机械预(yu)切糟法(fa)(fa)(fa)(fa)，预(yu)衬砌(qi)法(fa)(fa)(fa)(fa)，水(shui)平旋(xuan)喷(pen)注(zhu)(zhu)(zhu)浆法(fa)(fa)(fa)(fa)，超前(qian)(qian)(qian)小导管(guan)(guan)(guan)法(fa)(fa)(fa)(fa)，超前(qian)(qian)(qian)锚杆法(fa)(fa)(fa)(fa)、冻(dong)结法(fa)(fa)(fa)(fa)等(deng)等(deng)。其中管(guan)(guan)(guan)棚(peng)(peng)(peng)法(fa)(fa)(fa)(fa)、水(shui)平旋(xuan)喷(pen)注(zhu)(zhu)(zhu)浆法(fa)(fa)(fa)(fa)、小导管(guan)(guan)(guan)法(fa)(fa)(fa)(fa)等(deng)支(zhi)(zhi)护(hu)(hu)方(fang)法(fa)(fa)(fa)(fa)同时也改良和(he)加(jia)固(gu)了地(di)(di)(di)(di)(di)层。管(guan)(guan)(guan)棚(peng)(peng)(peng)注(zhu)(zhu)(zhu)浆支(zhi)(zhi)护(hu)(hu)就(jiu)是(shi)把一组(zu)钢(gang)(gang)(gang)管(guan)(guan)(guan)沿开挖(wa)轮廓外(wai)(wai)己(ji)钻好的(de)(de)(de)(de)孔中打(da)入(ru)地(di)(di)(di)(di)(di)层内(nei)，并与钢(gang)(gang)(gang)拱架组(zu)合(he)形(xing)成强(qiang)大(da)(da)的(de)(de)(de)(de)棚(peng)(peng)(peng)架预(yu)支(zhi)(zhi)护(hu)(hu)加(jia)固(gu)体系，支(zhi)(zhi)承来自于管(guan)(guan)(guan)棚(peng)(peng)(peng)上部的(de)(de)(de)(de)荷(he)载，通过钢(gang)(gang)(gang)管(guan)(guan)(guan)的(de)(de)(de)(de)梅花形(xing)布置的(de)(de)(de)(de)注(zhu)(zhu)(zhu)浆孔加(jia)压(ya)向地(di)(di)(di)(di)(di)层中注(zhu)(zhu)(zhu)浆，以加(jia)固(gu)软弱(ruo)破碎(sui)(sui)的(de)(de)(de)(de)地(di)(di)(di)(di)(di)层，提高(gao)(gao)地(di)(di)(di)(di)(di)层的(de)(de)(de)(de)自稳能力。管(guan)(guan)(guan)棚(peng)(peng)(peng)注(zhu)(zhu)(zhu)浆是(shi)一种长(zhang)距离(li)(li)超前(qian)(qian)(qian)支(zhi)(zhi)护(hu)(hu)方(fang)法(fa)(fa)(fa)(fa)，超前(qian)(qian)(qian)距离(li)(li)长(zhang)，刚度(du)较大(da)(da)，适用于掌子面(mian)不能自稳、含水(shui)的(de)(de)(de)(de)地(di)(di)(di)(di)(di)层，控制地(di)(di)(di)(di)(di)表沉降(jiang)、防渗止水(shui)的(de)(de)(de)(de)效果(guo)较好，施(shi)工工艺要求较高(gao)(gao)。如将管(guan)(guan)(guan)棚(peng)(peng)(peng)注(zhu)(zhu)(zhu)浆与小导管(guan)(guan)(guan)补充注(zhu)(zhu)(zhu)浆法(fa)(fa)(fa)(fa)结合(he)，除具有大(da)(da)管(guan)(guan)(guan)棚(peng)(peng)(peng)的(de)(de)(de)(de)特(te)点外(wai)(wai)，能够防止管(guan)(guan)(guan)棚(peng)(peng)(peng)下(xia)方(fang)三角土(tu)(tu)体的(de)(de)(de)(de)塌落，这种长(zhang)短结合(he)的(de)(de)(de)(de)预(yu)支(zhi)(zhi)护(hu)(hu)效果(guo)更(geng)为理想。