水(shui)壓(ya)(ya)光(guang)(guang)面爆(bao)(bao)破(po)(po)技術(shu)基礎上(shang)發展起來的(de)(de)一項(xiang)新(xin)技術(shu),其(qi)掏槽眼(yan)(yan)、輔(fu)助(zhu)眼(yan)(yan)裝藥(yao)結構和(he)(he)爆(bao)(bao)破(po)(po)方(fang)式與水(shui)壓(ya)(ya)光(guang)(guang)面爆(bao)(bao)破(po)(po)相同,但在周邊眼(yan)(yan)中(zhong)安裝專(zhuan)用(yong)(yong)線性聚(ju)(ju)能藥(yao)管(guan)(guan)替代常(chang)規(gui)爆(bao)(bao)破(po)(po)藥(yao)卷和(he)(he)傳爆(bao)(bao)線,利用(yong)(yong)線性聚(ju)(ju)能藥(yao)管(guan)(guan)產生的(de)(de)粒子射流動能、高壓(ya)(ya)爆(bao)(bao)破(po)(po)氣體(ti)應力及“氣楔”作用(yong)(yong),形成平整圓(yuan)順的(de)(de)開挖輪廓(kuo)面,對控制超欠挖具有良好效果,有效提升了隧(sui)道施工(gong)質量、進度和(he)(he)經濟效益。水(shui)壓(ya)(ya)光(guang)(guang)面爆(bao)(bao)破(po)(po)較(jiao)水(shui)壓(ya)(ya)光(guang)(guang)面爆(bao)(bao)破(po)(po),在周邊眼(yan)(yan)單循環(huan)火工(gong)品使用(yong)(yong)量上(shang)節(jie)約(yue)(yue)費(fei)用(yong)(yong)8.3%,周邊眼(yan)(yan)鉆孔數量從39個(ge)下降為23個(ge)費(fei)用(yong)(yong)節(jie)約(yue)(yue)41%,混凝(ning)土噴射每(mei)延米節(jie)約(yue)(yue)1.37立方(fang)米。聚(ju)(ju)能水(shui)壓(ya)(ya)光(guang)(guang)面爆(bao)(bao)破(po)(po)比水(shui)壓(ya)(ya)光(guang)(guang)面爆(bao)(bao)破(po)(po)每(mei)循環(huan)節(jie)約(yue)(yue)費(fei)用(yong)(yong)258.4元,即每(mei)延米節(jie)約(yue)(yue)76較(jiao)元,節(jie)約(yue)(yue)費(fei)用(yong)(yong)比例達(da)32%。此外,聚(ju)(ju)能水(shui)壓(ya)(ya)光(guang)(guang)面爆(bao)(bao)破(po)(po)能有效降低隧(sui)道內石渣塊度和(he)(he)粉塵含量,還可使通(tong)風時間有效縮(suo)短(duan)33%。
施工(gong)工(gong)藝嚴格遵(zun)循(xun)六(liu)字方(fang)針(掛滿、貼緊、對準):(1)要(yao)保證(zheng)(zheng)(zheng)(zheng)炮(pao)眼(yan)(yan)打眼(yan)(yan)質量(liang),炮(pao)眼(yan)(yan)必須按(an)技(ji)術要(yao)求合(he)理布置。(2)要(yao)保證(zheng)(zheng)(zheng)(zheng)掏槽眼(yan)(yan)以及(ji)其他(ta)眼(yan)(yan)眼(yan)(yan)的(de)(de)打眼(yan)(yan)質量(liang),一定(ding)要(yao)在(zai)(zai)規(gui)定(ding)位置上打眼(yan)(yan);二(er)要(yao)保證(zheng)(zheng)(zheng)(zheng)炮(pao)眼(yan)(yan)深度和角度。(3)聚(ju)(ju)能(neng)管(guan)(guan)裝藥時(shi),要(yao)保證(zheng)(zheng)(zheng)(zheng)乳化炸藥在(zai)(zai)聚(ju)(ju)能(neng)管(guan)(guan)中空內壁中填充(chong)飽滿不得有空隙(xi)出現時(shi)以產(chan)生拒爆。