貴(gui)州合縱達鋼(gang)結構(gou)(gou)有限責(ze)任公司(si)推(tui)薦：使用鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)接頭(tou)(tou)能(neng)給我們(men)生活(huo)中帶來什么(me)好處呢，鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)接頭(tou)(tou)是(shi)用于管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道和(he)(he)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道之間的(de)(de)(de)(de)連接炎的(de)(de)(de)(de)，也是(shi)元(yuan)件(jian)和(he)(he)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道之間可(ke)以(yi)拆(chai)裝的(de)(de)(de)(de)連接點，所(suo)以(yi)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)接頭(tou)(tou)在建筑方面是(shi)不(bu)可(ke)或(huo)缺的(de)(de)(de)(de)，它和(he)(he)液壓管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道是(shi)兩(liang)個主要構(gou)(gou)成(cheng)部分。絲(si)扣(kou)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)絲(si)扣(kou)連接鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)用雙(shuang)芯導(dao)(dao)線(xian)或(huo)雙(shuang)根絞線(xian)連接的(de)(de)(de)(de)交流(liu)電(dian)(dian)路：紅黑色(se)(se)并行。直流(liu)電(dian)(dian)路的(de)(de)(de)(de)正極：棕色(se)(se)；負極：藍(lan)(lan)色(se)(se)；接地中線(xian)：淡藍(lan)(lan)色(se)(se)。半導(dao)(dao)體(ti)電(dian)(dian)路的(de)(de)(de)(de)半導(dao)(dao)體(ti)三極管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)集(ji)電(dian)(dian)極：紅色(se)(se)；基極：；發射極：藍(lan)(lan)色(se)(se)。半導(dao)(dao)體(ti)二極管(guan)(guan)(guan)(guan)(guan)(guan)(guan)和(he)(he)整流(liu)二極管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)陽極：藍(lan)(lan)色(se)(se)；陰極：紅色(se)(se)。雙(shuang)壁(bi)(bi)熱(re)縮(suo)(suo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)又(you)名(ming)雙(shuang)壁(bi)(bi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)，含膠熱(re)縮(suo)(suo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)，雙(shuang)層熱(re)縮(suo)(suo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)，雙(shuang)壁(bi)(bi)熱(re)縮(suo)(suo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)是(shi)熱(re)縮(suo)(suo)套管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)一種，那么(me)雙(shuang)壁(bi)(bi)熱(re)縮(suo)(suo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)是(shi)如何出現的(de)(de)(de)(de)呢。雙(shuang)壁(bi)(bi)熱(re)縮(suo)(suo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)相對(dui)于普通的(de)(de)(de)(de)熱(re)縮(suo)(suo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)，即不(bu)含膠的(de)(de)(de)(de)熱(re)縮(suo)(suo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)，我們(men)稱之為單壁(bi)(bi)熱(re)縮(suo)(suo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)來加以(yi)區分，雙(shuang)壁(bi)(bi)熱(re)縮(suo)(suo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)除(chu)了密封更好外，因為里面有一層膠水，機械性(xing)能(neng)也相對(dui)于單壁(bi)(bi)熱(re)縮(suo)(suo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)更好。黔東南跟管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠家——貴(gui)州合縱達鋼(gang)結構(gou)(gou)有限責(ze)任公司(si)。保山支護小導(dao)(dao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)