管(guan)(guan)(guan)棚(peng)(peng)(peng)支(zhi)(zhi)护(hu)(hu)适用范围根据国(guo)内(nei)外(wai)(wai)的(de)(de)(de)(de)施(shi)工实践，综合(he)我(wo)国(guo)目前(qian)(qian)(qian)地(di)(di)(di)(di)(di)下(xia)工程管(guan)(guan)(guan)棚(peng)(peng)(peng)支(zhi)(zhi)护(hu)(hu)应(ying)用的(de)(de)(de)(de)实际案例，管(guan)(guan)(guan)棚(peng)(peng)(peng)支(zhi)(zhi)护(hu)(hu)可适用于：软弱(ruo)砂土(tu)(tu)质地(di)(di)(di)(di)(di)层、砂卵(luan)砾石地(di)(di)(di)(di)(di)层，膨(peng)胀性软流塑(su)、硬可塑(su)状粉质粘土(tu)(tu)地(di)(di)(di)(di)(di)层，裂(lie)隙(xi)发育岩(yan)体、突(tu)泥突(tu)水(shui)段(duan)、断(duan)层破碎(sui)(sui)带、塌方(fang)段(duan)、破碎(sui)(sui)土(tu)(tu)岩(yan)堆地(di)(di)(di)(di)(di)段(duan)、浅埋大(da)(da)偏压(ya)等(deng)地(di)(di)(di)(di)(di)质和(he)地(di)(di)(di)(di)(di)下(xia)水(shui)丰(feng)富条件的(de)(de)(de)(de)地(di)(di)(di)(di)(di)下(xia)构筑物施(shi)工的(de)(de)(de)(de)支(zhi)(zhi)护(hu)(hu)，隧道进出口段(duan)开挖(wa)的(de)(de)(de)(de)支(zhi)(zhi)护(hu)(hu)，也多(duo)应(ying)用于地(di)(di)(di)(di)(di)铁等(deng)穿越(yue)城区的(de)(de)(de)(de)地(di)(di)(di)(di)(di)下(xia)工程的(de)(de)(de)(de)开挖(wa)预(yu)支(zhi)(zhi)护(hu)(hu)。铜仁跟(gen)管(guan)(guan)(guan)厂家——贵州合(he)纵达钢(gang)(gang)(gang)结构有限责任(ren)公司。迪庆R780跟(gen)管(guan)(guan)(guan)施(shi)工

贵(gui)(gui)(gui)州(zhou)钢花管(guan)(guan)(guan)(guan)(guan)声(sheng)(sheng)(sheng)测(ce)管(guan)(guan)(guan)(guan)(guan)焊(han)接(jie)(jie)是两(liang)种材(cai)(cai)料(liao)(liao)的(de)连接(jie)(jie)，通过在材(cai)(cai)料(liao)(liao)熔(rong)化温度(du)以上加热来实现(xian)。声(sheng)(sheng)(sheng)测(ce)管(guan)(guan)(guan)(guan)(guan)焊(han)接(jie)(jie)技术有(you)激光声(sheng)(sheng)(sheng)测(ce)管(guan)(guan)(guan)(guan)(guan)焊(han)接(jie)(jie)、固态声(sheng)(sheng)(sheng)测(ce)管(guan)(guan)(guan)(guan)(guan)焊(han)接(jie)(jie)和电(dian)弧声(sheng)(sheng)(sheng)测(ce)管(guan)(guan)(guan)(guan)(guan)焊(han)接(jie)(jie)。在电(dian)弧声(sheng)(sheng)(sheng)测(ce)管(guan)(guan)(guan)(guan)(guan)焊(han)接(jie)(jie)中，两(liang)块用电(dian)弧熔(rong)化母金属部(bu)件和填充材(cai)(cai)料(liao)(liao)。重(zhong)要的(de)是要知(zhi)道这(zhei)三(san)种材(cai)(cai)料(liao)(liao)的(de)成分(fen)，才(cai)能计算出预期的(de)焊(han)道的(de)较终成分(fen)。套筒(tong)式声(sheng)(sheng)(sheng)测(ce)管(guan)(guan)(guan)(guan)(guan)是一种预埋(mai)套筒(tong)式声(sheng)(sheng)(sheng)测(ce)管(guan)(guan)(guan)(guan)(guan)系统，用于(yu)混(hun)凝土中的(de)施工缝(feng)(feng)、冷(leng)接(jie)(jie)缝(feng)(feng)、管(guan)(guan)(guan)(guan)(guan)子渗(shen)缝(feng)(feng)、地墙之(zhi)间空(kong)隙(xi)等(deng)处的(de)长(zhang)久密(mi)封(feng)。在新和旧混(hun)凝土的(de)接(jie)(jie)缝(feng)(feng)之(zhi)间安装套筒(tong)式声(sheng)(sheng)(sheng)测(ce)管(guan)(guan)(guan)(guan)(guan)是非(fei)常合适的(de)。