Detachable hydrostatic pressure monitoring and early warning system for basement floor

Abstract

The utility model provides a detachable ground floor hydrostatic pressure monitoring early warning system relates to the field of construction engineering. Include: metal piezometric tube is used for being fixedly arranged in ground floor and its lower part is located in the ground soil below the floor, it is filled with high strength grouting material between it and the floor, and it is filled with medium coarse sand filter material between the lower part outer periphery and the ground soil, a plurality of water seepage holes are arranged in the lower part pipe wall of metal piezometric tube, and the pipe cavity is filled with medium coarse sand filter material, the seepage pressure sensor is buried in the medium coarse sand filter material in metal piezometric tube, the steel cavity pipe is arranged in metal piezometric tube and is located above medium coarse sand filter material, the protective cover is detachably sealed and installed on the top of metal piezometric tube, is internally provided with microprocessor, and the top is provided with audible -visual alarm, audible -visual alarm and seepage pressure sensor are electrically connected with microprocessor respectively. The present application can directly close ground floor monitoring hydrostatic pressure, is convenient to install and maintain, accurate data and can real -time early warning.

Description

Technical Field

[0001] This utility model relates to the field of building engineering, and more specifically, to a detachable basement floor hydrostatic pressure monitoring and early warning system. Background Technology

[0002] In northern my country, most existing buildings were constructed when water levels were low, resulting in designs that did not adequately address buoyancy resistance, or even failed to consider it at all. In recent years, groundwater levels have been rising annually, increasing the buoyancy forces on existing buildings. This often leads to foundation deformation and basement structural damage before reinforcement is implemented, incurring significant economic costs and disrupting residents' lives.

[0003] To address the above issues, the current main approach is to install monitoring wells around the building. This method has several drawbacks: ① Existing buildings are often surrounded by dense pipelines, making it impractical to drill wells near the building. Drilling wells further away often results in discrepancies between the monitored water level and the groundwater level. ② This method requires well drilling, with depths equal to or greater than the basement depth. Larger well depths are costly, especially in areas with gravel or similar geological formations. ③ Monitoring methods largely rely on manual measurement, resulting in low data collection frequency, poor data timeliness, and difficulty in capturing rapid short-term changes in groundwater. While some systems place water level sensors in monitoring wells, the hydrostatic pressure of the foundation slab is directly used to address the building's buoyancy resistance. Therefore, the water level must be converted to hydrostatic pressure, which varies depending on the soil type and the water head. Utility Model Content

[0004] The purpose of this utility model is to provide a detachable hydrostatic pressure monitoring and early warning system for basement floor slabs. This system can directly monitor hydrostatic pressure close to the basement floor slab, is easy to install and maintain, provides accurate data, and can provide real-time early warning, thus providing a reliable guarantee for the anti-buoyancy safety of existing building basement floor slabs.

[0005] The embodiments of this utility model are implemented as follows: This application provides a detachable basement floor hydrostatic pressure monitoring and early warning system, including: A metal pressure testing pipe is used to be installed and fixed in the foundation soil below the basement floor slab. The space between the metal pressure testing pipe and the base slab is filled with high-strength grout, and the space between the lower outer periphery of the pipe and the foundation soil is filled with medium-coarse sand filter material. The lower part of the metal pressure testing pipe has several seepage holes, and its cavity is filled with medium-coarse sand filter material. A pressure sensor is embedded in the medium-coarse sand filter material inside the metal pressure measuring tube; A hollow steel tube is installed inside the metal pressure measuring tube and located above the medium-coarse sand filter material; A protective cover is detachably and sealed to the top of the metal pressure measuring tube. A microprocessor is installed inside the protective cover, and an audible and visual alarm is installed on its top. The audible and visual alarm and the pressure sensor are electrically connected to the microprocessor respectively. The connecting wire between the pressure sensor and the microprocessor passes through the hollow steel tube.

[0006] Furthermore, based on the aforementioned scheme, a supporting steel ring is provided inside the metal pressure measuring tube, and the cavity below the supporting steel ring is filled with medium-coarse sand filter material; the steel hollow tube is supported on the supporting steel ring.

