Water-repelling shotcrete anchor support method and water-repelling device for red sandstone layer

A spray anchor support and water isolation technology, which is applied in excavation, construction, infrastructure engineering, etc., can solve problems such as difficult to support the support surface, bulging shedding, cracks, etc.

Active Publication Date: 2021-06-11
甘肃建研建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned technical problems, the present invention provides a water-proof spraying and anchoring method for the red sandstone layer, which can solve the problem that due to the characteristics of the rock and soil of the red sandstone layer, after the red sandstone is supported, the support surface is caused by the pebble layer on the top of the red sandstone layer. Water seepage often leads to problems such as difficulty in support or cracks or even bulges falling off on the support surface

Method used

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  • Water-repelling shotcrete anchor support method and water-repelling device for red sandstone layer

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1 As shown, a water-proof device of a water-proof spray-bolt support method for a red sandstone layer includes a plastic cloth 1, the plastic cloth 1 is vertically installed on the rock mass wall between the piles of the support pile, and the plastic cloth 1 is externally fixed and installed Reinforcement skeleton 2, reinforcement skeleton 2 exterior fixedly installs straw curtain 3, straw curtain 3 exterior fixed installation reinforcement mesh sheet 4.

[0025] A water-proof shotcrete anchor support method for red sandstone layer, comprising the following steps:

[0026] a. After the construction of the supporting piles for the foundation pit, excavate the soil between the piles in vertical layers and horizontal sections. speed determination;

[0027] b. After excavating in vertical layers and horizontal sections, excavate the excavation surface again perpendicular to the foundation pit support surface to expose the pile body, and excavate the excavat...

Embodiment 2

[0031] Such as figure 1 As shown, a water-proof device of a water-proof spray-bolt support method for a red sandstone layer includes a plastic cloth 1, the plastic cloth 1 is vertically installed on the rock mass wall between the piles of the support pile, and the plastic cloth 1 is externally fixed and installed Reinforcement skeleton 2, reinforcement skeleton 2 exterior fixedly installs straw curtain 3, straw curtain 3 exterior fixed installation reinforcement mesh sheet 4.

[0032] A water-proof shotcrete anchor support method for red sandstone layer, comprising the following steps:

[0033] a. After the construction of the supporting piles for the foundation pit, excavate the soil between the piles in vertical layers and horizontal sections. On-site construction speed determination;

[0034] b. After excavating in vertical layers and horizontal sections, excavate the excavation surface again perpendicular to the foundation pit support surface to expose the pile body, and...

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Abstract

The invention discloses a water-repellent spraying and anchoring method for red sandstone layer, which comprises the following steps: a. vertical layering and horizontal segmental excavation of the soil between piles; b. vertical layering and horizontal segmental excavation; After section excavation; c. Fix plastic cloth in the vertical pit excavated in step b; d. Spray C20 fine stone concrete with a thickness of not less than 80mm on the steel mesh sheet in step c. The invention also discloses a water-repelling device for the water-repelling spraying and anchoring support method of the red sandstone layer. The outside of the plastic cloth is fixedly installed with a reinforcement frame, and the outside of the reinforcement frame is fixed with a straw curtain, and the outside of the straw curtain is fixed with a reinforcement mesh sheet. The invention solves the problem that due to the characteristics of the rock and soil of the red sandstone layer, after the red sandstone is supported, the support surface is often difficult to support due to water seepage from the pebble layer at the top of the red sandstone layer, or the support surface has cracks or even bulges fall off.

Description

technical field [0001] The invention relates to the technical field of support methods, in particular to a water-proof spray-bolt support method for red sandstone layers and a water-proof device thereof. Background technique [0002] In recent years, with the development of the national economy, the basement in the main urban area of ​​the city has shown a trend of getting deeper and deeper. Most of the basements of newly built houses are designed with 2-3 floors. In order to ensure the safety of surrounding buildings (structures), foundation pit support care is particularly important. [0003] For deep foundation pits, there are various forms of support. Considering economy, safety, and applicability, the support of deep foundation pits is mostly based on pile-anchor support. "Open row" or "occlusal pile water stop + anchor cable + tube well dewatering" comprehensive support and dewatering method is the main method [0004] However, when the rock layer in the foundation p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 史智伟舒蓉闫鹏程雒奇奇潘有旺路志南杨全兵
Owner 甘肃建研建设工程有限公司
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