Rapid flow guiding device and method suitable for water burst and sand inrush of sand bed
A water inflow and sand layer technology, applied in construction, geotextile, infrastructure engineering and other directions, can solve the problems of cumbersome process, limited back pressure capacity, water dispersion and diffusion, etc., to reduce secondary disasters, prevent secondary collapse, Good effect of back pressure
Active Publication Date: 2017-03-29
CCCC THIRD HARBOR ENG +1
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Problems solved by technology
[0005] 1. Quilts, sandbags, etc. rely on gravity back pressure, and the back pressure capacity is limited, so it is difficult to generate effective back pressure against large water and sand erosion
[0006] 2. The filter sand layer of the quilt has poor water permeability, and it is difficult to form drainage, which will cause water to disperse and spread, causing secondary disasters
[0007] 3. The quilt sandbag filling and back pressure process is complicated and cumbersome, which is not suitable for the characteristics of "every second counts" when the sand is gushing water and breaking the sand
[0008] 4. The grouting treatment process lacks grouting facilities after the traditional method back pressure, and the grouting treatment is difficult
Method used
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Embodiment
[0035] Embodiment: A kind of device that adapts to the rapid drainage of sand gushes and broken sand in the sand layer, its structure is as follows figure 1 with figure 2 As shown, it mainly includes a reverse filter inner membrane bag 1, a reverse filter outer membrane bag 2, a water stop membrane bag 6 and a water gushing drainage pipe 9. The upper part of the water gushing drainage pipe 9 has a water gushing drainage pipe 9, and the upper part of the water gushing drainage pipe 9 is wrapped by the reverse filter inner membrane bag 1, and the reverse filter inner membrane bag 1 is wrapped by the reverse filter outer membrane bag 2.
[0036] Both reverse filter inner membrane bag 1 and reverse filter outer membrane bag 2 are 450g / cm 2 filter geotextiles. The reverse filter inner membrane bag 1 has a built-in medium-coarse sand filter material with a particle size of 0.5 mm to 1 mm, and the reverse filter outer membrane bag 2 has a built-in coarse sand filter material with ...
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The invention related to a rapid flow guiding device and method suitable for water burst and sand inrush of a sand bed and belongs to the relevant technical field of construction of rock bodies, mines and tunnels. The rapid flow guiding device mainly comprises a water burst flow guiding pipe; the upper portion of the water burst flow guiding pipe is connected with inverse filtering film bags in a sealed mode, the middle portion of the water burst flow guiding pipe is connected with a water stopping film bag in a sealed mode, and a bag body of the water stopping bag communicates with a grouting pipe; a plurality of flow guiding holes are formed in the upper portion of the water burst flow guiding pipe, and the inverse filtering film bags comprises an inner inverse filtering bag connected with the water burst flow guiding pipe in a sealed mode and an outer inverse filtering bag arranged outside the inner inverse filtering bag in a coating mode; and the lower ends of the two inverse filtering bags are both clamped on the water burst flow guiding pipe by a buckle. According to the rapid flow guiding device, by designing a bran-new structure, while a water exit point can be efficiently reversely pressed by the rapid flow guiding device, water burst flow guiding can be guided, and sand can be synchronously filtered.
Description
technical field [0001] The invention relates to the related technical field of rock mass, mine and tunnel construction, in particular, relates to a device and method suitable for rapid drainage of sand inrush and sand inrush. Background technique [0002] Water gushing and sand breaking in the sand layer has always been one of the important threats to underground engineering construction. Due to its own characteristics, once water gushing and sand breaking occurs in the sand layer, a series of chain reactions will occur, such as buried tunnels, collapse of foundation pits, roof collapse of the road and collapse of surrounding buildings. And so on, especially in the process of urban subway construction, once the sand layer gushes out and breaks the sand, if it is not handled properly, it will easily lead to engineering disasters. [0003] The key point to solve the disaster of water gushing and sand breaking in the sand layer is to filter the water outlet point, which can not...
Claims
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IPC IPC(8): E02D19/16
CPCE02D19/16E02D2300/009
Inventor 陈剑王洪波魏义山张庆松刘人太朱光轩姜鹏
Owner CCCC THIRD HARBOR ENG