KR200371274Y1 - Grouting &Pumplng pipe for Small groundwater well - Google Patents

Abstract

The present invention relates to a grouting combined pump for small-diameter groundwater deepwater for curing concrete in the inner wall of the heart well so that contaminated surface water does not flow into the heart well excavated to the ground. Corrugated pipes 14 are formed at certain lengths so that they can be inserted and installed in the drilling holes for each well, and expansion tubes 16 are shielded between the inner walls of the holes in the grouting pipes in which the leaf springs 17 are installed at predetermined lengths. Since the grouting pipe can be inserted to the required depth even when the excavation hole is curved, the grouting reliability is improved, and the shielding is made by the expansion tube 16 to contaminate groundwater or rock groundwater. The effect of performing perfect grouting without blocking the vein of (13) is provided. And it relates to a grouting (Grouting & Pumplng pipe for Small groundwater well) a small-diameter pipes for grouting combined positive feelings groundwater to be used directly as a pipe pumping pipe.

Description

Grouting combined pumping device for small-diameter groundwater deep well {Grouting & Pumplng pipe for Small groundwater well}

The present invention is to grout the small diameter groundwater deepwater grouting, which allows the grouting pipe to serve as a pumping pipe while curing concrete in the inner wall of the core to prevent the inflow of contaminated surface water into the small diameter deepwater excavated underground to collect groundwater. A grouting combined pump, particularly a grouting combined pump for small diameter groundwater, which can be easily inserted to a planned depth and has a uniform grouting thickness.

As industrialization progresses in modern times, environmental pollution is intensifying and interest in clean drinking water is increasing. Therefore, in recent years, researches on devices for purifying tap water or surface water and devices for developing uncontaminated groundwater have been intensified.

In the large-diameter cardiac well, a groundwater collecting device generally preferred is a large-diameter installed to prevent the collapse of the weathered rock layer 10 after excavating the rock of the surface to the rock layer 11 by using a filter of a predetermined thickness as shown in FIG. 1. It is installed to prevent the inflow of surface water 12 after excavation of the outcasing (1) and the outcasing (1) and then excavating the rock bed layer 11 again to penetrate the water vein of the groundwater 13. Pipe for strainer (strainer) is installed to prevent the inflow of soil or foreign matter of the ground water 13 and to maintain a proper flow rate at the location of the encasing (2) and the ground water (13) in the lower part of the casing (2) (3) and the concrete (4) injected and cured so as to prevent the inflow of foreign substances such as surface water 12 into the space between the encasing (2) and the groundwater core inner wall, and installed inside the encasing (2) The heart pump (5), It is installed to be connected to the heart pump (5) and consists of a pumping pipe (6) to move the ground water 13 is pumped by the heart pump (5).

The cardiac well pump 5 is heat-set by the upper level sensor 7 and the lower level sensor 8 provided in the pumping pipe 6.

In addition, the encasing (2) is provided with a water level monitoring rod (9) capable of monitoring the level of the groundwater to a certain depth.

Conventionally, in order to meet a contracted amount by collecting a large amount of groundwater, the insertion depth of the out casing 1, which is to be pushed up to a part of the rock layer 11, is often pushed only to the middle of the weathered rock layer 11, and even out casing. In some cases, a perforation was formed in (1) to deliberately induce surface water (12) .In case of grouting (2), not only a large number of groundwater cores have been constructed, but also some casings In the case where the core (2) is embedded, the grouting construction to prevent the inflow of the surface water (12) is often not carried out. Therefore, the surface water (12) flows into the groundwater core well without any obstacle and is mixed with the clean rock ground water. Many cases of spreading the contamination of (13) have occurred.

In addition, the most conventional method is to simply drive the encasing (2) without grouting the existing groundwater wells. This can only be limited due to the curved depth of the encasing (2) is embedded and can not fundamentally prevent contamination due to the inflow of surface water (12).

In addition, the conventional method as a grouting construction method for preventing the inflow of surface water, the excavation of the large diameter that can be inserted into the outer casing (11) to the upper surface of the rock layer 11 in the process of excavation to pump the groundwater (13) Then, after inserting the out casing (1), the concrete (4) is injected into the interior of the curing, and excavation hole of a small diameter for drilling the in casing (2) again until reaching the groundwater (13) vein Then, the method of installing the encasing (2).

