A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method of cofferdam double-row high-pressure jet grouting pile wall
The invention belongs to the field of dam foundation anti-permeability engineering, and particularly relates to a construction method of a cofferdam double-row high-pressure jet grouting pile wall. The construction method comprises the steps of jet grouting pile position measurement, drilling, pore-forming protection, high-pressure jet grouting, filling and recharging, site-clearing ending and the like. The double-row high-pressure jet grouting pile wall has continuity through the double-row staggered lap joint arrangement, and the anti-seepage capacity of the high-pressure jet grouting pile wall is improved; high-pressure jet grouting piles are shotcreted in a sequence-dividing and row-dividing mode, the one-time shotcreted standard reaching rate is increased, therefore, the working procedures of detection and reworking are greatly reduced, the construction period is shortened on the whole, and the cost is saved; when the method is adopted for sprinkling irrigation, on-site grouting construction waste liquid is little, pollution is small, and the total cost-effectiveness ratio is high; and through the double-row high-pressure jet grouting pile wall, the technical problem that a cofferdam which is good in continuity and high in the anti-permeability requirement is difficult to construct in a geological layer with high lonestone and boulder content.
本发明属于大坝基础抗渗工程领域，具体涉及一种围堰双排高压旋喷桩墙的施工方法，包括旋喷桩桩位测定、钻孔、成孔保护、高压喷射灌浆、充填回灌和清场结束等步骤。通过双排交错式搭接布置使双排高压旋喷桩墙具有连续性，提高了高压旋喷桩墙的抗渗能力；采用分序分排方式喷筑高压旋喷桩提高了一次喷筑达标率，从而极大减省了检测、返工的工序，整体上缩短工期，节约成本；采用本方法喷灌，现场灌浆施工废液少、污染小，总体效费比高。双排高压旋喷桩墙解决了在孤石、漂石含量较多的地质层中构筑连续性好、抗渗要求高的围堰的技术难题。
Construction method of cofferdam double-row high-pressure jet grouting pile wall
The invention belongs to the field of dam foundation anti-permeability engineering, and particularly relates to a construction method of a cofferdam double-row high-pressure jet grouting pile wall. The construction method comprises the steps of jet grouting pile position measurement, drilling, pore-forming protection, high-pressure jet grouting, filling and recharging, site-clearing ending and the like. The double-row high-pressure jet grouting pile wall has continuity through the double-row staggered lap joint arrangement, and the anti-seepage capacity of the high-pressure jet grouting pile wall is improved; high-pressure jet grouting piles are shotcreted in a sequence-dividing and row-dividing mode, the one-time shotcreted standard reaching rate is increased, therefore, the working procedures of detection and reworking are greatly reduced, the construction period is shortened on the whole, and the cost is saved; when the method is adopted for sprinkling irrigation, on-site grouting construction waste liquid is little, pollution is small, and the total cost-effectiveness ratio is high; and through the double-row high-pressure jet grouting pile wall, the technical problem that a cofferdam which is good in continuity and high in the anti-permeability requirement is difficult to construct in a geological layer with high lonestone and boulder content.
本发明属于大坝基础抗渗工程领域，具体涉及一种围堰双排高压旋喷桩墙的施工方法，包括旋喷桩桩位测定、钻孔、成孔保护、高压喷射灌浆、充填回灌和清场结束等步骤。通过双排交错式搭接布置使双排高压旋喷桩墙具有连续性，提高了高压旋喷桩墙的抗渗能力；采用分序分排方式喷筑高压旋喷桩提高了一次喷筑达标率，从而极大减省了检测、返工的工序，整体上缩短工期，节约成本；采用本方法喷灌，现场灌浆施工废液少、污染小，总体效费比高。双排高压旋喷桩墙解决了在孤石、漂石含量较多的地质层中构筑连续性好、抗渗要求高的围堰的技术难题。
Construction method of cofferdam double-row high-pressure jet grouting pile wall
围堰双排高压旋喷桩墙的施工方法
WANG PENGHUI (author) / LI LIN (author) / LIU JINLONG (author) / LIU XIAOLONG (author) / TIAN ZHENDONG (author) / FENG QIANGQIANG (author) / QIN HAI (author)
2021-06-08
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Larsen steel sheet pile and high-pressure jet grouting pile combined cofferdam construction method
| European Patent Office | 2021
High-pressure rotary jet grouting bottom sealing steel sheet pile cofferdam construction method
| European Patent Office | 2023
| European Patent Office | 2021
Floating type double-wall steel cofferdam and high pile cap construction method
| European Patent Office | 2024
| European Patent Office | 2021