Methods for treating water seepage in foundation pits during waterway regulation construction

Abstract

The present invention is applicable to the field of waterway regulation construction and provides a method for controlling water seepage in foundation pits for waterway regulation construction, comprising the following steps: Step (1): Pumping water to lower the groundwater level: Using a well pump or a deep well water pump or other equipment to pump out the accumulated seepage water in the foundation pit to lower the groundwater level; Step (2): Inserting a foundation pit water seepage detection device into the ground to detect the water content of the soil, thereby determining the degree of soil deformation; Step (3): When the water content of the soil is less than the standard value, using grouting technology, injecting solidifying material into the soil around the foundation pit to form a blocking layer; When the water content of the soil is greater than the standard value, setting an anti-seepage wall or an anti-seepage isolation layer around the foundation pit to isolate the infiltration of external water sources. In this method for controlling water seepage in foundation pits for waterway regulation construction, all arc-shaped brackets drive the cutters to break the soil, and through the positions of the floats in the multiple cavities, the water seepage conditions at each detection position can be observed, facilitating comparative observation.

Description

Technical Field

[0001] The invention belongs to the field of waterway regulation construction, and in particular relates to a method for controlling water seepage in a foundation pit during waterway regulation construction. Background Art

[0002] Pit seepage is a highly detrimental effect on groundwater. When pressurized water exists beneath the foundation pit, excavation reduces the thickness of the impermeable layer overlying the aquifer. When the thickness of the impermeable layer decreases to a certain level, the head pressure of the pressurized water can break through or destroy the pit floor, causing a sudden surge. When a sudden surge occurs, a network of cracks or dendritic cracks appear at the bottom of the pit, allowing groundwater to surge through the cracks, carrying soil particles with it, resulting in sand flow, water spray, and sand bubbling. This causes water to accumulate in the pit, softening the foundation and reducing its strength.

[0003] Water seepage in foundation pits is a common phenomenon during waterway regulation construction. In existing waterway regulation construction, water seepage control methods for foundation pits usually require first understanding the water seepage situation at the water seepage site before carrying out control construction. A foundation pit water seepage detection device with publication number CN217765957U, which is buried deep in the soil, uses the buoyancy generated by water to detect whether there is underground water seepage deep in the foundation pit. The device comprises a rod and a detection mechanism connected to the inside of the rod, the detection mechanism comprising a float and a connecting rod, the float being arranged inside the rod, the connecting rod being fixedly connected to the float, the bottom of the rod being connected to a connecting mechanism, the rod being connected to a fixing mechanism, the detection mechanism further comprising a threaded block and a through hole, the threaded block being threadedly connected to the inner wall of the bottom end of the rod, and a plurality of through holes being provided on the threaded block.

[0004] This foundation pit seepage detection device also has the following defects: during the burial of the device, the through hole is prone to blockage, thereby affecting the detection results, and a single group of samples taken during the detection process is prone to cause deviation in the detection results, thereby affecting the seepage control effect.

[0005] In order to avoid the above technical problems, it is necessary to provide a method for treating water seepage in foundation pits during waterway regulation construction to overcome the above defects in the prior art. Summary of the Invention

[0006] The purpose of the present invention is to provide a method for treating water seepage in foundation pits during waterway regulation construction, aiming to solve the problem that the water seepage detection results in the existing foundation pit water seepage treatment process have large deviations, which affects the treatment effect.

[0007] The present invention is achieved by providing a method for treating water seepage in a foundation pit during waterway regulation construction, comprising the following steps:

[0008] Step (1): Pumping water to lower the groundwater level: Use well pumps or deep well water pumps to pump out the seepage water in the foundation pit to lower the groundwater level and reduce the amount of seepage;

[0009] Step (2): inserting the foundation pit seepage detection device into the ground to detect the moisture content of the soil, thereby determining the degree of soil deformation;

[0010] Step (3): When the water content of the soil is less than the standard value, solidifying materials are injected into the soil around the foundation pit through grouting technology to form a blocking layer to prevent groundwater from penetrating into the foundation pit;

[0011] When the water content of the soil is greater than the standard value, an anti-seepage wall or anti-seepage isolation layer is set up around the foundation pit to isolate the infiltration of external water sources;

[0012] The foundation pit water seepage detection device comprises: an outer shell, a soil breaking mechanism, a water pumping component and a data display mechanism;

[0013] The soil-breaking mechanism is connected to the outer shell, the water-pumping assembly is arranged inside the outer shell, and the data display mechanism is used to display the water pumping amount of the water-pumping assembly.