However, in this method, grouting must be carried out in a state where the amount of water is not accurately confirmed. Therefore, the initial drilling cost is excessively increased, and when the contract amount of water cannot be secured, the grouting is completed and the existing casing is embedded in the encasing (2) As the waste air treatment has to be disposed, there is a problem in that it is uneconomical in terms of cost of the contractor and consequently incurred excessive construction cost in terms of the client.

And, in order to solve the above problems, excavation to the beginning of the rock layer (11), and then insert the outcasing (1) and then replace the excavation bit (bit) with a small diameter to replace the casing (2) In the state of excavation to the water vein of the groundwater 13 so as to drive the in casing (2), and the concrete (4) is injected into the gap between the casing (2) and the inner wall of the excavation hole to cure the surface water (12) There is a way to block inflows. However, this method is also difficult to inject the concrete (4) from the bottom in the process of injecting the concrete (4), even if it is injected from the bottom to completely block the gap between the casing (2) and the inner wall of the excavation hole Due to the inability to prevent the concrete 4 from leaking into the groundwater core, the groundwater 13 cannot be contaminated. In addition, even when the concrete (4) is injected from the top, in the gap between the casing (2) and the inner wall of the groundwater core as narrow as 50 ~ 60mm due to the characteristic of the concrete (4) due to the bridge phenomenon at the intermediate depth of the concrete (4) is not completely filled and the grouting effect cannot be exerted properly, and the concrete (4) is infused (2) and groundwater by injecting the concrete (4) while the level of the groundwater (13) is raised. Mixing and diluting with the groundwater 13 existing between the inner wall of the core was impossible to cure the concrete (4) or difficult to obtain the appropriate strength. Therefore, when water quality is important, there is a problem in that a large additional construction cost or secondary grouting construction is impossible by rebuilding grouting as a secondary tertiary.

After the amount of water in the appropriate groundwater 13 is confirmed, another method of constructing grout is sand from the bottom to a predetermined height at a depth at which the vein of the groundwater 13 is identified in the rock layer 11 of the pre-excavated groundwater core. Filling, shielding with mud lumps or wooden boards to keep the shielding in water, and then injecting and curing the concrete 4 from the upper part, and then excavating to the position of the mud lumps or wood boards as described above, The sand is discharged to the outside through a surging cleaning process in which compressed air is blown, and the encasing (2) is driven.

However, this method is also impossible to use if the center of gravity with the excavated drilling hole is not available, and development loss occurs. If the material installed for the shielding does not perform its role properly, the concrete to the groundwater (13) veins (4) is injected there is a problem that the amount of water is drastically reduced because the water vein is blocked.

And, even if there exists a method of overcoming the above-mentioned problem, the method according to the prior art, when excavating the excavation hole by using a landing gear, to reach the rock layer layer 11 of the components of the rock layer 11 Differences and extension pipes of the gearing machine are small in diameter and consequently the excavation holes are curved to some extent so that they do not maintain a straight axis, so the straight encasing (2) with large diameters is curved. Since the grouting solution is prevented from getting stuck to the required depth and the grouting solution flows downward in the process of injecting the grouting solution, the grouting is not performed properly. Since the airtight reliability of the shielding means for shielding is not secured, Since the airtight reliability of the shielding means is not secured, concrete enters the water vein of the groundwater and contaminates the groundwater 13 or reduces the amount of water collected in the groundwater 13.

However, all of these grouting methods are limited to large-diameter groundwater wells. For groundwater used in farming and fishing villages, farms, and other small buildings, small-diameter groundwater wells within 50 millimeters are generally developed. In the case of Shimjung, the lack of proper grouting methods and devices did not cause problems when the groundwater was developed.

The present invention has been devised to solve the above problems of the prior art, a small diameter groundwater deepwater grouting combined pumping can be more economically and easily and reliably implemented for the blockage of surface water after excavation of small diameter groundwater wells The purpose is to provide a pipe.

1 is a schematic cross-sectional view of a general groundwater collection device,

Figure 2 is a cross-sectional view of the combined grouting pump device according to the present invention,

Figure 3 is a cross-sectional view of the expansion tube installation site according to the present invention.

