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

Abstract

The invention relates to a combined drainage system in a saline oil region and a method for treating the strongly tamping foundation. The method comprises the following steps: firstly, plastic drainage strips are constructed in a treatment region, then a dinas drainage undercourse is paved on the position of the surface of the treatment region coated with each drainage strip; the plastic drainage strips and the dinas drainage undercourses are combined to form a passage for dredging and discharging groundwater; points are distributed on the dinas drainage undercourses and strongly tamped by a tamping hammer; a tamping pit is formed in each strongly tamping position; after the groundwater in the foundation flows into each plastic drainage strip, flows to the dinas drainage undercourse by the plastic drainage strips and are collected in the tamping pits by the dinas drainage undercourses; the groundwater collected in the tamping pits is pumped and discharged to the outside of a construction field; and finally, the tamping pits are backfilled and leveled. The combined system and the method can substantially improve the bearing capacity of the foundation and the modulus, meet the requirements of constructing various buildings in the saline oil region, save the expenses of foundation treatment and shorten the construction period of the foundation treatment.

Description

technical field [0001] The invention relates to a foundation drainage system and a foundation treatment method thereof, in particular to a foundation treatment method in saline soil areas. Background technique [0002] Qaidam Salt Lake is a natural resource in Qinghai Province and an important mineral resource in the western development strategy. 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-stone pile composite foundation is not suitable for the stratum con...

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Problems solved by technology

[0005] Aiming at the limitations of conventional dynamic compaction in treating saline soil, in order to overcome the disadvantages 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 its dynamic compaction foundation Treatment method, the method is referred to as DCD (Dynamic compaction, Combined, Drainage) dynamic compaction method, to solve the technical problems that the bearing capacity of the foundation after foundation treatment is not significantly improved, but the cost is expensive and the construction period is long

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