[0014] A further technical solution, in step (2), specifically comprises the following steps: holding the outer jacket and inserting it downwards into the water seepage part, inserting the soil-breaking mechanism into the ground, and then the pumping assembly pumping water, and the data display mechanism displays the amount of water pumped by the pumping assembly, thereby detecting the moisture content of the soil and judging the degree of soil deformation.

[0015] According to a further technical solution, the soil-breaking mechanism includes an arc-shaped bracket, a cutter, a filter plate and a drive assembly;

[0016] The outer sleeve is rotatably connected to a plurality of arc-shaped brackets, a side of the arc-shaped bracket facing away from the outer sleeve is fixedly connected to a cutter, a side of the arc-shaped bracket close to the outer sleeve is fixedly connected to a filter plate, and the filter plate is communicated with the arc-shaped bracket.

[0017] According to a further technical solution, the drive assembly includes an inner sleeve, a sector gear, a gear ring seat and a threaded sleeve;

[0018] The threaded sleeve is threadedly connected to the outer sleeve, the inner sleeve is rotatably connected to the threaded sleeve, one end of the inner sleeve is fixedly connected to a gear ring seat, the outer side surface of the outer sleeve is fixedly connected to a rotating seat, the sector gear is rotatably connected to the rotating seat, and the sector gear is meshed with the gear ring seat, and the arc-shaped bracket is fixedly connected to the sector gear;

[0019] The inner wall of the outer sleeve is provided with a sliding groove along the length direction, and the inner sleeve is fixedly connected with a slide plate, and the slide plate is slidably connected in the sliding groove.

[0020] According to a further technical solution, the pumping assembly includes a piston, a pull rod, a rubber tube and a valve assembly;

[0021] The inner sleeve is provided with a plurality of partitions, and the inner sleeve is divided into a plurality of grooves by the partitions. The inner wall of each groove is slidably and sealedly connected to a piston. Each groove is connected to an arc-shaped bracket through a rubber tube. All pistons are connected to a pull rod. The valve assembly is used to control the unidirectional flow of water to the groove.

[0022] A further technical solution is that the valve assembly includes a one-way inlet valve and a one-way outlet valve. The side wall of each groove cavity is connected to a one-way inlet valve, and the water inlet of the one-way inlet valve is connected to a rubber tube. Each piston is connected to a one-way outlet valve, and the water outlet of the one-way outlet valve faces the outside of the inner sleeve.

[0023] A further technical solution is that the data display mechanism includes a float and a scale. A float is provided in the groove cavity, and the side walls of the outer sleeve and the inner sleeve are provided with a strip observation window. The strip observation window is marked with a scale. When water flows into the groove cavity, the float floats up, and the position of the float is observed by the scale to judge the water level.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention provides a method for treating water seepage in a foundation pit during waterway regulation construction. The device is inserted into the ground, and the outer cover is held and inserted downwardly into the water seepage location. All arc-shaped brackets drive the cutter to break the ground. The position of the floats in the multiple grooves can be used to observe the water seepage situation at each detection location, facilitating comparative observation.

[0026] The present invention provides a method for treating water seepage in foundation pits during waterway regulation construction. When a cutter breaks soil, a filter plate is arranged on the back of the cutter. The arc-shaped bracket is arc-shaped, which can prevent the filter plate from contacting the soil layer when the filter plate moves downward or rotates around a rotating seat, thereby effectively preventing the filter holes of the filter plate from being clogged. The filter plate filters external soil blocks to avoid clogging of the filter plate.

[0027] The present invention provides a method for treating water seepage in foundation pits during waterway regulation construction. By using three arc-shaped supports to simultaneously perform water pumping tests at different locations below the ground, the method can effectively control variables, improve detection accuracy, and thus determine the degree of soil deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 A schematic diagram of the connection between the ground-breaking mechanism and the data display mechanism;

[0030] Figure 3 is a cross-sectional view of the jacket;

[0031] Figure 4 This is a cross-sectional view of the inner sleeve.