[0007] Furthermore, based on the aforementioned scheme, the seepage hole is opened in the pipe wall area where the metal pressure measuring tube is located 80-120mm below the supporting steel ring.

[0008] Furthermore, based on the aforementioned scheme, the bottom of the metal pressure measuring tube is also provided with a seepage hole, and the bottom of the tube is also filled with medium-coarse sand filter material between it and the foundation soil.

[0009] Furthermore, based on the aforementioned scheme, the steel hollow tube includes an outer tube body and an inner tube body. The inner tube body is concentrically fixed to the outer tube body through a radial connecting plate. The top end of the outer tube body is flush with the opening of the metal pressure measuring tube. The top end of the inner tube body extends upward and is higher than the outer tube body. The connecting wire passes through the inner tube body.

[0010] Furthermore, based on the aforementioned scheme, the interior of the inner tube and the space between the inner tube and the outer tube are filled with a waterproof sealing material.

[0011] Furthermore, based on the aforementioned scheme, the annular gap between the top of the metal pressure measuring tube and the top of the outer tube is sealed by a rubber plug.

[0012] Furthermore, based on the aforementioned scheme, the protective cover includes a protective shell, a connecting steel plate, and at least three connecting steel pipes. The connecting steel plate has a through hole in its center, which covers the top of the metal pressure measuring tube, and the inner tube passes through the through hole. The multiple connecting steel pipes are connected sequentially from bottom to top by fasteners. The lowest connecting steel pipe is connected to the connecting steel plate by fasteners and fixed to the high-strength grout. The middle connecting steel pipe is provided with a support plate for installing the microprocessor. The protective housing is installed on the outside of the multiple connecting steel pipes; the audible and visual alarm is installed on the top of the protective housing.

[0013] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects: This application creates a stable pressure monitoring zone by inserting and fixing a metal pressure-measuring pipe into the basement floor slab. A seepage hole is opened at the bottom of the metal pressure-measuring pipe and filled with medium-coarse sand filter material, effectively filtering impurities from the foundation soil. Combined with a pressure sensor embedded in the medium-coarse sand filter material, which directly contacts groundwater, the actual hydrostatic pressure below the floor slab can be collected without water level conversion, completely eliminating conversion errors under different soil types and improving monitoring accuracy. The high-strength grout filling between the pressure sensor and the floor slab provides a sealing and protective function. Through a sealed design using a steel hollow pipe and protective cover, an audible and visual alarm, a microprocessor, and the pressure sensor are electrically connected, allowing real-time reception of pressure data collected by the sensor. When the data exceeds a preset threshold, the audible and visual alarm is immediately triggered, providing rapid risk warning and solving the problem of delayed manual monitoring, thus preventing structural damage. The overall structure eliminates the need for deep wells and can be installed directly close to the floor slab, adapting to environments with dense surrounding pipelines and reducing construction costs and difficulty. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the detachable basement floor hydrostatic pressure monitoring and early warning system according to an embodiment of the present invention; Figure 2 This is a partially enlarged schematic diagram of the detachable basement floor hydrostatic pressure monitoring and early warning system according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the metal pressure measuring tube according to an embodiment of the present invention; Figure 4 This is a top view of the steel hollow tube according to an embodiment of the present invention.

[0016] Icons: 1-Base plate, 2-Metal pressure measuring tube, 21-Seepage hole, 22-Supporting steel ring, 23-Rubber plug seal, 3-High-strength grout, 4-Medium-coarse sand filter material, 5-Pressure sensor, 6-Steel hollow tube, 61-Outer tube body, 62-Inner tube body, 63-Radial connecting plate, 7-Protective cover, 8-Microprocessor, 9-Audible and visual alarm, 71-Protective housing, 72-Connecting steel plate, 73-Connecting steel pipe, 74-Fastener. Detailed Implementation

