Rapid grouting and drainage device for water-emerging holes

Abstract

A rapid grouting and drainage device for a water gushing hole relates to a groundwater treatment technology for an engineering project. The device comprises a water gushing pipe composed of a plurality of water gushing solid pipe sections and a plurality of bladder body solid pipe sections, and a water gushing and filtering pipe with filter screens at both ends; the upper end pipe opening of the water gushing pipe is connected to a vacuum pump, and an expansion bag is fixed on the outer wall of the bladder body solid pipe section, and the cavities of adjacent expansion bags are interconnected through pipe fittings; a grouting pipe connected to a grouting device is arranged in the pipe cavity of the water gushing pipe, and a grouting one-way valve connected to the grouting pipe is arranged on the pipe wall of the water gushing pipe; the lower end pipe opening of the water gushing pipe is connected to the upper end pipe opening of the water gushing and filtering pipe; the water gushing and filtering pipe is formed by connecting a filter solid pipe section and a filter filter pipe section, a drill bit is fixed on the lower end of the filter filter pipe section, and a graded filter material layer is arranged on the outer wall of the water gushing and filtering pipe. The device provided by the present invention is used for blocking and draining water gushing holes in deep foundation pit excavation, and can realize rapid and centralized sand-free drainage of water gushing holes, and can also avoid the expansion of water gushing holes.

Description

Technical Field

[0001] The invention relates to engineering groundwater treatment technology, in particular to a rapid grouting and drainage device for a water bubbling hole. Background Art

[0002] During the excavation of deep foundation pits, water often seeps out from the walls of drilling holes, monitoring holes and precipitation wells due to inadequate early sealing measures, affecting project construction and may even cause foundation pit safety accidents. Some foundation pits also have water seepage points in local areas due to improper groundwater control.

[0003] At present, water precipitation, grouting, backfilling and other methods are usually used to comprehensively deal with water leakage points. However, for water leakage holes with large water flow, if the water level cannot be immediately and quickly lowered to the mouth of the water leakage hole, the conventional grouting plugging effect is not ideal, the slurry is wasted significantly, and it is difficult to respond quickly. If the backfill method is used, there is a problem of large backfill volume in high head areas, and the later treatment is difficult. If the drainage method is used, it is very easy to cause sand to come out of the drainage pipe and diversion and expansion of the water leakage point. Summary of the invention

[0004] In view of the defects existing in the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a rapid grouting and drainage device for water gushing holes which can realize rapid centralized sand-free drainage of water gushing holes and avoid the expansion of water gushing holes.

[0005] In order to solve the above technical problems, the present invention provides a rapid grouting and drainage device for a water bubbling hole, which includes a drainage pipe, a drainage filter pipe, a grouting device, a vacuum pump, and a pressure source output device capable of outputting high-pressure gas or high-pressure liquid;

[0006] The drain pipe is a solid pipe with a watertight wall. The upper end of the drain pipe is connected to the air extraction port of the vacuum pump through a pipe fitting. The drain pipe is divided into a plurality of drain solid pipe sections and a plurality of bladder solid pipe sections from top to bottom. The drain solid pipe sections and the bladder solid pipe sections are alternately distributed from top to bottom, and the solid pipe sections at the upper and lower ends of the drain pipe are both drain solid pipe sections.

[0007] The outer wall of the solid tube section of the bladder body is fixed with an expansion bag surrounding the tube wall, the bladder cavities of the upper and lower adjacent expansion bags are connected to each other through pipe fittings, and the first expansion bag is provided with a water-gas connecting pipe connected to its bladder cavity, and the upper end of the water-gas connecting pipe is connected to the pressure source output device;

[0008] A grouting pipe is arranged in the lumen of the drain pipe, a grouting one-way valve is arranged on the wall of the drain pipe, and the grouting one-way valve is arranged between the upper and lower adjacent expansion bags, the joint between the grouting one-way valve and the drain pipe wall is sealed, the grouting inlet of the grouting one-way valve is connected to the lower end of the grouting pipe, the grouting outlet of the grouting one-way valve is open to the outside of the drain pipe, and the upper end of the grouting pipe is connected to the grouting equipment;

[0009] The lower end of the drain pipe is connected to the upper end of the drain filter pipe, and the drain filter pipe is provided with a filter screen covering the upper and lower ends of the pipe openings;

[0010] The drainage filter pipe is formed by connecting a filter solid pipe section located on the upper side and a filter pipe section located on the lower side. A detachable drill bit is fixed to the lower end of the filter pipe section. The outer wall of the drainage filter pipe is provided with a graded filter material layer that at least covers the filter pipe section.

[0011] The rapid grouting and drainage device for water bubbling holes provided by the present invention utilizes an expansion bag to block the water bubbling holes, and combines the method of grouting outside the pipe to prevent the water in the hole from bubbling upward, and can limit the sand content of the outlet water through the graded filter material layer and the drainage reverse filter pipe, thereby realizing rapid and centralized sand-free drainage of the water bubbling holes, and at the same time preventing the water bubbling holes from expanding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 2 is a schematic structural diagram of a rapid grouting and drainage device for a water vent hole according to an embodiment of the present invention;

[0013] Figure 2 It is a schematic structural diagram of a water drainage and reverse filter pipe in a water grouting and drainage device for a water bubbling hole according to an embodiment of the present invention. DETAILED DESCRIPTION

[0014] The following is a further detailed description of an embodiment of the present invention in conjunction with the accompanying drawings, but this embodiment is not intended to limit the present invention. All similar structures and similar variations of the present invention should be included in the protection scope of the present invention. The commas in the present invention all represent the relationship of and.