[0032] In the attached figure: 1. outer sleeve; 2. earth-breaking mechanism; 21. arc-shaped bracket; 22. tool; 23. filter plate; 24. drive assembly; 241. inner sleeve; 242. sector gear; 243. gear ring seat; 244. threaded sleeve; 245. slide; 246. slide plate; 3. pumping assembly; 31. piston; 32. pull rod; 33. rubber tube; 34. valve assembly; 341. one-way inlet valve; 342. one-way outflow valve; 4. data display mechanism; 41. float; 42. scale; 5. rotating seat; 6. partition. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0035] like Figure 1 As shown, a method for treating water seepage in a foundation pit during waterway regulation construction provided by the present invention comprises the following steps:

[0036] Step (1): Pumping water to lower the groundwater level: Use well pumps or deep well water pumps to pump out the seepage water in the foundation pit to lower the groundwater level and reduce the amount of seepage;

[0037] Step (2): inserting the foundation pit seepage detection device into the ground to detect the moisture content of the soil, thereby determining the degree of soil deformation;

[0038] Step (3): When the water content of the soil is less than the standard value, solidifying materials are injected into the soil around the foundation pit through grouting technology to form a blocking layer to prevent groundwater from penetrating into the foundation pit;

[0039] When the water content of the soil is greater than the standard value, an anti-seepage wall or anti-seepage isolation layer is set up around the foundation pit to isolate the infiltration of external water sources;

[0040] The foundation pit water seepage detection device comprises: a jacket 1, a soil breaking mechanism 2, a water pumping component 3 and a data display mechanism 4;

[0041] The earth-breaking mechanism 2 is connected to the outer shell 1 , the water pumping assembly 3 is arranged inside the outer shell 1 , and the data display mechanism 4 is used to display the water pumping amount of the water pumping assembly 3 .

[0042] In the embodiment of the present invention, Figure 1As shown, as a preferred embodiment of the present invention, in step (2), the specific steps are: holding the outer shell 1 and inserting it downward into the water seepage part, inserting the soil-breaking mechanism 2 into the ground, and then the pumping component 3 pumps water, and the data display mechanism 4 displays the water pumping amount of the pumping component 3, thereby detecting the moisture content of the soil and judging the degree of soil deformation.

[0043] In the embodiment of the present invention, Figure 2 As shown in FIG. 1 , as a preferred embodiment of the present invention, the soil-breaking mechanism 2 includes an arc-shaped bracket 21 , a cutter 22 , a filter plate 23 and a drive assembly 24 ;

[0044] The outer sleeve 1 is rotatably connected to a plurality of arc-shaped brackets 21 , a side of the arc-shaped bracket 21 facing away from the outer sleeve 1 is fixedly connected to a cutter 22 , a side of the arc-shaped bracket 21 close to the outer sleeve 1 is fixedly connected to a filter plate 23 , and the filter plate 23 is communicated with the arc-shaped bracket 21 .

[0045] In the earth-breaking mechanism 2, hold the outer sleeve 1 and insert it downward into the water seepage part. All the arc-shaped brackets 21 drive the cutter 22 to break the soil. When the arc-shaped bracket 21 is inserted into the predetermined position, the pumping component 3 is started, and the filter plate 23 filters the soil blocks, thereby performing water pumping detection. By performing water pumping detection at different positions under the ground at the same time through three arc-shaped brackets 21, the variables can be effectively controlled and the detection accuracy can be provided.

[0046] In the embodiment of the present invention, Figure 3 As shown, as a preferred embodiment of the present invention, the driving assembly 24 includes an inner sleeve 241, a sector gear 242, a gear ring seat 243 and a threaded sleeve 244;

[0047] The threaded sleeve 244 is threadedly connected to the outer sleeve 1, the inner sleeve 241 is rotatably connected to the threaded sleeve 244, one end of the inner sleeve 241 is fixedly connected to the ring gear seat 243, the outer side surface of the outer sleeve 1 is fixedly connected to the rotating seat 5, the sector gear 242 is rotatably connected to the rotating seat 5, and the sector gear 242 is meshed with the ring gear seat 243, and the arc-shaped bracket 21 is fixedly connected to the sector gear 242;

[0048] A sliding groove 245 is provided on the inner wall of the outer sleeve 1 along the length direction. A slide plate 246 is fixedly connected to the inner sleeve 241 , and the slide plate 246 is slidably connected in the sliding groove 245 .

[0049] In the driving assembly 24, the threaded sleeve 244 is rotated, and the threaded sleeve 244 extends to the outside of the outer sleeve 1 through thread transmission. The threaded sleeve 244 drives the inner sleeve 241 to extend outward, and the slide 246 slides along the slide groove 245. Then the inner sleeve 241 drives the ring gear seat 243 to push the sector gear 242, and the sector gear 242 drives the arc bracket 21 to rotate synchronously around the rotating seat 5, thereby changing the spacing between the arc brackets 21 and the detection range of the arc bracket 21.