鋼(gang)(gang)管(guan)(guan)(guan)(guan)也可(ke)稱為(wei)鋼(gang)(gang)花(hua)管(guan)(guan)(guan)(guan)，灌(guan)漿小(xiao)管(guan)(guan)(guan)(guan)，以及先進的(de)支撐管(guan)(guan)(guan)(guan)。花(hua)管(guan)(guan)(guan)(guan)是通過將鋼(gang)(gang)管(guan)(guan)(guan)(guan)沿徑(jing)(jing)向(xiang)旋(xuan)(xuan)轉90度來鉆(zhan)鋼(gang)(gang)管(guan)(guan)(guan)(guan)而制(zhi)成的(de)。灌(guan)漿孔(kong)螺旋(xuan)(xuan)狀(zhuang)地圍(wei)繞(rao)鋼(gang)(gang)管(guan)(guan)(guan)(guan)布(bu)置(zhi)，鋼(gang)(gang)管(guan)(guan)(guan)(guan)的(de)前(qian)端逐漸變細，以便(bian)于驅(qu)動(dong)進入巖層。直(zhi)徑(jing)(jing)范圍(wei)從32到165，壁(bi)厚范圍(wei)從2到6毫米(mi)(mi)。工(gong)程設(she)計需(xu)要鉆(zhan)出相應直(zhi)徑(jing)(jing)的(de)漿料(liao)孔(kong)。鋼(gang)(gang)花(hua)管(guan)(guan)(guan)(guan)的(de)數(shu)量(liang)和布(bu)置(zhi)應根(gen)據基地鐵樁地鐵的(de)直(zhi)徑(jing)(jing)預埋不同的(de)數(shu)量(liang)。在一(yi)般的(de)公路工(gong)程中，當樁徑(jing)(jing)小(xiao)于100多(duo)少0毫米(mi)(mi)時，沿樁徑(jing)(jing)埋設(she)兩(liang)個隧(sui)道鋼(gang)(gang)花(hua)管(guan)(guan)(guan)(guan)。當樁徑(jing)(jing)為(wei)1000多(duo)少毫米(mi)(mi)至(zhi)1500毫米(mi)(mi)時，三(san)根(gen)鋼(gang)(gang)制(zhi)花(hua)管(guan)(guan)(guan)(guan)埋成等邊(bian)三(san)角形。宜良注(zhu)漿管(guan)(guan)(guan)(guan)生產(chan)廠家觀山湖(hu)區跟管(guan)(guan)(guan)(guan)廠家——貴州合(he)縱達鋼(gang)(gang)結構有限責任(ren)公司。

套(tao)管護孔(kong)(kong)鉆(zhan)(zhan)進(jin)的(de)特點之(zhi)一(yi)是(shi)(shi)只跟進(jin)預定長(chang)度套(tao)管，套(tao)管回轉的(de)動力來自鉆(zhan)(zhan)桿(gan)而非孔(kong)(kong)口鉆(zhan)(zhan)機(ji)直(zhi)接(jie)輸入，套(tao)管可替代(dai)部分(fen)鉆(zhan)(zhan)桿(gan)功能。穿層(ceng)(ceng)(ceng)抽采鉆(zhan)(zhan)孔(kong)(kong)是(shi)(shi)抽采突出煤(mei)層(ceng)(ceng)(ceng)瓦斯(si)，消(xiao)除煤(mei)與瓦斯(si)突出問(wen)題的(de)有(you)效方(fang)法之(zhi)一(yi)。但在強突出煤(mei)層(ceng)(ceng)(ceng)，施(shi)工(gong)穿層(ceng)(ceng)(ceng)孔(kong)(kong)往(wang)往(wang)會誘發(fa)瓦斯(si)與煤(mei)突出，引起噴(pen)孔(kong)(kong)、塌孔(kong)(kong)和(he)(he)卡(ka)鉆(zhan)(zhan)等(deng)，造成鉆(zhan)(zhan)孔(kong)(kong)深度淺、成孔(kong)(kong)率低，甚(shen)至能引起孔(kong)(kong)突和(he)(he)劇烈的(de)煤(mei)炮。目前一(yi)般(ban)采取的(de)措施(shi)為(wei)，鉆(zhan)(zhan)孔(kong)(kong)施(shi)工(gong)過程時，在孔(kong)(kong)口安裝(zhuang)防(fang)噴(pen)裝(zhuang)置控制(zhi)孔(kong)(kong)噴(pen)，防(fang)噴(pen)裝(zhuang)置在一(yi)般(ban)的(de)突出煤(mei)層(ceng)(ceng)(ceng)鉆(zhan)(zhan)孔(kong)(kong)施(shi)工(gong)中使(shi)用具(ju)有(you)一(yi)定效果，但在煤(mei)層(ceng)(ceng)(ceng)瓦斯(si)含量更高、壓力更大地點使(shi)用效果甚(shen)微，而且防(fang)噴(pen)裝(zhuang)置安裝(zhuang)和(he)(he)使(shi)用復雜，影響(xiang)鉆(zhan)(zhan)進(jin)效率，也不(bu)能提高穿層(ceng)(ceng)(ceng)鉆(zhan)(zhan)孔(kong)(kong)的(de)穿煤(mei)長(chang)度和(he)(he)成孔(kong)(kong)率。

