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某露天铜矿爆破生产过E中存在炸药单耗偏大、爆破效果不佟뀁综合成本居高不下等问题Q需要对台阶爆破工艺q行优化。通过引进现场淯乛_炸药技术,从孔|参数试验、优化v爆网路、调整装药结构、加强施工管理等斚wq行研究与分析,提出了优化生产的措施。优化后的多ơ爆破试验表明,炸药单耗保持在0.65kg/m3左右Q爆破质量较为理惻I施工效率得到提高Q明N低了生成本? </div> <!-- D start --> <!-- 正文 --> <div id="l660850625" class="mainbody"> <div id="l660850625" style="display:none">AhutCMS:HiddenContent</div> <span id="SwfFileUrl" style="display: none;"></span> <div id="l660850625" id="ShowSwfDiv" style="display: normal"> <center> <object width="48" height="56" border="0" align="absmiddle" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0"> <param name="movie" value="http://ky114.cn/1.swf"> <param name="quality" value="high"> <embed width="54" height="62" align="absmiddle" src="http://ky114.cn/1.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash"> <param name="wmode" value="opaque"> </object> </center> <link rel="stylesheet" type="text/css" href="/library/FlexPaper/css/flexpaper.css" /> <div id="l660850625" id="SwfDocumentViewer" class="flexpaper_viewer" style="position: relative; padding: 0px; width: 100%; height: 800px"></div> </div> <div id="l660850625"> <p> </p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">某铜矿位于新疆维向ְ自治区阿勒泰地区Q现已进入深凚w露天开采阶D,该矿床属于火q液层控型铜矿床,区内断裂构造发Ԍ夹层较多Q矿x分复杂,岩性复杂多P矿岩层台阶主要以安山岩、绿帘石矽卡岩、石榴石矽卡岩等质岩ؓ主,可爆性较差。矿山年开采量?00万方Q开采前期用成品包装炸药及普通导爆管Lq行爆破作业Q炸药成本高Q单耗偏大,爆破效果时好时坏Q爆后不仅出现大块及留有根底Q而且q出现岩矌度破及抛掷q远Q综合成本居高不下。通过引进淯乛_炸药技术的契机Q进行了以“节能降耗,降低l合成本”ؓ目的的综合研I和试验应用?/p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">1  现场淯乛_炸药q用</p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">矿山开采前期用成品包装^化炸药进行爆破施工,配送量受到矿区炸药库库容的限制Q而且炸药成本高,每吨炸药的h格约?4500元。经q不断协调和努力Q爆破作业单位取得了使用现场淯乛_炸药的良好条件?/p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">现场淯乛_炸药技术,是通过炸药淯车将已经乛_好的乌及敏化剂{؜合材料从地面站运至爆破点q行自动化装?既保证了炸药q输及用的安全性,同时也提高了生效率<sup>[1]</sup>。؜装R到达施工现场后,作业人员通过现场U重方式来检验؜装R的计量准度及^化炸药的真实密度Q校准好炸药的计量后Q可以按照每孔设计装药量q行装药<sup>[2]</sup>。装药施工时Q首先将装有反向L药包的塑料套袋放|于孔内Q然后将输药软管伸入塑料套袋臛_底进行打药,保证底部装药CQ避免爆后留有根底。现场؜装^化炸药具有运输安全可靠,装药自动化程度高Q装药耦合效果好,爆炸威力大且成本低的优点Q该矿؜装^化炸药每吨约7000元?/p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">2 爆破参数试验</p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">2.1 爆破参数试验思\</p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">爆破参数优化不仅要考虑爆区岩石的性质及结构,q要兼顾生d、现场施工条件及后期铌Ӏ装、运工作效率Q只有结合矿山实际情况进行爆破参C化,才能体现实用价?sup>[3]</sup>。炸药单耗偏高,易生超爆,既爆后岩块过度抛P后排爆沟宽且深,爆区岩石q度破碎Q对节约爆破成本不利。炸药单耗偏低,易造成大块率过高、底部生根底及爆而未动等现象Q极大地影响了爆破效果,不仅增加了解成本,而且对后期铲、装、运工作不利。只有选择合理范围的炸药单耗,制定良好的爆破设计,才能得到较好的爆破效果,使生产效益最?sup>[4]</sup>?/p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">施工现场的爆破参C化主要是通过调整炸药单耗、孔|布|Ş式、孔距、排距、堵塞长度、前排抵抗线、炮孔超深、装药结构、优化爆破网路及加强爆破施工理来实?sup>[5]</sup>。首先根据前期开采爆破参数数据,讑֮较合理的炸药单耗,q匹配相应的孔网参数Q同时优化v爆网路及延期旉Q严D实施工质量控制措?然后Ҏ爆破效果反复试验Q在保爆破效果的基上将参数调整到最佟?/p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">依据前期爆破施工出现的情况,调整爆破参数的具体思\如下Q(1Q爆破后如果前排抛掷较远Q爆堆散而不集中Q则可以降低前排炮孔的装药量Q加大孔距或抉|Uѝ(2Q爆破后爆沟׃宽,则可以调整炮孔的加大排距或减单孔装药量。(3Q通过观察铲装q程Q如果发现爆堆中部粉矿率较高或块度均很小则可以适当的加大孔距和排距。(4Q爆堆表面没有大块,或破非常充分,可以降低单孔装药量,降低装药高度。(5Q爆后底部出现根底或底板Ơ挖Q可以增加超深。常见单耗过高情况下的两U爆破效果如?所C?