Plugging device

Abstract

The utility model relates to a plugging device and relates to the technical field of exploration drilling, after drilling construction is completed, slurry in a slurry supply piece is driven to be conveyed into a grouting pipe and then conveyed into a channel through the grouting pipe, the slurry is stacked from a bedrock layer to a phreatic aquifer, and meanwhile, the slurry is conveyed into the channel through the grouting pipe. Groundwater can flow into the channel from the phreatic aquifer, the confined aquifer and the bedrock layer, at the moment, the slurry in the channel is mixed into the underground water, and the concentration of the slurry can be reduced. And in order to enable the pressure in the discharge pipe to be larger than that in the channel, the end, extending into the channel, of the discharge pipe is located in the fourth area, and then the mixture of the slurry and the underground water can be pressed into the discharge pipe from the interior of the channel and then is recycled into the storage part through the discharge pipe. The slurry is stacked from the bedrock layer to the phreatic aquifer until the slurry fills the whole channel, and the slurry can be solidified to fill the channel.

Description

Technical Field

[0001] The present application relates to the technical field of exploration drilling, and in particular to a plugging device. Background Art

[0002] At present, during the exploration drilling construction process in high-water-level areas, after the drilling is completed, groundwater will surge to the ground due to the breaking of the upper impermeable layer. Especially when the groundwater in high-water-level areas is relatively abundant, the pressurized water gushing time will continue for a long time, causing major environmental and safety problems on the ground. Utility Model Content

[0003] Based on this, it is necessary to provide a sealing device so that after drilling construction in high water level areas, the drilled holes can be sealed efficiently and reliably and the risk of groundwater gushing into the ground can be reduced.

[0004] A plugging device is used for a groundwater system, wherein the groundwater system includes a phreatic aquifer, an aquiclude, a confined aquifer, and a bedrock layer arranged in sequence along the direction of gravity, and the groundwater system is provided with a channel penetrating the phreatic aquifer, the aquiclude, the confined aquifer, and at least a portion of the bedrock layer along the direction of gravity; the plugging device comprises:

[0005] A grouting assembly includes a grouting member and a grouting pipe. The grouting member is used to provide slurry to the grouting pipe. One end of the grouting pipe is connected to the slurry member, and the other end extends into the channel; and

[0006] The recovery component includes a storage unit and a discharge pipe, wherein the storage unit is used to store a mixture of groundwater and slurry, and one end of the discharge pipe is connected to the storage unit, and the other end extends into the channel;

[0007] Among them, along the direction of gravity, the groundwater system includes the first area, the second area, the third area and the fourth area adjacent to each other in sequence; the phreatic aquifer is located in the first area, the aquiclude is located in the second area, the pressure aquifer is located in the third area, and the bedrock layer is located in the fourth area; the end of the discharge pipe extending into the channel is located in the fourth area.

[0008] In one embodiment, at least one through hole is formed on the discharge pipe along the radial direction of the discharge pipe;

[0009] Wherein, in a use state, at least one through hole is located at any position in the groundwater system except the second area.

[0010] In one embodiment, the discharge pipe is provided with a plurality of through holes along the radial direction of the discharge pipe;

[0011] wherein the plurality of through holes are spaced apart along the circumference of the discharge pipe; and / or

[0012] A plurality of through holes are arranged at intervals along the axial direction of the discharge pipe.

[0013] In one embodiment, a plurality of through holes are provided, and the plurality of through holes are arranged in at least three rows along the axial direction of the discharge pipe, and the arrangement direction of the through holes in each row is parallel to the axial direction of the discharge pipe; the arrangement mode of all rows of through holes includes a first mode and a second mode; the rows arranged in the first mode and the rows arranged in the second mode are staggered along the circumference of the discharge pipe;

[0014] There is at least one row arranged in the first manner, and at least two rows arranged in the second manner;

[0015] For all through holes arranged in the same row in a first manner, the distances between the centers of all through holes and the bottom end of the discharge pipe along the axial direction of the discharge pipe constitute a first distance set; for all through holes arranged in the same row in a second manner, the distances between the centers of all through holes and the bottom end of the discharge pipe along the axial direction of the discharge pipe constitute a second distance set; all distances in the first distance set are different from all distances in the second distance set;

[0016] The bottom end of the discharge pipe is the end of the discharge pipe extending into the channel.

[0017] In one embodiment, all distances in the first distance set and all distances in the second distance set are arranged in ascending order to form a preset sorting; in the preset sorting, the difference between any two adjacent distances has the same target value; and / or

[0018] In each row of through holes, all through holes are arranged at equal intervals along the axial direction of the discharge pipe; and / or

[0019] All the discharge holes are arranged at equal intervals along the circumference of the discharge pipe; and / or

[0020] The number of through-holes in a row arranged in a first manner is less than the number of through-holes in a row arranged in a second manner; and / or

[0021] Along the circumference of the discharge pipe, the first row of through holes and the last row of through holes are arranged in the same manner.