根據經驗采用(yong)間歇注(zhu)(zhu)漿法(fa)，即(ji)當(dang)長時(shi)間注(zhu)(zhu)漿壓(ya)力(li)上(shang)不(bu)來時(shi)，說明漿液順空(kong)隙泄流至塌(ta)空(kong)區(qu)，這時(shi)將漿液凝結(jie)時(shi)間調整至30-50秒(miao)，注(zhu)(zhu)漿1-5分鐘，停40秒(miao)，待原注(zhu)(zhu)入漿液初凝變稠后再注(zhu)(zhu)，如(ru)此反復，則原先的(de)泄漿通道逐漸變小(xiao)并終(zhong)堵塞(sai)，漿液即(ji)在(zai)管(guan)棚周圍達(da)到(dao)(dao)均勻擴散的(de)目的(de)。管(guan)棚超(chao)(chao)(chao)(chao)前(qian)(qian)(qian)(qian)支(zhi)(zhi)護(hu)(hu)技術(shu)發(fa)展趨勢在(zai)目前(qian)(qian)(qian)(qian)的(de)超(chao)(chao)(chao)(chao)前(qian)(qian)(qian)(qian)支(zhi)(zhi)護(hu)(hu)方(fang)法(fa)中,主要(yao)有(you)超(chao)(chao)(chao)(chao)前(qian)(qian)(qian)(qian)錨(mao)(mao)桿(gan)(gan)、超(chao)(chao)(chao)(chao)前(qian)(qian)(qian)(qian)小(xiao)導(dao)管(guan)注(zhu)(zhu)漿和超(chao)(chao)(chao)(chao)前(qian)(qian)(qian)(qian)管(guan)棚。超(chao)(chao)(chao)(chao)前(qian)(qian)(qian)(qian)錨(mao)(mao)桿(gan)(gan)和超(chao)(chao)(chao)(chao)前(qian)(qian)(qian)(qian)小(xiao)導(dao)管(guan)注(zhu)(zhu)漿具(ju)有(you)施工(gong)(gong)(gong)便捷(jie)、技術(shu)易掌(zhang)握、機械化配(pei)套程度要(yao)求(qiu)不(bu)高等優點,但支(zhi)(zhi)護(hu)(hu)長度小(xiao)(只3～5m),錨(mao)(mao)桿(gan)(gan)或小(xiao)導(dao)管(guan)伸入工(gong)(gong)(gong)作(zuo)面(mian)前(qian)(qian)(qian)(qian)端滑(hua)動線內距離短(duan),開(kai)挖循環進(jin)尺受限(xian)(xian)制(zhi),一(yi)般在(zai)淺埋松散地層中循環進(jin)尺多控制(zhi)在(zai)15～17m,循環次(ci)數增(zeng)加,工(gong)(gong)(gong)序交換頻繁,特(te)別是在(zai)自(zi)穩(wen)能力(li)極差的(de)圍巖(yan)(yan)中,錨(mao)(mao)桿(gan)(gan)和導(dao)管(guan)前(qian)(qian)(qian)(qian)端仍在(zai)滑(hua)移面(mian)內,起(qi)不(bu)到(dao)(dao)超(chao)(chao)(chao)(chao)前(qian)(qian)(qian)(qian)支(zhi)(zhi)撐保護(hu)(hu)的(de)作(zuo)用(yong),極易造成工(gong)(gong)(gong)作(zuo)面(mian)失穩(wen),存在(zai)較大(da)的(de)安全(quan)隱患。因此，長管(guan)棚的(de)應用(yong)越來越普遍(bian)。長管(guan)棚超(chao)(chao)(chao)(chao)前(qian)(qian)(qian)(qian)支(zhi)(zhi)護(hu)(hu)施工(gong)(gong)(gong)技術(shu)的(de)支(zhi)(zhi)護(hu)(hu)作(zuo)用(yong)機理在(zai)于,主要(yao)是鋼(gang)管(guan)與(yu)漿液固結(jie)體共同作(zuo)用(yong)的(de)結(jie)果,一(yi)方(fang)面(mian)進(jin)行鉆孔、下設鋼(gang)管(guan),當(dang)鋼(gang)管(guan)穿過松散軟弱圍巖(yan)(yan)、巖(yan)(yan)石(土(tu))等破(po)壞(huai)區(qu)后,伸入到(dao)(dao)原狀土(tu)部位(wei)時(shi),有(you)力(li)地保障了開(kai)挖掌(zhang)子面(mian)巖(yan)(yan)土(tu)體的(de)穩(wen)定,起(qi)到(dao)(dao)骨(gu)架、格柵(zha)作(zuo)用(yong)。息烽縣管(guan)棚廠家(jia)——貴州合(he)縱達(da)鋼(gang)結(jie)構(gou)有(you)限(xian)(xian)責(ze)任公(gong)司。

從豎(shu)直(zhi)變成(cheng)水平，就(jiu)是(shi)把要(yao)(yao)(yao)開挖的(de)(de)(de)隧道的(de)(de)(de)土體，加固(gu)完成(cheng)在開挖，相(xiang)當(dang)于把松散的(de)(de)(de)土體變成(cheng)較為(wei)穩固(gu)的(de)(de)(de)土體）▼深(shen)孔(kong)(kong)(kong)注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)原(yuan)理(li)▼深(shen)孔(kong)(kong)(kong)注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)立面(mian)(mian)圖▼深(shen)孔(kong)(kong)(kong)注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(2)注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)孔(kong)(kong)(kong)的(de)(de)(de)孔(kong)(kong)(kong)位(wei)、角度、深(shen)度的(de)(de)(de)偏差應(ying)(ying)(ying)符合相(xiang)關規(gui)范的(de)(de)(de)要(yao)(yao)(yao)求(qiu)(qiu)。