錨(mao)桿錨(mao)索邊(bian)(bian)坡(po)防護施(shi)工技(ji)術(shu)要害(hai)科技(ji)大幅度帶動公路(lu)建設(she)技(ji)術(shu)水(shui)平的(de)提升,錨(mao)桿錨(mao)索施(shi)工技(ji)術(shu)以(yi)其(qi)本(ben)身(shen)的(de)優勢,在(zai)公路(lu)高邊(bian)(bian)坡(po)支護中被廣泛應用。今日巖(yan)聯(lian)小編要分(fen)享的(de)是錨(mao)桿錨(mao)索邊(bian)(bian)坡(po)防護施(shi)工技(ji)術(shu)要害(hai)。
錨(mao)桿錨(mao)索(suo)邊坡防護(hu)施工技(ji)術要(yao)害錨(mao)索(suo)結構防護(hu)技(ji)術放樣布孔,根(gen)據邊坡開挖面(mian)的立面(mian)圖,按(an)4 m×3.5 m的距離將錨(mao)孔安置(zhi)在(zai)坡面(mian)上(shang),選用Φ50鋼管腳(jiao)手架搭設施工作業途徑(jing),途徑(jing)用錨(mao)桿固定于(yu)坡面(mian),用卷(juan)揚機(ji)(ji)將鉆機(ji)(ji)提升到途徑(jing)上(shang)設備就位(wei)。
確(que)(que)保鉆(zhan)(zhan)(zhan)(zhan)(zhan)頭與(yu)邊(bian)坡片面交角為53或(huo)63(根據斜度決定),鉆(zhan)(zhan)(zhan)(zhan)(zhan)機就位后自(zi)上而(er)下(xia)進行(xing)鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)作業,鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)運用(yong)液壓潛孔(kong)鉆(zhan)(zhan)(zhan)(zhan)(zhan)機施鉆(zhan)(zhan)(zhan)(zhan)(zhan),選用(yong)無(wu)水鉆(zhan)(zhan)(zhan)(zhan)(zhan)進的(de)干(gan)法作業,以確(que)(que)保邊(bian)坡地質條件不被惡化,確(que)(que)保孔(kong)壁的(de)穩定性。
鉆(zhan)孔(kong)(kong)結束后用(yong)高(gao)壓風(feng)進行(xing)清(qing)孔(kong)(kong),孔(kong)(kong)壁不得有(you)粘土或粉砂(sha)。石屑和巖粉通(tong)過很多(duo)高(gao)壓空氣從孔(kong)(kong)口(kou)吹出,孔(kong)(kong)口(kou)處(chu)粉塵(chen)過大,簡(jian)單(dan)防礙(ai)操作工人的視野,影(ying)響操作,因而必須采取噴灑水霧的辦(ban)法對孔(kong)(kong)口(kou)進行(xing)除塵(chen),使巖粉與水霧一起沉積(ji)于地面。