[0017] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0018] Please refer to Figures 1-4The diagram shown is a schematic representation of the overall structure of a detachable basement floor hydrostatic pressure monitoring and early warning system. This embodiment provides a detachable basement floor hydrostatic pressure monitoring and early warning system, including: Metal pressure measuring pipe 2 is used to be installed and fixed in the foundation soil below the basement slab 1. High-strength grouting material 3 is filled between the metal pressure measuring pipe 2 and the basement slab 1, and medium-coarse sand filter material 4 is filled between the lower outer periphery of the metal pressure measuring pipe 2 and the foundation soil. Several seepage holes 21 are opened in the lower pipe wall of the metal pressure measuring pipe 2, and the cavity of the pipe is filled with medium-coarse sand filter material 4. The pressure sensor 5 is embedded in the medium-coarse sand filter material 4 inside the metal pressure measuring tube 2; The steel hollow tube 6 is installed inside the metal pressure measuring tube 2 and is located above the medium-coarse sand filter material 4; The protective cover 7 is detachably and sealed on the top of the metal pressure measuring tube 2. The protective cover 7 contains a microprocessor 8 and an audible and visual alarm 9 is installed on its top. The audible and visual alarm 9 and the pressure sensor 5 are electrically connected to the microprocessor 8 respectively. The connecting wire between the pressure sensor 5 and the microprocessor 8 passes through the steel hollow tube 6.

[0019] The following will further describe a detachable basement floor slab hydrostatic pressure monitoring and early warning system according to this exemplary embodiment.

[0020] In some implementations, the aforementioned monitoring and early warning system includes four core components: a metal pressure measuring tube 2, a pressure sensor 5, a steel hollow tube 6, and a protective cover 7. The metal pressure measuring tube 2 needs to be installed and fixed to the basement floor slab 1, with its lower part extending into the foundation soil below the floor slab 1. The space between the metal pressure measuring tube 2 and the floor slab 1 is filled with high-strength grouting material 3 (such as C60 non-shrink grouting material). This material has high strength and good sealing performance after hardening, which can not only firmly fix the metal pressure measuring tube 2 and prevent the pressure measuring tube from shifting due to foundation settlement, but also isolate the interaction between external water and the tube cavity, avoiding interference with the monitoring environment. The lower outer periphery of the metal pressure measuring tube 2 is filled with medium-coarse sand filter material 4 (particle size 0.5-2mm) between the filter material and the foundation soil, as well as inside the tube cavity. Water seepage holes 21 are opened in the lower tube wall. The filter material filters out mud and sand particles in the foundation soil, preventing blockage of the seepage holes 21 and ensuring smooth entry of groundwater into the tube cavity. This allows the pressure sensor 5, embedded in the filter material, to directly contact the groundwater, enabling the acquisition of the true hydrostatic pressure below the base plate 1 without water level conversion. This completely eliminates conversion errors under different soil types and improves monitoring accuracy. A hollow steel tube 6 is positioned above the filter material inside the metal pressure measuring tube 2 to carry the connecting wires between the pressure sensor 5 and the microprocessor 8, preventing friction between the wires and the filter material or corrosion from moisture. The protective cover 7 is detachably sealed to the top of the pressure measuring pipe, housing a microprocessor 8 and a top-mounted audible and visual alarm 9. The microprocessor 8 is electrically connected to both the sensor and the alarm, receiving pressure data collected by the sensor in real time. When the data exceeds a preset threshold (set according to the anti-buoyancy design value of the basement floor slab 1), the audible and visual alarm 9 is immediately triggered, achieving rapid risk warning and solving the problem of lagging manual monitoring, thus preventing structural damage. The overall structure does not require deep wells and can be installed directly close to the basement slab 1, adapting to environments with dense pipelines around the building, reducing construction costs and difficulty.

[0021] As a preferred implementation, a supporting steel ring 22 is provided inside the aforementioned metal pressure measuring tube 2. The cavity below the supporting steel ring 22 is filled with medium-coarse sand filter material 4, ensuring that the pressure sensor 5 is always buried in the filter material at the bottom of the cavity. This avoids sensor position shift due to deviation in filter material filling height, ensuring that the monitoring point always corresponds to the key pressure area below the base plate 1, further improving the stability of monitoring data. The hollow steel tube 6 is directly supported on the supporting steel ring 22. The supporting steel ring 22 provides stable support for the hollow steel tube 6 through its own rigidity, preventing the hollow steel tube 6 from sinking and pressing the pressure sensor 5 due to its own weight or external vibration, or from poor wire contact due to shaking. This ensures continuous and stable signal transmission, avoids monitoring interruption, and also facilitates the direct removal and installation of the hollow steel tube 6 from the metal pressure measuring tube 2. With the detachable protective cover 7, it is easy to remove the pressure sensor 5 for maintenance, ensuring the continuous operation of the monitoring and early warning system.