<Explanation of code about main part of drawing>

1: out casing 5: heart pump 6: pumping pipe

9: water level monitoring rod 14: corrugated pipe 15: grouting combined pump

16 expansion tube 18 cover plate 19 compressed fluid injection hose

22: pump pump 25: connection accessories 26: screw connection

28: filter barrel 30: reverse injection pipe 31: flow control valve

34: discharge valve 35: pressure compensating piping

36: filter cylinder check valve 37: branch tee

The present invention is to create a shielding wall installed in an excavation hole to prevent the inflow of surface water contaminated in the small-diameter groundwater core, and to the small-diameter groundwater deep-grouting double-use pump for allowing the grouting pipe used at this time to be used as a positive pipe. In

The combined grouting pump may be a grouting pipe having a corrugated pipe formed at a predetermined length so as to be inserted along a curved drill hole, and a gap between the inner wall of the drill hole and the encasing is shielded under the grouting pipe pump. It is configured to include an expansion tube to be installed, characterized in that by attaching a pipe attachment for connection at the top.

In addition, when the groundwater pump is operated, the suction pipe is generally formed in the absence of air that is sucked into the grouting combined pump, so that the groundwater pump needs excessive suction pump, resulting in a decrease in pumping capacity. In order to compensate for this, a pressure compensation equalization pipe with a small diameter inside the grouting double pump is installed, and the upper end is fixed by connecting a socket to a pipe attachment installed to connect with the groundwater pump. The filter can be fitted to prevent the infiltration of polluted water and contamination surface water. The lower part of the small diameter equalization pipe is characterized in that it is lowered as close as possible to the bottom of the groundwater core.

Here, the grouting combined pump pump is characterized in that the leaf spring is installed to guide the insertion and to maintain a constant gap between the inner wall of the excavation hole and the casing.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

First, referring to the drawings, Figure 2 is a cross-sectional view of the grouting combined pumping pipe apparatus according to the present invention, Figure 3 is a cross-sectional view of the expansion tube installation site according to the present invention.

The groundwater water collecting device employing the groundwater deep grouting pumping pipe grouting pipe device according to the present invention has an outcasing (1) installed through the weathered rock layer (10) and the rock layer (11) from the surface as shown, and the weathered rock layer. It is installed to the groundwater near the groundwater so that the contaminated surface water 12 does not flow in the inside of the excavation hole formed through the 10 and the rock layer 11, and is inserted into the curved excavation hole every predetermined length. Grouting combined pumping pipe (15) having a corrugated pipe (14) formed, plate spring (17) installed to maintain a predetermined gap between the excavation hole and the grouting combined pumping pipe (15), and the outer periphery of the lower end of the grouting combined pumping pipe (15) The expansion tube 16 seated on the inside of the combined grouting pump 15 from the ground to supply compressed fluid to the expansion tube 16. Is a compression fluid injection hose 19 connected to the expansion tube 16 through the outside, and a cover installed on the upper portion of the expansion tube 16 to protect the expansion tube 16 from grouting concrete. Plate 18 and the injection tube is installed between the grouting combined pump pipe 15 and the gap of the drill hole from the ground so that the grouting concrete is injected into the gap between the grouting combined pump pipe 15 and the drilling hole do.

The leaf spring (17) is installed on the outer periphery of the grouting double pump (15) so as to maintain a constant gap between the grouting double pump (15) and the inner wall of the excavation hole, but the leaf spring (17) is largely rounded outward The bottom side was fixedly attached and the top side was not fixed to be freely moved.

In order to extend the grouting combined pump pipe 15, the screw coupling part 26 is used, but the shape of the screw has a round screw shape for ease of coupling.

Grouting combined pumping pipe (15) at the top of the pumping pipe connecting device (25) for attaching the grouting combined pump to be installed directly on the ground pump (22).

In addition, a separate female screw was processed on the upper end of the connection attachment device 25 to install the pressure compensating pressure equalizing pipe 35 in the grouting double pump pipe 15. When the pressure compensating pressure equalizing pipe 35 is made of a material of a hose, the weight 33 is easily installed at the bottom of the pressure compensating pressure equalizing pipe 35. In the upper part of the pressure compensating pressure equalizing pipe (35), a filter cylinder (28) having a check valve (36) installed at the lower part is installed so that when the air flows into the pressure compensating pressure equalizing pipe (35), the contaminated material is inside the heart. The reverse injection pipe 30 connected at the discharge side of the pump pump 22 was installed between the check valve 36 and the connecting attachment device 25 by installing a flow rate control valve 31.

Construction method using a small diameter groundwater core grouting combined pump pipe according to the present invention configured as described above, first excavating a part of the weathered rock layer 10 and the rock layer 11 using a large diameter drilling bit, The out casing 1 is installed on the inner wall of the excavation hole so as to prevent burial of the excavation hole.

