Air jet head for vacuum precompression air splitting system
An air jet head and air pressure technology, applied in soil protection, construction, infrastructure engineering, etc., can solve problems such as soft soil blockage of pipes, poor reinforcement effect, and drainage board silting, so as to reduce project cost, facilitate installation, pay attention to The effect of increasing the air radiation range
Active Publication Date: 2019-02-15
TIANJIN UNIV
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Problems solved by technology
[0006] (1) In terms of work performance: the single-hole pipe gas injection method only produces a certain effect locally, and it is difficult to have an impact in a large range. The soft soil is clogged, resulting in the inability to inject gas, the reinforcement effect is poor, and the problem of drainage board silting still cannot be solved well
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Embodiment Construction
[0016] The present invention will be described below in conjunction with the accompanying drawings and embodiments.
[0017] see figure 1 and figure 2 , the present invention provides a spray head for vacuum preloading air splitting system, which specifically includes a spray head main body 1, a conversion joint 2, and a gas injection pipe 3. When the vacuum preloading method is used to treat deep soft ground 1 is connected with the conversion joint 2 to form the nozzle as a whole. The nozzle 1 has a cavity 4 with a diameter of 10mm, and then it is connected with the gas injection pipe 3; , The front portion of the bolt rod 5 is fixedly connected with a baffle plate (not shown in the figure), so as to achieve the purpose of the baffle plate clamping the gas injection pipe 3.
[0018] Due to the simplicity of the structure and the standard versatility of all components, the air pressure splitting effect and other mechanical effects of the device can be easily analyzed and de...
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The invention provides a gas spraying head for a vacuum pre-loading gas pressure splitting system. The gas spraying head comprises a gas spraying head main body 1 and a switching joint 2 for connecting the main body 1 to a gas injection pipe 3, wherein the front end of the gas spraying head main body 1 is conical; holes 4 are distributed in the gas spraying head main body 1; the switching joint 2 is flatly cylindrical, and a through hole through which the gas injection pipe 3 passes is formed in the middle of the switching joint 2; a plurality of circular holes are formed in the peripheral edge of the side surface of the switching joint 2; bolt rods 5 pass through the circular holes; and the front end of each bolt rod 5 is fixedly connected with a barrier plate. The gas spraying head has the advantage of high efficiency.
Description
technical field [0001] The invention relates to an air jet head for a vacuum pre-compressed gas splitting system. Background technique [0002] The strengthening effect of the vacuum preloading method on soft soil foundation mainly depends on the vacuum degree under the vacuum membrane and the distribution law of the negative pressure in the vertical drainage system. Affected by well resistance, the negative pore pressure of the vertical drainage system has a certain attenuation along the depth direction. Many experts have done a lot of experimental research on the reinforcement depth. Li Xiaohe (2002) proposed that at the depth of 22m, the soft soil foundation The settlement is almost zero, and there is no settlement change below the depth of 17m; Wei Bo (2003) compared and analyzed the soil samples before and after the soft soil foundation was treated with vacuum-surcharge combined preloading on the Yong-Tai-Wen Expressway. The internal reinforcement effect is obvious, an...
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IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 雷华阳王铁英冯双喜祁子洋
Owner TIANJIN UNIV