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噴播施工

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客土(tu)(tu)(tu)噴(pen)(pen)播(又稱液力客土(tu)(tu)(tu)噴(pen)(pen)播噴(pen)(pen)播或基質(zhi)(zhi)噴(pen)(pen)播),是近十(shi)多年國內推廣的(de)快(kuai)速(su)植(zhi)物(wu)(wu)種(zhong)(zhong)子(zi)播種(zhong)(zhong)技術,主要用于公路(lu)、鐵路(lu)、江河堤壩的(de)生(sheng)物(wu)(wu)護坡工程(cheng)和(he)退化(hua)草(cao)原(yuan)修復種(zhong)(zhong)植(zhi)。其技術核心是利用專門的(de)混合噴(pen)(pen)射機械,將(jiang)種(zhong)(zhong)植(zhi)基質(zhi)(zhi)和(he)植(zhi)物(wu)(wu)種(zhong)(zhong)子(zi)攪(jiao)拌混合均勻,加水(shui)加壓,通(tong)過管(guan)路(lu)、噴(pen)(pen)槍,噴(pen)(pen)敷在土(tu)(tu)(tu)壤、土(tu)(tu)(tu)夾(jia)石(shi)或掛(gua)網處(chu)理的(de)巖(yan)石(shi)表面,形成(cheng)松軟而穩(wen)定的(de)植(zhi)生(sheng)覆蓋層,在適宜(yi)的(de)條件(jian)下草(cao)、灌種(zhong)(zhong)子(zi)便會很快(kuai)萌芽和(he)生(sheng)長,達到快(kuai)速(su)綠化(hua)、防止水(shui)土(tu)(tu)(tu)客土(tu)(tu)(tu)噴(pen)(pen)播流失的(de)功效(xiao)。

保(bao)水(shui)劑是客土噴播基質中的(de)重要保(bao)水(shui)材料,缺少它,基質噴播的(de)綠化效果(guo)就難以達到。一般用(yong)量為(wei)每立方米基質加入(ru)1.5kg保(bao)水(shui)劑。此外,每立方米噴播基質還需(xu)加入(ru)0.2kg的(de)粘(zhan)(zhan)合(he)劑(陰離子(zi)聚丙烯酰(xian)胺PAM A30),發(fa)揮粘(zhan)(zhan)結(jie)土粒、防止水(shui)土流失(shi)的(de)作用(yong),故又(you)稱其為(wei)粘(zhan)(zhan)合(he)劑、膠(jiao)粉。

掛網噴播

掛網(wang)(wang)客土(tu)噴(pen)播是采用高強度耐(nai)腐(fu)蝕的(de)土(tu)工網(wang)(wang)錨固,主鉚釘(ding)按(an)縱橫(heng)向間(jian)距5米(mi)控(kong)制,輔助(zhu)釘(ding)按(an)縱橫(heng)向間(jian)距1米(mi)控(kong)制,即(ji)每相鄰兩主鉚釘(ding)間(jian)有(you)4根輔助(zhu)釘(ding)。掛網(wang)(wang)施工之前,坡(po)面(mian)(mian)必需整平;如坡(po)面(mian)(mian)穩定性差,可(ke)適(shi)當加密(mi)主鉚釘(ding)。施工時,先在(zai)巖石坡(po)面(mian)(mian)上(shang)(shang)(shang)打鉚釘(ding)將高鍍鋅機編網(wang)(wang)固定,然后在(zai)網(wang)(wang)上(shang)(shang)(shang)先后噴(pen)上(shang)(shang)(shang)相應厚度的(de)種(zhong)(zhong)植基(ji)(ji)質。噴(pen)植厚度根據(ju)地質、巖石土(tu)壤情況確定。強風化(hua)坡(po)面(mian)(mian)基(ji)(ji)質厚7cm,弱~微風化(hua)坡(po)面(mian)(mian)基(ji)(ji)質厚10cm。噴(pen)播時分兩層(ceng)噴(pen)射,在(zai)上(shang)(shang)(shang)層(ceng)基(ji)(ji)質加入種(zhong)(zhong)子,厚度為2cm。

三維網噴播客土噴播

201189932184870671.jpg三(san)維土(tu)(tu)工(gong)網(wang)(wang)(wang)墊是(shi)由(you)二(er)層以上(shang)塑料(liao)凹凸網(wang)(wang)(wang)與二(er)層以上(shang)高強度平(ping)網(wang)(wang)(wang)復合(he)而成的網(wang)(wang)(wang)狀結構,適用(yong)于水土(tu)(tu)保持坡面防護植(zhi)草(cao)用(yong)。通常要(yao)求(qiu)規格(ge)為:單位(wei)面積質量≥250g/m2,鼓包厚度≥10mm,寬(kuan)度≥2.0m,拉伸負(fu)荷≥1.2kn/m。土(tu)(tu)工(gong)網(wang)(wang)(wang)播草(cao)籽施工(gong)方(fang)案(an):先整平(ping)邊(bian)坡,在坡頂及坡角處分別開挖寬(kuan)20cm、深30cm的溝槽,將土(tu)(tu)工(gong)網(wang)(wang)(wang)鋪設于溝內,用(yong)方(fang)木樁固(gu)定并填(tian)土(tu)(tu)夯實,再從坡頂自(zi)上(shang)而下(xia)鋪設土(tu)(tu)工(gong)網(wang)(wang)(wang),其縱橫向搭接長度20cm,搭接部位(wei)每間隔(ge)100cm用(yong)U型(xing)鋼釘固(gu)定,待(dai)土(tu)(tu)工(gong)網(wang)(wang)(wang)鋪設完畢再播草(cao)籽。

無論哪種(zhong)噴(pen)播(bo)方式,播(bo)種(zhong)后應及時加蓋無紡布,并用U型釘固定。以(yi)后,噴(pen)水養護,保持基質層濕潤,直至土面成坪,揭除無紡布,進入維護管(guan)養階段。


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