[0022] As a preferred embodiment, the seepage hole 21 is opened in the pipe wall area of ​​the metal pressure measuring pipe 2 located 80-120mm below the supporting steel ring 22. The pipe wall area 80-120mm below the supporting steel ring 22 corresponds to the height of the pad layer at the bottom of the base plate 1. By not opening the hole in this position, groundwater can be prevented from seeping into the pad layer.

[0023] As a preferred implementation, the metal pressure measuring tube 2 has a seepage hole 21 at the bottom, and the bottom is filled with medium-coarse sand filter material 4 between it and the foundation soil. The bottom seepage hole 21 and the side wall seepage hole 21 form a coordinated water inlet structure. No matter whether the groundwater rises from the side wall or the bottom, it can enter the pipe cavity through the corresponding seepage hole 21 and be captured by the pressure sensor 5 in time, completely eliminating the monitoring blind spot, ensuring that the monitoring covers all possible paths of groundwater rise, improving the comprehensiveness and reliability of the monitoring, and is especially suitable for scenarios with uneven permeability of foundation soil.

[0024] In a preferred embodiment, the aforementioned hollow steel tube 6 includes an outer tube 61 and an inner tube 62. The inner tube 62 is concentrically fixed inside the outer tube 61 via a radial connecting plate 63, forming an independent wire channel. The outer tube 61 isolates the filter material from compression and friction, protecting the inner tube 62 and the internal wires. The inner tube 62 is specifically designed for threading connecting wires, preventing direct contact between the wires and the outer tube 61 and reducing wear. Simultaneously, the top of the outer tube 61 is flush with the opening of the metal pressure measuring tube 2, while the top of the inner tube 62 extends upwards and surpasses the outer tube 61. This design facilitates direct connection between the inner tube 62 and the microprocessor 8 within the protective cover 7, eliminating the need for additional wire extension (reducing wire joints and lowering potential failure points), and also prevents water accumulation at the top of the outer tube 61 from seeping into the inner tube, ensuring the wires remain in a dry environment. The overall structure significantly improves the protection level of the wires, ensures stable signal transmission, and solves the problems of easy wear and water ingress in existing single conduits.

[0025] In a preferred embodiment, the inner tube 62 and the space between the inner tube 62 and the outer tube 61 are filled with a waterproof sealant. Specifically, this waterproof sealant can be polyurethane, which has excellent waterproof and adhesive properties, completely isolating the water vapor inside the tube from the external environment. The filling inside the inner tube 62 prevents the wires from getting damp, short-circuiting, or corroding due to oxidation, extending the wires' service life. The filling between the inner tube 62 and the outer tube 61 prevents water vapor from seeping in through the gap between the two tubes, further enhancing the waterproof effect. This design places the wires in a fully sealed protective environment. Even if a small amount of water accumulates inside the tube, it will not affect the normal operation of the wires, ensuring long-term stable operation of the system in a humid underground environment and reducing the frequency of maintenance due to wire damage.

[0026] In a preferred embodiment, the annular gap between the top of the metal pressure measuring tube 2 and the top of the outer tube 61 is sealed by a rubber plug 23. The rubber plug has good elasticity and sealing properties, which can tightly fill the gap, effectively preventing external dust, moisture or liquid (such as cleaning water from the basement floor) from entering the interior of the metal pressure measuring tube 2, and preventing water from seeping into the protective cover 7.

