An internal drainage board cutting device and method for large-thickness hydraulic fill sand soil

Abstract

The present invention discloses a cutting device for drainage plates in large-thickness hydraulic fill sand. The inserting machine inserts the drainage plates into the sand, and the hydraulic system provides power for the inserting machine. The device includes a ranging system, a drainage plate cutting system, and a control system. Among them, the cutting system includes a mandrel and a mandrel column base. A horizontal slide rail is horizontally arranged inside the mandrel column base. One end of the handle is slidably arranged inside the horizontal slide rail, and the other end of the handle is connected to a serrated blade. The ranging system is used to measure the initial position of the top of the mandrel and the distance between the initial position and the termination position. When the mandrel is lifted, the end of the handle connected to the serrated blade can slide out from the storage space of the drainage plate cutting plate of the mandrel, and the serrated blade can rotate. The present invention can automatically cut the drainage plates in the sand, reduce the cost of manual cutting of drainage plates, and also greatly reduce the usage amount of drainage plates in the soft soil foundation with a large-thickness overlying hydraulic fill sand layer, thereby reducing the material cost.

Description

Technical Field

[0001] The present invention relates to the field of cutting drainage plates in hydraulic fill sand. More specifically, the present invention relates to a cutting device and method for drainage plates in thick hydraulic fill sand. Background Art

[0002] As a commonly used method for foundation treatment, under the condition of overlying load on soft soil foundation, pore water is slowly discharged through the installed plastic drainage plates, the pore volume decreases accordingly, and the foundation undergoes consolidation deformation. At the same time, as the excess hydrostatic pressure gradually dissipates, the effective stress gradually increases, and the strength of soft soil gradually grows, thereby achieving the purpose of foundation drainage consolidation.

[0003] In recent years, there have been many soft soil sites with thick hydraulic fill sand layers in hydraulic fill reclamation projects. The thickness of the overlying sand layer in this site is greater than or equal to the thickness of the soft soil layer. If the surcharge preloading method is adopted and the drainage plates are driven from the ground surface through the sand layer to the bottom of the soft soil layer, it will cause great material waste. In response to the national energy conservation and environmental protection requirements, many technical personnel have put forward the requirement of cutting drainage plates in sand, but there is no solution yet. Summary of the Invention

[0004] In order to achieve these and other advantages according to the present invention, on the one hand, a preferred embodiment of the present invention provides a cutting device for drainage plates in thick hydraulic fill sand. The inserter inserts the drainage plate into the sand, and the hydraulic system provides power for the inserter, including a ranging system, a drainage plate cutting system, and a control system. Among them,

[0005] The cutting system includes a mandrel and a mandrel column foot. The mandrel column foot is divided into a storage space for the cutting device and a space for the up and down movement of the drainage plate. A horizontal slide rail is horizontally arranged in the storage space for the mandrel drainage plate cutting. One end of the handle is slidably arranged inside the horizontal slide rail, and the other end of the handle is connected to a serrated blade;

[0006] The ranging system is used to determine the cutting position of the drainage plate;

[0007] The control system can control the lifting and lowering of the mandrel, and control the handle and the serrated blade to slide out and rotate to cut the drainage plate;

[0008] When the mandrel is lifted, one end of the handle connected to the serrated blade can slide out of the storage space for the mandrel drainage plate cutting, and the serrated blade can rotate.

[0009] Preferably, in the cutting device for drainage plates in thick hydraulic fill sand, the ranging system includes a rangefinder, a data transmission cable, and a calculation system. The rangefinder and the calculation system are connected by a data transmission cable. Among them, the rangefinder is installed on the frame of the inserter and has the same initial height as the top of the mandrel.

[0010] Preferably, in the large-thickness hydraulic fill sand soil inner drainage board cutting device, the horizontal slide rail is inclined, and the handle can move on the horizontal slide rail under its own gravity.

[0011] Preferably, in the large-thickness hydraulic fill sand soil inner drainage board cutting device, the length of the handle is the length required for the installation pile shoe of the next drainage board. When installing the next drainage board, the pile shoe surface is attached to the bottom of the core shaft column foot.

[0012] On the other hand, a preferred embodiment of the present invention provides a cutting method for the large-thickness hydraulic fill sand soil inner drainage board cutting device, including the following steps:

[0013] Use a ranging system to record the initial position of the top of the core shaft and the distance between the initial position and the termination position. The calculation system calculates the difference S3 between the termination position of the top of the core shaft and the initial height based on the information recorded by the ranging system, and in combination with the thickness of the sand soil, the reserved length of the drainage board, and the thickness of the soft soil.

[0014] When the inserter reaches the bottom of the soft soil layer driven by the control system and the control system controls the core shaft to start lifting, the control system controls the handle and the serrated blade to slide out from the storage space of the cutting board device.

[0015] When the core shaft is lifted to the drainage board cutting position, the serrated blade starts to rotate, the handle moves along the horizontal slide rail under the action of gravity, and the serrated blade cuts off the drainage board.

