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Sealed grouting front end device and grouting construction method

A sealing and grouting technology, which is applied in infrastructure engineering, construction, etc., can solve problems such as being easily blocked by soil and affecting the grouting effect, and achieves the effect of easy cleaning and replacement, and easy disassembly and assembly

Inactive Publication Date: 2020-10-30
上海隧道地基基础工程有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a sealed grouting front-end device and a grouting construction method to solve the technical problem in the prior art that the grouting holes at the front end of the grouting pipe are easily blocked by soil and affect the grouting effect

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  • Sealed grouting front end device and grouting construction method
  • Sealed grouting front end device and grouting construction method
  • Sealed grouting front end device and grouting construction method

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Embodiment Construction

[0029] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear ", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation , constructed and operated in a particular orientation and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance...

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Abstract

The invention discloses a sealed grouting front end device and a grouting construction method. The device comprises a protective casing, a junction pipe and a grouting connection pipe. The first end of the protective casing is detachably connected with a conical head; the pipe wall of the junction pipe is provided with a grouting hole, the protective casing covers the grouting hole by sleeving theouter side of the junction pipe, and the junction pipe and the protective casing can be relatively movably arranged and are provided with an anti-drop structure; and the first end of the grouting connection pipe is detachably connected to the end, far away from the conical head, of the junction pipe, and the first end of the protective casing sleeves the outer side of the first end of the grouting connection pipe and is provided with a sealing ring. When the grouting front end device carries out drilling in the soil body, the device is in a closed state, due to the fact that the sealing ringis additionally arranged, the front end device is in a closed state, silt is prevented from entering the device from the grouting hole to cause blockage, when a grouting pipe reaches a designed grouting position, grouting pressure is applied to the grouting pipe, the protective casing receives forward thrust, therefore, the device is opened, the grouting hole is exposed, and grouting is carried out.

Description

technical field [0001] The invention relates to the technical field of underground engineering construction, in particular to a sealed grouting front-end device and a grouting construction method that are opened by pump pressure. Background technique [0002] In the prior art, grouting holes are provided on the side wall of the front end of the grouting pipe used for underground engineering construction. When the pipe is lowered, the grouting hole is covered with a material that is easy to wrap. After entering the soil, the grouting pressure is relied on. Break or squeeze the wrapping material before grouting. However, when the pipe is lowered, the packing material may be damaged by soil extrusion, and the soil enters the pipe to block the grouting hole. If the grouting hole is tightly wrapped with a higher-strength packing material to protect the grouting hole, the grouting hole may not be fully opened during grouting, and the grout is sprayed unevenly, which will affect t...

Claims

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Application Information

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IPC IPC(8): E02D15/02
CPCE02D15/02E02D2250/003
Inventor 张帆何小玲钱峰黄斌李永迪黄永清荀晨栋施承欢杨化振
Owner 上海隧道地基基础工程有限公司
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