Submerged line boundary post for construction land acquisition and immigrant engineering surveying

Abstract

The invention discloses a submerged line boundary pile for construction land acquisition and immigrant engineering survey, which comprises a pile body (4), the top surface of the pile body is set as a mark surface (11), the pile body comprises a first barrel and a second barrel, the cross section area of the first barrel is larger than that of the second barrel, and the first barrel is provided with a plurality of grooves; the lower end of the first cylinder is connected with the middle of the upper end of the second cylinder, the first cylinder is filled with concrete (5), the upper portion of the second cylinder is provided with a mortar pouring opening (7), mortar overflow holes (9) and fixing steel bars (10) are distributed on a cylinder body of the second cylinder, and the fixing steel bars transversely penetrate through the second cylinder and are fixedly connected with the second cylinder. The invention has the functional characteristics of environmental protection, light weight, durability, attractive appearance and high efficiency.

Description

Technical Field

[0001] The present invention relates to engineering boundary stakes, and more particularly to a submerged line boundary stake for construction land requisition and resettlement project surveying. Background Art

[0002] The submerged line boundary stake for construction land requisition and resettlement project surveying is an important basis during the physical index investigation stage of reservoir resettlement from the issuance of the suspension notice to the approval during the feasibility study stage of hydropower projects, and is an important part of the resettlement planning and design. During the physical index investigation stage, different types of boundary stakes (e.g., population stakes, land stakes, water level stakes, etc.) correspond to different submerged objects respectively, and are used for boundary confirmation, ownership clarification, index registration, planning and design, etc. of various objects during the physical index investigation stage, and are important achievements before the hydropower project is approved for construction.

[0003] The submerged boundary stakes in traditional hydropower project surveying mainly include types such as reinforced concrete stakes, wooden stakes, and rock engraved marks. The most commonly used concrete boundary stakes in permanent boundary stakes have the biggest problem of being heavy and not conducive to handling. At the same time, they also have the disadvantages that the stake surface is prone to weathering and not suitable for long-term use; the surface of the concrete boundary stake is not beautiful and it is difficult to be observed and found from a distance during use; during the on-site embedding process of the concrete boundary stake, the working surface is large, the concrete consumption is large, and the workload is large, etc., which reduces its versatility and the working efficiency of boundary stake surveying and setting, and is not conducive to energy conservation and environmental protection. Summary of the Invention

[0004] The technical problem to be solved by the present invention is, aiming at the problem that the existing concrete submerged boundary stake is heavy and not convenient to handle, one of the purposes of the present invention is to provide a submerged line boundary stake for construction land requisition and resettlement project surveying that is convenient to handle.

[0005] To solve the above technical problem, the present invention adopts the following technical solutions:

[0006] A submerged line boundary stake for construction land requisition and resettlement project surveying, including a stake body, the top surface of the stake body is set as a stake surface. Its structural feature is that the stake body includes a first cylinder and a second cylinder. The cross-sectional area of the first cylinder is larger than that of the second cylinder. The lower end of the first cylinder is connected to the middle of the upper end of the second cylinder. The first cylinder is filled with concrete. A mortar pouring port is arranged on the upper part of the second cylinder. Mortar overflow holes and fixing steel bars are distributed on the cylinder wall of the second cylinder. The fixing steel bars penetrate through the second cylinder and are fixedly connected with the second cylinder.

[0007] Preferably, the first cylinder and the second cylinder are respectively made of stainless steel material, and the fixing steel bars are distributed at different height positions of the second cylinder, and the ends of the fixing steel bars extend out of the second cylinder.

[0008] Preferably, the first cylinder and the second cylinder are made of 304 stainless steel material with a thickness of 1-3 mm.

[0009] Preferably, the diameter of the first cylinder is Ф140mm, so as to meet the requirement of 100mm side length of the square marking surface on the upper part of the concrete boundary stake in the specification, and at the same time make the marking surface engraving more reasonably arranged and clearly visible; the diameter of the second cylinder is Ф60mm, so as to facilitate the transportation of the boundary stake.

[0010] Preferably, when the flood line boundary stake is in use, cement mortar is injected into the second cylinder, and the cement mortar overflows from the mortar overflow hole to wrap the surrounding soil and the second cylinder.

[0011] Preferably, a back plate is installed on the back of the marking surface to prevent laser engraving and surface penetration and damage during welding of the back of the marking surface and the surrounding pile bodies.

[0012] Preferably, the overall length of the pile body is 1-1.4 m, and the overall weight is 5-10 kg.

[0013] Preferably, the diameter of the mortar overflow holes is Ф20 mm and they are evenly distributed, so that when burying the piles, the cement mortar poured into the second cylinder can fully flow out from the mortar overflow holes to enhance the stability of the boundary piles.

