zhao)效果(guo)好(hao)，其次為鑄(zhu)鐵、鋼和(he)陶(tao)瓷。型(xing)(xing)(xing)罩(zhao)的(de)(de)(de)形(xing)(xing)(xing)(xing)狀(zhuang)多種(zhong)(zhong)(zhong)(zhong)多樣，主要有(you)(you)軸(zhou)對(dui)(dui)(dui)稱型(xing)(xing)(xing)，如(ru)(ru)圓錐(zhui)形(xing)(xing)(xing)(xing)、半球形(xing)(xing)(xing)(xing)、拋物線形(xing)(xing)(xing)(xing)和(he)喇叭(ba)形(xing)(xing)(xing)(xing)等；面對(dui)(dui)(dui)稱型(xing)(xing)(xing)，常見的(de)(de)(de)有(you)(you)用(yong)(yong)于(yu)切(qie)割(ge)屬板材(cai)的(de)(de)(de)直線形(xing)(xing)(xing)(xing)和(he)用(yong)(yong)于(yu)切(qie)割(ge)管材(cai)的(de)(de)(de)環(huan)形(xing)(xing)(xing)(xing)聚(ju)能(neng)(neng)罩(zhao)兩種(zhong)(zhong)(zhong)(zhong)；中(zhong)(zhong)(zhong)(zhong)心對(dui)(dui)(dui)稱型(xing)(xing)(xing)，這種(zhong)(zhong)(zhong)(zhong)球形(xing)(xing)(xing)(xing)聚(ju)能(neng)(neng)包(bao)，中(zhong)(zhong)(zhong)(zhong)心有(you)(you)球形(xing)(xing)(xing)(xing)空(kong)腔(qiang)和(he)球形(xing)(xing)(xing)(xing)罩(zhao)，球形(xing)(xing)(xing)(xing)罩(zhao)外敷設(she)炸(zha)(zha)(zha)，若能(neng)(neng)在瞬間(jian)同時起爆，可(ke)在空(kong)腔(qiang)中(zhong)(zhong)(zhong)(zhong)心點獲(huo)得極大的(de)(de)(de)能(neng)(neng)量集中(zhong)(zhong)(zhong)(zhong)。在工程中(zhong)(zhong)(zhong)(zhong)常用(yong)(yong)的(de)(de)(de)是軸(zhou)對(dui)(dui)(dui)稱型(xing)(xing)(xing)和(he)面對(dui)(dui)(dui)稱型(xing)(xing)(xing)兩類型(xing)(xing)(xing)罩(zhao)。