[0050] In the embodiment of the present invention, Figure 4 As shown in FIG. 1 , as a preferred embodiment of the present invention, the water pumping assembly 3 includes a piston 31 , a pull rod 32 , a rubber tube 33 and a valve assembly 34 ;

[0051] The inner sleeve 241 is provided with a plurality of partitions 6, and the inner sleeve 241 is divided into a plurality of grooves by the partitions 6. The inner wall of each groove is slidingly and sealingly connected to a piston 31. Each groove is connected to an arc-shaped bracket 21 through a rubber tube 33. All pistons 31 are connected to a pull rod 32. The valve assembly 34 is used to control the unidirectional flow of water to the groove.

[0052] In the pumping assembly 3, when the pull rod 32 is pulled, the pull rod 32 drives all the pistons 31 to slide in their respective grooves. At this time, the air pressure in the grooves decreases, and the valve assembly 34 controls the water flow outside the arc-shaped bracket 21 to flow unidirectionally to the grooves.

[0053] In the embodiment of the present invention, Figure 4 As shown, as a preferred embodiment of the present invention, the valve assembly 34 includes a one-way inlet valve 341 and a one-way outlet valve 342. The side wall of each groove cavity is connected to the one-way inlet valve 341, and the water inlet of the one-way inlet valve 341 is connected to the rubber tube 33. Each piston 31 is connected to a one-way outlet valve 342, and the water outlet of the one-way outlet valve 342 is toward the outside of the inner sleeve 241.

[0054] In the valve assembly 34, the pull rod 32 drives all the pistons 31 to slide in their respective grooves. At this time, the air pressure in the groove is reduced, the one-way inlet valve 341 is turned on, and the water flow outside the arc-shaped bracket 21 flows unidirectionally to the groove, thereby performing water pumping detection; through the position of the float 41 in multiple grooves, the water seepage situation at each detection position can be observed, which is convenient for comparative observation.

[0055] In the embodiment of the present invention, Figure 2As shown, as a preferred embodiment of the present invention, the data display mechanism 4 includes a float 41 and a scale 42. The float 41 is provided in the groove cavity, and the side walls of the outer sleeve 1 and the inner sleeve 241 are provided with a strip observation window. The strip observation window is marked with a scale 42. When water flows into the groove cavity, the float 41 floats up, and the position of the float 41 is observed by the scale 42 to judge the water level.

[0056] Working principle:

[0057] Step (1): Pumping water to lower the groundwater level: Use well pumps or deep well water pumps to pump out the seepage water in the foundation pit to lower the groundwater level and reduce the amount of seepage;

[0058] Step (2): Insert the foundation pit water seepage detection device into the ground, hold the outer sleeve 1 and insert it downward into the water seepage part, all the arc brackets 21 drive the cutter 22 to break the soil, and when the arc bracket 21 is inserted into the predetermined position, pull the pull rod 32, and the pull rod 32 drives all the pistons 31 to slide in their respective grooves. At this time, the air pressure in the groove is reduced, the one-way inlet valve 341 is turned on, and the water flow outside the arc bracket 21 flows unidirectionally to the groove, thereby performing water pumping detection; through the position of the float 41 in multiple grooves, the water seepage situation at each detection position can be observed, which is convenient for comparative observation;

[0059] When the cutter 22 breaks the soil, the filter plate 23 is arranged on the back of the cutter 22. The arc-shaped bracket 21 is arc-shaped, which can prevent the filter plate 23 from contacting the soil layer when it moves downward or rotates around the rotating seat 5, and can effectively prevent the filter holes of the filter plate 23 from being blocked. The filter plate 23 filters the external soil blocks to avoid the filter plate 23 from being blocked.