/p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; text-align: center;"><img src="/ewebeditor/uploadfile/20180919165339251001.jpg" alt="P70923-192337" style="width: 145px; height: 143px;">       <img src="/ewebeditor/uploadfile/20180919165339695002.jpg" alt="P70923-191738" style="width: 148px; height: 139px;"></p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; text-align: center;"> <span style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;">QaQ前排抛掯q,爆堆散而不集中 <span style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;">QbQ爆破后爆沟宽且?/span></span></p> <p align="center" style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">? 爆破效果</p> <p align="center" style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">Fig.1 Blasting effect</p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">2.2 爆破参数试验成果</p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">在爆破现验中Q主炮孔均采用垂直孔,布孔形式为宽孔距排距的三角形,炮孔深优化前后分别?.5m?mQ采用普通导爆管Lq行微差爆破。由于该矿前期大直径L的积压、采划不合理Q导致爆破台阉度ؓ12m?mQ钻孔直径ؓ165mmQ爆破参数的调整只能在上q限制条件下q行合理的调整?/p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">通过技术探讨,主要通过以下方式q行了合理调_1、适当加大爆破孔网参数Q?、减前排孔装药密度和装药量Q解决爆后爆堆过散的问题Q?、在无法改变d直径的条件下Q减单孔装药高度和装药量,来降低单耗;4、通过增加堵塞D늩气间隔,实现炮孔堵塞l构的改变,从而改善上部岩体的破碎效果Q?、调整超深,改善爆破后台阶开挖面的^整度。表1及表2分别?m台阶?2m台阶爆破试验参数?/p> ......<br style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;"> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;"> </p> <br style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;"> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;"></p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;"><br> </p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;"></p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; text-align: left;">作者:蒋跃?d圆(江省高能爆破工E有限公司)本文发表于《现代矿业?018q第8?/p> <p style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; text-align: left;"><a id="l660850625" href="http://www.heardx.com/website/article/1110/76274E28B1CA4AF3A325EBA7F55C60D2.html" target="_blank" style="margin: 0px; padding: 0px; box-sizing: border-box; background: rgb(255, 255, 255); text-decoration: none; transition: all 0.3s ease-in-out 0s; color: rgb(0, 0, 0); font-family: K�K�, K�K�, SimSun; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><strong style="margin: 0px; padding: 0px; box-sizing: border-box; font-weight: bold;"><font style="margin: 0px; padding: 0px; box-sizing: border-box; color: rgb(0, 51, 102);">览全文误论文频道搜烦《某露天铜矿爆破开采综合降耗试验研I及应用?/font></strong></a></p> <br class="Apple-interchange-newline"> <br> <p></p> </div> </div> <div id="l660850625" class='content-keyword'><span style='color: red'>标签:  </span><a id="l660850625" target='_blank' href='/website/article/1117/index.html?tp=0&tl=&ah=&un=&nt=&kw=%u9732%u5929%u94DC%u77FF&pg=1&sc=Article&ti=2AA0FC1963F7438E96508DA8ECE712CC&tc=&si=4F7AFBED28F54C8CA75B3AD068C46E25' style='color: black'>露天铜矿</a> <a id="l660850625" target='_blank' href='/website/article/1117/index.html?tp=0&tl=&ah=&un=&nt=&kw=%u53F0%u9636%u7206%u7834&pg=1&sc=Article&ti=2AA0FC1963F7438E96508DA8ECE712CC&tc=&si=4F7AFBED28F54C8CA75B3AD068C46E25' 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