Pore submersible deep foundation pit self-drilling type anchor rod construction method

A technology for bolt construction and pore diving, which is used in basic structure engineering, excavation, and basic structure testing. It can solve the problems of long time, high survey cost, and limited number of points, so as to improve mechanical properties and reduce construction costs. , The effect of grouting convenient

Inactive Publication Date: 2021-01-29
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This often takes a long time and the survey cost is high, and due to the limited number of points

Method used

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  • Pore submersible deep foundation pit self-drilling type anchor rod construction method
  • Pore submersible deep foundation pit self-drilling type anchor rod construction method
  • Pore submersible deep foundation pit self-drilling type anchor rod construction method

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Embodiment

[0054] Refer to attached figure 1 As shown, the present invention provides a technical solution: a self-drilling bolt construction method for submerged deep foundation pits, comprising the following steps:

[0055] S1, pre-construction preparation, build a construction platform in the construction area, and the construction personnel will position and stake out the required drilling area, and clean up the floating soil on the rock surface, loose rocks and vegetation, and the entry of materials at the construction site;

[0056] In this embodiment, each working procedure is:

[0057] S1a, erection of the construction platform, erecting the construction platform in the construction area according to the construction area marked in advance survey;

[0058] S1b, positioning and setting out, determine the hole position according to the drawing design requirements, and determine the water slurry construction mix ratio according to the obtained data;

[0059] S1c, leveling the site...

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Abstract

The invention provides a pore submersible deep foundation pit self-drilling type anchor rod construction method, belongs to the technical field of self-drilling type anchor rod construction. Aiming atthe geology with large water content and large void ratio, the self-drilling type anchor rod construction is adopted, hole collapse can be effectively prevented, the bonding strength of cement pasteand hole wall rock mass can be guaranteed, anti-sliding force can be actively provided, displacement of a rock body is effectively controlled, a sub-stress zone is generated within the anchoring rangeof an anchor rope, and therefore, the mechanical property of the rock body can be fundamentally improved, various special drill bits matched with the self-drilling anchor rod are can be suitable forvarious stratums, a high-strength coupling sleeve processed by a mechanical cutting process is adopted, and the self-drilling type anchor rod has the characteristic of being lengthened while drilling,so that the self-drilling anchor rod can be used for constructing a longer anchor rod in a narrow construction space, grouting is convenient and compact, and the anchoring strength is increased. Compared with common anchor rod construction, for the method disclosed by the invention, the construction cost can be greatly reduced, energy is saved, emission is reduced, and environment-friendly construction is facilitated.

Description

technical field [0001] The invention belongs to the technical field of self-drilling bolt construction, and in particular relates to a self-drilling bolt construction method for submerged deep foundation pits. Background technique [0002] Pore ​​submerged deep foundation pit self-drilling anchor construction method is a kind of self-drilling anchor rod drilling and grouting in the pore submerged deep foundation pit, and through the hole grouting consolidation, part of the grout will penetrate into the surrounding area under pressure. Rock fissures, the consolidated surrounding rock forms a whole, so that the surrounding rock mass within a certain thickness range forms a "bearing ring" construction method. Wherein, the outer end of the anchor cable is fixed to the concrete pile body, and the other end is anchored in the stable rock mass. The prestress of the anchor cable makes the unstable soil in a state of high confining pressure and the structural surface is in a compact...

Claims

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Application Information

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IPC IPC(8): E02D5/76E02D15/04E02D17/04E02D33/00
CPCE02D5/76E02D15/04E02D17/04E02D33/00E02D2250/003E02D2300/0023
Inventor 王胜涛耿进山欧阳广昊侯庆敏赵若天张思涛
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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