When the installation of the outcasing (1) is completed, the excavation bit is replaced with a bit of small diameter, and excavated to a position at a depth where the groundwater 13 flows.

Subsequently, the grouting combined pump pipe 15 is lowered to the rock layer, and then the grouting solution is injected into the expansion tube 16 to shield and the grouting solution is filled up from the bottom into the inner wall of the heart and the grouting combined pump pipe 15. At this time, by lengthening the expansion tube 16, even if the filling of the grouting liquid in the upper portion is poor to obtain the effect of sufficient grouting.

At this time, since the corrugated pipe 14 and the leaf spring 17 are installed at predetermined intervals of the grouting double pump pipe 15, even when the grouting double pump pipe 15 is inserted into the drilling hole, the excavation hole is curved. The grouting combined pump 15 is inserted well without scratching or hanging the inner wall of the drilling hole, and maintains a constant gap between the drilling wall and the inner wall.

When the grouting construction is completed as described above, after the grouting period is finished curing pump pump using a branch tee 37, which is a pipe connection part to the pipe attachment device 25 of the upper grouting combined pump pipe (15) ( 24), but the suction check valve 32 is to be installed and the pressure compensating pressure equalizing pipe 35 is installed in the upper part of the branch tee 37 by using the pressure compensating pressure equalizing pipe 35 at the upper part of the branch tee 37. And to complete the work of the flow control valve 31 and the reverse injection pipe 30 with the pump pump (22).

In order to pump ground water after finishing the construction, water is filled in the impeller casing of the pump pump 22, and when the power is supplied while the flow control valve 31 on the back injection pipe 30 is completely closed, the grouting combined pumping Groundwater is drawn up from the natural water level inside the pipe 15, while the pressure compensating pressure equalizing pipe 35 is lowered from the natural water level so that the internal grouting pipe 15 does not have excessive negative pressure. . In the case of deep water wells with low depth, air is introduced into the heart well and the pump pump 22 tends to be incapable of pumping due to the air sucked in. At this time, when the pump pump 22 is initially operated, the pump pump 22 is used. In the state that the water level rises to the natural water level in the stopped state and the water level pump 22 is fully closed after gradually opening the flow rate control valve 31 of the reverse injection pipe 30 while the natural water level is increased. A certain amount of discharged ground water was injected into the lower part of the heart well through the pressure compensation equalization pipe 35 so that air was continuously introduced into the heart well to prevent congestion of air in the pump pump 22. When the groundwater flowing into the lower part of the heart through the reverse injection pipe 30 is balanced, it is under the normal short-term intermittent operation at the small diameter heart well. Is able to maintain a positive state without a hitch.

As such, the small diameter groundwater deep grouting pump according to the present invention improves the grouting reliability since the double grouting pump may be inserted to the required depth without being caught inside the drilling hole even when the drilling hole is curved. Since the expansion tube is completely shielded, perfect grouting can be performed without contaminating groundwater or blocking the veins of rock groundwater), and can also be used as a positive pipe to reduce the inflow of contaminant surface water in the small diameter groundwater core. It can prevent and obtain clean groundwater, and it can provide economic and easy grouting to small diameter groundwater wells under development, as well as small diameter groundwater wells under development.

Claims (6)

delete delete Corrugated pipes are formed every certain length so that the grouting double pump pipe can be inserted into the curved drill hole, and an expansion tube is mounted at the bottom to shield the gap between the inner wall of the drill hole and the dual grout pipe pump. In the small diameter groundwater deep grouting pump, which prevents the inflow and can serve as the pump, The outer circumferential surface of the combined grouting pumping pipe 15 is provided with a leaf spring (17), characterized in that the grouting combined pumping device for small diameter groundwater core. According to claim 3, The grouting combined pumping device for small diameter groundwater deep-sea well, characterized in that the internal pressure equalizing pipe 35 for the small diameter inside the grouting combined pumping pipe. The method of claim 4 wherein The upper end portion of the pressure compensating pressure equalizing pipe is fitted with a wheel barrel (28) to prevent contamination of the dust and contamination index water, and the lower portion of the small diameter groundwater, which is characterized by being close to the bottom of the groundwater core. Grouting double pumping device for cardiology. The method of claim 4 wherein A small diameter groundwater deep grouting pumping device, characterized in that the pressure compensating pressure equalizing pipe is further provided with a reverse injection pipe (30) connected to the discharge side of the pump pump (22) and a flow control valve (31).