Newly-built top pipe well and old pipe well connecting construction method
A construction method and pipe jacking technology, which can be used in construction, artificial islands, water conservancy projects, etc., can solve the problems of high consumption of manpower and material resources, long construction period, and large amount of excavated soil, and achieve labor saving, short construction period, and ground traffic. small effect
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[0017] The present invention is further illustrated by specific examples below.
[0018] A construction method for connecting a newly-built pipe jacking well and an old pipe well; it includes connecting steel pipes, and further includes the following steps:
[0019] Step 1. Construct a new pipe jacking well structure, and reserve connection steel pipe installation ports according to design requirements;
[0020] Step 2. Use high-pressure jet grouting piles and compaction grouting to reinforce both sides of the interface area where the old tube well and the new tube well are connected to the connecting pipeline; around the interface between the tube well and the connecting steel pipe, use ordinary Portland cement and water glass mixed slurry through injection The grout pipe performs layered grouting reinforcement on the soil;
[0021] Step 3. After all the construction of the new pipe jacking and pipe jacking well structure is completed, cut the retaining structure to 70% of the outer ...
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