Method and device for eliminating water burst,shifting sand danger of underground building curtain
A technology for underground buildings and curtains, which is applied in quicksand dangers and eliminates the defects of underground building curtains and water gushing. It can solve problems such as unusable, unsatisfactory effects, and heavy equipment, so as to avoid direct contact, insufficient grouting or overpressure grouting. Effect
Inactive Publication Date: 2012-09-12
高振伟 +1
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Problems solved by technology
[0006] It takes too long, time-consuming and labor-intensive to do so, and the effect is often unsatisfactory
In addition, the equipment for rotary grouting piles and "double liquid" grouting is relatively bulky and bulky, and is often unusable due to the restrictions of the surrounding environment.
Method used
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[0091] The underground construction curtain of a key project, the ground wall curtain, the excavation elevation is -29m. When digging to 25m, the danger of water gushing and quicksand appeared. First, the traditional method was used to drill holes outside the ground connecting wall, and the "dual liquid" grouting method of ordinary cement and water glass was used to seal it. After three days and three nights, the leakage could not be blocked. The situation is very critical.
[0092] Then, the method and equipment of the present invention are used for rescue.
[0093] 1. Punching and buried pipe:
[0094] At the excavated part 3 of the underground construction curtain 1, select a location about 2m away from the defect part 2 of the underground construction curtain where water and quicksand is gushing, and drill holes into the underground construction curtain 1 about 3m, and the underground construction curtain 1 itself has a thickness of 1.2m , Open a total of two holes, the angle b...
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The invention provides a method for eliminating underground building curtain water burst and quick sand, and relates to an underground building construction method and a supporting device. The supporting device can be used for directly blocking defects such as underground building curtain water burst and quick sand, and has the advantages that the operation is simple, convenient and easy, no backfilling soil is required, the reliability is high, the accuracy is high, the construction time is saved and the risk is minimized. A defect part or position close to the defect of an underground building curtain, i.e. a position close to a flow eroded hole is selected on one side of the excavated part of the underground building curtain; two boreholes are drilled at the selected position; a grouting system formed by an air compressor, four grouting tanks, two grouting three-way pipes, two control throttle assemblies and two grouting pipes; nano waterproof cement slurry and water glass slurry are respectively grouted through a grouting system A and a grouting system B; the nano waterproof cement slurry and the water glass slurry are grouted from a direction opposite to the direction of water burst and quick sand, the nano waterproof cement slurry and the water glass slurry are quickly solidified after being mixed, a solidified body is piled and gathered in the defect, and finally, the defect part with water burst and quick sand is blocked.
Description
Technical field: [0001] The invention relates to an underground building construction method and associated equipment. In particular, it is a method and equipment for eliminating water gushing and quicksand dangers of curtain defects in underground buildings. Background technique: [0002] In the field of construction, the development and utilization of underground space has become popular. [0003] In areas with abundant groundwater, in order to meet the needs of construction, we must first build an underground construction curtain around the excavation pit. After the underground construction curtain is completed, excavation can be carried out, so as to clear the space of the underground project and ensure the completion of the main building. [0004] There are many types of underground building curtains, such as ground connecting wall and pile wall. Because these underground building curtains are all completed by related mechanical equipment in an invisible underground, it is ea...
Claims
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IPC IPC(8): E02D37/00E02D29/02
Inventor 王权平朱琳王静平高子淞高鑫司亚林向楠高振伟高振丽王镇生
Owner 高振伟