Backfill device and method for trenchless tow tube construction
A pipe-drawing and trenchless technology, which is applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., can solve problems such as hidden dangers in the quality of trenchless projects, ground subsidence, etc., to avoid project quality problems, The effect of solving the backfill problem and the construction method is simple and easy
Inactive Publication Date: 2010-01-27
浙江尤尼克管业有限公司
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Problems solved by technology
This method is easy to cause ground subsidence, which brings certain hidden dangers to the quality of trenchless engineering.
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[0029] Examples see figure 1 , figure 2 As shown, the backfilling device for the non-excavation pulling pipe construction includes a grouting pipe 2, which is fixed on the outer wall of the pipe to be pulled 1 and arranged along the length of the non-excavating hole 10. The above-mentioned grouting hole 3 The distribution interval is 20cm-30cm, and the size can be Φ12-Φ16. see Figure 3-5 As shown, the grouting pipe 2 is fixed to the pulled pipe by a cable tie 4. The cable tie 4 is an injection molded part with an ear hole. Grouting holes 3 are uniformly worn on the pipe wall of the grouting pipe 2, and the tail of the grouting pipe passes through the pipe well 9 upwards from the end of the non-excavation hole, and is connected with the slurry outlet of the mud pump 5 on the ground 11. Connect with mud pool 6. The mud pool 6 communicates with the stirring pool 7, and a beater 8 is arranged in the stirring pool 7.
[0030] A backfilling method for trenchless pipe construc...
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A backfill device and method for trenchless towing pipe construction. The device includes a grout pipe which is fixed on the outer wall of the towed pipe and arranged along the length of the trenchless hole. The wall of the grout pipe is uniformly penetrated with grout holes. The tail of the grout pipe upwards penetrates the piping shaft from the trenchless hole end part and connects with the slush pump grout outlet on the ground. The grout inlet of the slush pump connects with the mud pit. The invention adopts grouting method, binds the grout pipe outside the pipe after the towed pipes are fused, and then implements towing process. Thus, the towed pipe and grout pipe are in synchronism to achieve the even grouting. The inventive backfill device can uniformly fill the gap between the towed pipe and the trenchless hole and solves the trenchless pipe backfilling problem. The construction method is easy and practical, avoids the engineering quality problem generated by the solid filling between the towed pipe and the pore.
Description
technical field [0001] The invention belongs to pipeline non-excavation construction tools and methods. Background technique [0002] The non-excavation construction of pipelines was introduced into my country in the late 1990s. When it was first introduced, it was used in the communication industry. The non-excavation aperture was very small Φ80~Φ110. At the beginning of the 20th century, people began to gradually increase the non-excavation caliber. , from Φ110 to Φ160, Φ200 to Φ315, the caliber reached Φ500 in 2004, the non-excavation caliber reached Φ800 in 2007, and the construction of Φ1000 in 2008. [0003] In the non-excavation construction process, the holes are drilled according to the design requirements first, and the hole diameter is always larger than the pipe diameter, generally 10% to 15% larger than the pipe diameter, especially when the dragging construction method is used, because the PE to be pulled The pipe is very long, the longest is 2600m, so the hole...
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IPC IPC(8): F16L1/028
Inventor 周东方黄楠伟吴念
Owner 浙江尤尼克管业有限公司