CN117845681A - Self-adaptive cold and dry area surface coverage station site frost heaving prevention system - Google Patents

Abstract

The utility model provides a self-adaptation cold and arid area surface covering station yard frost heaving prevention system, relates to the cold area engineering field of soil mechanics, and it includes loose fill block stone layer, gabion device, gravel layer, water barrier, building layer, surface coating, sand well device, pumping device and control module, and loose fill block stone layer, gabion device, gravel layer, water barrier, building layer and surface coating are the range upon range of arrangement in proper order, and loose fill block stone layer and gravel layer all are provided with the wash port that communicates sand well device; the water pumping device is arranged at the bottom of the sand well device; the control module is in communication connection with the water pumping device and is used for adjusting the working state of the water pumping device. The frost heaving prevention system can reduce damage of frost heaving of soil body caused by water-gas migration, aggregation and freezing of soil body covering the lower surface of the station yard to an upper building, ensure high-performance service of the surface covering station yard, and reduce maintenance cost of station yard damage caused by frost heaving; and the water resource recycling and vegetation protection can be realized.

Description

Self-adaptive cold and dry area surface coverage station site frost heaving prevention system

Technical Field

The invention relates to the field of engineering in cold regions of soil mechanics, in particular to a self-adaptive cold and dry region surface coverage station site frost heaving prevention system.

Background

The cold and dry areas are built with a large number of important infrastructures such as high-speed railway beds, airport runways, oil delivery yards and the like, the deformation requirements on the foundations are very high, the upper surfaces of the infrastructures are usually covered with concrete panels, the infrastructures are in a closed state, and the soil bodies for building the engineering foundations are usually in an unsaturated state. When the outside temperature is lower than zero in winter, the vapor migration is an important way for water to enter the engineering unsaturated foundations and accumulate, and the closed upper surface of the infrastructure blocks the vapor migration and diffusion to the atmosphere, so that the vapor accumulates and condenses under the closed upper surface and is transformed into ice, and frost heaving is further caused, so that the superstructure is damaged to a certain extent, economic loss is caused, the surrounding environment is damaged, and the maintenance cost is increased.

Disclosure of Invention

The invention aims to provide a self-adaptive cold and dry area surface coverage station site frost heaving prevention system which can reduce the damage degree of water, soil and frost heaving to a superstructure, reduce economic loss, reduce damage to surrounding environment and reduce maintenance cost.

Embodiments of the present invention are implemented as follows:

in a first aspect, the invention provides an adaptive cold and dry area surface coverage yard frost heaving prevention system, comprising:

the sand well device comprises a loose filling block stone layer, a gabion device, a gravel layer, a water-resisting layer, a building layer, a surface covering layer, a sand well device, a water pumping device and a control module, wherein the loose filling block stone layer, the gabion device, the gravel layer, the water-resisting layer, the building layer and the surface covering layer are sequentially arranged in a stacked mode, and drainage holes communicated with the sand well device are formed in the loose filling block stone layer and the gravel layer; the water pumping device is arranged at the bottom of the sand well device and is used for pumping out surface runoff collected by the sand well device and redundant water in station foundation soil; the control module is in communication connection with the water pumping device and is used for adjusting the working state of the water pumping device.

In an alternative embodiment, the drainage holes on the loose fill rock layer are on the same side as the drainage holes on the gravel layer.

In an alternative embodiment, the sand well device comprises a water collection sand well, a bearing platform, a water conveying pipeline and a heat preservation layer, wherein the water collection sand well is communicated with the water drainage hole, the bearing platform is arranged at the top of the water collection sand well, the water conveying pipeline is communicated with the water collection sand well, and an overflow port is arranged at the end part of the water conveying pipeline; the heat preservation layer is wrapped outside the water conveying pipeline.

In an alternative embodiment, the water collection sand well comprises a high-strength reinforced concrete structure, filling sand and a bottom pile, wherein the high-strength reinforced concrete structure is provided with a water collection cavity, the bearing platform is connected with the top of the high-strength reinforced concrete structure and seals the water collection cavity, the water collection cavity is communicated with the water drain hole, the filling sand is filled in the water collection cavity, and the bottom pile is fixed at the bottom of the high-strength reinforced concrete structure.

In an alternative embodiment, the pumping device comprises a coarse sand layer provided with water holes, a unidirectional geomembrane connected with the side part of the coarse sand layer, a water storage tank connected with one side of the unidirectional geomembrane far away from the coarse sand layer, a water pump connected with the water storage tank and a water outlet pipe connected with the water pump, wherein a water inlet connected with the unidirectional geomembrane is arranged on the water storage tank, and the unidirectional geomembrane only allows water to flow from the coarse sand layer to the water storage tank.

