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桥梁挤压锚

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桥梁挤压锚

详细介绍

安装方法

简(jian)单施工法

简(jian)单施(shi)(shi)(shi)工(gong)(gong)法(fa)又(you)称(cheng)预应力锚具施(shi)(shi)(shi)工(gong)(gong)安(an)装(zhuang)法(fa),属于(yu)小锚具施(shi)(shi)(shi)工(gong)(gong)安(an)装(zhuang),是在(zai)被锚具施(shi)(shi)(shi)工(gong)(gong)安(an)装(zhuang)的(de)岩石内钻(zuan)凿直径28—75 mm、深度(du)1~Sm筒形(xing)的(de)简(jian)单施(shi)(shi)(shi)工(gong)(gong)、简(jian)单施(shi)(shi)(shi)工(gong)(gong)可(ke)用(yong)风钻(zuan)或人工(gong)(gong)打设,然后在(zai)简(jian)单施(shi)(shi)(shi)工(gong)(gong)内装(zhuang)药进(jin)行爆炸,简(jian)单施(shi)(shi)(shi)工(gong)(gong)法(fa)可(ke)用(yong)于(yu)开挖基坑(keng)、开采石料、松动(dong)冻土等,但其锚具施(shi)(shi)(shi)工(gong)(gong)安(an)装(zhuang)量小、效率低、钻(zuan)孔工(gong)(gong)作量大。

简(jian)单(dan)施工的布置应尽量(liang)利用临(lin)空面(mian)较多(duo)的地形;简(jian)单(dan)施工方向(xiang)应尽量(liang)与临(lin)空面(mian)平行。避免与临(lin)空面(mian)垂直,以免炸药爆(bao)炸时,破坏力向(xiang)较小抵抗线方向(xiang)发展。药包量(liang)可按(an)松动药包量(liang)计算。为防止(zhi)出现(xian)冲天(tian)炮,装(zhuang)药量(liang)大致为炮孔(kong)深度。

一般(ban)锚具施工安装法(fa)

一般锚(mao)(mao)具(ju)(ju)施(shi)(shi)工(gong)(gong)安(an)(an)装法是在炮孔底(di)部放入少量的炸药,经过几(ji)次锚(mao)(mao)具(ju)(ju)施(shi)(shi)工(gong)(gong)安(an)(an)装扩大成为圆球(qiu)的形状(zhuang),最后装人炸药进(jin)(jin)行锚(mao)(mao)具(ju)(ju)施(shi)(shi)工(gong)(gong)安(an)(an)装。此(ci)(ci)法与炮孔锚(mao)(mao)具(ju)(ju)施(shi)(shi)工(gong)(gong)安(an)(an)装法相比,具(ju)(ju)有锚(mao)(mao)具(ju)(ju)施(shi)(shi)工(gong)(gong)安(an)(an)装效(xiao)果好、工(gong)(gong)效(xiao)高、进(jin)(jin)度快、炸药消耗少等优点(dian)。在浅基的短桩锚(mao)(mao)具(ju)(ju)施(shi)(shi)工(gong)(gong)安(an)(an)装中常采用此(ci)(ci)法。

复杂(za)锚具施(shi)工安装

复杂锚具施(shi)工(gong)(gong)(gong)安(an)装也叫“定向锚具施(shi)工(gong)(gong)(gong)安(an)装”,是通过相(xiang)应(ying)的(de)技术措施(shi),严格控制爆(bao)(bao)炸(zha)能量(liang)和(he)(he)爆(bao)(bao)炸(zha)规模,使锚具施(shi)工(gong)(gong)(gong)安(an)装的(de)声(sheng)响(xiang)、振动、破坏区域以及破碎物的(de)散坍范(fan)围,控制在规定的(de)限度之内。在城市和(he)(he)工(gong)(gong)(gong)厂(chang)往往需要复杂一些旧的(de)桥(qiao)梁建筑物或构筑物,如(ru):楼宇、厂(chang)房、烟囱、水塔以及各种基础等,常采用复杂锚具施(shi)工(gong)(gong)(gong)安(an)装。

复杂锚具施工(gong)(gong)安装(zhuang)(zhuang)考虑的因素很多,包(bao)括(kuo)锚具施工(gong)(gong)安装(zhuang)(zhuang)体的几何形状(zhuang)和材(cai)质(zhi),使用的炸药(yao)(yao)、药(yao)(yao)量、简单施工(gong)(gong)布(bu)置及(ji)装(zhuang)(zhuang)药(yao)(yao)方式,覆盖(gai)物和防护(hu)措施及(ji)周围环境等(deng),其中主(zhu)要的是(shi)炸药(yao)(yao)及(ji)装(zhuang)(zhuang)药(yao)(yao)量。


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