A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Strong permeable stratum anti-seepage method for pump station construction
The invention discloses a strong permeable stratum anti-seepage method for pump station construction. The method includes the steps that S1, a contour line of a foundation pit and a to-be-grouted area of the foundation pit are determined, and a horizontal grouting hole of the to-be-grouted area is determined, and the grouting hole is located below the elevation of a pump station to be excavated and horizontally penetrates through the bottom of the foundation pit; S2, a drill rod is adopted as a grouting pipe, in the drilling process, the concentration of cement paste is gradually increased, and the grouting pressure of the cement paste is gradually increased until a horizontal sealing bottom is formed at the bottom of the foundation pit; S3, after horizontal bottom sealing is completed, a rectangular vertical curtain is formed on the periphery of the foundation pit through a jet grouting pile construction method; and S4, gaps between the vertical curtain and the horizontal sealing bottom are connected in a pressure grouting mode, and grout for pressure grouting is formed by mixing water, cement, fly ash and bentonite. The provided strong permeable stratum anti-seepage method for pump station construction achieves the purposes of low drainage cost, good anti-seepage effect and good foundation reinforcement.
本发明公开了一种用于泵站施工的强透水地层防渗漏方法，其包括如下步骤：S1、确定基坑的轮廓线和基坑的待注浆区域，且确定待注浆区域的水平注浆孔，注浆孔位于拟开挖泵站的高程以下，并水平穿过基坑的底部；S2、采用钻杆作为注浆管，在钻进过程中，水泥浆浓度逐渐加大，水泥浆注浆压力逐渐升高，直至在基坑的底部形成水平封底；S3、在水平封底完成后，通过旋喷桩施工方法，在基坑的四周形成矩形的竖直帷幕；S4、将竖直帷幕与水平封底之间的缝隙采用压力注浆的方式连接，其中，压力注浆的浆液由水、水泥、粉煤灰和膨润土混合而成。本发明提供了一种用于泵站施工的强透水地层防渗漏方法，以达到排水费用低、防渗效果好和地基加固好的目的。
Strong permeable stratum anti-seepage method for pump station construction
The invention discloses a strong permeable stratum anti-seepage method for pump station construction. The method includes the steps that S1, a contour line of a foundation pit and a to-be-grouted area of the foundation pit are determined, and a horizontal grouting hole of the to-be-grouted area is determined, and the grouting hole is located below the elevation of a pump station to be excavated and horizontally penetrates through the bottom of the foundation pit; S2, a drill rod is adopted as a grouting pipe, in the drilling process, the concentration of cement paste is gradually increased, and the grouting pressure of the cement paste is gradually increased until a horizontal sealing bottom is formed at the bottom of the foundation pit; S3, after horizontal bottom sealing is completed, a rectangular vertical curtain is formed on the periphery of the foundation pit through a jet grouting pile construction method; and S4, gaps between the vertical curtain and the horizontal sealing bottom are connected in a pressure grouting mode, and grout for pressure grouting is formed by mixing water, cement, fly ash and bentonite. The provided strong permeable stratum anti-seepage method for pump station construction achieves the purposes of low drainage cost, good anti-seepage effect and good foundation reinforcement.
本发明公开了一种用于泵站施工的强透水地层防渗漏方法，其包括如下步骤：S1、确定基坑的轮廓线和基坑的待注浆区域，且确定待注浆区域的水平注浆孔，注浆孔位于拟开挖泵站的高程以下，并水平穿过基坑的底部；S2、采用钻杆作为注浆管，在钻进过程中，水泥浆浓度逐渐加大，水泥浆注浆压力逐渐升高，直至在基坑的底部形成水平封底；S3、在水平封底完成后，通过旋喷桩施工方法，在基坑的四周形成矩形的竖直帷幕；S4、将竖直帷幕与水平封底之间的缝隙采用压力注浆的方式连接，其中，压力注浆的浆液由水、水泥、粉煤灰和膨润土混合而成。本发明提供了一种用于泵站施工的强透水地层防渗漏方法，以达到排水费用低、防渗效果好和地基加固好的目的。
Strong permeable stratum anti-seepage method for pump station construction
一种用于泵站施工的强透水地层防渗漏方法
LUO JINCHEN (author) / LI PEINAN (author) / ZHENG XIANGHUA (author) / ZHENG YANQIONG (author) / LIN QIBIN (author) / ZHENG GUOXIAN (author)
2021-05-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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