Method for stopping water in karstic tubular fractures in flowing water condition through loofah sponges and grouting

A loofah pulp and karst technology, which is applied in the field of hydrodynamic karst tubular fissure loofah pulp grouting and water stop, can solve the problems of lack of effective, convenient and economical methods, etc., and achieve the effect of abundant yield, obvious effect and good cementation effect

Active Publication Date: 2016-03-23
TONGJI UNIV
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Problems solved by technology

Therefore, in the karst dynamic water environment, there is still a lack of an effe

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  • Method for stopping water in karstic tubular fractures in flowing water condition through loofah sponges and grouting
  • Method for stopping water in karstic tubular fractures in flowing water condition through loofah sponges and grouting

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[0025] The present invention will be described in detail below with reference to the drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation mode and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0026] Such as figure 1 As shown, a method for grouting and stopping water from loofah flesh in a tubular fissure in a dynamic water karst karst area includes the following steps:

[0027] 1) A plurality of grouting nozzles 9 and a plurality of loofah flesh 8 are set on the pipe wall of a karst tubular fissure under dynamic water conditions, and the loofah flesh 8 is moistened with water 4, and then the grouting nozzle 9 is inserted into the loofah flesh 8 internal;

[0028] 2) The grouting pump 1 injects the cement slurry 2 into the grouting nozzle 9 through the grouting pipe 15. After the cement ...

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Abstract

The invention relates to a method for stopping water in karstic tubular fractures in flowing water condition through loofah sponges and grouting. The method comprises the following steps that (1) a plurality of grouting pipe nozzles and the multiple loofah sponges are arranged in karstic tubular fractures in the water flowing condition, and the grouting pipe nozzles are inserted into the loofah sponges; (2) cement slurry is injected into the grouting pipe nozzles through a grouting pump, the injecting pressure is increased after the cement slurry slowly enters the loofah sponges and the loofah sponges are filled with the cement slurry, and the loofah sponges at the grouting pipe nozzles are washed into the pipe centers of the karstic tubular fractures to make the loofah sponges be combined with the interiors of the karstic tubular fractures with injected cement slurry; and (3), cement is stopped from being injected when water cannot flow out of the karstic tubular fractures any longer. The method can be rapidly applied in the water flowing environment, the work amount is small, the cost is low and the reinforcement effect is good.

Description

Technical field [0001] The invention relates to the field of construction technology, in particular to a method for grouting and stopping water from loofah pulp in a dynamic water karst tubular fissure. Background technique [0002] At present, in karst areas, the grouting reinforcement technology at home and abroad mainly adopts sleeve valve tube grouting, high-pressure jet grouting or sand filling method. The grouting material is mainly cement slurry, and the combination of cement slurry and some additives. Due to the complexity of karst distribution in karst areas and the presence of groundwater in karst caves, the grouting effect is not ideal, so the grouting volume needs to be increased, which is economical. Regarding the grouting cement slurry, domestic and foreign scholars have studied the use of certain additives to improve the fluidity of the cement slurry and speed up the setting time, but the effect is still flawed in the dynamic water environment. Therefore, in the ...

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Application Information

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IPC IPC(8): E02D3/12E02D15/00
CPCE02D3/12E02D15/00
Inventor 杨坪周飞棚高书文宋立
Owner TONGJI UNIV
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