(4)聚(ju)(ju)能(neng)管(guan)(guan)在(zai)(zai)炮(pao)眼(yan)(yan)中裝填時(shi),要(yao)保證(zheng)(zheng)(zheng)(zheng)聚(ju)(ju)能(neng)管(guan)(guan)的(de)(de)兩條聚(ju)(ju)能(neng)槽指(zhi)向(xiang)巷道輪廓(kuo)線方(fang)向(xiang)并且(qie)各個(ge)炮(pao)眼(yan)(yan)聚(ju)(ju)能(neng)管(guan)(guan)的(de)(de)聚(ju)(ju)能(neng)槽軸(zhou)線方(fang)面(mian)要(yao)保證(zheng)(zheng)(zheng)(zheng)相互連(lian)接在(zai)(zai)隧道輪廓(kuo)線上。否則成(cheng)型效果不僅不好,反而更差。(5)保證(zheng)(zheng)(zheng)(zheng)炮(pao)眼(yan)(yan)堵塞質量(liang)。(6)放(fang)炮(pao)員應(ying)提前按(an)規(gui)定(ding)裝好聚(ju)(ju)能(neng)管(guan)(guan)的(de)(de)炸藥,并做好準備(bei)工(gong)作。試(shi)用(yong)范圍:一級至五級圍巖(yan)的(de)(de)光面(mian)爆破工(gong)程。
聚能(neng)(neng)(neng)(neng)包(bao)由炸(zha)(zha)、形(xing)(xing)罩(zhao)、隔板、殼(ke)體、引信(xin)和(he)支架等(deng)(deng)部分(fen)組成(cheng),其作(zuo)用(yong)(yong)(yong)及(ji)對聚能(neng)(neng)(neng)(neng)包(bao)威力的(de)(de)(de)影響分(fen)述如(ru)下。1.炸(zha)(zha),炸(zha)(zha)是(shi)聚能(neng)(neng)(neng)(neng)管爆(bao)破的(de)(de)(de)能(neng)(neng)(neng)(neng)源(yuan),炸(zha)(zha)的(de)(de)(de)爆(bao)壓(ya)(ya)(ya)越大,聚能(neng)(neng)(neng)(neng)彈威力越大;為得(de)到高(gao)爆(bao)壓(ya)(ya)(ya),需高(gao)爆(bao)速、高(gao)密度(du)的(de)(de)(de)炸(zha)(zha)。常用(yong)(yong)(yong)炸(zha)(zha)有梯恩梯、8321炸(zha)(zha)等(deng)(deng),裝(zhuang)(zhuang)方法有熔鑄,塑裝(zhuang)(zhuang)和(he)壓(ya)(ya)(ya)裝(zhuang)(zhuang)多種(zhong)。2.型(xing)(xing)(xing)罩(zhao),型(xing)(xing)(xing)罩(zhao)的(de)(de)(de)作(zuo)用(yong)(yong)(yong)是(shi)把炸(zha)(zha)的(de)(de)(de)爆(bao)炸(zha)(zha)能(neng)(neng)(neng)(neng)轉化(hua)成(cheng)罩(zhao)體材(cai)料的(de)(de)(de)射流(liu)動能(neng)(neng)(neng)(neng),從(cong)而提高(gao)其穿透和(he)切(qie)割能(neng)(neng)(neng)(neng)力。型(xing)(xing)(xing)罩(zhao)的(de)(de)(de)材(cai)料必須滿足(zu)四點(dian)要求,即可(ke)壓(ya)(ya)(ya)縮性(xing)小、密度(du)高(gao)、塑性(xing)和(he)延展性(xing)好(hao),在形(xing)(xing)成(cheng)射流(liu)中(zhong)不汽化(hua)。大量試驗證明(ming),用(yong)(yong)(yong)紫銅制(zhi)作(zuo)型(xing)(xing)(xing)罩(zhao)效(xiao)果好(hao),其次(ci)為鑄鐵、鋼(gang)和(he)陶瓷(ci)。