In an alternative embodiment, the gabion arrangement comprises a gabion type stone layer provided between the loose fill stone layer and the gravel layer.

In an alternative embodiment, the gabion type stone block layer comprises a hinged steel buckle, high-strength glass fibers, force measuring optical fibers and filling stone blocks, wherein the ends of the high-strength glass fibers are converged and connected with the hinged steel buckle at the converged position, the force measuring optical fibers are installed in the high-strength glass fibers and used for obtaining the stress and stretching degree of the high-strength glass fibers, and the filling stone blocks are installed in areas surrounded by the high-strength glass fibers.

In an alternative embodiment, the control module comprises a controller, a water level and water temperature monitoring module and a water chemistry monitoring module which are all in communication connection with the controller, wherein the water level and water temperature monitoring module and the water chemistry monitoring module are all arranged on the pumping device, and the controller is in communication connection with the pumping device.

In an alternative embodiment, the heat-insulating layer is provided as an electrically heated layer.

In an alternative embodiment, the insulation layer is provided as a glass wool, rock wool tube or polyurethane layer.

The embodiment of the invention has the beneficial effects that:

to sum up, the self-adaptive cold and dry area surface coverage station yard protection system provided by the embodiment comprises a pumping device, a gabion device, a sand well device, a control module, a loose filling block layer positioned at the bottommost part, a gravel layer positioned above the gabion device, a water-resisting layer positioned above the gravel layer, a building layer and a surface covering layer positioned above the water-resisting layer, a bearing platform positioned above a water-collecting sand well, a bottom pile positioned below the water-collecting sand well, a water pipe connected with the water-collecting sand well, an overflow port extending upwards from the water pipe, a heat-insulating layer arranged on the periphery of the water pipe and the like. The same side of gravel layer and loose fill block layer all sets up the wash port, and the wash port is connected to the water collection sand well on right side, directly discharges groundwater, eliminates pore water pressure, reduces groundwater and freezes the destruction to normal building layer. The water pumping device is arranged on the right lower side of the water collection sand well and used for pumping out surface runoff collected by the sand well device and redundant water in the station foundation soil body, the water pumping device collects underground water and purifies the underground water for use, purified water is used for surface covering station greening and domestic water, the requirement on local tap water can be effectively reduced, and the cost is saved. The gabion device filled with the block stone adopts high-strength glass fiber as a framework, the joint is fixed by a hinged steel buckle, and the high-strength glass fiber is bound with a force measuring optical fiber for monitoring force and stretching degree. The gabion device is a good bearing layer, and the surrounding optical fibers can monitor the stress and stretching conditions of the gabion device in real time, so that the gabion device has an important guarantee function on normal and safe operation of a surface covering station. The sand well device collects liquid water accumulated by the loose filling block stone layer through filling sand on one hand, and is connected with a column of the upper structure on the other hand to play a supporting role.

In addition, the frost heaving prevention system fully utilizes the weak water retention property of the block gravels and the water-proof property of the water-proof layer, effectively reduces the water-gas aggregation of the soil body on the lower surface of the covered station yard in the cold and dry areas, further reduces the damage of the frost heaving of the soil body caused by the water-gas migration and aggregation of the soil body on the lower surface of the covered station yard to the upper layer building, ensures the high-performance service of the covered station yard, and reduces the maintenance cost of the damage of the station yard caused by the frost heaving; meanwhile, the system can effectively collect surface runoff and redundant water in station foundation soil, is used for irrigation of station vegetation in dry seasons, and realizes water resource recycling and vegetation protection.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a system for preventing frost heaving in a self-adaptive cold and dry area surface coverage station yard according to an embodiment of the present invention;

FIG. 2 is a schematic view of a pumping device according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a gabion apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic view of a water-collecting sand well according to an embodiment of the present invention;

fig. 5 is a flow chart of a control module according to an embodiment of the invention.

