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Saline soil area combined drain system and combined water drain forced ramming foundation treating method thereof

A drainage system and foundation treatment technology, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of poor saline soil treatment effect, long construction period, and insignificant foundation bearing capacity, and shorten the construction period of foundation treatment. , The effect of improving the bearing capacity and modulus of the foundation and saving the cost of foundation treatment

Inactive Publication Date: 2009-01-21
JIAN YAN FOUND ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the limitations of conventional dynamic compaction in treating saline soil, in order to overcome the shortcomings of existing conventional dynamic compaction in the treatment of saline soil in salt lake areas, the present invention provides a combined drainage system for saline soil areas and combined drainage dynamic compaction Ground treatment method, the method is referred to as DCD (Dynamic consolidation, Combined, Drainage) dynamic compaction method, to solve the technical problems that the foundation bearing capacity is not significantly improved after foundation treatment, but the cost is expensive and the construction period is long

Method used

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  • Saline soil area combined drain system and combined water drain forced ramming foundation treating method thereof
  • Saline soil area combined drain system and combined water drain forced ramming foundation treating method thereof
  • Saline soil area combined drain system and combined water drain forced ramming foundation treating method thereof

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Effect test

Embodiment 1

[0062] Embodiment 1 Referring to Figure 9, this combined drainage system for saline soil areas is characterized in that it is composed of plastic drainage strips 1 arranged longitudinally in the foundation soil and sand and gravel drainage piles 2 distributed therebetween to form a drainage system one by one. channel, the upper end of the drainage channel in a local area merges into a ramming pit 5, and a drainage pump 9 is arranged in the ramming pit, and the drainage pump 9 is connected with a drainage pipe 10.

[0063] This method of combined drainage and dynamic compaction foundation treatment in saline soil areas requires the following design to be completed before construction to determine the basic design parameters:

[0064] 1. Select the model of the plastic drainage belt, and determine the length, arrangement, spacing, etc. of the plastic drainage belt.

[0065] 2. Determine the pile diameter, pile length, pile distance and pile body material of the drainage pile.

...

Embodiment 2

[0076] Embodiment 2 Referring to Figure 1116, the difference from Embodiment 1 is that the construction sequence of the combined drainage system in Step 1 is to construct the sand and gravel drainage pile 2 first and then construct the plastic drainage belt 1 .

[0077] Refer to Figure 17-23 for the construction steps of the above-mentioned gravel drainage piles:

[0078] Referring to Figure 17 for step a, the pile driver is in place and the pile pipe 7 is ready. The pile tube is a variable-diameter pile tube, which is selected according to the designed feeding amount of each sand and gravel drainage pile. The pile hole formed by the variable-diameter pile pipe is larger than the designed pile diameter.

[0079] Referring to Figure 18 for step b, start the pile driver to make the pile pipe 7 sink vertically at the set position.

[0080] Refer to Figure 19 for step c, the pile pipe is sunk to the design depth.

[0081] Referring to Fig. 20 for step d, put the coarse granular...

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Abstract

The invention relates to a combined drainage system in a saline oil region and a method for processing the combined drainage and strongly tamping foundation. The method comprises the following steps: firstly, the combined drainage system for dredging and discharging groundwater is arranged in the foundation soil of a treatment region; the combined drainage system comprises a drainage passage combined by plastic drainage strips and dinas drainage piles; each plastic drainage strip and each dinas drainage pile are covered and a construction and operation surface layer is paved on the surface of the treatment region; the strongly tamping is carried out on the construction and operation surface layer by a tamping hammer; a tamping pit is formed in each dynamic tamping position; after groundwater in the foundation is collected in the tamping pits, pumped and discharged to the outside of a construction field; and the tamping pits are backfilled and leveled, thereby completing the first point tamping. The combined drainage system and the method solve the problem of discharging groundwater, substantially improve the bearing capacity of the foundation and the modulus, meet the requirements of constructing various buildings in the saline oil region, can save the expenses of foundation treatment by over 40 percent and shorten the construction period of the foundation treatment by more than one half.

Description

technical field [0001] The invention relates to a foundation water discharge system and a foundation treatment method, in particular to a saline soil foundation treatment method. Background technique [0002] Qaidam Salt Lake is a natural resource in Qinghai Province and an important mineral resource for the western development strategy. Salt Lake development is one of the pillar industries in Qinghai Province. The soil in the salt lake area is saline soil, and its natural foundation strength is low, and the superstructure can only be carried out after treatment. Due to the high groundwater level in the salt lake area, about 1m below the surface, and almost all brine with saturated salt content, rich in a large amount of minerals, there are serious corrosion problems. None of these methods can be used. For many years, the local area can only use various sandstone pile composite foundations for foundation treatment. However, because the reinforcement mechanism of the sand-s...

Claims

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Application Information

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IPC IPC(8): E02D3/046E02D3/10
Inventor 杨军王玉祥彭芝平陈耀光连镇营
Owner JIAN YAN FOUND ENG
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