A steel well and construction method thereof

Abstract

The present invention provides a steel plate well and a construction method thereof. The steel plate well includes a wellbore. The wellbore is provided with several layers of horizontal support mechanisms for lateral support and vertical support mechanisms for longitudinal support. The horizontal support mechanisms and the vertical support mechanisms are fixedly connected to the inner wall of the wellbore. A correction mechanism is fixedly provided on the inner wall of the wellbore. The construction method is as follows: make a steel plate well; lay out the lines and excavate the foundation pit, and hang the steel plate; build the steel plate well, pour the swelling mud into the outside, dig the soil inside, and evenly balance the weight; if tilting occurs, use a counterweight to correct the deviation; spread fine sand in the well, build a cushion layer, and seal the bottom with concrete; the construction is completed after the concrete reaches the designed strength. When encountering an existing pipeline, the present invention can be lifted at any time to avoid damage to the pipeline; after lifting, the well position can be reselected and reused to avoid waste; when tilting occurs during sinking, it can be accurately corrected at any time to ensure the quality of the caisson construction; it can be manufactured and processed in the factory, reducing the number of on-site workers tying reinforcement and supporting formwork, and the construction cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of municipal facility construction, and in particular to a steel plate well and a construction method thereof. Background Art

[0002] In municipal pipe jacking projects, caissons are generally constructed as working wells and receiving wells for pipe jacking equipment. Traditional technology generally uses reinforced concrete caissons with a wall thickness of more than 400mm, which sink by gravity. However, there are generally certain errors in the underground pipeline survey before construction, and the concrete structure is too heavy. Therefore, when there are existing underground pipelines near the caisson, the pipelines cannot be controlled and recovered when they are discovered. Not only is it easy to damage the existing pipelines, but the caissons that cannot continue to sink can only be backfilled in place, and the caissons cannot be pulled out, which not only causes waste, but also affects other uses of the soil.

[0003] In addition, also because of the heavy weight of the caisson, once it tilts during the sinking process, it is difficult to correct the deviation. If the correction force is too small, the correction effect cannot be achieved, and the tilt may even be uncontrollable. If the correction force is too large, it may easily lead to excessive sinking. All of these reduce the quality of the project. Summary of the invention

[0004] The present invention aims to solve the deficiencies of the prior art and provides a steel plate well and a construction method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A steel plate well comprises a well shaft, which has a height of 3 to 8 m, a length of 4 to 6 m, a width of 3 to 5 m, and a wall thickness of 16 to 32 mm. The well shaft is provided with a plurality of layers of horizontal support mechanisms for lateral support and vertical support mechanisms for longitudinal support. Both the horizontal support mechanisms and the vertical support mechanisms are fixedly connected to the inner wall of the well shaft, and a deviation correction mechanism is fixedly provided on the inner wall of the well shaft.

[0007] Furthermore, a lifting ring is fixed on the top of the wellbore to facilitate lifting.

[0008] Furthermore, the cross section of the wellbore is a rounded rectangle, and the radius of curvature of the rounded corner is 400 to 800 mm.

[0009] Furthermore, the number of layers of the horizontal support mechanism is 2 to 6, the top layer is 0.5 to 0.8 m from the wellhead, and the bottom layer is 0.9 to 1.5 m from the well bottom.

[0010] Furthermore, the horizontal support mechanism includes a horizontal support ring, which is formed by bending and welding L100 angle steel, and the shape of the horizontal support ring is a ring that is adapted to the cross-section of the inner wall of the wellbore.

[0011] Furthermore, a plurality of support rods are provided on the horizontal support ring. The support rods are made of 100×10mm channel steel. Both ends of the support rods are fixedly connected to two opposite sides of the horizontal support ring.

[0012] Furthermore, the vertical supporting mechanism is a reinforcing rib arranged along the vertical direction.

[0013] Furthermore, the two ends of the reinforcing ribs located between the horizontal support mechanisms are respectively fixedly connected to the two adjacent horizontal support mechanisms, the bottom of the reinforcing ribs above the top horizontal support mechanism is fixedly connected to the top horizontal support mechanism, and the top of the reinforcing ribs below the bottom horizontal support mechanism is fixedly connected to the bottom horizontal support mechanism.

[0014] Furthermore, the reinforcing ribs are arranged at equal intervals on the wellbore.

