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Hole-forming construction process for slope-protecting pile in complex geologic environment

A technology with complex geology and construction technology, applied in infrastructure engineering, drilling equipment and methods, excavation, etc., and can solve problems such as hole wall collapse

Active Publication Date: 2021-02-23
北京住总第一开发建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to avoid the problem of hole wall collapse during and after hole formation of slope protection piles, this application provides a construction technology for slope protection pile hole formation in complex geological environments

Method used

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  • Hole-forming construction process for slope-protecting pile in complex geologic environment
  • Hole-forming construction process for slope-protecting pile in complex geologic environment
  • Hole-forming construction process for slope-protecting pile in complex geologic environment

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Experimental program
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Effect test

Embodiment 1

[0054] refer to figure 1 , figure 2 , the complex geological environment slope protection pile hole-forming construction technology includes the following steps;

[0055] S1. Layer division of soil layers to be formed by slope protection piles

[0056] According to the thickness of the miscellaneous fill layer 1, the layers are divided, and the 10m thick miscellaneous fill layer 1 is divided into N layers according to the thickness of each layer of 1.5m from top to bottom. In this embodiment, the value of N is 7, 1-6 The thickness of each layer is 1.5m, and the thickness of the bottom layer is 1m.

[0057] Measure and set out the line, determine the position of the slope protection pile hole on the ground and mark the serial number, and carry out the drilling construction according to the sequence of the number when the hole is formed.

[0058] In this embodiment, a dry hole-forming construction method is adopted. The drilling rig is in place, and the drilling rig adopts ...

Embodiment 2

[0084] refer to figure 2 , image 3 , the complex geological environment slope protection pile hole-forming construction technology includes the following steps;

[0085] S1. Layer division of soil layers to be formed by slope protection piles

[0086] According to the thickness of the miscellaneous fill layer 1, the layers are divided. From top to bottom, the 10m thick miscellaneous fill layer 1 is divided into 7 layers according to the thickness of each layer of 1.5m. The thickness of one layer is 1m.

[0087] Measure and set out the line, determine the position of the slope protection pile hole on the ground and mark the serial number, and carry out the drilling construction according to the sequence of the number when the hole is formed.

[0088] In this embodiment, a dry hole-forming construction method is adopted. The drilling rig is in place, and the drilling rig adopts rotary drilling bits. The number of rotary drilling bits used is 8 and marked in the order of 1-...

Embodiment 3

[0119] refer to Figure 4 , Figure 5 , the complex geological environment slope protection pile hole-forming construction technology includes the following steps;

[0120] S1. Layer division of soil layers to be formed by slope protection piles

[0121] According to the thickness of the miscellaneous fill layer 1, the layers are divided, and the 10m thick miscellaneous fill layer 1 is divided into N layers according to the thickness of each layer of 1.5m from top to bottom. In this embodiment, the value of N is 7, 1-6 The thickness of each layer is 1.5m, and the thickness of the bottom layer is 1m.

[0122] Measure and set out the line, determine the position of the slope protection pile hole on the ground and mark the serial number, and carry out the drilling construction according to the sequence of the number when the hole is formed.

[0123] In this embodiment, a dry hole-forming construction method is adopted. The drilling rig is in place, and the drilling rig adopts...

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Abstract

The invention relates to a hole-forming construction process for a slope-protecting pile in a complex geologic environment, and belongs to the technical field of foundation construction. The hole-forming construction process comprises the following steps: performing weak stratum layer division for dividing a weak stratum into N layers; drilling layer by layer, pouring plain concrete into drilled holes, and performing secondary drilling on a concrete layer to form pile holes of layer positions after strength of the plain concrete meets requirements; clearing the holes and making pile-forming construction preparation for the next step. The method of concrete layering and wall-protecting is adopted, so that the problem that a conventional way is liable to have hole collapse during hole-forming is avoided, and the effect in a case of having underground water in miscellaneous fill soil is more obvious.

Description

technical field [0001] The application relates to the field of foundation construction, in particular to a construction technique for forming holes in slope protection piles in complex geological environments. Background technique [0002] With the construction and development of urban high-rise buildings, the corresponding deep foundation pit excavation and support technology has also been improved accordingly. In the case that the effective width of the working face of foundation pit grading is not enough, slope protection piles are used to support the edge of the foundation pit to prevent the slope from collapsing. Slope protection piles, also known as "row piles", usually use a drilling rig to form holes at one time. [0003] However, due to the impact of human activities, the foundation of many engineering constructions is often no longer the original soil layer but the mixed fill soil after backfilling. Due to the different filler materials, the particle size of this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/00E21B33/13E21B21/00E02D17/20E02D17/08
CPCE21B7/00E21B33/13E21B21/00E02D17/207E02D17/08Y02A10/23
Inventor 李武光马跃李金树齐宝廷王晨宇鲁阳谭华锋刘志杰吉邵昃魏伟冯紫昂
Owner 北京住总第一开发建设有限公司
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