糙面土工膜在壩體斜墻中的設計原則以及要點
瀏覽次數：次信息來源：泰安佳(jia)路通工程材料有限公司發布時間：2023/8/21
土工材料市場逐漸豐富壯大起來，糙面土工膜更是被廣泛應用于各大工程建設工程，成為不少客戶朋友信賴關注的重點產品，糙面土工膜更是被廣泛應用于各大工程建設，關于糙面土工膜在壩體斜墻中的設計原則以及要點，小編為您進行了概況總結。 在糙(cao)(cao)面土(tu)(tu)工膜防滲(shen)斜墻設(she)(she)計中，應(ying)(ying)(ying)注重糙(cao)(cao)面土(tu)(tu)工膜鋪設(she)(she)方(fang)(fang)向(xiang)(xiang)(xiang)的(de)確定(ding)，應(ying)(ying)(ying)根據**短(duan)接(jie)(jie)縫(feng)原(yuan)(yuan)則(ze)，大(da)拉(la)(la)力方(fang)(fang)向(xiang)(xiang)(xiang)的(de)少接(jie)(jie)縫(feng)原(yuan)(yuan)則(ze)進(jin)行(xing)設(she)(she)計。所稱**短(duan)接(jie)(jie)縫(feng)原(yuan)(yuan)則(ze)，是指沿壩(ba)軸方(fang)(fang)向(xiang)(xiang)(xiang)，如較(jiao)(jiao)長、較(jiao)(jiao)矮(ai)的(de)堤(di)壩(ba)，沿壩(ba)體(ti)軸向(xiang)(xiang)(xiang)，進(jin)行(xing)低壩(ba)糙(cao)(cao)面土(tu)(tu)工膜展(zhan)鋪，由(you)此可采用較(jiao)(jiao)長的(de)糙(cao)(cao)面土(tu)(tu)工膜卷材進(jin)行(xing)展(zhan)鋪施工，高(gao)壩(ba)則(ze)應(ying)(ying)(ying)從(cong)壩(ba)頂至壩(ba)底(di)，進(jin)行(xing)糙(cao)(cao)面土(tu)(tu)工膜展(zhan)鋪，以(yi)保(bao)證接(jie)(jie)縫(feng)**小(xiao)(xiao)；要求保(bao)證接(jie)(jie)縫(feng)抗(kang)拉(la)(la)強(qiang)度能達到母材的(de)80%，因此接(jie)(jie)縫(feng)應(ying)(ying)(ying)盡量避免設(she)(she)在壩(ba)體(ti)拉(la)(la)伸方(fang)(fang)向(xiang)(xiang)(xiang)，以(yi)保(bao)證拉(la)(la)伸方(fang)(fang)向(xiang)(xiang)(xiang)與糙(cao)(cao)面土(tu)(tu)工膜縱向(xiang)(xiang)(xiang)平行(xing)。對于高(gao)土(tu)(tu)石壩(ba)，由(you)于壩(ba)坡方(fang)(fang)向(xiang)(xiang)(xiang)受力較(jiao)(jiao)大(da)，應(ying)(ying)(ying)沿上(shang)下方(fang)(fang)向(xiang)(xiang)(xiang)展(zhan)開糙(cao)(cao)面土(tu)(tu)工膜。對具有良好地質(zhi)條件(jian)的(de)防洪堤(di)或(huo)低壩(ba)，應(ying)(ying)(ying)進(jin)行(xing)針對性計算，如順坡接(jie)(jie)力較(jiao)(jiao)小(xiao)(xiao)時，應(ying)(ying)(ying)遵循**短(duan)接(jie)(jie)縫(feng)原(yuan)(yuan)則(ze)，這樣可避免在拉(la)(la)力大(da)的(de)方(fang)(fang)向(xiang)(xiang)(xiang)上(shang)設(she)(she)置接(jie)(jie)縫(feng)。 