A method of filling and grouting for pipeline repair
A pipeline repair and grouting technology, which is applied in the direction of pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problems of increasing the complexity of the grouting process and the inability to ensure the filling density
Active Publication Date: 2020-04-28
管丽环境技术(上海)有限公司
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Problems solved by technology
[0003] The grouting of pipelines in existing construction adopts the method of grouting from both ends. On the one hand, this scheme cannot guarantee the compactness of filling. On the other hand, it needs the input of internal support during the grouting process. Floating requires filling the pipe with water
Thereby increasing the complexity of the whole grouting process
Method used
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[0091] During the installation of the liner, place wedges (blocks) up, down, left, and right (such as Image 6 As shown), the lining pipe is installed, and the gap between the old and new pipes at both ends is sealed with a sealing material. At the position from 11:00 to 1:00 of the inner liner pipe, holes are made along the longitudinal pipe at one time. According to the situation of the grouting stage, holes are made at the downstream sealing point, and air holes are made at the highest point upstream (such as Figure 5 shown). Open the grouting hole, 1 meter away from the upstream nozzle, open holes at 11 o'clock and 1 o'clock in the circle, and then open holes side by side every 5 meters (such as Figure 7 shown) or cross holes every 2.5 meters (such as Figure 8 shown).
[0092] The first stage of grouting: it plays the role of fixing the inner liner. The first grouting is grouted from upstream to downstream:
[0093] 1. After the lining pipe is finished, there are g...
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The invention discloses a method of filling grouting for pipeline repairing. The method is used for reinforcing a gap between an original pipeline and a new pipeline, procedures are divided into threesteps to carry out, a grouting hole is formed in a grouting pipe through the first procedure, grouting is carried out from the upstream to the downstream, and the grouting amount which accounts for 20%-30% height of a pipe diameter of the original pipeline is finished; the grouting hole is formed in the grouting pipe through the second procedure, the grouting is carried out from the upstream to downstream, and the grouting amount which accounts for 60%-70% height of the pipe diameter of the original pipeline is finished; and the grouting hole is formed in the grouting pipe through the third procedure, the grouting is carried out from downstream to upstream, and grouting filling operation is completed. According to the method, the method of filling grouting for the pipeline repairing, thegrouting filling of gaps between the pipelines is completed through grouting operation of the three procedures in sequence, on the premise that the supporting equipment required by the grouting is notneeded, the compactness of the filling is ensured, and the interference of the water stopping operation environment is avoided.
Description
technical field [0001] The invention belongs to the field of pipeline repair in municipal engineering, and in particular relates to a filling and grouting method for pipeline repair. Background technique [0002] Pipeline grouting is widely used in the non-excavation repair of pipelines, especially in the repair technology of composite pipelines. Grouting technology is required to inject filling grout into the gap between the old and new pipelines to strengthen the compactness between the old and new pipelines and strengthen Ring stiffness of the repaired pipe. [0003] The grouting of pipelines in existing construction adopts the method of grouting from both ends. On the one hand, this scheme cannot guarantee the compactness of filling. On the other hand, it needs the input of internal support during the grouting process. Floating requires filling the pipe with water. Thereby increasing the complexity of the whole grouting process. [0004] The invention application with...
Claims
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IPC IPC(8): F16L55/162
CPCF16L55/162
Inventor 孙跃平杨后军孙大为
Owner 管丽环境技术(上海)有限公司