Icon:

001-drainage holes; 100-filling a stone layer; 200-gabion devices; 210-hinging a steel buckle; 220-high strength glass fibers; 230-a force measuring optical fiber; 240-filling stone; 300-a layer of gravel; 400-a water-resistant layer; 500-building layers; 600-surface coating; 700-sand well device; 710-water-collecting sand well; 711-high-strength reinforced concrete structure; 712-filling sand; 713-foundation piles; 720-bearing platform; 730-water pipe; 740-an insulating layer; 750-overflow port; 800-pumping device; 810-coarse sand layer; 811-water passing holes; 820-unidirectional geomembrane; 830-water reservoir; 831-water inlet; 832-water extraction port; 840-a water pump; 850-a water outlet pipe; 900-control module.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Examples

Referring to fig. 1-5, the present embodiment provides an anti-frost-heaving system for a self-adaptive cold/dry area surface covering yard, which comprises a loose-fill stone layer 100, a gabion device 200, a gravel layer 300, a water-blocking layer 400, a building layer 500, a surface covering layer 600, a sand well device 700, a pumping device 800 and a control module 900, wherein the loose-fill stone layer 100, the gabion device 200, the gravel layer 300, the water-blocking layer 400, the building layer 500 and the surface covering layer 600 are sequentially stacked and arranged, and the loose-fill stone layer 100 and the gravel layer 300 are respectively provided with a drain hole 001 communicated with the sand well device 700; the water pumping device 800 is arranged at the bottom of the sand well device 700 and is used for collecting underground water; the control module 900 is in communication connection with the pumping device 800, and is used for adjusting the working state of the pumping device 800.

In view of the above, the adaptive cold and dry area surface coverage station site frost heaving prevention system provided by the embodiment has at least the following advantages:

1. the rainfall and snowfall water are prevented from penetrating into the unsaturated foundation, and the damage of the normal building layer 500 caused by the freezing of the water penetration is reduced;

2. the underground liquid water and water vapor are prevented from migrating and accumulating into the foundation of the surface covered site under the action of freezing temperature gradient in winter, so that the underground liquid water and water vapor are condensed in the block stone layer 100, the block stone layer and the gravel layer 300 under the water-resisting layer 400, the accumulated water is discharged into the sand well device 700 by utilizing the weak water retention property of the block stone layer, and the water accumulation in the foundation of the surface covered site of a arid region is reduced, so that the damage of the water migration and freezing in the foundation to the normal building layer 500 is reduced;

3. the water pumping device 800 is utilized to collect the underground water, so that the underground water is optimally utilized, the requirement on the local tap water is reduced, and the cost is saved;

4. the gabion device 200 is safe and stable as a bearing stratum, stress and stretching conditions can be monitored in real time through optical fibers, early warning can be performed in time, and safety accidents caused by stratum instability are avoided;

5. the top end of the sand well is connected with the upper column, and the bottom pile 713 is connected with the bearing layer, so that the cost is effectively reduced, and the structural stability is enhanced.

The following examples illustrate details of the adaptive cold and dry zone surface coverage yard frost heaving prevention system provided herein by way of example.

In this embodiment, optionally, the drain hole 001 on the loose-fill stone layer 100 and the drain hole 001 on the gravel layer 300 are located on the same side, so that the sand well device 700 is convenient to set, the compactness of the whole structure is improved, and the damage to the soil layer is reduced.

Referring to fig. 1, in this embodiment, optionally, the sand well device 700 includes a water collecting sand well 710, a bearing platform 720, a water pipe 730 and an insulating layer 740, the water collecting sand well 710 is communicated with a drain hole 001, the bearing platform 720 is arranged at the top of the water collecting sand well 710, the water pipe 730 is communicated with the water collecting sand well 710, and an overflow port 750 is arranged at the end of the water pipe 730; the heat preservation layer 740 is wrapped outside the water pipe 730.

Referring to fig. 1 and 4, optionally, the water-collecting sand well 710 includes a high-strength reinforced concrete structure 711, filled sand 712 and a bottom pile 713, the high-strength reinforced concrete structure 711 is provided with a water-collecting cavity, the bearing platform 720 is connected with the top of the high-strength reinforced concrete structure 711 and seals the water-collecting cavity, the water-collecting cavity is communicated with the drain hole 001, the filled sand 712 is filled in the water-collecting cavity, and the bottom pile 713 is fixed at the bottom of the high-strength reinforced concrete structure 711.

The high-strength reinforced concrete 711 may be a finish-rolled thread HRB400 high-strength steel bar, C60 grade concrete, or the like.

The filling sand 712 may be river sand, mountain sand, crushed sand, water-quenched furnace slag, or the like.

It should be noted that the water collecting hole can be made of PE pipe, PVC pipe PPR pipe and other pipe fittings.

The base 720 may be made of C30 concrete or the like.

The foundation piles 713 may be made of C35 concrete or the like.

