Covering type soil filled and soft soil stratum segmented reinforcing device and method

A covering and stratum technology, applied in soil protection, construction, infrastructure engineering, etc., can solve the problems of complex filling and soft soil reinforcement effects are not very ideal, the method is not complete, etc., to achieve good grouting effect, Good development prospects and short construction period

Active Publication Date: 2016-05-04
CHINA FIRST METALLURGICAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these technologies are not ideal for complex filling and soft soil reinforcement due to their incomplete methods.

Method used

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  • Covering type soil filled and soft soil stratum segmented reinforcing device and method
  • Covering type soil filled and soft soil stratum segmented reinforcing device and method
  • Covering type soil filled and soft soil stratum segmented reinforcing device and method

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Experimental program
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Effect test

Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings. Such as Figure 1-Figure 5 As shown in the figure, a cover-type segmental reinforcement filling and soft ground device includes a segmental grouting steel pipe 1, and a grouting core pipe 2 is arranged inside the segmental grouting steel pipe 1, and the grouting core pipe 2 passes through the The joint 13 and the grouting pipe are connected to the grouting machine 6; plum blossom holes 3 are evenly distributed on the segmented grouting steel pipe 1, and each plum blossom hole 3 is provided with a one-way grout stop valve 5; the segmented grouting The bottom ends of the steel pipe 1 and the grouting core pipe 2 are all sealed, and the length of each segment of the segmental grouting steel pipe 1 is consistent with the thickness of each layer of the soil layer; Threaded steel slurry stop ring 12, the center of the steel slurry stop ring 12 is provided with a rubber stop s...

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PUM

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Abstract

The invention discloses a covering type soil filled and soft soil stratum segmented reinforcing device and method. A covering type segmented grouting tube comprises a slurry delivery tube connected with a pressure-adjustable grouting machine; the slurry delivery tube is connected with a grouting core tube via a joint; the bottom end of the grouting core tube is closed while the top end of the grouting core tube is connected with the slurry delivery tube; a segmented grouting steel tube sleeves the outside of the grouting core tube; a plurality of internal grouting holes are uniformly formed in a bottom region of the grouting core tube; a plurality of slurry stopping rings are correspondingly arranged in the segmented grouting tube according to layer thicknesses of soil layers; a rubber slurry stopping plug and a nut are arranged on the top of the segmented grouting tube; and grouting plum blossom holes are uniformly formed in the surface of a tube body of an external grouting tube at intervals. A soil layer on the surface layer is reinforced at first to reinforce and seal a gap between the grouting tube and a hole wall so as to solve the problem that in a lower end deep and thick soft soil reinforcing process, slurry does not leak out from an orifice section and reinforcement in the depth direction is poor, and covering soil reinforcement and deep reinforcement are finished at one step by the same device.

Description

technical field [0001] The invention relates to the technical field of building foundations and underground engineering construction, in particular to a device and method for covering and segmentally reinforcing filling and soft soil strata. Background technique [0002] With the acceleration of urban construction and industrial construction, land has become a non-renewable scarce resource, and a large number of construction projects appear on deep fill and soft soil areas. At present, the foundation treatment of large-area deep fill and soft soil areas mainly adopts treatment schemes such as dynamic compaction and piles. Uneven settlement will occur. Thereby affecting the normal structural safety and normal use, the cost of reprocessing is huge, and the construction period is extended simultaneously. In addition, the construction of shallow buried tunnels in weak strata, especially soil strata, often results in stratum loss due to excavation, large deformation or collapse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/04E02D3/12
CPCE02D3/12E02D15/04E02D2250/003
Inventor 黎明中任若微
Owner CHINA FIRST METALLURGICAL GROUP
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