[0022] In one embodiment, a plurality of through holes are provided, and the apertures of the plurality of through holes are the same; and / or

[0023] The through hole has a diameter of 5 mm to 10 mm.

[0024] In one embodiment, in use, in the direction of gravity, the height between the bottom end of the discharge pipe and the bottom wall of the channel is the same as the height between the bottom end of the grouting pipe and the bottom wall of the channel; and / or

[0025] On a cross section perpendicular to the axial direction of the discharge pipe, the cross-sectional area of ​​the discharge pipe is a first area; on a cross section perpendicular to the direction of gravity, the cross-sectional area of ​​the channel is a second area;

[0026] The ratio of the first area to the second area is 0.1 to 0.3.

[0027] In one embodiment, a plurality of discharge pipes are provided, and the plurality of discharge pipes are spaced apart around the first axis; the extension direction of the first axis and the axial direction of the discharge pipe are parallel to each other.

[0028] In one embodiment, the blocking device further includes a mounting member having a first mounting hole and a second mounting hole which are not connected to each other; the grouting pipe is inserted into the first mounting hole, and the discharge pipe is inserted into the second mounting hole.

[0029] In one embodiment, the diameter of the first mounting hole is larger than the diameter of the grouting pipe, and the difference between the diameter of the first mounting hole and the diameter of the grouting pipe is 2 mm to 5 mm, and / or

[0030] The diameter of the second mounting hole is larger than the diameter of the discharge pipe, and the difference between the diameter of the second mounting hole and the diameter of the discharge pipe is 2 mm to 5 mm, and / or

[0031] A plurality of mounting members are arranged, and the plurality of mounting members are arranged at intervals along the axial direction of the discharge pipe.

[0032] The above-mentioned plugging device is used in a groundwater system, which is provided with a channel that passes through a phreatic aquifer, an impermeable layer, a confined aquifer, and at least part of a bedrock layer in the direction of gravity. In the direction of gravity, the groundwater system includes a first region, a second region, a third region, and a fourth region that are adjacent to each other in sequence; the phreatic aquifer is located in the first region, the impermeable layer is located in the second region, the confined aquifer is located in the third region, and the bedrock layer is located in the fourth region. After the drilling construction is completed, the slurry in the slurry supply component is driven and transferred to the grouting pipe, and then transferred to the channel by means of the grouting pipe. The slurry is stacked from the bedrock layer to the phreatic aquifer. At the same time, groundwater will flow into the channel from the phreatic aquifer, the confined aquifer, and the bedrock layer. At this time, the slurry in the channel is mixed with the groundwater, and the concentration of the slurry will be reduced. To ensure that the pressure within the discharge pipe is greater than the pressure within the channel, the end of the discharge pipe extending into the channel is located in the fourth region. This allows the slurry and groundwater mixture to be pressed from the channel into the discharge pipe and then recovered into the storage unit through the discharge pipe. The slurry accumulates from the bedrock layer to the submerged aquifer until the entire channel is filled. The slurry then solidifies and fills the channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic structural diagram of a blocking device provided in some embodiments of the present application.

[0034] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the open storage device in the slurry supply part.

[0035] Figure 3 for Figure 1 Schematic diagram of the structure in which the discharge pipe of the sealing device is connected to the storage component.

[0036] Figure 4 for Figure 3 Schematic diagram of the structure of the through hole opened on the discharge pipe.

[0037] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the mounting member in the blocking device is shown.

[0038] Figure 6 for Figure 1 Schematic diagram of the top view of the mounting parts, grouting pipe and discharge pipe installed together.

[0039] Figure 7 for Figure 1 Schematic diagram of the structure when the discharge pipe and grouting pipe are installed to multiple mounting parts.

[0040] Figure 8 A schematic flow chart of a method for using the occlusion device provided in some embodiments of the present application.

[0041] The accompanying drawings in the specific implementation manner are as follows:

[0042] 100. Plugging device, a. phreatic aquifer, b. aquiclude, c. confined aquifer, d. bedrock layer, A. first zone, B. second zone, C. third zone, D. fourth zone, 1. slurry supply component, 11. open storage device, 12. slurry pump, Q1. slurry inlet hole, Q2. slurry discharge hole, 2. grouting pipe, 3. storage component, 4. discharge pipe, 5. mounting component, Z1. first mounting hole, Z2. second mounting hole, u. channel, K. through hole, t. same target value, L1. first axis, G. direction of gravity. DETAILED DESCRIPTION

[0043] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0045] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0046] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0048] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0049] Reference Figure 1 , Figure 1 A schematic structural diagram of a blocking device 100 provided in some embodiments of the present application is shown.

[0050] The plugging device 100 is used for a groundwater system, which includes a phreatic aquifer a, an aquiclude b, a confined aquifer c and a bedrock layer d arranged in sequence along the gravity direction G. The groundwater system is provided with a channel u that penetrates the phreatic aquifer a, the aquiclude b, the confined aquifer c and at least part of the bedrock layer d along the gravity direction G.