Note that, the insulating layer 740 may be made of glass wool, rock wool tube, polyurethane, or other materials. It should be appreciated that in other embodiments, the insulating layer 740 may also be configured as an electrically heated layer to facilitate regulation of water temperature.

It should be noted that, the water pipe 730 may be made of a material such as a PE pipe or a PVC pipe PPR pipe.

Referring to fig. 1 and 2, in the present embodiment, optionally, the water pumping device 800 includes a coarse sand layer 810 provided with water holes 811, a unidirectional geomembrane 820 connected to a side portion of the coarse sand layer 810, a water storage tank 830 connected to a side of the unidirectional geomembrane 820 away from the coarse sand layer 810, a water pump 840 connected to the water storage tank 830, and a water outlet pipe 850 connected to the water pump 840, wherein the water storage tank 830 is provided with a water inlet 831 connected to the unidirectional geomembrane 820, and the unidirectional geomembrane 820 only allows water to flow from the coarse sand layer 810 to the water storage tank 830.

It should be appreciated that the water passing hole 811 may be made of pipe fittings such as PE pipe, PVC pipe PPR pipe, etc.; coarse sand layer 810 is placed in the box grid and is densely filled; the unidirectional geomembrane 820 can be made of thermoplastic resin material-polyresin and other materials with good heat resistance and cold resistance; the water storage tank 830 may be a carbon steel plate water storage tank 830 or a reinforced concrete water tank; the water inlet 831 can be formed by PE pipe, PVC pipe, PPR pipe and other pipe fittings; the pump body, the pump cover and the suspension of the water pump 840 can be made of HT200 cast iron, the base plate and other parts of the water pump 840 can be made of HT150 cast iron and the like, and the impeller, the mouth ring, the shaft sleeve and the like of the water pump 840 are made of HT250 cast iron;

it should be understood that a water pumping port 832 may be disposed on the water storage tank 830, the water pump 840 is connected to the water pumping port 832, the water pumping port 832 may be formed by using a pipe such as a PE pipe, a PVC pipe PPR pipe, and the water outlet pipe 850 may be formed by using a PE pipe, a PVC pipe PPR pipe, and the like.

In this embodiment, the gabion arrangement 200 optionally comprises a gabion type stone layer disposed between the loose fill stone layer 100 and the gravel layer 300.

Further, the gabion type stone block layer comprises a hinged steel buckle 210, high-strength glass fibers 220, force measuring fibers 230 and filling stones 240, wherein the ends of the high-strength glass fibers 220 are collected and connected with the hinged steel buckle 210 at the collecting position, the force measuring fibers 230 are installed in the high-strength glass fibers 220 and used for obtaining the stress and the stretching degree of the high-strength glass fibers 220, and the filling stones 240 are installed in the area surrounded by the high-strength glass fibers 220.

It should be understood that the high strength glass fiber 220 may be replaced by high strength fiber, rebar, etc., which is not intended to be exhaustive in this embodiment.

It should be appreciated that the high strength reinforced concrete structure 711 may be made of finish rolled threaded HRB400 high strength steel and C60 grade concrete; the filling sand 712 can be river sand, mountain sand, broken sand or water quenching furnace slag; the water collecting hole can be formed by PE pipe, PVC pipe or PPR pipe; the cap 720 may be made of C30 concrete and the bottom pile 713 may be made of C35 concrete.

Referring to fig. 5, in this embodiment, optionally, the control module 900 includes a controller, and a water level and temperature monitoring module and a water chemistry monitoring module both communicatively connected to the controller, where the water level and temperature monitoring module and the water chemistry monitoring module are both disposed in the water storage tank 830, and the controller is communicatively connected to the water pump 840. The water level and water temperature monitoring module is abnormal in the operation process, an early warning signal is sent to the controller through the wireless transmitter, the controller processes data information and the like and regulates and controls the water pumping device 800 to stop water inlet 831 when the water level exceeds the limit or the water temperature is abnormal. When the water chemistry monitoring does not reach the standard, the sewage is treated by the sewage treatment system and then the normal drainage is continued.

Thus, the control module 900 comprises functions of automatic pumping control, water level and water temperature monitoring and alarming, chemical substance monitoring, automatic pollutant exceeding treatment, information transmission and the like.

