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Method of treating rock piles by surface grouting and vibratory compacting

A technology of vibratory compaction and rock piles, which is applied to roads, road repairs, roads, etc., can solve the problems of large voids in rock piles, uncontrollable grouting volume, and large grouting volume, so as to reduce foundation voids and improve Bearing capacity and modulus of resilience, effect of low filling and grouting

Inactive Publication Date: 2020-12-29
四川省交通勘察设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Filling and grouting Because of the huge porosity of the rock pile, the amount of grouting is uncontrollable. Even if the curtain is set, it can only solve the overfilling of the surrounding area and cannot close the bottom. Therefore, the amount of grouting is often huge and the cost is higher.

Method used

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  • Method of treating rock piles by surface grouting and vibratory compacting
  • Method of treating rock piles by surface grouting and vibratory compacting

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 , figure 2 Shown, a kind of surface grouting vibratory compaction method for processing rock piles, comprises the following steps:

[0031] S1. Excavate a piece of crushed stone within the range of depth to be treated within the scope of the roadbed 4, place the roadbed 4 between multiple rock piles 1, and pile the excavated pieces of crushed stone on the rock pile 1 near the roadbed 4 to facilitate backfilling gravel;

[0032] S2. Subgrade 4 is gradually filled in layers from bottom to top:

[0033] S21. Perform surface pressureless grouting and vibratory compaction in sequence to form a grouting layer 3. The grouting material 5 used for surface pressureless grouting is cement mortar or cement slurry, and the water-cement ratio of the grouting material 5 is 0.5;

[0034] S22, backfilling pieces of gravel on the grouting layer 3 to form the rock filling layer 2;

[0035] S23, repeating steps S21 and S22, until the filling is completed;

[0036] Wh...

Embodiment 2

[0039] Such as figure 1 , figure 2 As shown, this embodiment is based on Embodiment 1. When the surface is grouted without pressure, the grouting material 5 is directly poured on the surface of the rock filling layer 2, and the grouting material 5 fills the gaps between the broken stones in the rock filling layer 2 under the action of gravity.

Embodiment 3

[0041] Such as figure 1 , figure 2 As shown, this embodiment is based on embodiment 1 or embodiment 2, and the top of the rock filling layer 2 in step S22 is flake gravel.

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Abstract

The invention discloses a method of treating rock piles by surface grouting and vibratory compacting. The method comprises the following steps of S1, excavating macadam blocks in a to-be-treated depthrange in a roadbed range, wherein the roadbed is placed among the plurality of rock piles; and S2, filling the roadbed in layers from bottom to top gradually: S21, performing surface non-pressure grouting and vibratory compacting to form a grouting layer successively; S22, back-filling the grouting layer with the macadam blocks to form a rockfill layer; and S23, repeating the steps S21 and S22 till filling is accomplished. The method can be used for reducing the voidage of the roadbed and improving the bearing capacity and the rebound modulus and is lower than replacement filling and fillinggrouting in cost.

Description

technical field [0001] The invention relates to the technical field of roadbed engineering, in particular to a method for surface grouting vibration compaction treatment of rock piles. Background technique [0002] Collapses and geological disasters occur frequently in mountainous areas, and the collapse of hard rock slopes often forms large rock pile accumulation groups at the foot of the slope. Hard rock piles have the characteristics of large block diameter and obvious overhead (high void ratio). If the roadbed passes without treatment, it will often cause roadbed diseases such as uneven settlement and potholes. There are two types of rock pile treatment methods commonly used in engineering, namely replacement, filling and grouting, or filling and grouting with surrounding curtains. The replacement can be backfilled with earth and rock or stone, and the cost will be increased. Filling grouting is because of the huge porosity of the rock pile, and the grouting amount is ...

Claims

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Application Information

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IPC IPC(8): E01C3/04E01C19/28
CPCE01C3/04E01C19/28
Inventor 王希宝袁松张生
Owner 四川省交通勘察设计研究院有限公司
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