[0014] Preferably, the mortar pouring port is a square opening with a side length of 10-40 mm. During grouting, the mortar pouring equipment, the conduit, the funnel and the like are used in combination, so that the cement mortar can flow smoothly through the conduit.

[0015] Preferably, the fixing steel bars are conventional steel bars with a diameter of 5 mm and a length of 120 mm-140 mm, and the number is controlled at 3-7, in order to firmly fix the inside of the pile body and the pile body and the external soil.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) The present invention adopts a design of being larger at the top and smaller at the bottom, and only pre-filling concrete in the upper first cylinder, which not only greatly reduces the weight of the boundary stake;

[0018] 2) The present invention uses stainless steel combined with concrete, which reduces the excavation surface of on-site operations and the amount of concrete used, which not only ensures the firmness and durability of the boundary stakes but also ensures their environmental protection and aesthetics. The excavation or covering operation surface and workload during transportation and burial are small, which is convenient for improving efficiency, and the amount of concrete used is greatly reduced, which is beneficial to environmental protection;

[0019] 3) The present invention has a simple principle and structure, a very low manufacturing cost, and is convenient for mass production and burial;

[0020] 4) The present invention is made of stainless steel material, with a smooth and beautiful surface, easy to be discovered and recognized from a long distance. The surface of the sign is engraved with laser characters, which is convenient for long-term use and preservation in the wild. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the submerged line boundary stake for construction land acquisition and resettlement project survey of the present invention.

[0023] Figure 2 It is a surface diagram of an embodiment of the submerged line boundary stake for construction land acquisition and resettlement project survey of the present invention.

[0024] In the figure: 1 - boundary category and number, where L represents the left bank and R represents the right bank;

[0025] 2 - center mark;

[0026] 3 - embedding date;

[0027] 4 - pile body; 41 - first cylinder; 42 - second cylinder;

[0028] 5 - filling concrete;

[0029] 6 - ground surface;

[0030] 7 - mortar pouring port;

[0031] 8 - cement mortar;

[0032] 9 - mortar overflow hole;

[0033] 10 - fixing steel bar;

[0034] 11 - sign surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following further describes the present invention in conjunction with specific preferred embodiments, but does not limit the protection scope of the present invention accordingly.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship 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, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Please refer to Figure 1 , an embodiment of the immersion line boundary stake for the construction land acquisition and resettlement project survey of the present invention includes a pile body 4. The pile body 4 includes a first cylinder 41 and a second cylinder 42 made of a light metal material. The cross-sectional area of the first cylinder 41 is larger than that of the second cylinder 42. The lower end of the first cylinder 41 is welded to the upper end of the second cylinder 42. The first cylinder 41 is filled with concrete 5. A mortar pouring port 7 is provided at the upper part of the second cylinder 42, and mortar overflow holes 9 are evenly distributed on the cylinder wall of the second cylinder 42.

[0039] For the mortar pouring port 7, it must be processed and opened simultaneously during the processing of the second cylinder 42 so that the cement mortar 8 can be injected into the inner part of the cylinder body of the second cylinder 42 through this mortar pouring port 7 by a grouting device during burial. At the same time, the opening position of the mortar pouring port 7 is biased towards the upper half of the second cylinder 42 so that the mortar can be filled into the inner cavity of the second cylinder 42 by gravity flow and flow out from the mortar overflow holes 9, wrapping the soil and the pile body, which is beneficial to the stability of the boundary stake.

[0040] The first cylinder 41 and the second cylinder 42 are preferably made of 304 stainless steel material with a thickness of 1-3 mm, and fixing steel bars 10 are distributed at different height positions of the second cylinder 42. The fixing steel bars 10 penetrate through the second cylinder 42, and the ends of the fixing steel bars 10 extend out of the second cylinder 42.

[0041] When the immersion line boundary stake is in use, cement mortar 8 is injected into the second cylinder 42, and the cement mortar 8 overflows from the mortar overflow holes 9 and wraps the surrounding soil and the outer wall of the second cylinder 42.

[0042] The top surface of the first cylinder 41 is set as the marking surface 11 for marking the boundary stake category and number 1, the center mark 2, and the installation date 3. The marking surface 11 is preferably made of stainless steel material and laser engraved to ensure the long-term use of the permanent boundary stake.

[0043] When the marking surface is made of stainless steel material with a thickness less than 3 mm, a stainless steel back plate of the same size (not shown in the figure) is welded to the back of the marking surface 11 to meet the requirements of laser engraving on the marking surface and the welded connection between the marking surface 11 and the first cylinder 41, and to prevent the marking surface 11 from being penetrated and damaged.

[0044] On the premise of following the specifications and practicality, the overall design of the submerged line boundary stake of the present invention considers reducing the unit cost, which not only meets the aesthetic requirements but also can be widely promoted in the survey and setting of the submerged line boundary stake in engineering survey.