The self-adaptive cold and dry area surface coverage station yard protection system provided by the embodiment has good protection effect on the surface layer of the building, can improve the water resource utilization efficiency, and can reduce the maintenance cost.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An adaptive cold and dry area surface coverage station yard frost heaving prevention system, comprising:

the sand well device comprises a loose-fill block stone layer (100), a gabion device (200), a gravel layer (300), a water-resisting layer (400), a building layer (500), a surface covering layer (600), a sand well device (700), a water pumping device (800) and a control module (900), wherein the loose-fill block stone layer (100), the gabion device (200), the gravel layer (300), the water-resisting layer (400), the building layer (500) and the surface covering layer (600) are sequentially arranged in a stacked mode, and the loose-fill block stone layer (100) and the gravel layer (300) are provided with drain holes (001) communicated with the sand well device (700); the pumping device (800) is arranged at the bottom of the sand well device (700) and is used for pumping out surface runoff collected by the sand well device and redundant water in station foundation soil; the control module (900) is in communication connection with the water pumping device (800) and is used for adjusting the working state of the water pumping device (800).

2. The adaptive cold and dry zone surface covering yard frost heaving prevention system of claim 1, wherein:

the drainage holes (001) on the loose filling block stone layer (100) and the drainage holes (001) on the gravel layer (300) are positioned on the same side.

3. The adaptive cold and dry zone surface covering yard frost heaving prevention system of claim 1, wherein:

the sand well device (700) comprises a water collection sand well (710), a bearing platform (720), a water conveying pipeline (730) and a heat preservation layer (740), wherein the water collection sand well (710) is communicated with the water drainage hole (001), the bearing platform (720) is arranged at the top of the water collection sand well (710), the water conveying pipeline (730) is communicated with the water collection sand well (710), and an overflow port (750) is formed in the end part of the water conveying pipeline (730); the heat preservation layer (740) is wrapped outside the water conveying pipeline (730).

4. The adaptive cold and dry zone surface covering yard frost heaving prevention system of claim 3, wherein:

the water collection sand well (710) comprises a high-strength reinforced concrete structure (711), filling sand (712) and a bottom pile (713), wherein the high-strength reinforced concrete structure (711) is provided with a water collection cavity, the bearing platform (720) is connected with the top of the high-strength reinforced concrete structure (711) and seals the water collection cavity, the water collection cavity is communicated with the water drain hole (001), the filling sand (712) is filled in the water collection cavity, and the bottom pile (713) is fixed at the bottom of the high-strength reinforced concrete structure (711).

5. The adaptive cold and dry zone surface covering yard frost heaving prevention system of claim 3, wherein:

the heat preservation layer (740) is arranged as an electric heating layer.

6. The adaptive cold and dry zone surface covering yard frost heaving prevention system of claim 3, wherein:

the heat preservation layer (740) is arranged as a glass wool, rock wool pipe or polyurethane layer.

7. The adaptive cold and dry zone surface covering yard frost heaving prevention system of claim 1, wherein:

the water pumping device (800) comprises a coarse sand layer (810) provided with water holes (811), a unidirectional geomembrane (820) connected with the side part of the coarse sand layer (810), a water storage tank (830) connected with one side of the unidirectional geomembrane (820) far away from the coarse sand layer (810), a water pump (840) connected with the water storage tank (830) and a water outlet pipe (850) connected with the water pump (840), wherein a water inlet (831) connected with the unidirectional geomembrane (820) is arranged on the water storage tank (830), and the unidirectional geomembrane (820) only allows water to flow from the coarse sand layer (810) to the water storage tank (830).

8. The adaptive cold and dry zone surface covering yard frost heaving prevention system of claim 1, wherein:

the gabion arrangement (200) comprises a gabion type block layer arranged between the loose fill block layer (100) and the gravel layer (300).

9. The adaptive cold and dry zone surface covering yard frost heaving prevention system of claim 8, wherein:

the gabion type stone block layer comprises a hinged steel buckle (210), high-strength glass fibers (220), force measuring optical fibers (230) and filling stone blocks (240), wherein the ends of the high-strength glass fibers (220) are collected and connected with the hinged steel buckle (210) at the collecting position, the force measuring optical fibers (230) are installed in the high-strength glass fibers (220) and used for obtaining the stress and the stretching degree of the high-strength glass fibers (220), and the filling stone blocks (240) are installed in the areas surrounded by the high-strength glass fibers (220).

10. The adaptive cold and dry zone surface covering yard frost heaving prevention system of claim 1, wherein:

the control module (900) comprises a controller, a water level and water temperature monitoring module and a water chemistry monitoring module which are all in communication connection with the controller, wherein the water level and water temperature monitoring module and the water chemistry monitoring module are all arranged on the pumping device (800), and the controller is in communication connection with the pumping device (800).