Prepressing structure and method used for sea reclamation through blown filled muck

Abstract

The invention discloses a prepressing structure used for sea reclamation through blown filled muck. The blown filled muck is located in an original foundation and includes vertical water draining bodies arranged in the blown filled muck, a water falling pipe parallel to the vertical water draining bodies, and a bottom sand layer arranged at the bottom of the blown filled muck. The water falling pipe is of a hollow structure, an upper section of the water falling pipe is arranged to be a non-porous section, and a lower section of the water falling pipe is arranged to be a porous section. The porous section is located in the original foundation and the bottom sand layer. A water suction pump and a water pumping pipe are arranged in the water falling pipe. The water suction pump is located at the bottom of the porous section. The input end of the water pumping pipe is connected with the water suction pump, and the output end of the water pumping pipe extends to the top of the water falling pipe. A vacuum pipe layer is arranged on the tops of the vertical water draining bodies and the top of the water falling pipe in a communicating manner, and a vacuum film is arranged on the vacuum pipe layer. The vacuum pipe layer is connected with a vacuum pump. The invention further discloses a method used for sea reclamation through the blown filled muck. By means of the prepressing structure and the method, a vacuum water falling and prepressing combining effect can be achieved, a water draining effect is better, a foundation solidifying effect is better, and the bearing force is higher.

Description

technical field [0001] The invention belongs to the technical field of sea reclamation and land reclamation, and in particular relates to a preloading structure and method for land reclamation by dredging and filling mud for land reclamation. Background technique [0002] Land reclamation is used for urban construction and industrial production, which effectively alleviates the contradiction between economic development and insufficient construction land. Therefore, a large number of land reclamation projects have been carried out in recent years. [0003] At present, vacuum preloading is generally used to strengthen the dredging silt foundation. Since the drainage pump is set above the dredging silt layer, and the vacuum membrane is in a vacuum state, the extracted water is only the dissipation of the ultra-static pore water stress caused by vacuum preloading. , the dredged fill sludge is still saturated, that is, the inside of the dredged fill sludge is in a vacuum state, ...

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Problems solved by technology

After the ultra-clean pore water pressure is completely dissipated, although the drainage pump can form a vacuum state, the vacuum membrane is also in a vacuum state, and the drainage pump is set above the dredging sludge layer, and the water in the dredging sludge cannot be discharged. The position cannot be lowered, the dredged fill silt is still in a saturated state, the preloading effect is not good, and the bearing capacity of the foundation is still low

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