[0051] "Unconfined aquifer a" refers to the first aquifer below the Earth's surface with a free water surface. "Aquiclude b" refers to an impermeable or extremely poorly permeable rock or soil layer that can prevent or significantly slow the flow of groundwater. "Confined aquifer c" refers to a pressurized aquifer whose water level is higher than the ground or aquiclude b at the top of the aquifer. "Bedrock layer d" refers to the intact rock below the weathered layer of the land surface, within the cracks and pores of bedrock layer d, through which groundwater can flow. It is understood that groundwater is located in unconfined aquifer a, confined aquifer c, and bedrock layer d.

[0052] Continue to refer to Figure 1 , and combined with reference Figure 2 , Figure 2 Shown Figure 1 The three-dimensional structural diagram of the open storage device 11 in the slurry supply part 1. The plugging device 100 includes a slurry lowering component and a recovery component. The slurry lowering component includes a slurry supply part 1 and a grouting pipe 2. The slurry supply part 1 is used to provide slurry to the grouting pipe 2. One end of the grouting pipe 2 is connected to the slurry supply part 1, and the other end extends into the channel u. Figure 2The slurry supply part 1 can be composed of an open storage device 11 and a grouting machine 12. The open storage device 11 can be a cubic shape, made of steel, with an open upper part that is not sealed, and has two holes on the side, one is a slurry inlet hole Q1 for feeding into the open storage device 11, and the other is a slurry discharge hole Q2 for an external grouting pipe 2. The grouting pipe 2 can be a steel pipe or a plastic pipe, or two grouting sub-pipes can be nested and combined to form a grouting pipe 2. The recovery component includes a storage part 3 and a discharge pipe 4. The storage part 3 is used to store a mixture of groundwater and slurry. One end of the discharge pipe 4 is connected to the storage part 3, and the other end extends into the channel u. The grouting machine 12 is connected to the channel u by means of the grouting pipe 2, and the storage part 3 is connected to the channel u by means of the discharge pipe 4, so that the slurry can be discharged from the slurry supply part 1 into the channel u, and then recovered into the storage part 3 in the channel u.

[0053] Among them, along the gravity direction G, the groundwater system includes a first area A, a second area B, a third area C and a fourth area D adjacent to each other in sequence, the submerged aquifer a is located in the first area A, the aquiclude b is located in the second area B, the pressurized aquifer c is located in the third area C, and the bedrock layer d is located in the fourth area D. When the sealing device 100 is in use, the end of the discharge pipe 4 extending into the channel u is located in the fourth area D.

[0054] After drilling is complete, the slurry in the slurry supply element 1 is driven into the grouting pipe 2, and then transported into channel u via the grouting pipe 2. The slurry accumulates from the bedrock layer d to the submerged aquifer a. Simultaneously, groundwater flows into channel u from the submerged aquifer a, the confined aquifer c, and the bedrock layer d. The slurry in channel u is mixed with the groundwater, reducing its concentration. The end of the discharge pipe 4 extending into channel u is located in the fourth region D. The groundwater volume in the fourth region D is sufficient to ensure that the pressure within the discharge pipe 4 is greater than that within channel u, allowing the slurry and groundwater mixture to be forced from channel u into the discharge pipe 4. The slurry and groundwater mixture forced into the discharge pipe 4 is then recovered into the storage element 3. The slurry accumulates from the bedrock layer d to the submerged aquifer a until the entire channel u is filled. At this point, the slurry solidifies and fills channel u, completing the water plugging and sealing operation. When the amount of groundwater is large, multiple storage components 3 may be used for easy replacement.

[0055] In some embodiments of this application, reference may be made to Figure 3 , Figure 3 for Figure 1 Schematic diagram of the connection between the discharge pipe 4 and the storage element 3 of the plugging device 100. At least one through hole K is formed in the discharge pipe 4 along its radial direction. In use, the at least one through hole K is located at any location in the groundwater system except the second area B.

[0056] It is understandable that continuing to refer to Figure 1 and Figure 3 , groundwater enters the channel u from any position except the second region B, so in this application, a through hole K is provided at any position in the groundwater system except the second region B. "At least one" refers to a number of one or more.

[0057] In this way, the slurry and groundwater mixture in channel u can not only enter the discharge pipe 4 through the bottom end of the discharge pipe 4 located in the fourth area D, but also enter the discharge pipe 4 through the through hole K opened on the discharge pipe 4, thereby improving the rate at which the low-concentration slurry and groundwater mixture is transferred out of channel u, reducing the risk of the slurry and groundwater mixture rushing out of the ground, and making the concentration of the slurry and groundwater mixture in channel u change from low concentration to high concentration more quickly, thereby facilitating the subsequent solidification of the slurry.

