A method for grouting and water-stopping of loofah pulp in hydrodynamic karst tubular fissures
A loofah pulp and karst technology, which is applied in the field of hydrodynamic karst tubular fissure loofah pulp grouting and water-stopping, can solve the problems of lack of effective, convenient and economical methods, etc., and achieve abundant output, good grouting and water-stopping effect, and low price Effect
Active Publication Date: 2017-07-28
TONGJI UNIV
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Problems solved by technology
Therefore, in the karst dynamic water environment, there is still a lack of an effective, convenient and economical method for grouting to improve the grouting effect.
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[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation 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 water-stopping of loofah pulp in hydrodynamic karst tubular fissures comprises the following steps:
[0027] 1) A plurality of grouting nozzles 9 and a plurality of loofahs 8 are arranged on the wall of the karst tubular fissure under dynamic water conditions, and the loofahs 8 are moistened with water 4, and then the grouting nozzles 9 are inserted into the loofahs 8 internal;
[0028] 2) The grouting pump 1 injects cement slurry 2 into the grouting nozzle 9 through the grouting pipeline 15. After the cement slurry 2 slowl...
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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 technical field of construction, in particular to a method for grouting and water-stopping loofah pulp in hydrodynamic karst tubular fissures. Background technique [0002] At present, in karst-developed areas, domestic and foreign grouting reinforcement technologies mainly use sleeve valve pipe grouting method, high-pressure rotary spraying method or riprap sand-filling method. The grouting material is mainly cement slurry and a combination of cement slurry and some additives. Due to the complexity of karst distribution in karst areas and the existence of groundwater in karst caves, the grouting effect is not ideal, so it is necessary to increase the amount of grouting, and the economy is poor. In terms of cement slurry for grouting, domestic and foreign scholars have studied the addition of certain additives to improve the fluidity of the cement slurry and speed up the solidification time, but the effect is still flawed ...
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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