型(xing)(xing)(xing)罩(zhao)的(de)(de)(de)形(xing)(xing)狀多種(zhong)多樣,主(zhu)要有軸對稱型(xing)(xing)(xing),如(ru)圓錐形(xing)(xing)、半(ban)球形(xing)(xing)、拋物線形(xing)(xing)和(he)喇(la)叭形(xing)(xing)等(deng)(deng);面對稱型(xing)(xing)(xing),常見的(de)(de)(de)有用(yong)(yong)(yong)于(yu)切(qie)割屬板材(cai)的(de)(de)(de)直線形(xing)(xing)和(he)用(yong)(yong)(yong)于(yu)切(qie)割管材(cai)的(de)(de)(de)環(huan)形(xing)(xing)聚能(neng)(neng)(neng)(neng)罩(zhao)兩(liang)種(zhong);中(zhong)心對稱型(xing)(xing)(xing),這(zhe)種(zhong)球形(xing)(xing)聚能(neng)(neng)(neng)(neng)包(bao),中(zhong)心有球形(xing)(xing)空腔和(he)球形(xing)(xing)罩(zhao),球形(xing)(xing)罩(zhao)外(wai)敷(fu)設炸(zha)(zha),若能(neng)(neng)(neng)(neng)在瞬間同(tong)時(shi)起爆(bao),可(ke)在空腔中(zhong)心點(dian)獲得(de)極大的(de)(de)(de)能(neng)(neng)(neng)(neng)量集中(zhong)。在工程中(zhong)常用(yong)(yong)(yong)的(de)(de)(de)是(shi)軸對稱型(xing)(xing)(xing)和(he)面對稱型(xing)(xing)(xing)兩(liang)類(lei)型(xing)(xing)(xing)罩(zhao)。
給大(da)家介紹下爆破(po)(po)聚能(neng)(neng)管的(de)技術原理(li)∶炸藥爆炸產生的(de)爆轟波通過聚能(neng)(neng)管的(de)聚能(neng)(neng)槽,將炸藥的(de)動能(neng)(neng)、勢能(neng)(neng)轉(zhuan)換成(cheng)高壓、高速(su)、高能(neng)(neng)的(de)射流,切(qie)割演示成(cheng)縫(feng)。射流在孔壁(bi)產生射流壓力達7000MPa,巖(yan)石動載抗壓強度為200MPa,抗拉(la)(la)為1/8~1/10的(de)抗壓強度,相鄰(lin)兩(liang)炮(pao)孔互為鄰(lin)空面,疊加后(hou)的(de)壓縮波變(bian)為稀疏波,在兩(liang)炮(pao)眼連線(xian)上(shang)使巖(yan)石結構斷(duan)裂(lie)(lie)(lie),形成(cheng)裂(lie)(lie)(lie)紋。準靜(jing)態(tai)氣(qi)體膨脹(zhang),靜(jing)態(tai)壓力在兩(liang)炮(pao)孔最短連線(xian)兩(liang)側產生拉(la)(la)力使巖(yan)石裂(lie)(lie)(lie)縫(feng)進(jin)一步擴展。根據爆破(po)(po)應力集中氣(qi)刃(ren)作用原則(ze),爆破(po)(po)氣(qi)體沿裂(lie)(lie)(lie)縫(feng)進(jin)一步擴大(da)貫通,拋(pao)落巖(yan)石。
施工(gong)因(yin)其復雜性(xing)、專業(ye)性(xing)、危(wei)險性(xing),稍有不(bu)(bu)慎(shen),將對人民的(de)(de)(de)生命(ming)財產(chan)安(an)(an)全(quan)造成不(bu)(bu)可(ke)估量(liang)(liang)的(de)(de)(de)損失,例如(ru)廣東宏大寧夏“10.16”、山東保利(li)“5.20”等重大安(an)(an)全(quan)事故。因(yin)此,相較(jiao)其他行業(ye),國家出(chu)臺的(de)(de)(de)相關(guan)(guan)法律(lv)法規多、專、嚴,從爆(bao)(bao)破材料(liao)(炸(zha)藥、雷(lei)管(guan)、導(dao)(dao)爆(bao)(bao)索(suo)?管(guan)?及相關(guan)(guan)材料(liao))的(de)(de)(de)生產(chan)、購進、運輸、儲(chu)存、發放、布(bu)網、連接、起爆(bao)(bao)、排爆(bao)(bao)等一(yi)系列(lie)程序均(jun)有嚴格(ge)的(de)(de)(de)法律(lv)規定和(he)(he)科學的(de)(de)(de)操(cao)作(zuo)規程,并(bing)且相關(guan)(guan)從業(ye)單(dan)位和(he)(he)人員(yuan)均(jun)應取得相應資質。做為(wei)各類爆(bao)(bao)破中不(bu)(bu)可(ke)或缺的(de)(de)(de)一(yi)種導(dao)(dao)線(xian),特別不(bu)(bu)同于一(yi)般的(de)(de)(de)電(dian)(dian)線(xian)電(dian)(dian)纜(lan),其質量(liang)(liang)要求(qiu)及各項(xiang)技術參數也與普通電(dian)(dian)線(xian)電(dian)(dian)纜(lan)不(bu)(bu)同。