[0058] In some embodiments of the present application, continue to refer to Figure 1 and Figure 3 , and combined with reference Figure 4 , Figure 4 for Figure 3 Schematic diagram of the structure of the through hole K opened on the discharge pipe 4, the discharge pipe 4 is provided with multiple through holes K along the radial direction of the discharge pipe 4. The multiple through holes K are arranged at intervals along the circumference of the discharge pipe 4; and / or the multiple through holes K are arranged at intervals along the axial direction of the discharge pipe 4.

[0059] In some embodiments, including but not limited to the following:

[0060] In the case where “a plurality of through holes K are provided in the radial direction of the discharge pipe 4 and the plurality of through holes K are spaced apart along the circumference of the discharge pipe 4”, more through holes K are provided along the circumference of the discharge pipe 4, which further improves the rate at which the slurry and groundwater mixture in the channel u enters the discharge pipe 4 through the through holes K provided on the discharge pipe 4.

[0061] In the case of "multiple through holes K arranged at intervals along the axial direction of the discharge pipe 4", more through holes K are opened along the axial direction of the discharge pipe 4, which further improves the rate at which the slurry and groundwater mixture in the channel u enters the discharge pipe 4 through the through holes K opened on the discharge pipe 4.

[0062] In the case where "along the radial direction of the discharge pipe 4, the discharge pipe 4 is provided with a plurality of through holes K, and the plurality of through holes K are arranged at intervals along the circumference of the discharge pipe 4; and the plurality of through holes K are arranged at intervals along the axial direction of the discharge pipe 4", more through holes K can be opened, thereby further improving the rate at which the slurry and groundwater mixture in the channel u enters the discharge pipe 4 through the through holes K opened on the discharge pipe 4.

[0063] In some embodiments of the present application, a plurality of through holes K are provided, and the plurality of through holes K are arranged in at least three rows along the axial direction of the discharge tube 4, with the arrangement direction of each row of through holes K being parallel to the axial direction of the discharge tube 4. All rows of through holes K are arranged in a first manner and a second manner, wherein the rows arranged in the first manner and the rows arranged in the second manner are staggered along the circumference of the discharge tube 4. The rows arranged in the first manner include at least one row, and the rows arranged in the second manner include at least two rows. For all through holes K in the same row arranged in the first manner, along the axial direction of the discharge tube 4, the distances between the centers of all through holes K and the bottom end of the discharge tube 4 constitute a first distance set; for all through holes K in the same row arranged in the second manner, along the axial direction of the discharge tube 4, the distances between the centers of all through holes K and the bottom end of the discharge tube 4 constitute a second distance set. All distances in the first distance set are different from all distances in the second distance set, and the bottom end of the discharge tube 4 is the end of the discharge tube 4 that extends into the channel u.

[0064] It should be noted that "staggered arrangement" refers to a method of arranging elements in space or on a plane according to a certain pattern, wherein adjacent elements or objects are staggered in position rather than directly aligned. Specifically, in this application, it means that these arrangements are staggered in the circumferential direction of the discharge tube 4, meaning that the first arrangement and the second arrangement alternate in the circumferential direction, thereby forming a staggered pattern on the discharge tube 4.

[0065] In the direction of gravity G, the distances between the centers of all through holes K and the bottom end of the discharge pipe 4 constitute a first distance set; for all through holes K in the same row arranged in a second manner, in the direction of gravity G, the distances between the centers of all through holes K and the bottom end of the discharge pipe 4 constitute a second distance set; all distances in the first distance set are different from all distances in the second distance set.

[0066] Here, the “distance set” refers to a set of specific distance values, where these distance values ​​are measured in the gravity direction G, from the center of the through hole K to the bottom end of the discharge tube 4 .

[0067] In other embodiments, multiple through holes K may be arranged in rows along the circumference of the discharge pipe 4, or in columns along the axial direction of the discharge pipe 4. This design makes it easier to arrange the through holes K in a regular pattern and to process and manufacture the through holes K.

[0068] It can be understood that compared with the design method of arranging multiple through holes K in rows at intervals along the circumference of the discharge pipe 4 and arranging multiple through holes K in columns at intervals along the axial direction of the discharge pipe 4, in this application, the rows arranged in the first manner and the rows arranged in the second manner are staggered along the circumference of the discharge pipe 4, and the through holes K can be arranged in larger numbers in the effective space of the discharge pipe 4, thereby increasing the discharge capacity of the discharge pipe 4.

[0069] In some embodiments of this application, you can continue to refer to Figure 3 and Figure 4 , all distances in the first distance set and all distances in the second distance set are arranged in ascending order to form a preset sorting; in the preset sorting, the difference between any two adjacent distances is the same target value t; and / or, in each row of through holes K, all through holes K are arranged at equal intervals along the axial direction of the discharge pipe 4; and / or, along the circumferential direction of the discharge pipe 4, all rows of through holes K are arranged at equal intervals; and / or, the number of through holes K in the row arranged in the first manner is less than the number of through holes K in the row arranged in the second manner; and / or, along the circumferential direction of the discharge pipe 4, the first row of through holes K and the last row of through holes K are arranged in the same manner.