[0045] During the production of the present invention, the first cylinder 41 and the second cylinder 42 are preferably of a cylindrical structure, the thickness of the stainless steel material is 3 mm, the diameter of the first cylinder 41 exposed above the ground is Ф140 mm to meet the requirement that the side length of the upper square marking surface of the concrete boundary stake in the specification is 100 mm, and at the same time, the boundary stake category and number 1, the center mark 2, and the installation date 3 are arranged reasonably and clearly visible; the diameter of the second cylinder 42 buried underground is Ф60 mm to facilitate the handling of the boundary stake, and mortar overflow holes 9 with a diameter of Ф20 mm are opened on the second cylinder 42 so that the cement mortar 8 poured into the second cylinder 42 during pile installation can fully flow out from the mortar overflow holes 9 to enhance the stability of the boundary stake; the mortar filling port 7 is preferably an opening with a side length of 10 - 40 mm, and during grouting, it is used in combination with mortar filling equipment, conduits, funnels, etc., aiming at ensuring smooth flow of the cement mortar 8 when it flows through the conduit; the filling concrete 5 is of C20 type and is precast, cured, and solidified in the processing plant for easy on-site installation; the fixing steel bars 10 are preferably conventional steel bars with a diameter of Ф5 mm and a length of 120 mm - 140 mm, which penetrate the second cylinder 42 horizontally and are welded firmly, and the number is controlled within 3 - 7. The fixing steel bars 10 are provided to firmly fix the inside and outside of the pile body to prevent it from being pulled out.

[0046] The interface between the first cylinder 41 and the marking surface 11 is welded by internally padded backing plates, and the external interface is smooth and regular with strong integrity. The inner wall of the contact between the first cylinder 41 and the second cylinder 42 is connected by welding. The pile body of the second cylinder 42 extending out of the first cylinder 41 is evenly punched according to the Φ20mm principle. At the same time, the upper, middle and bottom parts are all fixedly welded with Φ5mm and 120mm long fixed steel bars 10. The fixed steel bars 10 cross the maximum diameter of the cylinder body of the second cylinder 42. The fixed steel bars 10 at different positions do not require the same direction. The number of fixed steel bars 10 inserted into the cylinder body of the second cylinder 42 can be flexibly adjusted according to different geological conditions to ensure that the boundary pile is firmly fixed after being buried in the soil. When processing the stainless steel pile body 4, the mortar pouring port 7 must be processed and opened at the same time, so that the cement mortar 8 can be injected into the cylinder body of the second cylinder 42 by the grouting equipment during burial. At the same time, the opening position of the mortar pouring port 7 is biased towards the upper half of the second cylinder 42, so that the mortar can be fully filled after being poured in by gravity and flow out from the mortar overflow hole 9 relying on the self-weight pressure, wrapping the soil and the pile body 4 and solidifying, which is conducive to the stability of the boundary pile. After the stainless steel pile body 4 is processed, the filling concrete 5 is poured and cured in the processing plant according to the C20 standard to form a preliminary pile body structure, and the overall length of the pile body is 1-1.4m. The amount of concrete used for the submerged boundary pile designed in this way is reduced by about 75% compared with the traditional concrete boundary pile, and the weight is 5-10kg. Compared with the weight of 60-80kg of the traditional boundary pile, the design and measurement process of the boundary pile follow energy conservation and environmental protection, and at the same time, it meets the requirements of lightness during transportation, handling and burial, and is more beautiful and easy to preserve permanently, which can greatly improve the working efficiency and liberate the productivity.

[0047] When the present invention is buried, the upper part of the first cylinder 41 is exposed to the ground at a height of 0.15-0.25m, and the lower part of the first cylinder 41 is buried in the soil, and the whole is smooth and flat. The specific steps for burying boundary stakes are as follows: the first step is that professionals use surveying instruments and refer to the drawn flooding line to conduct on-site lofting measurements based on the boundary stake elevation results, obtain the position of the boundary stake, and conduct excavation. During excavation, tools are used to drill holes to a depth of 0.85-1.15m, and the upper part is expanded to a certain depth to ensure that the mortar pouring port 7 is lower than the ground surface and exposed. The second step is to place the flooding line boundary stake of the present invention into the excavated hole and cover it with soil. The covering soil ensures that it does not exceed the highest position of the mortar pouring port 7. The third step is to prepare pure cement mortar on site, and use mortar pouring equipment to slowly and continuously inject pure cement mortar into the steel pipe of the second cylinder 42 through the mortar pouring port 7, so that it flows into the bottom of the second cylinder 42 and fully overflows from the mortar overflow hole 9 to wrap the soil and the pile body, so that the cement mortar can be combined with the soil and solidified to fix the boundary stakes. After the cement mortar overflows from the mortar pouring port 7, continue to pressurize and pour to a certain extent. The fourth step is to cover the soil to a certain elevation after the mortar solidifies, and compact it to the ground surface 6. Finally, pour some concrete at the contact point between the boundary stake and the ground surface as needed to complete the burial.