近(jin)幾(ji)年來(lai)，糙(cao)(cao)面土(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)廣泛應(ying)用于(yu)土(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)防(fang)滲(shen)斜墻，具有(you)平(ping)面排水(shui)性(xing)(xing)能(neng)好(hao)，防(fang)滲(shen)性(xing)(xing)能(neng)好(hao)的(de)(de)(de)特點，但(dan)由于(yu)PE復(fu)合土(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)較(jiao)薄(bo)，為了避免接(jie)(jie)(jie)縫漏水(shui)或(huo)漏水(shui)，必須進行針對(dui)性(xing)(xing)的(de)(de)(de)設(she)計。就低壩(ba)(ba)而(er)(er)言，PE復(fu)合土(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)施(shi)工(gong)(gong)(gong)(gong)(gong)一般(ban)采(cai)用水(shui)平(ping)鋪(pu)蓋，需(xu)(xu)(xu)(xu)要(yao)(yao)有(you)針對(dui)性(xing)(xing)地開(kai)挖趾(zhi)(zhi)板(ban)(ban)(ban)槽，對(dui)于(yu)兩岸有(you)較(jiao)厚粘(zhan)性(xing)(xing)土(tu)(tu)(tu)(tu)的(de)(de)(de)地區，則(ze)需(xu)(xu)(xu)(xu)要(yao)(yao)進行土(tu)(tu)(tu)(tu)槽開(kai)挖，通常(chang)將深度(du)、寬度(du)分別控制(zhi)在(zai)1.5m和(he)(he)2.0m，從而(er)(er)在(zai)回填(tian)的(de)(de)(de)粘(zhan)性(xing)(xing)土(tu)(tu)(tu)(tu)中(zhong)(zhong)設(she)置光膜(mo)(mo)(mo)彎頭，保證糙(cao)(cao)面土(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)與粘(zhan)土(tu)(tu)(tu)(tu)緊密(mi)結合，需(xu)(xu)(xu)(xu)層(ceng)層(ceng)夯實。鋪(pu)墊(dian)布置時(shi)，豎向(xiang)(xiang)橫向(xiang)(xiang)接(jie)(jie)(jie)縫應(ying)錯開(kai)成(cheng)(cheng)T字(zi)縫，且無十字(zi)縫；對(dui)于(yu)壩(ba)(ba)基覆蓋層(ceng)較(jiao)薄(bo)的(de)(de)(de)低壩(ba)(ba)，首先挖取兩岸趾(zhi)(zhi)板(ban)(ban)(ban)槽，然(ran)(ran)后(hou)挖取趾(zhi)(zhi)板(ban)(ban)(ban)底至(zhi)基巖。例如(ru)土(tu)(tu)(tu)(tu)石壩(ba)(ba)上游坡面鋪(pu)糙(cao)(cao)面土(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)時(shi)，需(xu)(xu)(xu)(xu)用混凝(ning)(ning)土(tu)(tu)(tu)(tu)趾(zhi)(zhi)板(ban)(ban)(ban)澆(jiao)筑(zhu)底面，而(er)(er)趾(zhi)(zhi)板(ban)(ban)(ban)槽開(kai)挖入巖基時(shi)，需(xu)(xu)(xu)(xu)沿(yan)(yan)壩(ba)(ba)坡底輪廓線進行澆(jiao)筑(zhu)，然(ran)(ran)后(hou)澆(jiao)注(zhu)混凝(ning)(ning)土(tu)(tu)(tu)(tu)。