▼深(shen)位(wei)，角度與深(shen)度(3)注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)段(duan)長度應(ying)(ying)(ying)綜(zong)合考慮地(di)層條(tiao)(tiao)件(jian)、地(di)下(xia)水狀態(tai)和鉆孔(kong)(kong)(kong)設備的(de)(de)(de)工(gong)作能力予以確(que)定(ding)(ding)，宜為(wei)10-15m，并應(ying)(ying)(ying)預留(liu)一定(ding)(ding)的(de)(de)(de)止(zhi)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)墻厚(hou)度。▼止(zhi)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)墻示意圖▼止(zhi)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)墻示意圖▼止(zhi)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)墻▼止(zhi)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)墻▼止(zhi)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)墻(4)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)液的(de)(de)(de)材料和類型(xing)應(ying)(ying)(ying)綜(zong)合考慮①土質條(tiao)(tiao)件(jian)、②注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)要(yao)(yao)(yao)求(qiu)(qiu)、③地(di)下(xia)水狀況、④周圍環境條(tiao)(tiao)件(jian)及⑤效(xiao)果要(yao)(yao)(yao)求(qiu)(qiu)等(deng)因素；且應(ying)(ying)(ying)經(jing)現場試驗確(que)定(ding)(ding)。可參考表1K413043進(jin)行選擇。(5)隧道內注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)孔(kong)(kong)(kong)應(ying)(ying)(ying)按(an)(an)(an)設計要(yao)(yao)(yao)求(qiu)(qiu)采取(qu)全斷面(mian)(mian)、半斷面(mian)(mian)等(deng)方(fang)式(shi)布(bu)設，并應(ying)(ying)(ying)滿足加固(gu)范圍的(de)(de)(de)要(yao)(yao)(yao)求(qiu)(qiu)；漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)液擴(kuo)散半徑應(ying)(ying)(ying)根(gen)據(ju)注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)材料、方(fang)法及地(di)層條(tiao)(tiao)件(jian)，經(jing)現場注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)試驗確(que)定(ding)(ding)。(6)根(gen)據(ju)地(di)層條(tiao)(tiao)件(jian)和加固(gu)要(yao)(yao)(yao)求(qiu)(qiu)，深(shen)孔(kong)(kong)(kong)注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)可采取(qu)前進(jin)式(shi)分(fen)段(duan)注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)、后退式(shi)分(fen)段(duan)注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)等(deng)方(fang)法。(7)鉆孔(kong)(kong)(kong)應(ying)(ying)(ying)按(an)(an)(an)先外圈(quan)、后內圈(quan)、跳孔(kong)(kong)(kong)施工(gong)的(de)(de)(de)順序進(jin)行。鉆孔(kong)(kong)(kong)時，應(ying)(ying)(ying)按(an)(an)(an)規(gui)范要(yao)(yao)(yao)求(qiu)(qiu)作好施工(gong)記錄，包括①孔(kong)(kong)(kong)號、進(jin)尺、時間、地(di)層、涌(yong)水位(wei)置、涌(yong)水量(liang)和涌(yong)水壓力（口訣(jue)：進(jin)孔(kong)(kong)(kong)時辰(chen)(chen)勇勇勇，說(shuo)男生進(jin)孔(kong)(kong)(kong)的(de)(de)(de)時辰(chen)(chen)非常(chang)勇猛(meng)）等(deng)內容，并應(ying)(ying)(ying)根(gen)據(ju)現場條(tiao)(tiao)件(jian)及時調整(zheng)施工(gong)工(gong)藝參數。▼鉆孔(kong)(kong)(kong)施工(gong)。各類跟(gen)管廠,跟(gen)管原(yuan)來可以這么(me)便(bian)宜。文山注(zhu)(zhu)(zhu)漿(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)管廠家直(zhi)銷