[0070] In some embodiments, including but not limited to the following:

[0071] The first implementation method is to arrange all distances in the first distance set and all distances in the second distance set in ascending order to form a preset sorting, in which the difference between any two adjacent distances is the same target value t.

[0072] For ease of understanding, the following explanation will be made using an example where the cross section of the channel u after drilling is circular and has a diameter of 100 mm. In this case, the target value can be taken as 20 mm to 40 mm.

[0073] This design makes the arrangement of the through holes K on the discharge pipe 4 more uniform. The position of the through holes K can be determined according to simple rules without complicated calculations or adjustments, which makes the processing and manufacturing of the through holes K more convenient. In addition, the uniformly distributed through holes K can enhance the overall stability of the discharge pipe 4 structure and reduce stress concentration and potential weaknesses. Figure 4 , the through holes K may be arranged in a plum blossom shape.

[0074] Second embodiment: in each row of through holes K, all through holes K are arranged at equal intervals along the axial direction of the discharge pipe 4 .

[0075] Such a design makes the through holes K more evenly arranged in the axial direction of the discharge pipe 4, further improves the convenience of processing and manufacturing the through holes K, and further enhances the overall stability of the discharge pipe 4 structure.

[0076] The third embodiment: along the circumference of the discharge pipe 4, all the discharge holes K are arranged at equal intervals.

[0077] Such a design also makes the through holes K more evenly distributed in the circumferential direction of the discharge pipe 4, further improves the convenience of processing and manufacturing the through holes K, and further enhances the overall stability of the discharge pipe 4 structure.

[0078] A fourth embodiment: at least one row arranged in the first manner is provided, and at least two rows arranged in the second manner are provided. For all through holes K in the same row arranged in the first manner, the number of through holes K in the row arranged in the first manner is less than the number of through holes K in the row arranged in the second manner.

[0079] With such a design, a greater number of through holes K arranged in the second manner can be arranged in the limited space of the discharge pipe 4 , further increasing the number of through holes K arranged on the discharge pipe 4 .

[0080] Fifth embodiment: along the circumference of the discharge pipe 4 , the first row of through holes K and the last row of through holes K are arranged in the same manner.

[0081] With this design, the same arrangement of the first and last rows of through holes K can determine the symmetry of the discharge pipe 4, making the distribution of the through holes K in the circumferential direction of the discharge pipe 4 more uniform, further improving the convenience of processing and manufacturing the through holes K, and further enhancing the overall stability of the discharge pipe 4 structure.

[0082] It should be noted that the above-mentioned implementation modes can be combined individually or with each other to form new technical solutions.

[0083] In some embodiments of the present application, reference Figure 4 , a plurality of through holes K are provided, and the apertures of the plurality of through holes K are the same; and / or, the aperture of the through hole K is 5 mm to 10 mm.

[0084] In some embodiments, including but not limited to the following:

[0085] In the case where multiple through-holes K are provided, each having the same aperture, the same aperture allows the through-holes K on the discharge pipe 4 to be opened using the same tool, thereby increasing production efficiency. Furthermore, the same aperture allows for more uniform stress distribution across the various components of the discharge pipe 4, enhancing the overall structural stability of the discharge pipe 4.

[0086] When the diameter of the through hole K is 5 mm to 10 mm, the amount of groundwater and slurry mixture that enters the discharge pipe 4 through the through hole K can be further increased. If the diameter is set too small, the amount of groundwater and slurry mixture allowed to pass through will be reduced. If the diameter is set too large, the pressure inside the discharge pipe 4 will be affected, which will also reduce the amount of groundwater and slurry mixture that enters the discharge pipe 4 through the through hole K. It is understood that the diameter of the through hole K can be 5 mm, 6 mm, 9 mm, 10 mm, etc.

[0087] It should be noted that the above-mentioned implementation modes can be combined individually or with each other to form new technical solutions.

[0088] In some embodiments of the present application, continue to refer to Figure 1 In use, in the direction of gravity G, the height between the bottom end of the discharge pipe 4 and the bottom wall of the channel u is the same as the height between the bottom end of the grouting pipe 2 and the bottom wall of the channel u.

[0089] Such a design allows for simultaneous grouting and discharge, improving work efficiency. To reduce the risk of slurry upwelling, the bottom end of the grouting pipe 2 cannot be too close to the bottom wall of the channel u. To reduce the risk of insufficient slurry filling in the channel u, the bottom end of the grouting pipe 2 cannot be too far from the bottom wall of the channel u. Maintaining an appropriate distance can better control the flow and distribution of the slurry and improve the grouting effect. When the grouting steel pipe is placed approximately 0.5 to 1 m above the bottom of the borehole, the grouting effect can be further improved.