糙(cao)(cao)面土(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)需(xu)(xu)(xu)(xu)沿(yan)(yan)趾(zhi)(zhi)板(ban)(ban)(ban)線沿(yan)(yan)趾(zhi)(zhi)板(ban)(ban)(ban)線埋(mai)沒，具體(ti)埋(mai)設(she)方(fang)式需(xu)(xu)(xu)(xu)從河床趾(zhi)(zhi)板(ban)(ban)(ban)到岸坡趾(zhi)(zhi)板(ban)(ban)(ban)延伸，并在(zai)趾(zhi)(zhi)板(ban)(ban)(ban)混凝(ning)(ning)土(tu)(tu)(tu)(tu)中(zhong)(zhong)澆(jiao)筑(zhu)留邊的(de)(de)(de)光膜(mo)(mo)(mo)，一般(ban)光膜(mo)(mo)(mo)寬度(du)應(ying)控制(zhi)在(zai)210mm左(zuo)右(you)，這樣可(ke)以(yi)曲折地澆(jiao)筑(zhu)；壩(ba)(ba)坡趾(zhi)(zhi)板(ban)(ban)(ban)鋪(pu)設(she)時(shi)，需(xu)(xu)(xu)(xu)注(zhu)意錨固(gu)槽或(huo)趾(zhi)(zhi)板(ban)(ban)(ban)的(de)(de)(de)開(kai)挖完成(cheng)(cheng)情況，這樣沿(yan)(yan)趾(zhi)(zhi)板(ban)(ban)(ban)或(huo)錨固(gu)槽縱向(xiang)(xiang)澆(jiao)筑(zhu)糙(cao)(cao)面土(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)時(shi)，需(xu)(xu)(xu)(xu)要(yao)(yao)根據錨固(gu)槽或(huo)混凝(ning)(ning)土(tu)(tu)(tu)(tu)內的(de)(de)(de)錨固(gu)槽完成(cheng)(cheng)澆(jiao)埋(mai)施(shi)工(gong)(gong)(gong)(gong)(gong)。對(dui)壩(ba)(ba)心糙(cao)(cao)面土(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)進行拼接(jie)(jie)(jie)時(shi)，需(xu)(xu)(xu)(xu)露出半(ban)邊，并隨之檢查(cha)壩(ba)(ba)面是(shi)否有(you)大塊尖棱石，密(mi)實度(du)和(he)(he)平(ping)整度(du)是(shi)否符合要(yao)(yao)求，通過檢查(cha)后(hou)方(fang)可(ke)進行糙(cao)(cao)面土(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)的(de)(de)(de)鋪(pu)裝，基于(yu)實際情況的(de)(de)(de)糙(cao)(cao)面土(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)裁減也不可(ke)忽視，以(yi)更好(hao)地滿足粘(zhan)接(jie)(jie)(jie)和(he)(he)焊接(jie)(jie)(jie)需(xu)(xu)(xu)(xu)要(yao)(yao)，同(tong)時(shi)應(ying)注(zhu)意溫度(du)收(shou)縮和(he)(he)壩(ba)(ba)體(ti)變(bian)形帶來(lai)的(de)(de)(de)影響。敷設(she)完畢、接(jie)(jie)(jie)合好(hao)后(hou)，護坡應(ying)在(zai)48h內完成(cheng)(cheng)，必要(yao)(yao)時(shi)可(ke)采(cai)用遮蓋的(de)(de)(de)方(fang)式保護施(shi)工(gong)(gong)(gong)(gong)(gong)質量，作業人員和(he)(he)檢驗(yan)人員必須穿軟底鞋，不準吸煙。 以(yi)上是(shi)專注糙面(mian)土(tu)(tu)工(gong)膜壩體斜墻(qiang)中的(de)設計原則以(yi)及(ji)要點，希(xi)望(wang)能(neng)夠幫(bang)助(zhu)(zhu)客戶朋友(you)更(geng)(geng)好(hao)(hao)的(de)了解糙面(mian)土(tu)(tu)工(gong)膜，提升糙面(mian)土(tu)(tu)工(gong)膜產品的(de)利用，希(xi)望(wang)能(neng)夠幫(bang)助(zhu)(zhu)客戶朋友(you)更(geng)(geng)好(hao)(hao)的(de)了解糙面(mian)土(tu)(tu)工(gong)膜，保障更(geng)(geng)多工(gong)程建設需求提供(gong)支(zhi)持幫(bang)助(zhu)(zhu)。
