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Composite soil nailing wall slope support method

A composite soil nail and side slope technology, which is applied in excavation, sheet pile wall, construction and other directions, can solve the problems of difficult to ensure construction quality, cumbersome construction technology, low efficiency, etc., and achieves improved construction quality, high safety, and general use. sexual effect

Inactive Publication Date: 2013-09-25
CHINA METALLURGICAL CONSTR ENG GRP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] The existing steel pipe soil nailing construction requires special equipment to directly drive the steel pipe into the soil layer, which has problems such as cumbersome construction technology, high cost, low efficiency, and difficulty in ensuring construction quality.

Method used

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  • Composite soil nailing wall slope support method
  • Composite soil nailing wall slope support method

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the drawings and specific embodiments.

[0018] A method for supporting the slope of a composite soil-nail wall includes the following steps:

[0019] 1) Determine the location of the drilling hole: lay multiple soil nail locations on the composite soil nail wall on the backfill loose surface or slope 1 under high weathering geological conditions that need to be supported, and use this location as the drilling location.

[0020] 2) Hole formation: first align the drill bit 2 to the drilling position, the drill rig drives the drill rod 3 to drive the drill bit 2 to drill. During the drilling process, the follow-up casing 4 sleeved outside the drill rod 3 follows the drill rod 3 Gradually press inward until it reaches the design depth requirement; then exit the drill pipe 3 and the drill bit 2 through the drill. Such as figure 1 As shown, the follow-up casing 4 should be followed by compaction d...

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Abstract

The invention discloses a composite soil nailing wall slope support method. The composite soil nailing wall slope support method comprises the following steps that (1) a drilling position is confirmed; (2) holes are formed, wherein a drill is aligned to the drilling position, a drill rod is driven by a drilling machine and the drill is driven to drill, in the drilling process, a follow-up sleeve sleeved outside the drill rod is gradually pressed inwards along with the drill rod until a design depth requirement is satisfied, and then the drill rod and the drill are backed out; (3) slurry injecting is conducted, wherein a butted molten steel spark pipe is inserted in the drilled hole, and slurry is injected in the molten steel spark pipe through a slurry jacking pump, in the process that the slurry is injected in the molten steel spark pipe, the follow-up sleeve is pulled outwards while slurry injecting is conducted, and the follow-up sleeve is completely backed out of the formed hole until slurry injecting in the molten steel spark pipe is finished. The composite soil nailing wall slope support method is suitable for high slope support of various slopes (particularly suitable for slope support of a backfilling loose ground surface or slope support under a high weathered geological condition), installment is easy to conduct, safety is high, operations are easy to conduct, and the construction cost is low.

Description

technical field [0001] The invention relates to a construction method for slope support in the field of construction engineering, in particular to a method for supporting a slope with a composite soil nailing wall and grouting grouted with casing-forming hole-forming steel flower tubes. Background technique [0002] The traditional bolt support slope technology is to transmit the load of the unstable rock and soil mass on the surface to the stable position deep in the rock mass through the tension rod, so as to realize the stability of the reinforced rock and soil mass. The anchor rod can be stretched and can be Prestressing is applied, and the anchor stress is the same at the free end. [0003] The existing steel pipe soil nailing construction requires special equipment to directly drive the steel pipe into the soil layer, which has problems such as cumbersome construction technology, high cost, low efficiency, and difficulty in ensuring construction quality. Contents of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D5/74
Inventor 陈国民潘津
Owner CHINA METALLURGICAL CONSTR ENG GRP
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