A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Existing roadbed steel floral tube grouting method
The invention provides an existing roadbed steel floral tube grouting method. The existing roadbed steel floral tube grouting method comprises the following steps that a first drill bit is adopted to drill a hole in a position to be grouted, and the first drill bit is taken out after the hole is drilled to the hole sealing depth; a steel floral tube is adopted to continue drilling to the designed depth on the basis of hole sealing, a second drill bit is arranged at the end of the steel floral tube located on the inner side, the outer diameter of the first drill bit is larger than that of the second drill bit, and the outer diameter of the second drill bit is larger than that of the steel floral tube; a space enclosed by the inner wall of the sealing hole and the outer wall of the steel floral tube is filled; grouting is conducted in the steel floral tube, and grout permeates into a roadbed through the grouting holes in the steel floral tube. According to the method, a gap is formed between the steel floral tube and a hole wall, soil on the hole wall cannot block the grouting hole in the steel floral tube, the grouting amount per minute is greatly increased, the resistance generated when the steel floral tube is tamped in is reduced, in addition, the grout leakage phenomenon can be avoided by the sealing hole.
本发明提供一种既有路基钢花管注浆方法，包括以下步骤：采用第一钻头向待注浆位置钻孔，且钻至封孔深度后将第一钻头取出；采用钢花管在封孔的基础上继续钻孔至设计深度，位于里侧的钢花管的端部具有第二钻头，且第一钻头的外径大于第二钻头的外径，第二钻头的外径大于钢花管的外径；填塞封孔内壁与钢花管外壁围合空间；向钢花管内注浆，浆液由钢花管上的注浆孔向路基渗透。本发明中，钢花管与孔壁之间具有间隙，孔壁处的土壤不会封堵钢花管上的注浆孔，每分钟注浆量大大提高，降低了钢花管夯入时的阻力，另外通过填塞封孔，可以避免出现漏浆现象。
Existing roadbed steel floral tube grouting method
The invention provides an existing roadbed steel floral tube grouting method. The existing roadbed steel floral tube grouting method comprises the following steps that a first drill bit is adopted to drill a hole in a position to be grouted, and the first drill bit is taken out after the hole is drilled to the hole sealing depth; a steel floral tube is adopted to continue drilling to the designed depth on the basis of hole sealing, a second drill bit is arranged at the end of the steel floral tube located on the inner side, the outer diameter of the first drill bit is larger than that of the second drill bit, and the outer diameter of the second drill bit is larger than that of the steel floral tube; a space enclosed by the inner wall of the sealing hole and the outer wall of the steel floral tube is filled; grouting is conducted in the steel floral tube, and grout permeates into a roadbed through the grouting holes in the steel floral tube. According to the method, a gap is formed between the steel floral tube and a hole wall, soil on the hole wall cannot block the grouting hole in the steel floral tube, the grouting amount per minute is greatly increased, the resistance generated when the steel floral tube is tamped in is reduced, in addition, the grout leakage phenomenon can be avoided by the sealing hole.
本发明提供一种既有路基钢花管注浆方法，包括以下步骤：采用第一钻头向待注浆位置钻孔，且钻至封孔深度后将第一钻头取出；采用钢花管在封孔的基础上继续钻孔至设计深度，位于里侧的钢花管的端部具有第二钻头，且第一钻头的外径大于第二钻头的外径，第二钻头的外径大于钢花管的外径；填塞封孔内壁与钢花管外壁围合空间；向钢花管内注浆，浆液由钢花管上的注浆孔向路基渗透。本发明中，钢花管与孔壁之间具有间隙，孔壁处的土壤不会封堵钢花管上的注浆孔，每分钟注浆量大大提高，降低了钢花管夯入时的阻力，另外通过填塞封孔，可以避免出现漏浆现象。
Existing roadbed steel floral tube grouting method
既有路基钢花管注浆方法
FENG YU (author) / FENG JINLONG (author)
2021-11-26
Patent
Electronic Resource
Chinese
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