[0027] In a preferred embodiment, the protective cover 7 includes a protective shell 71, a connecting steel plate 72, and at least three connecting steel pipes 73. The connecting steel plate 72 has a through hole in its center, covering the top of the metal pressure testing pipe 2 and allowing the inner pipe 62 to pass through. The lowest connecting steel pipe 73 is connected to the connecting steel plate 72 by fasteners 74 (such as bolts) and fixed in the high-strength grout 3, ensuring the protective cover 7 is firmly installed and preventing displacement due to external impact. The multiple connecting steel pipes 73 are spliced ​​from bottom to top by fasteners 74. A support plate is installed inside the middle section of the steel pipe for installing the microprocessor 8, facilitating disassembly. The number of connecting steel pipe sections and the total height can be flexibly adjusted according to the height of the space above the basement floor 1 (e.g., whether there are pipelines or equipment obstructing the view), adapting to different building installation scenarios. The protective shell 71 covers the outside of the connecting steel pipes 73, effectively protecting the microprocessor 8, wire connectors, and other components from impact and dust contamination. The detachable design allows for the debugging of the microprocessor 8, the replacement of the pressure sensor 5, or the repair of the wires without damaging the basement floor 1, significantly reducing maintenance costs and construction time. It solves the problem that the maintenance of the existing monitoring system requires excavation, which affects the use of the building. In addition, the sound and light alarm 9 is set on the top of the protective shell 71, which has a wider range of warning signal transmission and makes it easier for staff to quickly detect risks.

[0028] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0029] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A detachable hydrostatic pressure monitoring and early warning system for basement floor slabs, characterized in that, include: A metal pressure testing pipe is used to be installed and fixed in the foundation soil below the basement floor slab. The space between the metal pressure testing pipe and the base slab is filled with high-strength grout, and the space between the lower outer periphery of the pipe and the foundation soil is filled with medium-coarse sand filter material. The lower part of the metal pressure testing pipe has several seepage holes, and its cavity is filled with medium-coarse sand filter material. A pressure sensor is embedded in the medium-coarse sand filter material inside the metal pressure measuring tube; A hollow steel tube is installed inside the metal pressure measuring tube and located above the medium-coarse sand filter material; A protective cover is detachably and sealed to the top of the metal pressure measuring tube. A microprocessor is installed inside the protective cover, and an audible and visual alarm is installed on its top. The audible and visual alarm and the pressure sensor are electrically connected to the microprocessor respectively. The connecting wire between the pressure sensor and the microprocessor passes through the hollow steel tube.

2. The detachable basement floor hydrostatic pressure monitoring and early warning system according to claim 1, characterized in that, The metal pressure measuring tube is equipped with a supporting steel ring, and the cavity below the supporting steel ring is filled with medium and coarse sand filter material; the steel hollow tube is supported on the supporting steel ring.

3. The detachable basement floor hydrostatic pressure monitoring and early warning system according to claim 2, characterized in that, The seepage hole is located in the pipe wall area 80-120mm below the supporting steel ring of the metal pressure measuring pipe.

4. The detachable basement floor hydrostatic pressure monitoring and early warning system according to claim 3, characterized in that, The bottom of the metal pressure measuring tube is also provided with a seepage hole, and the bottom of the tube is filled with medium and coarse sand filter material.

5. The detachable basement floor hydrostatic pressure monitoring and early warning system according to claim 1, characterized in that, The steel hollow tube includes an outer tube and an inner tube. The inner tube is concentrically fixed to the outer tube by a radial connecting plate. The top end of the outer tube is flush with the opening of the metal pressure measuring tube. The top end of the inner tube extends upward and is higher than the outer tube. The connecting wire passes through the inner tube.

6. The detachable basement floor hydrostatic pressure monitoring and early warning system according to claim 5, characterized in that, The inner tube and the space between the inner and outer tubes are filled with waterproof sealing material.

7. The detachable basement floor hydrostatic pressure monitoring and early warning system according to claim 6, characterized in that, The annular gap between the top of the metal pressure measuring tube and the top of the outer tube is sealed by a rubber plug.

8. The detachable basement floor hydrostatic pressure monitoring and early warning system according to claim 5, characterized in that, The protective cover includes a protective shell, a connecting steel plate, and at least three connecting steel pipes. The connecting steel plate has a through hole in the center, which covers the top of the metal pressure measuring tube, and the inner tube passes through the through hole. The multiple connecting steel pipes are connected sequentially from bottom to top by fasteners. The lowest connecting steel pipe is connected to the connecting steel plate by fasteners and fixed to the high-strength grout. The middle connecting steel pipe is provided with a support plate for installing the microprocessor. The protective housing is installed on the outside of the multiple connecting steel pipes; the audible and visual alarm is installed on the top of the protective housing.

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