[0015] Furthermore, the deviation-correcting mechanism is a bullneck for hanging a counterweight, and the counterweight may be a sandbag or an earthbag, and the weight of each counterweight on the deviation-correcting structure may be 100-1000kg.

[0016] Furthermore, the corbels are located at the intersection of the horizontal support mechanism and the vertical support mechanism.

[0017] Furthermore, the three surfaces of the corbel are respectively fixedly connected to the adjacent horizontal support mechanism, the vertical support mechanism and the inner wall of the wellbore.

[0018] Furthermore, the corbel includes a fixed part and a movable part, the fixed part is fixedly connected to the inner wall of the wellbore, the movable part is hinged to the fixed part, and a rope groove is provided on the top of the movable part for facilitating the hanging of a counterweight.

[0019] Furthermore, a knife groove is provided in the rope groove and a knife wheel for cutting the hanging rope of the counterweight is provided in the knife groove. The knife wheel is rotatably connected to the side wall of the knife groove, and the rotating shaft of the knife wheel is connected to a driving mechanism for driving the knife wheel to rotate.

[0020] Furthermore, the driving mechanism includes a sprocket, which is coaxially fixedly connected to the cutter wheel, and an annular chain is meshed on the sprocket, and one end of the annular chain away from the sprocket extends from the bottom of the movable part.

[0021] The specific construction steps of the steel plate well are as follows:

[0022] Step 1: According to the designed caisson depth, analyze the stress conditions during the construction and use of the steel plate well, select steel plates, channel steels, angle steels, round steels of corresponding specifications, and make the wellbore, horizontal support mechanism, vertical support mechanism, correction mechanism and lifting ring;

[0023] Step 2: Lay out the caisson at the designed location and excavate the foundation pit, and hoist the steel plate well to the location to be installed;

[0024] Step 3: Use pile driving equipment to drive a steel plate well above the steel plate well. During the driving process, pour expanded mud on the outside of the steel plate well to reduce the friction between the outside of the steel plate well and the soil layer, dig the soil on the inside, and evenly balance the weight on the deviation correction mechanism;

[0025] Step 4: The steel well sinks, the earth in the steel well is transported out, and the counterweight is gradually increased. If tilting occurs, the suspended counterweight sandbags or earthbags are gradually added from bottom to top on the correction structure on the side with less sinking until the steel well is balanced;

[0026] Step 5: Repeat steps 3 and 4 until the steel plate well sinks to the designed elevation, lay fine sand on the excavated soil layer in the well, lay a cushion layer, and lay bottom plate concrete at the position of the lowest horizontal reinforcement ring as the bottom seal;

[0027] Step six: After the bottom sealing concrete reaches the designed strength, the steel plate well construction is completed.

[0028] Furthermore, in step five, if an existing pipeline is encountered, the counterweight on the correction mechanism is first unloaded symmetrically and evenly, and then a lifting device is used to slowly lift the steel plate well out of the well site through the lifting ring.

[0029] Furthermore, in step six, after the bottom sealing concrete reaches the designed strength, some or all of the support rods can be cut and removed according to the requirements of the equipment installation in the well.

[0030] The beneficial effects of the present invention are as follows: when encountering an existing pipeline, the present invention can be lifted at any time to avoid damage to the pipeline; after lifting, the well position can be reselected and reused to avoid waste; when tilting occurs during sinking, the deviation can be accurately corrected at any time to ensure the quality of caisson construction; it can be manufactured and processed in a factory, reducing the number of on-site workers tying reinforcement and supporting formwork, and the construction cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a steel plate well;

[0032] Figure 2 This is a structural diagram of the steel well during construction;

[0033] Figure 3 It is a structural schematic diagram of the corbel in the first embodiment;

[0034] Figure 4 for Figure 3 Sectional view at AA in the middle;

[0035] Figure 5 for Figure 4 Sectional view at the middle BB;

[0036] Figure 6 for Figure 4 Sectional view at CC;

[0037] Figure 7 for Figure 1 The enlarged view of point D in the middle;

[0038] In the figure: 1-wellbore; 2-horizontal support mechanism; 21-horizontal support ring; 22-support rod; 3-vertical support mechanism; 4-correction mechanism; 41-fixed part; 42-movable part; 43-cutter wheel; 44-driving mechanism; 5-lifting ring;

[0039] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with embodiments:

[0041] Embodiment 1

[0042] As shown in the figure, a steel plate well includes a well shaft 1. The well shaft 1 is 5m high, 5m long, 4m wide, and 20mm thick. Several layers of horizontal support mechanisms 2 for lateral support and vertical support mechanisms 3 for longitudinal support are arranged in the well shaft 1. The horizontal support mechanisms 2 and the vertical support mechanisms 3 are both fixedly connected to the inner wall of the well shaft 1. A correction mechanism 4 is fixedly arranged on the inner wall of the well shaft 1.