[0090] In some embodiments of the present application, continue to refer to Figure 1 In a cross section perpendicular to the axial direction of the discharge pipe 4 , the cross-sectional area of ​​the discharge pipe 4 is a first area, and in a cross section perpendicular to the gravity direction G, the cross-sectional area of ​​the channel u is a second area. The ratio of the first area to the second area is 0.1 to 0.3.

[0091] It is understandable that the discharge pipe 4 can be made of polyvinyl chloride, which has the advantages of both lightness and durability. If the ratio of the first area to the second area is too large, the size of the discharge pipe 4 will be too large, which may cause the pressure difference between the discharge pipe 4 and the pressure in the channel u to decrease, thereby reducing the amount of slurry and groundwater mixture pressed into the discharge pipe 4, affecting the discharge efficiency. If the ratio of the first area to the second area is too small, the size of the discharge pipe 4 will be too small, and the space allowed for the slurry and groundwater mixture to enter the discharge pipe 4 will also be reduced, which will also affect the discharge efficiency. When the ratio of the first area to the second area is 0.1 to 0.3, the discharge rate can be further improved. It is understandable that the ratio of the first area to the second area can be 0.1, 0.2, 0.3, etc. Specifically in the present application, the diameter of the discharge pipe 4 can be 15mm to 30mm.

[0092] In some embodiments of the present application, a plurality of discharge pipes 4 are provided, and the plurality of discharge pipes 4 are spaced apart around the first axis L1 , and the extension direction of the first axis L1 and the axial direction of the discharge pipe 4 are parallel to each other.

[0093] In this way, providing more discharge pipes 4 can further accelerate the discharge speed of the plugging device 100. Multiple discharge pipes 4 are spaced apart around the first axis L1, with the extension direction of the first axis L1 and the axial direction of the discharge pipes 4 being parallel to each other. While enabling the deployment of more discharge pipes 4, the arrangement of the discharge pipes 4 is also more uniform, allowing groundwater and slurry mixture from various portions within the channel u to be discharged out of the channel u together, reducing the risk of local accumulation of groundwater and slurry mixture. The number of discharge pipes 4 provided can be determined based on the amount of groundwater.

[0094] In some embodiments of the present application, continue to refer to Figure 1 , and combined with reference Figure 5 and Figure 6 . Figure 5 for Figure 1 The schematic diagram of the three-dimensional structure of the mounting member 5 in the blocking device 100 is shown. Figure 6 for Figure 1 Schematic top view of the mounting member 5, the grouting pipe 2, and the discharge pipe 4 installed together. The plugging device 100 also includes a mounting member 5, which is provided with a first mounting hole Z1 and a second mounting hole Z2 that are not connected to each other; the grouting pipe 2 is inserted into the first mounting hole Z1, and the discharge pipe 4 is inserted into the second mounting hole Z2.

[0095] The mounting member 5 is provided for mounting the grouting pipe 2 and the discharge pipe 4. Specifically, in this application, the mounting member 5 can be made of plastic and be roughly cylindrical. The specific structural dimensions of the mounting member 5 can be designed according to the dimensions of the channel u. For ease of understanding, the following description assumes that the cross-section of the channel u after drilling is circular and has a diameter of 100 mm.

[0096] In some embodiments of the present application, continue to refer to Figure 5 and Figure 6 , and combined with reference Figure 7 , Figure 7 Shown Figure 1 Schematic diagram of the structure when the discharge pipe 4 and the grouting pipe 2 are installed to multiple mounting members 5. The diameter of the first mounting hole Z1 is 2mm to 5mm larger than the diameter of the grouting pipe 2, and / or the diameter of the second mounting hole is larger than the diameter of the discharge pipe, and the difference between the diameter of the second mounting hole and the diameter of the discharge pipe is 2mm to 5mm, and / or a plurality of mounting members 5 are arranged, and the multiple mounting members 5 are arranged at intervals along the axial direction of the discharge pipe.

[0097] In some embodiments, including but not limited to the following:

[0098] In the case where "the aperture of the first mounting hole is larger than the diameter of the grouting pipe, and the difference between the aperture of the first mounting hole and the diameter of the grouting pipe is 2mm to 5mm", it can have the advantages of easy installation and stable installation. It can be understood that the diameter of the grouting pipe 2 can be 2mm, 3mm, 4mm and 5mm, etc. Compared with the case where the difference between the aperture of the first mounting hole Z1 and the diameter of the grouting pipe 2 is greater than 5mm, setting the difference between the aperture of the first mounting hole Z1 and the diameter of the grouting pipe 2 to 2mm to 5mm is more conducive to stabilizing the grouting pipe 2. Compared with the case where the difference between the aperture of the first mounting hole Z1 and the diameter of the grouting pipe 2 is less than 2mm, setting the difference between the aperture of the first mounting hole and the diameter of the grouting pipe to 2mm to 5mm is more conducive to the installation of the grouting pipe 2.