在预埋(mai)套筒(tong)式声(sheng)(sheng)(sheng)测(ce)管(guan)(guan)(guan)(guan)(guan)中注入浆液(ye)可以密(mi)封(feng)施工缝(feng)(feng)、冷(leng)接(jie)(jie)缝(feng)(feng)、管(guan)(guan)(guan)(guan)(guan)子渗(shen)漏(lou)和地墙之(zhi)间的(de)接(jie)(jie)缝(feng)(feng)。做成长(zhang)久性密(mi)封(feng)。泸州(zhou)R780管(guan)(guan)(guan)(guan)(guan)厂(chang)家(jia)贵(gui)(gui)(gui)州(zhou)管(guan)(guan)(guan)(guan)(guan)棚厂(chang)家(jia)——贵(gui)(gui)(gui)州(zhou)合纵达钢结(jie)构有(you)限(xian)责(ze)任公司。

贵(gui)州合纵(zong)达钢(gang)结构(gou)有限责任公(gong)司推(tui)荐：方(fang)(fang)(fang)(fang)(fang)(fang)管(guan)(guan)(guan)(guan)，是方(fang)(fang)(fang)(fang)(fang)(fang)形(xing)管(guan)(guan)(guan)(guan)材(cai)的(de)(de)一(yi)种称呼，也就是边(bian)长相等(deng)的(de)(de)的(de)(de)钢(gang)管(guan)(guan)(guan)(guan)。在抗弯、抗扭强度(du)相同时，重量较轻，所以用于制造机械零(ling)件和工程(cheng)结构(gou)。与(yu)方(fang)(fang)(fang)(fang)(fang)(fang)管(guan)(guan)(guan)(guan)相比，圆(yuan)管(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)内腔光(guang)洁，形(xing)成边(bian)界(jie)层，这不但(dan)增强了(le)(le)热(re)交换，而且提高了(le)(le)防污性(xing)能；在管(guan)(guan)(guan)(guan)道内转弯较多的(de)(de)情况下(xia)(xia)，如果做成方(fang)(fang)(fang)(fang)(fang)(fang)形(xing)管(guan)(guan)(guan)(guan)道，会导致转弯处(chu)的(de)(de)局部阻(zu)力太大(da)，从而增加(jia)水泵的(de)(de)扬(yang)程(cheng)，不经济，而圆(yuan)管(guan)(guan)(guan)(guan)就完全(quan)不一(yi)样(yang)了(le)(le)，流体在圆(yuan)管(guan)(guan)(guan)(guan)换热(re)时，不会受(shou)太大(da)的(de)(de)局部阻(zu)力，使换热(re)工作(zuo)能顺利(li)进(jin)行下(xia)(xia)去。方(fang)(fang)(fang)(fang)(fang)(fang)管(guan)(guan)(guan)(guan)规格尺寸方(fang)(fang)(fang)(fang)(fang)(fang)管(guan)(guan)(guan)(guan)的(de)(de)规格标示方(fang)(fang)(fang)(fang)(fang)(fang)法：主要是以边(bian)宽(kuan)(kuan)*边(bian)宽(kuan)(kuan)*管(guan)(guan)(guan)(guan)壁厚度(du)表(biao)示。如16×16×0.4～1.5则表(biao)示边(bian)宽(kuan)(kuan)为(wei)16mm，管(guan)(guan)(guan)(guan)壁厚度(du)为(wei)0.4-1.5mm。方(fang)(fang)(fang)(fang)(fang)(fang)管(guan)(guan)(guan)(guan)分(fen)类按生产工艺分(fen)：热(re)轧无缝方(fang)(fang)(fang)(fang)(fang)(fang)管(guan)(guan)(guan)(guan)、冷拔无缝方(fang)(fang)(fang)(fang)(fang)(fang)管(guan)(guan)(guan)(guan)、挤压无缝方(fang)(fang)(fang)(fang)(fang)(fang)管(guan)(guan)(guan)(guan)、焊接方(fang)(fang)(fang)(fang)(fang)(fang)管(guan)(guan)(guan)(guan)。按材(cai)质(zhi)分(fen)：普碳钢(gang)方(fang)(fang)(fang)(fang)(fang)(fang)管(guan)(guan)(guan)(guan)、低(di)合金(jin)方(fang)(fang)(fang)(fang)(fang)(fang)管(guan)(guan)(guan)(guan)。普碳钢(gang)分(fen)为(wei)：Q195、Q215、Q235、SS400、20#钢(gang)、45#钢(gang)等(deng)；低(di)合金(jin)钢(gang)分(fen)为(wei)Q345、16Mn、Q390、ST52-3等(deng)。

