A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Grouting reinforcement method suitable for sandy soil stratum
The invention relates to a grouting reinforcement method suitable for a sandy soil stratum. The grouting reinforcement method comprises the following construction steps of hole site fixing, drilling machine hole forming, slurry stirring, small-pressure grouting (splitting and percolation), large-pressure grouting, grouting pipe lifting and pulling and grouting to the designed depth. The grout injected in the small-pressure grouting process is used for splitting and percolating a sandy soil stratum within a certain range around a grout outlet hole of the drill rod; after the grout in the small-pressure grouting body is solidified, a percolation body is formed and the splitting channel is blocked, the drill rod retreats to the section, high-pressure grouting is carried out, the injected grout further permeates and fills the sandy soil in the small-pressure grouting body, a dense grouting sandy soil condensation body is formed, and the multiple continuous sandy soil condensation bodies form the reinforced water stop pile body. Most grout injected twice is reserved in a small influence radius, materials are saved, and a formed pile body is more compact, higher in strength and compactness and better in water stopping performance.
本申请涉及一种适用于砂土地层的注浆加固方法，其包括以下施工步骤：步骤孔位定点—钻机成孔—浆液搅拌—小压力注浆（劈裂+渗滤）—大压力注浆—提拔注浆管—注浆至设计深。小压力注浆过程中注入的浆液对钻杆出浆孔周围一定范围内的砂土地层进行劈裂和渗滤；待小压力注浆体内的浆液凝固，形成渗滤体并将劈裂通道封堵后，钻杆退至该段，进行高压力注浆，注入的浆液对小压力注浆体内的砂土进行进一步渗透填充，形成密实的注浆砂土凝结体，多个连续的砂土凝结体形成了加固止水桩体。本申请使得两次注入的浆液都大部分留存在了小的影响半径内，不仅节约了材料，也使得形成的桩体更加密实，强度和密实度更高，止水性能也更好。
Grouting reinforcement method suitable for sandy soil stratum
The invention relates to a grouting reinforcement method suitable for a sandy soil stratum. The grouting reinforcement method comprises the following construction steps of hole site fixing, drilling machine hole forming, slurry stirring, small-pressure grouting (splitting and percolation), large-pressure grouting, grouting pipe lifting and pulling and grouting to the designed depth. The grout injected in the small-pressure grouting process is used for splitting and percolating a sandy soil stratum within a certain range around a grout outlet hole of the drill rod; after the grout in the small-pressure grouting body is solidified, a percolation body is formed and the splitting channel is blocked, the drill rod retreats to the section, high-pressure grouting is carried out, the injected grout further permeates and fills the sandy soil in the small-pressure grouting body, a dense grouting sandy soil condensation body is formed, and the multiple continuous sandy soil condensation bodies form the reinforced water stop pile body. Most grout injected twice is reserved in a small influence radius, materials are saved, and a formed pile body is more compact, higher in strength and compactness and better in water stopping performance.
本申请涉及一种适用于砂土地层的注浆加固方法，其包括以下施工步骤：步骤孔位定点—钻机成孔—浆液搅拌—小压力注浆（劈裂+渗滤）—大压力注浆—提拔注浆管—注浆至设计深。小压力注浆过程中注入的浆液对钻杆出浆孔周围一定范围内的砂土地层进行劈裂和渗滤；待小压力注浆体内的浆液凝固，形成渗滤体并将劈裂通道封堵后，钻杆退至该段，进行高压力注浆，注入的浆液对小压力注浆体内的砂土进行进一步渗透填充，形成密实的注浆砂土凝结体，多个连续的砂土凝结体形成了加固止水桩体。本申请使得两次注入的浆液都大部分留存在了小的影响半径内，不仅节约了材料，也使得形成的桩体更加密实，强度和密实度更高，止水性能也更好。
Grouting reinforcement method suitable for sandy soil stratum
一种适用于砂土地层的注浆加固方法
CUI XUEDONG (author) / WU JIGUANG (author) / CUI TENGYUE (author)
2022-07-15
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Synchronous grouting slurry suitable for sandy water-rich stratum
| European Patent Office | 2021
| European Patent Office | 2015
Retrusive localized grouting method and structure suitable for sandy gravel stratum
| European Patent Office | 2024