Quick Drainage Method of Shallow Soil Mass in Proposed Backfilling Foundation
A drainage method and soil technology, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of low drainage efficiency and long time, and achieve the effect of good sealing effect, fast speed and low cost
Active Publication Date: 2018-12-28
CABR FOUND ENG CO LTD
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Problems solved by technology
[0003] The first step of traditional foundation treatment is to level the site, and then excavate drainage ditches around the area to be reinforced for drainage; for some sites with complex working conditions, the natural drainage efficiency of simple excavation of drainage ditches is too long due to the long drainage path too long
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Embodiment 1
[0051] The site to be treated is to be dredged and filled with 8-meter-thick dredged fill with high water content
[0052] Step 1. Lay yellow sand or gravel water filter materials with a thickness of 5 cm and a width of 30 cm on the surface at a distance of 15 meters along the short side of the reinforcement area;
[0053] Step 2. Lay a horizontal drainage board on the sand filter material. The distance from the right end of the length direction to the edge of the filling area is not less than 3 meters to ensure that the right end of the drainage board does not leak air, and the distance from the left end to the left edge of the filling area is not less than 5 meters. laying section;
[0054] Step 3: Connect the 5.1m well-point pipe to the left end of the drainage board with a variable diameter joint to form an integrated well-point plastic pipe. The head of the well-point pipe is exposed to the reinforced area for about 10cm to facilitate the connection to the vacuum pump. Th...
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The invention relates to a proposed-backfill foundation shallow soil layer rapid water draining method. The method is characterized by comprising following steps: firstly, a water filtering material is laid on the earth surface; a horizontally-arranged water draining plate is laid on the water filtering material; one end of the water draining plate is in sealed connection with wellpoint tubes through reducing joints to form an integrated wellpoint plastic tube bank, the heads of the wellpoint tubes are exposed out of a reinforcing area, and the wellpoint tubes and the water draining plate are arranged in a straight-line manner in the horizontal direction; the water filtering material is laid on the surface of the water draining plate, and backfill construction or blow-fill construction is carried out; the above steps are repeated and matched with backfill or blow-fill construction to be synchronously and repeatedly carried out in a layered manner; and finally, the unearthing segment of the integrated wellpoint plastic tube bank is connected with a vacuumizing main pipe through a connecting pipe, the vacuumizing main pipe is connected with a vacuum pump to begin to carry out vacuumizing, and rapid water draining of the shallow soil is achieved. The method has the beneficial effects of being easy to operate, low in cost and good in construction effect.
Description
technical field [0001] The invention relates to a method for treating weak ground, in particular to a method for quickly draining shallow soil of a quasi-backfilled ground. Background technique [0002] According to 7.1.1 of the "Code for Design of Building Foundations" (GB5007-2011), weak foundations refer to foundations mainly composed of silt, muddy soil, flushing soil, miscellaneous filling soil or other highly compressive soil layers. Before building construction on weak ground, it is necessary to consolidate the weak ground first. [0003] The first step of traditional foundation treatment is to level the site, and then excavate drainage ditches around the area to be reinforced for drainage; for some sites with complex working conditions, the natural drainage efficiency of simple excavation of drainage ditches is too long due to the long drainage path too long. Contents of the invention [0004] The object of the present invention is to overcome the above-mentioned...
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IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 张禹
Owner CABR FOUND ENG CO LTD