超前小导管(guan)(guan)(guan)(guan)(guan)施(shi)工(gong)的(de)(de)(de)各项参数确定(ding)应(ying)根据(ju)围岩边界地质条件、围岩状况(kuang)、支护(hu)结构形式(shi)及隧(sui)道断面尺(chi)寸而定(ding)。一(yi)般(ban)(ban)超前小导管(guan)(guan)(guan)(guan)(guan)施(shi)工(gong)沿着(zhe)开(kai)挖(wa)轮廓线(xian)120度(du)(du)(du)范围设置。一(yi)般(ban)(ban)情况(kuang)下：小导管(guan)(guan)(guan)(guan)(guan)长(zhang)度(du)(du)(du)L=上台阶高度(du)(du)(du)+2m。小导管(guan)(guan)(guan)(guan)(guan)直径(jing)(jing)(jing)(jing)：38-50mm。小导管(guan)(guan)(guan)(guan)(guan)前段做成约10cm长(zhang)的(de)(de)(de)圆(yuan)锥状，在(zai)尾端(duan)焊(han)接(jie)直径(jing)(jing)(jing)(jing)6~8mm的(de)(de)(de)钢筋箍(gu)。外插(cha)(cha)角度(du)(du)(du)一(yi)般(ban)(ban)控制在(zai)10度(du)(du)(du)~15度(du)(du)(du)。注(zhu)浆压力控制在(zai)2MP左右。浆液扩散(san)半径(jing)(jing)(jing)(jing)一(yi)般(ban)(ban)为(wei)0.5m。注(zhu)浆速度(du)(du)(du)控制在(zai)50-100L/MIN。每循(xun)环小导管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)搭(da)接(jie)长(zhang)度(du)(du)(du)控制在(zai)1m以内(nei)。制作(zuo)(zuo)：1、一(yi)般(ban)(ban)采用(yong)直径(jing)(jing)(jing)(jing)38~50mm的(de)(de)(de)无缝(feng)钢管(guan)(guan)(guan)(guan)(guan)制作(zuo)(zuo)。2、在(zai)小导管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)前端(duan)做成约10cm长(zhang)的(de)(de)(de)圆(yuan)锥状，在(zai)尾端(duan)焊(han)接(jie)直径(jing)(jing)(jing)(jing)6~8mm钢筋箍(gu)。距后端(duan)100cm内(nei)不开(kai)孔(kong)(kong)(kong)，剩余部(bu)分按(an)20~30cm梅花形布设直径(jing)(jing)(jing)(jing)6mm的(de)(de)(de)溢浆孔(kong)(kong)(kong)。安装：可(ke)(ke)采用(yong)引孔(kong)(kong)(kong)或直接(jie)顶入方式(shi)。1、用(yong)电(dian)钻钻孔(kong)(kong)(kong)，孔(kong)(kong)(kong)直径(jing)(jing)(jing)(jing)大于小导管(guan)(guan)(guan)(guan)(guan)直径(jing)(jing)(jing)(jing)的(de)(de)(de)10-20mm，孔(kong)(kong)(kong)深(shen)视导管(guan)(guan)(guan)(guan)(guan)长(zhang)度(du)(du)(du)而定(ding)。2、插(cha)(cha)入导管(guan)(guan)(guan)(guan)(guan)如插(cha)(cha)入有困难，可(ke)(ke)用(yong)带有顶进功能的(de)(de)(de)风钻将套管(guan)(guan)(guan)(guan)(guan)顶入。