[0043] Furthermore, a lifting ring 5 is fixedly provided on the top of the shaft 1 for facilitating lifting, and the lifting ring 5 is made of round steel with a diameter of 20 mm.

[0044] Furthermore, the cross section of the shaft 1 is a rounded rectangle, and the radius of curvature of the rounded corner is 600 mm.

[0045] Furthermore, the horizontal support mechanism 2 has 5 layers, the top layer is 0.6 m from the wellhead, and the bottom layer is 1.2 m from the well bottom.

[0046] Furthermore, the horizontal support mechanism 2 includes a horizontal support ring 21 , which is formed by bending and welding L100 angle steel, and the shape of the horizontal support ring 21 is annular and adapted to the cross-section of the inner wall of the wellbore 1 .

[0047] Furthermore, a plurality of support rods 22 are provided on the horizontal support ring 21 . The support rods 22 are made of 100×10 mm channel steel. Both ends of the support rods 22 are fixedly connected to two opposite sides of the horizontal support ring 21 .

[0048] Furthermore, the vertical supporting mechanism 3 is a reinforcing rib arranged along the vertical direction.

[0049] Furthermore, the two ends of the reinforcing ribs located between the horizontal support mechanisms 2 are respectively fixedly connected to the two adjacent horizontal support mechanisms 2, the bottom of the reinforcing ribs above the top horizontal support mechanism 2 is fixedly connected to the top horizontal support mechanism 2, and the top of the reinforcing ribs below the bottom horizontal support mechanism 2 is fixedly connected to the bottom horizontal support mechanism 2.

[0050] Furthermore, reinforcing ribs are arranged at equal intervals on the shaft 1 .

[0051] Furthermore, the deviation-correcting mechanism 4 is a bull leg for hanging a counterweight.

[0052] Furthermore, the corbels are located at the intersection of the horizontal support mechanism 2 and the vertical support mechanism 3 .

[0053] Furthermore, the three surfaces of the corbel are fixedly connected to the adjacent horizontal support mechanism 2 , the vertical support mechanism 3 and the inner wall of the shaft 1 , respectively.

[0054] Furthermore, the corbel includes a fixed portion 41 and a movable portion 42, the fixed portion 41 is fixedly connected to the inner wall of the shaft 1, the movable portion 42 is hinged to the fixed portion 41, and a rope groove is provided on the top of the movable portion 42 for suspending a counterweight.

[0055] Furthermore, a knife groove is provided in the rope groove and a knife wheel 43 for cutting the hanging rope of the counterweight is provided in the knife groove. The knife wheel 43 is rotatably connected to the side wall of the knife groove, and the rotating shaft of the knife wheel 43 is connected to a driving mechanism 44 for driving the knife wheel 43 to rotate.

[0056] Furthermore, the driving mechanism 44 includes a sprocket wheel, which is coaxially fixedly connected to the cutter wheel 43 , and an endless chain is meshed on the sprocket wheel, and one end of the endless chain away from the sprocket wheel extends out from the bottom of the movable portion 42 .

[0057] The specific construction steps of the steel plate well are as follows:

[0058] Step 1: According to the designed caisson depth, combined with the analysis of the stress conditions during the construction and use of the steel plate well and the conclusion of material selection, the wellbore 1, the horizontal support mechanism 2, the vertical support mechanism 3, the correction mechanism 4 and the lifting ring 5 are manufactured; the vertical support mechanism 3 and the wellbore 1, the horizontal support ring 21 and the wellbore 1, the support rod 22 and the horizontal support ring 21, the bracket and the wellbore 1, the lifting ring 5 and the wellbore 1 all need to be welded by carbon dioxide gas shielded welding, the welding specifications should be reasonable, the weld appearance should be beautiful, and the weld should not have slag inclusions, undercuts, pores, incomplete melting or incomplete penetration;

