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Ultrahigh pressure bursting underground flowing water split-flow pressure reduced treatment

A processing method and sudden technology, applied in construction, infrastructure engineering and other directions, can solve the problems of long construction period, high risk, groundwater gushing, etc., and achieve the effect of reducing construction difficulty, reducing construction risk, and shortening construction period

Active Publication Date: 2005-05-11
POWERCHINA HUADONG ENG COPORATION LTD
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Problems solved by technology

[0004] However, in engineering practice, due to the limitation of forecasting methods, it is difficult to accurately predict the specific exposure position of groundwater, which often results in the sudden gushing of groundwater during construction.
For the sudden gushing of ultra-high pressure groundwater, there are still no effective countermeasures in construction at present, and direct sealing is usually used to deal with it. The construction technology is difficult and risky, and the cost of effective sealing is high. Takes a long processing time

Method used

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  • Ultrahigh pressure bursting underground flowing water split-flow pressure reduced treatment
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  • Ultrahigh pressure bursting underground flowing water split-flow pressure reduced treatment

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Embodiment Construction

[0023] As shown in Figures 1-5, it can be seen from the figure that the position of the gushing point 1 in this embodiment is on the secondary structure 3 of the water outlet, and the secondary structure of the water outlet is adjacent to and intersects with the main structure 2 of the water outlet, and the hole has been dug Segment 4 encountered gushing point 1 when it was dug to the water outlet structure 3. The gushing point is the sudden gushing of ultra-high pressure groundwater, and its water head is often hundreds of meters or even thousands of meters. If it is treated by direct sealing, The construction technology is difficult and risky, the cost of effective sealing is high, and the treatment period is long. However, the present invention adopts the treatment method of shunting and decompression, and the general treatment time is about one week to half a month, which will greatly shorten the construction period, reduce the difficulty of engineering treatment constructi...

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Abstract

A pressure-decreasing shunt method for treating the accident ultrahigh-pressure underground water spray-out includes such steps as drilling holes near the spraying point to decrease the flow and pressure of spray, installing the enclosing unit in each hole, blocking spray point when the flow and pressure are decreased to a certain value, enclosing the holes one by one, drilling the grouting holes near the spray point, and pouring grout in the holes.

Description

technical field [0001] The invention relates to a diversion and decompression treatment method for ultra-high pressure sudden underground gushing water. It is suitable for underground engineering in water conservancy and hydropower engineering and transportation engineering. Background technique [0002] The buried depth of underground projects in water conservancy, hydropower and transportation development projects is increasing, and the groundwater pressure encountered by these underground projects is often hundreds of meters or even thousands of meters of water head. Due to the large range of groundwater recharge and long attenuation period, on the one hand, the discharge of groundwater will have adverse effects on the surrounding hydrogeological environment, and on the other hand, it will bring great difficulties to the construction of the project. [0003] At present, the usual practice is to carry out advanced geological prediction of groundwater, pre-grouting treatme...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/12
Inventor 张春生周垂一
Owner POWERCHINA HUADONG ENG COPORATION LTD
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