[0015] like Figure 1-Figure 2 As shown, a rapid grouting and drainage device for a water bubbling hole provided in an embodiment of the present invention comprises a drainage pipe, a drainage filter pipe 22, a grouting device, a vacuum pump, and a pressure source output device capable of outputting high-pressure gas or high-pressure liquid;

[0016] The drain pipe is a solid pipe with a watertight wall. The upper end of the drain pipe is connected to the air extraction port of the vacuum pump through a pipe fitting. The drain pipe is divided into a plurality of drain solid pipe sections 211 and a plurality of bladder solid pipe sections 212 from top to bottom. The drain solid pipe sections 211 and the bladder solid pipe sections 212 are alternately distributed from top to bottom, and the solid pipe sections at the upper and lower ends of the drain pipe are both drain solid pipe sections 211.

[0017] The outer wall of the solid tube section 212 of the bladder body is fixed with an expansion bag 31 surrounding the tube wall. The bladder cavities of the upper and lower adjacent expansion bags 31 are connected to each other through a pipe 33. The first expansion bag 31 is provided with a water-gas connecting pipe 32 connected to its bladder cavity. The upper end of the water-gas connecting pipe 32 is connected to the pressure source output device.

[0018] A grouting pipe 41 is provided in the lumen of the drain pipe, a grouting one-way valve 42 is provided on the wall of the drain pipe, and the grouting one-way valve 42 is arranged between the upper and lower adjacent expansion bags 31, the joint between the grouting one-way valve 42 and the drain pipe wall is sealed, the grouting inlet of the grouting one-way valve 42 is connected to the lower end of the grouting pipe 41, the grouting outlet of the grouting one-way valve 42 is open to the outside of the drain pipe, and the upper end of the grouting pipe 41 is connected to the grouting equipment;

[0019] The lower end of the drain pipe is connected to the upper end of the drain filter pipe 22. The drain filter pipe 22 is provided with a filter screen 223 covering the upper and lower ends of the pipe.

[0020] The drainage filter pipe 22 is formed by connecting a filter solid pipe section 221 located on the upper side and a filter pipe section 222 located on the lower side. A detachable drill bit 1 is fixed to the lower end of the filter pipe section 222. The outer wall of the drainage filter pipe 22 is provided with a graded filter material layer 224 that at least covers the filter pipe section 222.

[0021] The method for blocking and draining a water hole quick grouting and draining device provided in an embodiment of the present invention comprises the following specific steps:

[0022] 1) Select a drill bit 1 that matches the soil layer and water-emerging hole at the water-emerging point and install it at the lower end of the filter pipe section 222 of the drainage filter pipe 22;

[0023] 2) Drill the drain pipe with the expansion bag 31 into the water bubbling hole to the target depth. The drain pipe can be protected by the drain filter pipe 22 and the drill bit 1 to avoid blockage.

[0024] 3) Start the pressure source output device, so that the high-pressure gas or high-pressure liquid output by the pressure source output device is injected into each expansion bag 31 through the water-gas connecting pipe 32, so that each expansion bag 31 expands to be in close contact with the wall of the water emitting hole, thereby blocking the water emitting hole to prevent the water in the hole from emitting upward, and then draining the emitting water in the hole to the drain filter pipe 22;

[0025] 4) Start the vacuum pump, so that the water bubbling around the drain filter pipe 22 is filtered by the graded filter layer 224 and the drain filter pipe 22 in turn under the action of negative pressure, and then enters the drain pipe, and then drains out through the drain pipe. The graded filter layer 224 and the drain filter pipe 22 can limit the sand content of the effluent, thereby avoiding the expansion of the water bubbling hole;

[0026] While the drain pipe is discharging water outward, the grouting equipment is started to inject grout, so that the slurry is injected into the gaps around the drain pipe through the grouting pipe 41 and the grouting one-way valve 42, filling the gaps around the drain pipe, thereby strengthening the plugging effect outside the drain pipe.

Claims

1. A rapid grouting and drainage device for a water hole, characterized in that: Including drainage pipes, drainage filter pipes, grouting equipment, vacuum pumps, and pressure source output equipment capable of outputting high-pressure gas or high-pressure liquid; The drain pipe is a solid pipe with a watertight wall. The upper end of the drain pipe is connected to the air extraction port of the vacuum pump through a pipe fitting. The drain pipe is divided into a plurality of drain solid pipe sections and a plurality of bladder solid pipe sections from top to bottom. The drain solid pipe sections and the bladder solid pipe sections are alternately distributed from top to bottom, and the solid pipe sections at the upper and lower ends of the drain pipe are both drain solid pipe sections. The outer wall of the solid tube section of the bladder body is fixed with an expansion bag surrounding the tube wall, the bladder cavities of the upper and lower adjacent expansion bags are connected to each other through pipe fittings, and the first expansion bag is provided with a water-gas connecting pipe connected to its bladder cavity, and the upper end of the water-gas connecting pipe is connected to the pressure source output device; A grouting pipe is arranged in the lumen of the drain pipe, a grouting one-way valve is arranged on the wall of the drain pipe, and the grouting one-way valve is arranged between the upper and lower adjacent expansion bags, the joint between the grouting one-way valve and the drain pipe wall is sealed, the grouting inlet of the grouting one-way valve is connected to the lower end of the grouting pipe, the grouting outlet of the grouting one-way valve is open to the outside of the drain pipe, and the upper end of the grouting pipe is connected to the grouting equipment; The lower end of the drain pipe is connected to the upper end of the drain filter pipe, and the drain filter pipe is provided with a filter screen covering the upper and lower ends of the pipe openings; The drainage filter pipe is formed by connecting a filter solid pipe section located on the upper side and a filter pipe section located on the lower side. A detachable drill bit is fixed to the lower end of the filter pipe section. The outer wall of the drainage filter pipe is provided with a graded filter material layer that at least covers the filter pipe section.

Images