[0059] Step 2: Lay out the caisson at the designed location and excavate the foundation pit, and hoist the steel plate well to the location to be installed;

[0060] Step three, a steel plate well is driven above the steel plate well with a pile driving device. During the driving process, expanded mud is poured on the outside of the steel plate well to reduce the friction between the outside of the steel plate well and the soil layer, and the soil is excavated on the inside, and the weight is evenly balanced on the deviation correction mechanism 4. The specific weight balance method is to use sandbags as weights, tie the two ends of a rope to two 60kg sandbags respectively, and use the rope to hang the two sandbags on both sides of a bull leg respectively. The rope is limited in the rope groove to prevent the weight from falling off the bull leg due to the tilt of the steel plate well;

[0061] Step 4: The steel plate well sinks, and the earth in the steel plate well is transported out, and the counterweight is gradually increased. If tilting occurs, the suspended counterweight sandbags or earthbags are gradually added from bottom to top on the correction structure on the side with less sinking until the steel plate well is balanced. When the counterweight needs to be unloaded, the construction personnel only need to pull the ring chain to make the sprocket drive the cutter wheel 43 to rotate, thereby realizing the cutting of the rope. After cutting, the counterweights at both ends of the rope fall naturally. This quick way of unloading the counterweight makes the adjustment of the balance of the steel plate well faster and the balance is easier to control.

[0062] Step 5: Repeat steps 3 and 4 until the steel plate well sinks to the designed elevation, lay fine sand on the excavated soil layer in the well, lay a cushion layer, and lay bottom plate concrete at the position of the lowest horizontal reinforcement ring as the bottom seal;

[0063] Step six: After the bottom sealing concrete reaches the designed strength, the steel plate well construction is completed.

[0064] Embodiment 2

[0065] As shown in the figure, a steel plate well includes a well shaft 1. The well shaft 1 is 4m high, 5m long, 3m wide, and 20mm thick. Several layers of horizontal support mechanisms 2 for lateral support and vertical support mechanisms 3 for longitudinal support are arranged in the well shaft 1. The horizontal support mechanisms 2 and the vertical support mechanisms 3 are both fixedly connected to the inner wall of the well shaft 1. A correction mechanism 4 is fixedly arranged on the inner wall of the well shaft 1.

[0066] Furthermore, a lifting ring 5 is fixedly provided on the top of the shaft 1 for facilitating lifting, and the lifting ring 5 is made of round steel with a diameter of 20 mm.

[0067] Furthermore, the cross section of the shaft 1 is a rounded rectangle, and the radius of curvature of the rounded corner is 400 mm.

[0068] Furthermore, the horizontal support mechanism 2 has 5 layers, the top layer is 0.6 m from the wellhead, and the bottom layer is 1.2 m from the well bottom.

[0069] Furthermore, the horizontal support mechanism 2 includes a horizontal support ring 21 , which is formed by bending and welding L100 angle steel, and the shape of the horizontal support ring 21 is annular and adapted to the cross-section of the inner wall of the wellbore 1 .

[0070] Furthermore, a plurality of support rods 22 are provided on the horizontal support ring 21 . The support rods 22 are made of 100×10 mm channel steel. Both ends of the support rods 22 are fixedly connected to two opposite sides of the horizontal support ring 21 .

[0071] Furthermore, the vertical supporting mechanism 3 is a reinforcing rib arranged along the vertical direction.

[0072] Furthermore, the two ends of the reinforcing ribs located between the horizontal support mechanisms 2 are respectively fixedly connected to the two adjacent horizontal support mechanisms 2, the bottom of the reinforcing ribs above the top horizontal support mechanism 2 is fixedly connected to the top horizontal support mechanism 2, and the top of the reinforcing ribs below the bottom horizontal support mechanism 2 is fixedly connected to the bottom horizontal support mechanism 2.

[0073] Furthermore, reinforcing ribs are arranged at equal intervals on the shaft 1 .

[0074] Furthermore, the deviation-correcting mechanism 4 is a bull leg for hanging a counterweight.

[0075] Furthermore, the corbels are located at the intersection of the horizontal support mechanism 2 and the vertical support mechanism 3 .