部分家庭作(zuo)坊式的(de)(de)(de)電(dian)(dian)線(xian)電(dian)(dian)纜(lan)廠(chang)無科學的(de)(de)(de)生產(chan)工(gong)藝(yi)、無基(ji)本(ben)的(de)(de)(de)檢測(ce)設備、無專業(ye)的(de)(de)(de)技術人員(yuan),甚至(zhi)不(bu)(bu)知道爆(bao)(bao)破線(xian)的(de)(de)(de)質量(liang)(liang)要求(qiu)和(he)(he)技術參數,更不(bu)(bu)可(ke)能制訂自己的(de)(de)(de)企業(ye)標準,僅憑(ping)簡(jian)陋的(de)(de)(de)設備、以粗糙的(de)(de)(de)模仿(fang)進行生產(chan)經營活(huo)動,致使市場充斥著(zhu)假冒偽劣產(chan)品,導(dao)(dao)致爆(bao)(bao)破中提(ti)前或延遲起爆(bao)(bao)、盲(mang)炮增加且強制排爆(bao)(bao)困難,給(gei)人身(shen)安(an)(an)全(quan)和(he)(he)財產(chan)以及正常的(de)(de)(de)生產(chan)經營活(huo)動造成了(le)不(bu)(bu)可(ke)估量(liang)(liang)的(de)(de)(de)損失。
專用o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。佛山o型聚能管是(shi)兩(liang)個(ge)相(xiang)似半(ban)(ban)(ban)壁管(guan)(guan)組成(cheng),半(ban)(ban)(ban)壁管(guan)(guan)中央(yang)有個(ge)凹(ao)進(jin)去的槽叫做'聚(ju)能槽",使用聚(ju)能管(guan)(guan)光面爆(bao)(bao)(bao)破(po)成(cheng)型效(xiao)果好,開(kai)挖(wa)輪廓線平順整齊(qi),圍(wei)巖(yan)擾動減(jian)少(shao)(shao)(shao)、超(chao)欠挖(wa)明(ming)顯(xian)改善,有利(li)于支(zhi)護工序施工,同時混凝(ning)土回填(tian)成(cheng)本(ben)(ben)大(da)(da)(da)為降低(di)。鑿孔(kong)(kong)率(lv)減(jian)少(shao)(shao)(shao)30%,大(da)(da)(da)大(da)(da)(da)降低(di)了爆(bao)(bao)(bao)破(po)作業工班(ban)的勞(lao)動量:鉆孔(kong)(kong)縮(suo)短30分鐘(zhong)、少(shao)(shao)(shao)打眼(yan)、出渣量減(jian)少(shao)(shao)(shao),降低(di)了材料成(cheng)本(ben)(ben)、減(jian)少(shao)(shao)(shao)工時消耗(hao)、勞(lao)動效(xiao)率(lv)明(ming)顯(xian)提高,周邊眼(yan)爆(bao)(bao)(bao)破(po)成(cheng)本(ben)(ben)降低(di)30%以上,半(ban)(ban)(ban)眼(yan)痕保留率(lv)高達85%以上。pvc爆(bao)(bao)(bao)破(po)聚(ju)能管(guan)(guan)主要(yao)應(ying)用于隧道、煤礦(kuang)、鐵礦(kuang)等(deng)需要(yao)進(jin)行光面爆(bao)(bao)(bao)破(po)施工的工程。采用聚(ju)能管(guan)(guan)的光面爆(bao)(bao)(bao)破(po)可減(jian)少(shao)(shao)(shao)鉆孔(kong)(kong),擴大(da)(da)(da)孔(kong)(kong)距,減(jian)少(shao)(shao)(shao)導(dao)爆(bao)(bao)(bao)管(guan)(guan)用量,減(jian)少(shao)(shao)(shao)超(chao)挖(wa),減(jian)少(shao)(shao)(shao)噴漿,提高半(ban)(ban)(ban)孔(kong)(kong)率(lv),既(ji)節省了成(cheng)本(ben)(ben)又提高了施工效(xiao)率(lv)。