[0016] The core shaft continues to be lifted above the ground surface, the pile shoe is installed, and the construction of the next drainage board is carried out.

[0017] Preferably, in the large-thickness hydraulic fill sand soil inner drainage board cutting method, the calculation system calculates the difference S3 between the termination position of the top of the core shaft and the initial height according to the following formula: the difference S3 between the termination position of the top of the core shaft and the initial height = the total length S of the core shaft - the thickness S1 of the sand soil + the reserved length S2 of the drainage board in the sand soil.

[0018] The present invention has at least the following beneficial effects: The large-thickness hydraulic fill sand soil inner plastic drainage board cutting device and method provided by the present invention can automatically cut the drainage board in the sand soil, reduce the cost of manual drainage board cutting, and at the same time, can greatly reduce the usage amount of the drainage board in the soft soil foundation with a large-thickness overlying hydraulic fill sand layer, reducing the material cost.

[0019] Other advantages, objectives, and features of the present invention will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the present invention. Description of the Drawings

[0020] Figure 1It is a schematic diagram of the use of the cutting device for the inner drainage board of thick hydraulic fill sand in the present invention.

[0021] Figure 2 It is a plan view of the cutting device for the inner drainage board of thick hydraulic fill sand in the present invention.

[0022] Figure 3 It is a schematic diagram of the use of the cutting device for the inner drainage board of thick hydraulic fill sand in the present invention. Detailed implementation manners

[0023] The following further elaborates the present invention in conjunction with the attached drawings, so that those skilled in the art can implement it with reference to the text of the specification.

[0024] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description can be applied to other implementation manners, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present invention.

[0025] Those skilled in the art should understand that in the disclosure of the present invention, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations to the present invention.

[0026] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" should not be construed as a limitation on the quantity.

[0027] As Figures 1-3 shown, on the one hand, a preferred implementation manner of the present invention provides a cutting device for the inner drainage board of thick hydraulic fill sand. The inserter inserts the drainage board into the sand, and the hydraulic system provides power for the inserter. The cutting device for the inner drainage board of thick hydraulic fill sand includes a ranging system, a drainage board cutting system, and a control system. Among them,

[0028] The cutting system includes a mandrel 100 and a mandrel shoe 200. The interior of the mandrel shoe 200 is longitudinally partitioned into a cutting plate device storage space 210 and a drainage plate up-and-down movement space 220. Both the cutting plate device storage space 210 and the drainage plate up-and-down movement space 220 are horizontally arranged, and a horizontal slide rail 300 is horizontally arranged inside. One end of a handle 400 is slidably arranged inside the horizontal slide rail 300, and the other end of the handle 400 is connected to a serrated blade 500. Among them, the interior of the mandrel shoe 200 is hollow, and the lower drainage plate up-and-down movement space 220 is for the up-and-down movement of the drainage plate. The lower part of the drainage plate up-and-down movement space 220 is open, and the drainage plate is inserted into the soil layer through the drainage plate up-and-down movement space 220.

[0029] The ranging system is used to determine the position of the cutting plate of the drainage plate in the hydraulic fill sand. The control system can control the lifting and lowering of the mandrel 100. When the mandrel 100 is lifted, the end of the handle 400 connected to the serrated blade 500 can slide out of the cutting plate device storage space, and the serrated blade 500 can rotate.

[0030] In the above implementation, when the mandrel 100 and the mandrel shoe 200 are lifted upward, the end of the handle 400 connected to the serrated blade 500 can slide out of the cutting plate device storage space and is vertically arranged until it is lifted to a preset position. The serrated blade 500 can rotate under the drive of an external power mechanism. As the handle moves in the horizontal slide rail, at the same time, the serrated blade 500 rotates. During this process, the serrated blade cuts off the drainage plate.

[0031] In another preferred implementation, the ranging system includes a rangefinder, a data transmission cable, and a calculation system. The rangefinder and the calculation system are connected through the data transmission cable. Among them, the rangefinder is installed on the frame of the inserter and is at the same initial height as the top end of the mandrel 100.

[0032] In another preferred implementation, the horizontal slide rail 300 is inclined. The purpose of this setting is to enable the handle 400 to move in the horizontal slide rail under its own gravity without the need for external force, thus achieving automatic movement.

[0033] In another preferred implementation, the length of the handle 400 is the length required for the pile shoe when installing the next drainage plate. The lengths of the pile shoes required at different construction sites are inconsistent, and different lengths are selected according to the actual situation.

[0034] On the other hand, a preferred implementation of the present invention provides a method for cutting drainage plates in thick hydraulic fill sand, including the following steps:

[0035] Record the initial height of the top of the mandrel 100, the thickness of the sandy soil, the thickness of the soft soil, and the reserved length of the drainage board in the sandy soil with a ranging system. Then, the measurement system calculates the difference S3 between the final position of the top of the mandrel 100 and the initial height according to the following formula;

[0036] The formula is: the difference S3 between the final position of the top of the mandrel 100 and the initial height = the total length S of the mandrel 100 - the thickness of the sandy soil S1 + the reserved length S2 of the drainage board in the sandy soil.