[0076] Furthermore, the three surfaces of the corbel are fixedly connected to the adjacent horizontal support mechanism 2 , the vertical support mechanism 3 and the inner wall of the shaft 1 , respectively.

[0077] Furthermore, the corbel includes a fixed portion 41 and a movable portion 42, the fixed portion 41 is fixedly connected to the inner wall of the shaft 1, the movable portion 42 is hinged to the fixed portion 41, and a rope groove is provided on the top of the movable portion 42 for suspending a counterweight.

[0078] Furthermore, a knife groove is provided in the rope groove and a knife wheel 43 for cutting the hanging rope of the counterweight is provided in the knife groove. The knife wheel 43 is rotatably connected to the side wall of the knife groove, and the rotating shaft of the knife wheel 43 is connected to a driving mechanism 44 for driving the knife wheel 43 to rotate.

[0079] Furthermore, the driving mechanism 44 includes a sprocket wheel, which is coaxially fixedly connected to the cutter wheel 43 , and an endless chain is meshed on the sprocket wheel, and one end of the endless chain away from the sprocket wheel extends out from the bottom of the movable portion 42 .

[0080] The specific construction steps of the steel plate well are as follows:

[0081] Step 1: According to the designed caisson depth, combined with the analysis of the stress conditions during the construction and use of the steel plate well and the conclusion of material selection, the wellbore 1, the horizontal support mechanism 2, the vertical support mechanism 3, the correction mechanism 4 and the lifting ring 5 are manufactured; the vertical support mechanism 3 and the wellbore 1, the horizontal support ring 21 and the wellbore 1, the support rod 22 and the horizontal support ring 21, the bracket and the wellbore 1, the lifting ring 5 and the wellbore 1 all need to be welded by carbon dioxide gas shielded welding, the welding specifications should be reasonable, the weld appearance should be beautiful, and the weld should not have slag inclusions, undercuts, pores, incomplete melting or incomplete penetration;

[0082] Step 2: Lay out the caisson at the designed location and excavate the foundation pit, and hoist the steel plate well to the location to be installed;

[0083] Step three, a steel plate well is driven above the steel plate well with a pile driving device. During the driving process, expanded mud is poured on the outside of the steel plate well to reduce the friction between the outside of the steel plate well and the soil layer, and the soil is excavated on the inside, and the weight is evenly balanced on the deviation correction mechanism 4. The specific weight balance method is to use sandbags as weights, tie the two ends of a rope to two 60kg sandbags respectively, and use the rope to hang the two sandbags on both sides of a bull leg respectively. The rope is limited in the rope groove to prevent the weight from falling off the bull leg due to the tilt of the steel plate well;

[0084] Step 4: The steel plate well sinks, and the earth in the steel plate well is transported out, and the counterweight is gradually increased. If tilting occurs, the suspended counterweight sandbags or earthbags are gradually added from bottom to top on the correction structure on the side with less sinking until the steel plate well is balanced. When the counterweight needs to be unloaded, the construction personnel only need to pull the ring chain to make the sprocket drive the cutter wheel 43 to rotate, thereby realizing the cutting of the rope. After cutting, the counterweights at both ends of the rope fall naturally. This quick way of unloading the counterweight makes the adjustment of the balance of the steel plate well faster and the balance is easier to control.

[0085] Step five, repeat steps three and four until the distance to the design benchmark is 2.3m, and the existing cable pipeline is found directly below the steel plate well. At this time, the method of unloading the counterweight in step four is used to quickly and evenly unload the counterweight on the correction mechanism 4. Then, a lifting equipment is used to slowly lift the steel plate well out of the well position through the lifting ring 5. The construction is terminated and the steel plate well does not damage the cable pipeline.

[0086] Embodiment 3

[0087] As shown in the figure, a steel plate well includes a well shaft 1. The well shaft 1 is 5m high, 5m long, 4m wide, and 20mm thick. Several layers of horizontal support mechanisms 2 for lateral support and vertical support mechanisms 3 for longitudinal support are arranged in the well shaft 1. The horizontal support mechanisms 2 and the vertical support mechanisms 3 are both fixedly connected to the inner wall of the well shaft 1. A correction mechanism 4 is fixedly arranged on the inner wall of the well shaft 1.

[0088] Furthermore, a lifting ring 5 is fixedly provided on the top of the shaft 1 for facilitating lifting, and the lifting ring 5 is made of round steel with a diameter of 20 mm.