3、用(yong)吹风管(guan)(guan)(guan)(guan)(guan)吹出孔(kong)(kong)(kong)内(nei)的(de)(de)(de)杂(za)物(wu)。4、小导管(guan)(guan)(guan)(guan)(guan)尾缠棉纱(sha)，使得(de)小导管(guan)(guan)(guan)(guan)(guan)与钻孔(kong)(kong)(kong)密贴，并(bing)用(yong)棉纱(sha)将空口堵紧。5、小导管(guan)(guan)(guan)(guan)(guan)安装后必须使得(de)其周(zhou)围一(yi)定(ding)范围内(nei)用(yong)喷射(she)砼封闭。喷射(she)厚度(du)(du)(du)控制在(zai)5-8cm。观(guan)山湖区(qu)跟管(guan)(guan)(guan)(guan)(guan)厂家——贵州合纵达钢结构有限责任公司。

贵州(zhou)合纵达钢(gang)结构有限责任公司推荐：经常从事固体矿产地质(zhi)勘(kan)探(tan)行业的(de)(de)人应该是(shi)十分了解岩(yan)心(xin)钻(zuan)探(tan)的(de)(de)。而跟(gen)管(guan)(guan)(guan)钻(zuan)进(jin)(jin)作(zuo)为(wei)地质(zhi)岩(yan)心(xin)钻(zuan)探(tan)的(de)(de)一(yi)种(zhong)特殊方法(fa)，相关工作(zuo)者应该也不会对它感到陌(mo)生。什么是(shi)跟(gen)管(guan)(guan)(guan)呢？跟(gen)管(guan)(guan)(guan)就是(shi)由国金(jin)(jin)金(jin)(jin)属制作(zuo)而成的(de)(de)一(yi)种(zhong)金(jin)(jin)属管(guan)(guan)(guan)，它就是(shi)用来做(zuo)跟(gen)管(guan)(guan)(guan)钻(zuan)进(jin)(jin)施工的(de)(de)。跟(gen)管(guan)(guan)(guan)钻(zuan)进(jin)(jin)技术虽然能轻松解决(jue)勘(kan)测或施工时遇到的(de)(de)难题，但它对跟(gen)管(guan)(guan)(guan)的(de)(de)要(yao)求非(fei)常高，而且所采用的(de)(de)设备需要(yao)配置多种(zhong)钻(zuan)具。并且钻(zuan)具的(de)(de)配置要(yao)尽量(liang)好一(yi)些，因为(wei)钻(zuan)孔效率很大程度上受它的(de)(de)影响。花溪(xi)区管(guan)(guan)(guan)棚厂家(jia)——贵州(zhou)合纵达钢(gang)结构有限责任公司。泸州(zhou)R780管(guan)(guan)(guan)厂家(jia)

开阳(yang)县钢花管厂家——贵州(zhou)合纵达(da)钢结构有限(xian)责任公司。迪庆R780跟管施工

贵州(zhou)合纵达(da)钢结构有(you)(you)限责任(ren)公(gong)司推荐：跟(gen)(gen)(gen)管(guan)(guan)钻(zuan)(zuan)(zuan)(zuan)(zuan)进(jin)作(zuo)为地(di)质岩心钻(zuan)(zuan)(zuan)(zuan)(zuan)探的(de)(de)一(yi)(yi)种特殊方法，它是(shi)将风动潜孔(kong)锤改用(yong)(yong)偏心钻(zuan)(zuan)(zuan)(zuan)(zuan)具(ju)(ju),增加套(tao)管(guan)(guan)和(he)套(tao)管(guan)(guan)靴。跟(gen)(gen)(gen)管(guan)(guan)钻(zuan)(zuan)(zuan)(zuan)(zuan)进(jin)对跟(gen)(gen)(gen)管(guan)(guan)的(de)(de)要(yao)(yao)(yao)(yao)(yao)求非(fei)常高(gao)，而且(qie)(qie)所(suo)采用(yong)(yong)的(de)(de)设备需要(yao)(yao)(yao)(yao)(yao)配置多种钻(zuan)(zuan)(zuan)(zuan)(zuan)具(ju)(ju)。并(bing)且(qie)(qie)钻(zuan)(zuan)(zuan)(zuan)(zuan)具(ju)(ju)的(de)(de)配置要(yao)(yao)(yao)(yao)(yao)尽量(liang)好一(yi)(yi)些(xie)，因(yin)为钻(zuan)(zuan)(zuan)(zuan)(zuan)孔(kong)效率(lv)很(hen)大程(cheng)度(du)上受(shou)它的(de)(de)影响(xiang)。