[0037] When the inserter reaches the bottom of the soft soil layer driven by the hydraulic system and the control system controls the mandrel 100 to start lifting, the control system controls the handle 400 and the serrated blade 500 to slide out from the storage space 210 of the cutting plate device;

[0038] When the mandrel 100 is lifted to the drainage board cutting position, the serrated blade 500 starts to rotate, and the handle 400 moves along the horizontal slide rail 300 under the action of gravity, and the serrated blade 500 cuts off the drainage board; specifically, assume the length of the mandrel is S, the thickness of the sandy soil is S1, the reserved length of the drainage board in the sandy soil is S2, and the thickness of the soft soil is S3, S > (S1 + S2). Install the rangefinder on the frame at the same height as the initial height of the top of the mandrel. During the upward movement of the mandrel, use the rangefinder to measure the distance S3 from the top of the mandrel to the initial height. When S3 = S - S1 + S2, start cutting the drainage board.

[0039] The mandrel 100 continues to be lifted above the ground surface, install the pile shoe, and carry out the construction of the next drainage board.

[0040] In summary, the plastic drainage board cutting device and method provided by the present invention can automatically cut the board in the sandy soil, reduce the cost of manual cutting of the board, and at the same time, can greatly reduce the usage amount of the drainage board for the soft soil foundation with a large thickness of overlying reclaimed sandy soil layer, and reduce the material cost.

[0041] Specifically, for example, in a certain soft soil site, according to the traditional drainage board driving method, the driving depth is 20 m (sand layer thickness 10 m + soft soil thickness 10 m), plus the reserved length of 0.5 m at the top, then the length of a single drainage board is required to be 20.5 m; according to the concept of cutting the board in the sand layer, the driving depth is 10 m (soft soil layer thickness 10 m), and the reserved length of the drainage board in the sand layer is 0.5 m, then the length of a single drainage board is required to be 10.5 m; compared with the traditional inserter method, it saves about (20.5 - 10.5) / 20.5 * 100% = 48.8% of the material cost.

[0042] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those skilled in the art, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples described herein.

Claims

1. A cutting method for drainage boards in thick hydraulic fill sand, characterized in that, The inserting board machine inserts the drainage board into the sandy soil, and the hydraulic system provides power for the inserting board machine. The drainage board cutting device in the thick hydraulic fill sandy soil includes a ranging system, a drainage board cutting system, and a control system. Among them, The cutting system includes a mandrel and a mandrel column foot. The inside of the mandrel column foot is divided into a cutting plate device storage space and a drainage board up and down movement space. A horizontal slide rail is horizontally arranged in the mandrel drainage board cutting plate storage space. One end of the handle is slidably arranged inside the horizontal slide rail, and the other end of the handle is connected to a serrated blade; The ranging system is used to determine the position of the drainage board cutting plate; The control system can control the lifting and lowering of the mandrel, and control the handle and the serrated blade to slide out and rotate to cut the drainage board; When the mandrel is lifted, one end of the handle connected to the serrated blade can slide out of the mandrel drainage board cutting plate storage space, and the serrated blade can rotate; The ranging system includes a rangefinder, a data transmission cable, and a calculation system. The rangefinder and the calculation system are connected by the data transmission cable. Among them, the rangefinder is installed on the frame of the inserting board machine and has the same initial height as the top of the mandrel; The horizontal slide rail is inclined, and the handle can move along the horizontal slide rail under its own gravity; The length of the handle is the length required for installing the pile shoe of the next drainage board. When installing the next drainage board, the pile shoe surface is attached to the bottom of the mandrel column foot Including the following steps: Use the ranging system to record the initial position of the top of the mandrel and the distance between the initial position and the termination position. The calculation system calculates the difference S3 between the termination position of the top of the mandrel and the initial height according to the information recorded by the ranging system, combined with the thickness of the sandy soil, the reserved length of the drainage board, and the thickness of the soft soil; When the inserting board machine reaches the bottom of the soft soil layer driven by the control system and the control system controls the mandrel to start lifting, the control system controls the handle and the serrated blade to slide out of the cutting plate device storage space; When the mandrel is lifted to the drainage board cutting plate position, the serrated blade starts to rotate, and the handle moves along the horizontal slide rail under the action of gravity, and the serrated blade cuts off the drainage board; The mandrel continues to be lifted above the ground surface, the pile shoe is installed, and the construction of the next drainage board is carried out.

2. The method for cutting drainage plates in thick hydraulic fill sand soil according to claim 1, wherein, The calculation system calculates the difference S3 between the termination position of the top of the mandrel and the initial height according to the following formula: The difference S3 between the termination position of the top of the mandrel and the initial height = the total length S of the mandrel - the thickness S1 of the sandy soil + the reserved length S2 of the drainage board in the sandy soil.

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