[0099] When the diameter of the second mounting hole is larger than the diameter of the discharge pipe, and the difference between the diameters of the second mounting hole and the discharge pipe is 2mm to 5mm, the advantages of both easy and secure installation are also achieved. It is understood that the diameter of the discharge pipe 4 can be 2mm, 3mm, 4mm, or 5mm, among others. Compared to a case where the difference between the diameters of the second mounting hole Z2 and the discharge pipe 4 is greater than 5mm, a difference between the diameters of the second mounting hole Z2 and the discharge pipe 4 of 2mm to 5mm is more conducive to stabilizing the discharge pipe 4. Furthermore, compared to a case where the difference between the diameters of the second mounting hole Z2 and the discharge pipe 4 is less than 2mm, a difference between the diameters of the second mounting hole Z2 and the discharge pipe 4 of 2mm to 5mm is more conducive to installing the discharge pipe 4.

[0100] When multiple mounting members 5 are provided, and the multiple mounting members 5 are spaced apart along the axial direction of the discharge pipe, more mounting members 5 can be arranged regularly, making the installation of the discharge pipe 4 and the grouting pipe 2 more stable. The spacing between two adjacent mounting members 5 can be 5m to 8m. It is understood that the spacing between two adjacent mounting members 5 can be 5m, 6m, 7m, 8m, etc.

[0101] It should be noted that the above-mentioned implementation modes can be combined individually or with each other to form new technical solutions.

[0102] To facilitate understanding of the use of the occluding device 100, please refer to Figure 8 , Figure 8 This is a flow chart of a method for using the occluding device 100 provided in some embodiments of the present application. The following describes the method of use:

[0103] In step S100, the slurry is prepared. The slurry is made of ordinary Portland cement with a P.O. of not less than 32.5, with a water-cement ratio of 0.4 to 1.0, that is, the weight ratio of water to cement in the concrete is 0.4 to 1.0, and the density of the cement slurry is 1.3g / cm 3 to 1.8g / cm 3 The prepared slurry is placed in the slurry supply part 1, and the cement consumption is estimated based on a channel u depth of 5m corresponding to a 50kg bag of ordinary Portland cement.

[0104] In this way, the mud is prepared for subsequent slurrying into channel u.

[0105] In step S200, after the drilling operation is completed, the drill rod and drill bit are withdrawn from the borehole and moved to the surface. The grouting pipe 2, discharge pipe 4, and mounting member 5 are lowered. The bottoms of the grouting pipe 2 and discharge pipe 4 are approximately 0.5 to 1 meter higher than the bottom wall of channel u. The discharge pipe 4 is pre-defined with through holes K arranged in a plum blossom pattern, excluding the second area B. It is understood that after the discharge pipe 4 is lowered into channel u, groundwater, primarily pressurized water, flows into the discharge pipe 4 through the through holes K.

[0106] In this way, the grouting pipe 2, the discharge pipe 4 and the mounting member 5 of the blocking device 100 are placed at the channel u and preparations are completed.

[0107] In step S300, the power switch of the slurry supply unit 1 is turned on, and slurry is injected from the slurry supply unit 1 through the injection pipe into channel u. As the slurry in channel u increases, the slurry begins to backfill upward from the bottom wall of channel u toward the ground. The mixture of slurry and groundwater also flows into the discharge pipe 4 through the through hole K of the discharge pipe 4, gradually rising to a position above the through hole K of the discharge pipe 4. The grouting pressure is 0.4 MPa to 1.0 MPa. It is understood that the grouting pressure can be 0.4 MPa, 0.5 MPa, 0.6 MPa, 1.0 MPa, etc.

[0108] In this way, the slurry flows into the channel u and at the same time, the mixture of slurry with lower concentration and groundwater is also poured into the discharge pipe 4 through the through hole K of the discharge pipe 4 and then discharged from the channel u.

[0109] In step S400, as the slurry continues to flow into the through hole K, the submerged aquifer a and the confined aquifer c within the through hole K are gradually blocked. Groundwater accumulated in the channel u, squeezed by the slurry, rises through the discharge pipe 4 into the storage element 3, where it is collected by the storage element 3 connected to the top of the discharge pipe 4.

[0110] This reduces the risk of groundwater gushing out in an uncontrolled manner after rising to the surface.

[0111] In step S500, after the channel u is filled with slurry, the slurry is continued to be poured into the grouting pipe 2 and the discharge pipe 4, and then the ground is leveled.

[0112] In this way, the channel u is completely filled with slurry, further enhancing the blocking effect.

[0113] In step S600, the site is inspected for two days. If any sinkhole or cavity is found in the ground hole, a small amount of cement slurry is manually mixed to seal the hole. The sealing is now complete.

[0114] In this way, the hole after drilling is further improved.