[0089] Furthermore, the cross section of the shaft 1 is a rounded rectangle, and the radius of curvature of the rounded corner is 500 mm.

[0090] Furthermore, the horizontal support mechanism 2 has 5 layers, the top layer is 0.6 m away from the wellhead, and the bottom layer is 1.2 m away from the well bottom.

[0091] Furthermore, the horizontal support mechanism 2 includes a horizontal support ring 21 , which is formed by bending and welding L100 angle steel, and the shape of the horizontal support ring 21 is annular and adapted to the cross-section of the inner wall of the wellbore 1 .

[0092] Furthermore, a plurality of support rods 22 are provided on the horizontal support ring 21 . The support rods 22 are made of 100×10 mm channel steel. Both ends of the support rods 22 are fixedly connected to two opposite sides of the horizontal support ring 21 .

[0093] Furthermore, the vertical supporting mechanism 3 is a reinforcing rib arranged along the vertical direction.

[0094] Furthermore, the two ends of the reinforcing ribs located between the horizontal support mechanisms 2 are respectively fixedly connected to the two adjacent horizontal support mechanisms 2, the bottom of the reinforcing ribs above the top horizontal support mechanism 2 is fixedly connected to the top horizontal support mechanism 2, and the top of the reinforcing ribs below the bottom horizontal support mechanism 2 is fixedly connected to the bottom horizontal support mechanism 2.

[0095] Furthermore, reinforcing ribs are arranged at equal intervals on the shaft 1 .

[0096] Furthermore, the deviation-correcting mechanism 4 is a bull leg for hanging a counterweight.

[0097] Furthermore, the corbels are located at the intersection of the horizontal support mechanism 2 and the vertical support mechanism 3 .

[0098] Furthermore, the three surfaces of the corbel are fixedly connected to the adjacent horizontal support mechanism 2 , the vertical support mechanism 3 and the inner wall of the shaft 1 , respectively.

[0099] Furthermore, a rope groove is provided on the top of the corbel for hanging a counterweight.

[0100] The specific construction steps of the steel plate well are as follows:

[0101] Step 1: According to the designed caisson depth, combined with the analysis of the stress conditions during the construction and use of the steel plate well and the conclusion of material selection, the wellbore 1, the horizontal support mechanism 2, the vertical support mechanism 3, the correction mechanism 4 and the lifting ring 5 are manufactured; the vertical support mechanism 3 and the wellbore 1, the horizontal support ring 21 and the wellbore 1, the support rod 22 and the horizontal support ring 21, the bracket and the wellbore 1, the lifting ring 5 and the wellbore 1 all need to be welded by carbon dioxide gas shielded welding, the welding specifications should be reasonable, the weld appearance should be beautiful, and the weld should not have slag inclusions, undercuts, pores, incomplete melting or incomplete penetration;

[0102] Step 2: Lay out the caisson at the designed location and excavate the foundation pit, and hoist the steel plate well to the location to be installed;

[0103] Step three, a steel plate well is driven above the steel plate well with a pile driving device. During the driving process, expanded mud is poured on the outside of the steel plate well to reduce the friction between the outside of the steel plate well and the soil layer, and the soil is excavated on the inside, and the weight is evenly balanced on the deviation correction mechanism 4. The specific weight balance method is to use sandbags as weights, tie the two ends of a rope to two 60kg sandbags respectively, and use the rope to hang the two sandbags on both sides of a bull leg respectively. The rope is limited in the rope groove to prevent the weight from falling off the bull leg due to the tilt of the steel plate well;

[0104] Step 4: The steel well sinks, the earth in the steel well is transported out, and the counterweight is gradually increased. If tilting occurs, the suspended counterweight sandbags or earthbags are gradually added from bottom to top on the correction structure on the side with less sinking until the steel well is balanced;

[0105] Step 5: Repeat steps 3 and 4 until the steel plate well sinks to the designed elevation, lay fine sand on the excavated soil layer in the well, lay a cushion layer, and lay bottom plate concrete at the position of the lowest horizontal reinforcement ring as the bottom seal;

[0106] Step six, after the bottom sealing concrete reaches the designed strength, it is found that the support rod 22 interferes with the installation position of the domestic equipment. The interfering support rod is removed and the steel plate well construction is completed.