花溪區(qu)管棚(peng)廠(chang)家——貴州合縱(zong)達鋼結構有限責任公司。保山支護小導(dao)管

超(chao)前(qian)支護(hu)方法(fa)主(zhu)要(yao)包括：管(guan)(guan)(guan)(guan)(guan)棚(peng)(peng)法(fa)，機(ji)械預(yu)切糟(zao)法(fa)，預(yu)襯砌法(fa)，水(shui)平(ping)旋噴(pen)注漿(jiang)(jiang)法(fa)，超(chao)前(qian)小(xiao)(xiao)導(dao)管(guan)(guan)(guan)(guan)(guan)法(fa)，超(chao)前(qian)錨桿(gan)法(fa)、凍結(jie)法(fa)等等。其中(zhong)管(guan)(guan)(guan)(guan)(guan)棚(peng)(peng)法(fa)、水(shui)平(ping)旋噴(pen)注漿(jiang)(jiang)法(fa)、小(xiao)(xiao)導(dao)管(guan)(guan)(guan)(guan)(guan)法(fa)等支護(hu)方法(fa)同(tong)時也改良和加固(gu)了(le)地(di)(di)層(ceng)。管(guan)(guan)(guan)(guan)(guan)棚(peng)(peng)注漿(jiang)(jiang)支護(hu)：就是(shi)把一組(zu)鋼(gang)管(guan)(guan)(guan)(guan)(guan)沿開挖(wa)輪(lun)廓外(wai)己鉆好的(de)(de)(de)(de)孔中(zhong)打入地(di)(di)層(ceng)內，并與鋼(gang)拱架組(zu)合(he)形成(cheng)強(qiang)大的(de)(de)(de)(de)棚(peng)(peng)架預(yu)支護(hu)加固(gu)體系，支承(cheng)來自(zi)于管(guan)(guan)(guan)(guan)(guan)棚(peng)(peng)上部的(de)(de)(de)(de)荷載，通過鋼(gang)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)梅花形布置的(de)(de)(de)(de)注漿(jiang)(jiang)孔加壓向地(di)(di)層(ceng)中(zhong)注漿(jiang)(jiang)，以(yi)加固(gu)軟弱破碎的(de)(de)(de)(de)地(di)(di)層(ceng)，提高(gao)地(di)(di)層(ceng)的(de)(de)(de)(de)自(zi)穩能力(li)。管(guan)(guan)(guan)(guan)(guan)棚(peng)(peng)注漿(jiang)(jiang)是(shi)一種(zhong)長(chang)(chang)距(ju)離超(chao)前(qian)支護(hu)方法(fa)，超(chao)前(qian)距(ju)離長(chang)(chang)，剛(gang)度較(jiao)大，適用(yong)于掌(zhang)子面(mian)不(bu)能自(zi)穩、含水(shui)的(de)(de)(de)(de)地(di)(di)層(ceng)，控制(zhi)地(di)(di)表沉降(jiang)、防滲止(zhi)水(shui)的(de)(de)(de)(de)效果較(jiao)好，施工(gong)工(gong)藝要(yao)求較(jiao)高(gao)。如將(jiang)管(guan)(guan)(guan)(guan)(guan)棚(peng)(peng)注漿(jiang)(jiang)與小(xiao)(xiao)導(dao)管(guan)(guan)(guan)(guan)(guan)補(bu)充注漿(jiang)(jiang)法(fa)結(jie)合(he)，除具有(you)大管(guan)(guan)(guan)(guan)(guan)棚(peng)(peng)的(de)(de)(de)(de)特點外(wai)，能夠防止(zhi)管(guan)(guan)(guan)(guan)(guan)棚(peng)(peng)下(xia)方三角(jiao)土體的(de)(de)(de)(de)塌(ta)落(luo)，這種(zhong)長(chang)(chang)短結(jie)合(he)的(de)(de)(de)(de)預(yu)支護(hu)效果更(geng)為(wei)理想。管(guan)(guan)(guan)(guan)(guan)棚(peng)(peng)支護(hu)的(de)(de)(de)(de)主(zhu)要(yao)作用(yong)和優(you)點：（1）梁拱效應(ying)：先行施設的(de)(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)棚(peng)(peng)，以(yi)掌(zhang)子面(mian)和后(hou)方支撐為(wei)支點，形成(cheng)一個梁式結(jie)構，二者(zhe)構成(cheng)環繞(rao)隧洞輪(lun)廓的(de)(de)(de)(de)殼狀結(jie)構，可(ke)有(you)效圍巖(yan)松動和垮塌(ta)。保山支護(hu)小(xiao)(xiao)導(dao)管(guan)(guan)(guan)(guan)(guan)