接(jie)下来我们就来说(shuo)一(yi)(yi)说(shuo)跟(gen)(gen)(gen)管(guan)(guan)钻(zuan)(zuan)(zuan)(zuan)(zuan)进(jin)施(shi)(shi)(shi)(shi)工的(de)(de)方法。1.首(shou)先要(yao)(yao)(yao)(yao)(yao)了(le)解地(di)层的(de)(de)基本概况和(he)地(di)质条(tiao)件。了(le)解地(di)层是(shi)否(fou)松散，是(shi)否(fou)是(shi)破碎层松软的(de)(de)地(di)质，地(di)层是(shi)否(fou)难成孔(kong)，是(shi)否(fou)能够采取(qu)跟(gen)(gen)(gen)管(guan)(guan)钻(zuan)(zuan)(zuan)(zuan)(zuan)进(jin)，避(bi)(bi)免(mian)采取(qu)不合适的(de)(de)方法增添施(shi)(shi)(shi)(shi)工难度(du)。2.钻(zuan)(zuan)(zuan)(zuan)(zuan)机(ji)脚手(shou)架要(yao)(yao)(yao)(yao)(yao)满足安全(quan)操作(zuo)要(yao)(yao)(yao)(yao)(yao)求，要(yao)(yao)(yao)(yao)(yao)能承(cheng)受(shou)钻(zuan)(zuan)(zuan)(zuan)(zuan)机(ji)过(guo)程(cheng)中(zhong)(zhong)产生的(de)(de)振荡冲击(ji)以及其他荷载。3.钻(zuan)(zuan)(zuan)(zuan)(zuan)机(ji)、钻(zuan)(zuan)(zuan)(zuan)(zuan)具(ju)(ju)、套(tao)管(guan)(guan)等工具(ju)(ju)在施(shi)(shi)(shi)(shi)工前一(yi)(yi)定(ding)要(yao)(yao)(yao)(yao)(yao)反复检查(cha)(cha)，如果(guo)有(you)(you)问题(ti)一(yi)(yi)律不准(zhun)使用(yong)(yong)，避(bi)(bi)免(mian)施(shi)(shi)(shi)(shi)工过(guo)程(cheng)中(zhong)(zhong)发生安全(quan)事故(gu)。4.在造(zao)孔(kong)的(de)(de)过(guo)程(cheng)中(zhong)(zhong)，如果(guo)要(yao)(yao)(yao)(yao)(yao)通(tong)过(guo)复杂地(di)段一(yi)(yi)定(ding)要(yao)(yao)(yao)(yao)(yao)小心谨慎，缓(huan)慢通(tong)过(guo)。如果(guo)发生意外情况一(yi)(yi)定(ding)要(yao)(yao)(yao)(yao)(yao)查(cha)(cha)明(ming)原因(yin)，排除故(gu)障(zhang)后(hou)(hou)再进(jin)行施(shi)(shi)(shi)(shi)工。要(yao)(yao)(yao)(yao)(yao)频(pin)繁检查(cha)(cha)实用(yong)(yong)工具(ju)(ju)的(de)(de)外观情况，如果(guo)发现有(you)(you)裂痕或者其他情况一(yi)(yi)定(ding)要(yao)(yao)(yao)(yao)(yao)立刻(ke)进(jin)行更换，因(yin)为跟(gen)(gen)(gen)管(guan)(guan)钻(zuan)(zuan)(zuan)(zuan)(zuan)进(jin)对所(suo)使用(yong)(yong)的(de)(de)工具(ju)(ju)要(yao)(yao)(yao)(yao)(yao)求很(hen)高(gao)，要(yao)(yao)(yao)(yao)(yao)避(bi)(bi)免(mian)因(yin)为工具(ju)(ju)的(de)(de)原因(yin)造(zao)成造(zao)孔(kong)失败的(de)(de)后(hou)(hou)果(guo)。5.造(zao)孔(kong)结束后(hou)(hou)，在退钻(zuan)(zuan)(zuan)(zuan)(zuan)具(ju)(ju)时，动作(zuo)要(yao)(yao)(yao)(yao)(yao)尽可(ke)能的(de)(de)缓(huan)慢，力度(du)也要(yao)(yao)(yao)(yao)(yao)尽可(ke)能的(de)(de)轻柔，避(bi)(bi)免(mian)操作(zuo)力度(du)过(guo)大，损(sun)坏钻(zuan)(zuan)(zuan)(zuan)(zuan)头和(he)管(guan)(guan)靴。迪(di)庆R780跟(gen)(gen)(gen)管(guan)(guan)施(shi)(shi)(shi)(shi)工

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