Sudden-surging-prevention water pressure control method used for underground engineering

A control method and underground engineering technology, applied in infrastructure engineering, protective devices, buildings, etc., can solve problems such as difficulties, inconvenient construction, groundwater gushing, etc., and achieve the effect of stable anti-floating water level and reliable water stop

Active Publication Date: 2016-07-27
SHANGHAI CHANGKAI GEOTECHN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when opening drainage wells or drainage holes on the foundation floor of the basement, a large amount of groundwater will spurt due to the need to drill through the foundation floor. Construction caused great inconvenience and difficulty

Method used

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  • Sudden-surging-prevention water pressure control method used for underground engineering
  • Sudden-surging-prevention water pressure control method used for underground engineering
  • Sudden-surging-prevention water pressure control method used for underground engineering

Examples

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Effect test

Embodiment 1

[0024] Such as figure 1 , 2 As shown in , 3, in order to overcome the situation that the water pressure of the underground engineering is greater than the self-weight of the structure and in the process of opening the drain hole in the existing basement, a large amount of groundwater gushes out due to drilling through the foundation floor, this embodiment provides a The anti-inrush water pressure control method for underground engineering, the water pressure control method specifically includes the following steps:

[0025] (1) First of all, a groove 2 is set on the foundation floor 1 in the basement, and the groove 2 changes from large to small in a two-stage stepped shape. It should be noted that the groove 2 does not drill through the foundation floor 1. A base plate with a certain thickness is reserved on the foundation base plate 1 to prevent groundwater from gushing out in the lower soil layer 10, and the opening depth of the groove 2 accounts for 1 / 2-3 / 4 of the thickne...

Embodiment 2

[0036] Such as figure 1 , 2 , 4, the present embodiment specifically relates to an anti-surge water pressure control method for underground engineering, which specifically includes the following steps:

[0037](1) First, select a number of locations on the foundation floor 1 in the basement to open grooves 2. The grooves 2 change from large to small in a two-stage stepped shape. It should be noted that the grooves 2 do not drill through the foundation Bottom plate 1, a bottom plate with a certain thickness is reserved on the foundation bottom plate 1 to prevent groundwater from gushing out in the lower soil layer 10, and the opening depth of the groove 2 accounts for 1 / 2-3 / 4 of the thickness of the foundation bottom plate 1;

[0038] (2) Afterwards, select a bushing 3 with switch valve 4, insert the lower port of the bushing 3 into the bottom of the groove 2, but do not pass through the base plate 1; 3 is fixedly connected with the groove 2, that is, one side plate of the an...

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Abstract

The invention discloses a sudden-surging-prevention water pressure control method used for underground engineering. The sudden-surging-prevention water pressure control method is characterized by including the following steps that a casing pipe with a switch valve is vertically arranged on a foundation bottom plate and fixed, a water discharge hole penetrating the foundation bottom plate to a soil body below is constructed in the casing pipe, and the switch valve is switched off; and a lower port of the casing pipe is connected with the water discharge hole, and an upper port of the casing pipe is connected with a water pressure control pipeline. The sudden-surging-prevention water pressure control method has the beneficial effects that by forming the hole in the casing pipe with the switch valve, sudden surging of underground water is prevented from happening after the foundation bottom plate is drilled through; and by discharging water and reducing pressure through the water pressure control pipeline, the size of an underground water head below the foundation bottom plate can be effectively controlled, and it is ensured that the basement foundation bottom plate is stable in anti-floating water level, capable of discharging water without making sand flow, and reliable in water stopping.

Description

technical field [0001] The invention belongs to the technical field of underground engineering, and in particular relates to an anti-inrush water pressure control method for underground engineering. Background technique [0002] Due to the influence of groundwater, the water pressure is too high, and underground engineering often involves the problem of anti-floating. In engineering, anti-floating is generally achieved by setting anti-floating piles or anchor rods, and increasing counterweights. However, due to the failure of uplift piles or anchor rods, or the lack of safety reserves in anti-floating design, the load on the upper structure cannot be fully applied, and some projects experience water pressure greater than the self-weight of the structure. Cracks, etc., seriously affect the safety and normal use of the underground engineering itself. [0003] After the above problems occur, effective water pressure treatment measures must be taken. Due to the tight arrangemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D31/12
CPCE02D31/12
Inventor 顾国荣郭星宇杨砚宗王克文陈晖
Owner SHANGHAI CHANGKAI GEOTECHN ENG
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