[0115] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0116] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A plugging device for a groundwater system, characterized in that: The groundwater system includes a phreatic aquifer, an impermeable layer, a confined aquifer, and a bedrock layer arranged in sequence along the direction of gravity, and the groundwater system is provided with a channel penetrating the phreatic aquifer, the impermeable layer, the confined aquifer, and at least a portion of the bedrock layer along the direction of gravity; the blocking device includes: A grouting assembly, comprising a grouting member and a grouting pipe, wherein the grouting member is used to provide slurry to the grouting pipe, one end of the grouting pipe is connected to the slurry member, and the other end extends into the channel; and a recovery assembly comprising a storage element and a discharge pipe, wherein the storage element is used to store a mixture of groundwater and slurry, and one end of the discharge pipe is connected to the storage element and the other end extends into the channel; Among them, along the gravity direction, the groundwater system includes a first area, a second area, a third area and a fourth area adjacent to each other in sequence; the phreatic aquifer is located in the first area, the aquiclude is located in the second area, the confined aquifer is located in the third area, and the bedrock layer is located in the fourth area; the sealing device is in use, and the end of the discharge pipe extending into the channel is located in the fourth area.

2. The blocking device according to claim 1, characterized in that: At least one through hole is formed on the discharge pipe along the radial direction of the discharge pipe; Wherein, in the use state, the at least one through hole is located at any position in the groundwater system except the second area.

3. The blocking device according to claim 2, characterized in that: Along the radial direction of the discharge pipe, the discharge pipe is provided with a plurality of through holes; Wherein, a plurality of the through holes are arranged at intervals along the circumference of the discharge pipe; and / or The plurality of through holes are arranged at intervals along the axial direction of the discharge pipe.

4. The blocking device according to claim 2, characterized in that: There are a plurality of through holes, and the plurality of through holes are arranged in at least three rows along the axial direction of the discharge pipe, and the arrangement direction of the through holes in each row is parallel to the axial direction of the discharge pipe; the arrangement mode of all rows of through holes includes a first mode and a second mode; the rows arranged in the first mode and the rows arranged in the second mode are staggered along the circumference of the discharge pipe; There is at least one row arranged in the first manner, and at least two rows arranged in the second manner. For all the through holes arranged in the same row in the first manner, along the axial direction of the discharge pipe, the distances between the centers of all the through holes and the bottom end of the discharge pipe constitute a first distance set; for all the through holes arranged in the same row in the second manner, along the axial direction of the discharge pipe, the distances between the centers of all the through holes and the bottom end of the discharge pipe constitute a second distance set; all distances in the first distance set are different from all distances in the second distance set; The bottom end of the discharge pipe is the end of the discharge pipe extending into the channel.

5. The blocking device according to claim 4, characterized in that: All distances in the first distance set and all distances in the second distance set are arranged in ascending order to form a preset sorting; in the preset sorting, the difference between any two adjacent distances has the same target value; and / or In each row of the through holes, all the through holes are arranged at equal intervals along the axial direction of the discharge pipe; and / or Along the circumference of the discharge pipe, all rows of through holes are arranged at equal intervals; and / or The number of the through holes in the row arranged in the first manner is less than the number of the through holes in the row arranged in the second manner; and / or Along the circumference of the discharge pipe, the through holes in the first row and the through holes in the last row are arranged in the same manner.

6. The blocking device according to claim 2, characterized in that: There are multiple through holes, and the apertures of the multiple through holes are the same; and / or The through hole has a diameter of 5 mm to 10 mm.

7. The blocking device according to any one of claims 1 to 6, characterized in that: In the use state, in the direction of gravity, the height between the bottom end of the discharge pipe and the bottom wall of the channel is the same as the height between the bottom end of the grouting pipe and the bottom wall of the channel; and / or On a cross section perpendicular to the axial direction of the discharge pipe, the cross-sectional area of ​​the discharge pipe is a first area; on a cross section perpendicular to the direction of gravity, the cross-sectional area of ​​the channel is a second area; The ratio of the first area to the second area is 0.1 to 0.

3.

8. The blocking device according to any one of claims 1 to 6, characterized in that: There are multiple discharge pipes, and the multiple discharge pipes are spaced apart around the first axis; the extension direction of the first axis and the axial direction of the discharge pipe are parallel to each other.

9. The blocking device according to any one of claims 1 to 6, characterized in that: The blocking device further includes a mounting member, on which a first mounting hole and a second mounting hole that are not connected to each other are formed; the grouting pipe is inserted into the first mounting hole, and the discharge pipe is inserted into the second mounting hole.

10. The blocking device according to claim 9, characterized in that: The diameter of the first mounting hole is larger than the diameter of the grouting pipe, and the difference between the diameter of the first mounting hole and the diameter of the grouting pipe is 2 mm to 5 mm, and / or The diameter of the second mounting hole is larger than the diameter of the discharge pipe, and the difference between the diameter of the second mounting hole and the diameter of the discharge pipe is 2 mm to 5 mm, and / or There are multiple mounting members, and the multiple mounting members are spaced apart along the axial direction of the discharge pipe.

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