[0060] By using three arc-shaped supports 21 to simultaneously pump water at different locations below the ground, variables can be effectively controlled, detection accuracy can be improved, and the degree of soil deformation can be determined;

[0061] Step (3): When the water content of the soil is less than the standard value, solidifying materials are injected into the soil around the foundation pit through grouting technology to form a blocking layer to prevent groundwater from penetrating into the foundation pit;

[0062] When the moisture content of the soil is greater than the standard value, an anti-seepage wall or anti-seepage isolation layer is set up around the foundation pit to isolate the infiltration of external water sources.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0064] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A method for treating water seepage in foundation pits during waterway regulation construction, characterized in that: The following steps are involved: Step (1): Pumping water to lower the groundwater level: Use well pumps or deep well water pumps to pump out the seepage water in the foundation pit to lower the groundwater level and reduce the amount of seepage; Step (2): inserting the foundation pit seepage detection device into the ground to detect the moisture content of the soil, thereby determining the degree of soil deformation; Step (3): When the water content of the soil is less than the standard value, solidifying materials are injected into the soil around the foundation pit through grouting technology to form a blocking layer to prevent groundwater from penetrating into the foundation pit; When the water content of the soil is greater than the standard value, an anti-seepage wall or anti-seepage isolation layer is set up around the foundation pit to isolate the infiltration of external water sources; The foundation pit water seepage detection device comprises: an outer casing (1), a soil breaking mechanism (2), a water pumping component (3) and a data display mechanism (4); The earth-breaking mechanism (2) is connected to the outer shell (1), the water pumping assembly (3) is arranged inside the outer shell (1), and the data display mechanism (4) is used to display the water pumping amount of the water pumping assembly (3); In step (2), the specific steps are: holding the outer cover (1) and inserting it downward into the water seepage part, inserting the soil breaking mechanism (2) into the ground, and then the water pumping component (3) pumping water, and the data display mechanism (4) displays the water pumping amount of the water pumping component (3), thereby detecting the water content of the soil and judging the degree of soil deformation; The soil-breaking mechanism (2) comprises an arc-shaped bracket (21), a cutter (22), a filter plate (23), and a drive assembly (24); The outer sleeve (1) is rotatably connected to a plurality of arc-shaped brackets (21), a side of the arc-shaped bracket (21) facing away from the outer sleeve (1) is fixedly connected to a cutter (22), a side of the arc-shaped bracket (21) close to the outer sleeve (1) is fixedly connected to a filter plate (23), and the filter plate (23) is communicated with the arc-shaped bracket (21); The drive assembly (24) includes an inner sleeve (241), a sector gear (242), a gear ring seat (243), and a threaded sleeve (244); The threaded sleeve (244) is threadedly connected to the outer sleeve (1), the inner sleeve (241) is rotatably connected to the threaded sleeve (244), one end of the inner sleeve (241) is fixedly connected to a gear ring seat (243), the outer side surface of the outer sleeve (1) is fixedly connected to a rotating seat (5), the sector gear (242) is rotatably connected to the rotating seat (5), and the sector gear (242) is meshed with the gear ring seat (243), and the arc-shaped bracket (21) is fixedly connected to the sector gear (242); The inner wall of the outer sleeve (1) is provided with a sliding groove (245) along the length direction, the inner sleeve (241) is fixedly connected with a slide plate (246), and the slide plate (246) is slidably connected in the sliding groove (245).

2. The method for treating water seepage in foundation pit during waterway regulation construction according to claim 1, characterized in that: The pumping assembly (3) comprises a piston (31), a pull rod (32), a rubber tube (33) and a valve assembly (34); The inner sleeve (241) is provided with a plurality of partitions (6), and the inner sleeve (241) is divided into a plurality of grooves by the partitions (6). The inner wall of each groove is slidably and sealedly connected to a piston (31). Each groove is connected to an arc-shaped bracket (21) through a rubber tube (33). All pistons (31) are connected to a pull rod (32) in common. The valve assembly (34) is used to control the unidirectional flow of water to the groove.

3. The method for treating water seepage in foundation pit during waterway regulation construction according to claim 2, characterized in that: The valve assembly (34) includes a one-way inlet valve (341) and a one-way outlet valve (342). The side wall of each groove cavity is connected to the one-way inlet valve (341), and the water inlet of the one-way inlet valve (341) is connected to the rubber tube (33). Each piston (31) is connected to the one-way outlet valve (342), and the water outlet of the one-way outlet valve (342) faces the outside of the inner sleeve (241).

4. The method for treating water seepage in foundation pits during waterway regulation construction according to claim 2, characterized in that: The data display mechanism (4) includes a float (41) and a scale (42). The float (41) is provided in each of the grooves. The side walls of the outer sleeve (1) and the inner sleeve (241) are provided with a strip observation window. The strip observation window is marked with a scale (42). When water flows into the groove, the float (41) floats up. The position of the float (41) is observed through the scale (42), thereby judging the water level.

Images