[0107] The present invention has been exemplarily described above in conjunction with specific embodiments. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various improvements are made using the method concept and technical solution of the present invention, or they are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A steel plate well, comprising a wellbore (1), characterized in that: A plurality of layers of horizontal support mechanisms (2) for lateral support and vertical support mechanisms (3) for longitudinal support are arranged in the wellbore (1); the horizontal support mechanisms (2) and the vertical support mechanisms (3) are both fixedly connected to the inner wall of the wellbore (1); and a deviation correction mechanism (4) is fixedly arranged on the inner wall of the wellbore (1); The deviation correction mechanism (4) is a bracket for hanging a counterweight. The brackets are located at the intersection of the horizontal support mechanism (2) and the vertical support mechanism (3). The three surfaces of the bracket are respectively fixedly connected to the adjacent horizontal support mechanism (2), the vertical support mechanism (3) and the inner wall of the shaft (1). The bracket comprises a fixed part (41) and a movable part (42). The fixed part (41) is fixedly connected to the inner wall of the shaft (1). The movable part (42) is hinged to the fixed part (41). A rope groove for facilitating hanging of the counterweight is provided at the top of the movable part (42). A knife groove is provided in the rope groove. A knife wheel (43) for cutting a hanging rope for the counterweight is provided in the knife groove. The knife wheel (43) is rotatably connected to the side wall of the knife groove. The rotating shaft of the knife wheel (43) is connected to a driving mechanism (44) for driving the knife wheel (43) to rotate.

2. The steel well according to claim 1, characterized in that: A lifting ring (5) is fixedly provided at the top of the shaft (1) for facilitating lifting.

3. The steel well according to claim 1, characterized in that: The horizontal support mechanism (2) comprises a horizontal support ring (21). The horizontal support ring (21) is in the shape of a ring adapted to the cross section of the inner wall of the wellbore (1). A plurality of support rods (22) are provided on the horizontal support ring (21). The two ends of the support rods (22) are respectively fixedly connected to two opposite sides of the horizontal support ring (21).

4. The steel well according to claim 1, characterized in that: The vertical support mechanism (3) is a reinforcing rib arranged along the vertical direction.

5. The steel well according to claim 1, characterized in that: The driving mechanism (44) comprises a sprocket wheel, which is coaxially fixedly connected to the cutter wheel (43), an endless chain is meshed on the sprocket wheel, and one end of the endless chain away from the sprocket wheel extends from the bottom of the movable part (42).

6. A method for constructing a steel well, characterized in that: The specific steps are as follows: Step 1: According to the designed caisson depth, analyze the stress conditions during the construction and use of the steel plate well, select steel plates, channel steels, angle steels, and round steels of corresponding specifications, and make the wellbore (1), the horizontal support mechanism (2), the vertical support mechanism (3), the correction mechanism (4), and the lifting ring (5); Step 2: Lay out the caisson at the designed location and excavate the foundation pit, and hoist the steel plate well to the location to be installed; Step 3: Use a pile driving device to drive a steel plate well above the steel plate well. During the driving process, pour expanded mud on the outside of the steel plate well to reduce the friction between the outside of the steel plate well and the soil layer, dig the soil on the inside, and evenly balance the weight on the deviation correction mechanism (4); Step 4: The steel well sinks, the earth in the steel well is transported out, and the counterweight is gradually increased. If tilting occurs, the suspended counterweight sandbags or earthbags are gradually added from bottom to top on the correction structure on the side with less sinking until the steel well is balanced; Step 5: Repeat steps 3 and 4 until the steel plate well sinks to the designed elevation, lay fine sand on the excavated soil layer in the well, lay a cushion layer, and lay bottom plate concrete at the position of the lowest horizontal reinforcement ring as the bottom seal; Step six: After the bottom sealing concrete reaches the designed strength, the steel plate well construction is completed.

7. The method for constructing a steel well according to claim 6, characterized in that: In step 5, if an existing pipeline is encountered, the counterweight on the deviation correction mechanism (4) is first unloaded symmetrically and evenly, and then the steel plate well is slowly lifted out of the well site using a lifting device through the lifting ring (5).

8. The method for constructing a steel well according to claim 6, characterized in that: In step six, after the bottom sealing concrete reaches the designed strength, some or all of the support rods (22) can be cut and removed according to the requirements of the equipment installation in the well.

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