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Sand bag well point composite light well point deep rapid-draining dynamic consolidation method

A light-duty well point and dynamic consolidation technology, which is applied in basic structure engineering, soil protection, construction, etc., can solve the problem that the dynamic compaction method is difficult to achieve the ideal effect and depth, and it is difficult to meet the needs of deep reinforcement of soft soil foundation , Ultra-static pore water pressure dissipates slowly and other issues, to achieve the effect of fast and controllable treatment, high cost performance, and short construction period

Inactive Publication Date: 2008-09-10
叶凝雯 +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The depth of precipitation cannot reach below 6m, especially in the process of precipitation construction in silty soil, because of its small permeability coefficient, the super static pore water pressure after dynamic compaction dissipates slowly (it takes more than a month to dissipate), which makes the Daminggou precipitation It is difficult to achieve the ideal effect and ideal depth in combination with the dynamic compaction method, such as light well point dewatering, so it is difficult to meet the needs of deep reinforcement of soft soil foundation

Method used

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  • Sand bag well point composite light well point deep rapid-draining dynamic consolidation method
  • Sand bag well point composite light well point deep rapid-draining dynamic consolidation method

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Embodiment Construction

[0023] The specific process steps of this construction method are as follows (dynamic consolidation takes dynamic compaction as an example):

[0024] Step 1. Arrange sandbag well points

[0025] For the weak foundation that needs to be treated, according to the design requirements and geological conditions, use the "water flushing method" or "mechanical intubation method" to place sand bags into the weak foundation soil to be treated, arrange sand bag well points, and place sand bags at a distance of Below the surface of 0.5m, the surface layer shall be sealed with clay; figure 2 . The depth and spacing of sandbag well points are determined according to the required reinforcement depth.

[0026] Step 2. Insert a light well point pipe in the sand bag well point, such as figure 1 , the length of the light well point pipe is 6m, and the light well point pipe is processed and manufactured according to the traditional light well point pipe. Light well point tubing connects the...

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Abstract

The invention relates to a composite light well point deep layer rapid discharging power concretion method in a sandbag well point, which comprises the following steps: a sandbag well point is arranged; a light well point pipe is inserted to the sandbag well point; a first precipitation construction in the light well point is carried out; the light well point pipe is drawn out; a first dynamic tamping construction is carried out; after the tamping, a tamping pit is shoved flatly; a second insertion of the light well point pipe is carried out in the original sandbag well point position; a second precipitation construction in the light well point is carried out; the light well point pipe in the sandbag well point is drawn out; a second dynamic tamping construction is carried out; after the tamping, the tamping pit is shoved flatly; a third insertion of the light well point pipe is carried out in the original sandbag well point position; a third precipitation construction in the light well point is carried out; the light well point pipe in the sandbag well point is drawn out; a third dynamic tamping construction is carried out; through a plurality of turns of precipitation constructions in the light well point and dynamic tamping constructions, the last full tamping is carried out. The method can improve the quality of reinforcing the deep layer of the soft foundation which needs to be treated.

Description

technical field [0001] The invention relates to a soft soil foundation treatment method, in particular to a large-area soft soil foundation treatment using sand bag wells combined with light wells (vacuum wells, electroosmotic wells) and precipitation combined with dynamic consolidation construction method. It is suitable for deep treatment of weak ground. It belongs to the technical field of foundation treatment. Background technique [0002] At present, in the large-scale construction of weak foundations, especially in the construction of storage yards and roads, in order to accelerate the improvement of bearing capacity, the method of reducing the water content of the soil in the area to be treated is usually adopted, that is, the method of precipitation, for example, in the area to be treated. Daming ditch dewatering, light well point dewatering and other methods, combined with dynamic compaction, vibratory rolling or impact rolling to achieve rapid consolidation. In f...

Claims

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Application Information

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IPC IPC(8): E02D3/02E02D3/10E02D3/046
Inventor 叶凝雯叶吉
Owner 叶凝雯
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