A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Retrusive localized grouting method and structure suitable for sandy gravel stratum
The invention discloses a retreating type localized grouting method and structure suitable for a sandy gravel stratum. The grouting method comprises the following steps that the position of a curtain grouting drill hole in a grouting stop wall is determined, a first drill bit is adopted for opening the hole in the position, an orifice pipe is arranged in the hole, the pipe is sealed through a hole sealing material, and a flange plate is installed at the orifice; after the second drill bit and the steel pipe cooperatively reach the designed depth, the second drill bit is pulled out; a slurry outlet pipe is put into the steel pipe, and the steel pipe is pulled out after the bottom of the slurry outlet pipe reaches the designed depth; a pipe sealing material is injected into the grout outlet pipe, after the pipe sealing material is solidified, the pipe sealing material in the grout outlet pipe is removed, and the pipe sealing material is located between the grout outlet pipe and the sandy gravel stratum; a grouting pipe is put into the grout outlet pipe, and retreating type localized grouting is carried out; the filling effect on the sandy gravel stratum can be achieved, the permeability of the sandy gravel stratum is improved, a hydraulic connection channel in front of tunnel excavation is closed, and the purposes of water plugging and stratum reinforcing are achieved.
本发明公开了一种适用于砂卵石地层的后退式定域注浆方法及结构，所述注浆方法包括以下步骤：确定止浆墙上帷幕注浆钻孔的位置，采用第一钻头在该位置进行开孔，孔内下孔口管，用封孔料进行封管，孔口安装法兰盘；第二钻头外套设钢管，第二钻头跟钢管协同达到设计深度后，拔出第二钻头；在钢管内下入出浆管，待出浆管底部到达设计深度后拔出钢管；在出浆管内注入封管料，待封管料凝固后，清除出浆管内的封管料，封管料处于出浆管和砂卵石地层之间；在出浆管内下入注浆管，进行后退式定域注浆；本发明可以实现对砂卵石地层的填充效果，改善砂卵石地层的渗透性，封闭隧道开挖前方的水力联系通道，起到堵水和加固地层的目的。
Retrusive localized grouting method and structure suitable for sandy gravel stratum
The invention discloses a retreating type localized grouting method and structure suitable for a sandy gravel stratum. The grouting method comprises the following steps that the position of a curtain grouting drill hole in a grouting stop wall is determined, a first drill bit is adopted for opening the hole in the position, an orifice pipe is arranged in the hole, the pipe is sealed through a hole sealing material, and a flange plate is installed at the orifice; after the second drill bit and the steel pipe cooperatively reach the designed depth, the second drill bit is pulled out; a slurry outlet pipe is put into the steel pipe, and the steel pipe is pulled out after the bottom of the slurry outlet pipe reaches the designed depth; a pipe sealing material is injected into the grout outlet pipe, after the pipe sealing material is solidified, the pipe sealing material in the grout outlet pipe is removed, and the pipe sealing material is located between the grout outlet pipe and the sandy gravel stratum; a grouting pipe is put into the grout outlet pipe, and retreating type localized grouting is carried out; the filling effect on the sandy gravel stratum can be achieved, the permeability of the sandy gravel stratum is improved, a hydraulic connection channel in front of tunnel excavation is closed, and the purposes of water plugging and stratum reinforcing are achieved.
本发明公开了一种适用于砂卵石地层的后退式定域注浆方法及结构，所述注浆方法包括以下步骤：确定止浆墙上帷幕注浆钻孔的位置，采用第一钻头在该位置进行开孔，孔内下孔口管，用封孔料进行封管，孔口安装法兰盘；第二钻头外套设钢管，第二钻头跟钢管协同达到设计深度后，拔出第二钻头；在钢管内下入出浆管，待出浆管底部到达设计深度后拔出钢管；在出浆管内注入封管料，待封管料凝固后，清除出浆管内的封管料，封管料处于出浆管和砂卵石地层之间；在出浆管内下入注浆管，进行后退式定域注浆；本发明可以实现对砂卵石地层的填充效果，改善砂卵石地层的渗透性，封闭隧道开挖前方的水力联系通道，起到堵水和加固地层的目的。
Retrusive localized grouting method and structure suitable for sandy gravel stratum
一种适用于砂卵石地层的后退式定域注浆方法及结构
XU ZHENHAO (author) / LIU YANG (author) / BU ZEHUA (author) / PAN DONGDONG (author) / LI ZHEN (author) / GE SHUAIFEI (author) / WANG ZHIYANG (author)
2024-03-19
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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