[0048] The submerged line boundary post of the present invention, as a permanent boundary post (steel pipe pile), is lighter in weight and relatively "slim" in volume compared to concrete piles. When burying it, there is no need to use complex traditional earth-digging tools to excavate a large area of land. Only a punching tool such as a gasoline pickaxe that can be purchased in the existing market is required. For a pure concrete pile in the traditional way, it is necessary to excavate a square piece of land with a side length of 1 - 2 m. The submerged line boundary post of the present invention only needs to excavate a square piece of land with a side length of 0.3 - 0.5 m, saving concrete while reducing the excavation working surface, protecting the environment and saving energy at the same time.

[0049] The test results show that the submerged line boundary post for construction land expropriation and resettlement project survey of the present invention, as a boundary post based on the combination of stainless steel pipe and concrete, plays a key role in the high-efficiency survey and setting of a large number of boundary posts in the reservoir area of hydropower projects. At the same time, it is beneficial to protect nature, save energy and be environmentally friendly: The boundary post of the present invention made of stainless steel pipe, concrete and cement mortar reduces the concrete usage by about 75%. The excavation and burial take about 20 minutes in total (the traditional concrete boundary post takes an average of 60 - 90 minutes). Adding the transportation time, the average unit man-hour workload can be reduced by 50% or more. The boundary post is environmentally friendly, beautiful and easy to be found in the wild, not only meeting the requirements of boundary post survey and setting, but also being beneficial to the energy conservation, environmental protection and nature protection of engineering projects.

[0050] Verified by actual work, the submerged line boundary post for construction land expropriation and resettlement project survey of the present invention is suitable for large-scale and large-quantity burying in the reservoir area of hydropower engineering projects.

[0051] As described above, it is only the specific implementation scheme of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A submerged line boundary stake for construction land expropriation and resettlement project surveying, including a pile body (4), the top surface of the pile body is set as a marking surface (11), and it is characterized in that, The pile body includes a first cylinder and a second cylinder. The cross-sectional area of the first cylinder is larger than that of the second cylinder. The lower end of the first cylinder is connected to the middle of the upper end of the second cylinder. The first cylinder is filled with concrete (5). A mortar injection port (7) is arranged at the upper part of the second cylinder. Mortar overflow holes (9) and fixing steel bars (10) are distributed on the cylinder wall of the second cylinder. The fixing steel bars penetrate through the second cylinder and are fixedly connected to the second cylinder.

2. The inundation line boundary stake for construction land expropriation and resettlement project survey according to claim 1, characterized in that, The first cylinder and the second cylinder are respectively made of stainless steel materials, and the fixing steel bars (10) are distributed at different height positions of the second cylinder. The ends of the fixing steel bars extend out of the second cylinder.

3. The submerged line boundary stake for construction land expropriation and resettlement project survey according to claim 2, characterized in that, The first cylinder and the second cylinder are made of 304 stainless steel materials with a thickness of 1 - 3 mm.

4. The inundation line boundary stake for construction land requisition and resettlement project survey according to claim 2, characterized in that, The diameter of the first cylinder is Ф140 mm, and the diameter of the second cylinder is Ф60 mm.

5. The submerged line boundary stake for construction land requisition and resettlement project survey according to claim 1, characterized in that, When the submerged line boundary pile is in use, cement mortar (8) is injected into the second cylinder, and the cement mortar overflows from the mortar overflow holes to wrap the surrounding soil and the second cylinder.

6. The submerged line boundary stake for construction land expropriation and resettlement project survey according to claim 1, characterized in that, A backboard is installed on the back of the marking surface.

7. The submerged line boundary stake for construction land expropriation and resettlement project survey according to any one of claims 1 - 6, characterized in that, The overall length of the pile body is 1 - 1.4 m, and the overall weight is 5 - 10 kg.

8. The submerged line boundary stake for construction land requisition and resettlement project survey according to any one of claims 1-6, characterized in that The diameter of the mortar overflow hole is Ф20 mm.

9. The inundation line boundary stake for construction land requisition and resettlement project survey according to any one of claims 1-6, characterized in that, The mortar injection port is a square opening with a side length of 10 - 40 mm.

10. The submerged line boundary stake for construction land expropriation and resettlement project survey according to any one of claims 1-6, characterized in that, The fixing steel bars are made of conventional steel bars with a diameter of Ф5 mm and a length of 120 mm - 140 mm, and the number is controlled within 3 - 7.

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