Underground space structure serving as emergency regulation and storage space for excessive rainwater

Abstract

The invention belongs to the field of municipal drainage, and particularly relates to an underground space structure serving as an emergency regulation and storage space for excessive rainwater. In a normal state, the water inlet channel is normally closed, the special waterproof door is unobstructed, and the rain sewage regeneration module operates normally. During waterlogging, people and vehicles are emptied, the special waterproof door is closed, and the emergency regulation and storage space is used for regulating and storing rainwater. The system comprises a vertical stacking type module and a transverse stacking type module, and comprises a rainwater treatment module, a sewage treatment module, a regulating reservoir module, a drainage pumping station module and the like. The special waterproof door comprises a main door, an auxiliary door, a transition cabin and the like. The outside is communicated with a water inlet closed conduit, comprises a rain gauge and the like, and is controlled by a hydraulic discharge gate and the like. The system further comprises a control system which can switch idle, water inlet, water storage and water drainage modes according to different rainfall conditions, and linkage control over all the devices is achieved. The urban inland inundation can be effectively handled, and reasonable regulation, storage and utilization of rainwater are achieved.

Description

Technical Field

[0001] The invention belongs to the field of municipal drainage, and in particular relates to an underground space structure which also serves as an emergency storage space for excessive rainwater. Background Art

[0002] Most foreign countries integrate rainwater storage with various waterscapes and park green spaces, use various vegetation to filter, collect and utilize rainwater, and transform rainwater storage into multifunctional ones. However, blindly raising flood control standards will lead to excessive investment. At the same time, the ground storage space will also have a greater impact on municipal infrastructure and surrounding residents when dealing with excessive rainwater.

[0003] Underground space is the frontier for building resilient cities due to its good airtightness and strong environmental stability. At present, the main functions of underground space are underground commerce, underground transportation, civil air defense, integrated pipe corridors, underground municipal facilities and plants, etc. Using underground space to build a comprehensive urban disaster prevention system is a new direction for responding to disaster crises under the new situation. There is still little research on using urban underground space as an emergency storage space for excessive rainwater.

[0004] Therefore, there is an urgent need to design a new type of underground space that combines peacetime and disaster relief functions. While taking into account the original functions, it can also play the role of regulating and storing excess rainwater when urban flooding disasters occur, thereby solving urban flooding problems economically and efficiently. Summary of the invention

[0005] In view of the low standards for urban waterlogging prevention and control, poor capacity for collecting and utilizing initial rainwater and rainfall, and weak emergency storage capacity for rainwater exceeding the standard, in order to achieve the combination of normal and emergency, combined with flood prevention requirements and different water levels under different working conditions, each profession needs to couple the normal functional facilities of the underground space (garage) with the emergency storage function, and provide a systematic coupling structure in which the urban underground space also serves as an emergency storage space for rainwater exceeding the standard.

[0006] In order to achieve the above objectives, the present invention specifically adopts the following technical means:

[0007] An underground space structure that also serves as an emergency storage space for excessive rainwater, comprising an emergency storage space, a water inlet channel, and a rainwater regulating pool. The rainwater regulating pool collects rainwater by opening the water inlet channel. The emergency storage space is arranged beside the rainwater regulating pool and can introduce excessive rainwater that cannot be accommodated in the rainwater regulating pool. The emergency storage space is a transversely stacked storage space, which includes at least two water storage cavities, and adjacent water storage cavities are connected or separated by special waterproof doors. Under normal conditions, the emergency storage space is used as an underground garage to park vehicles, the water inlet channel is kept in a normally closed state, and the special waterproof door is kept unobstructed.

[0008] In the case of waterlogging, the emergency storage space is used to store rainwater that exceeds the standard, and the special waterproof doors are gradually closed according to the storage level to activate the corresponding number of water storage cavities; the storage level corresponds to different rainfall intensities.

[0009] Furthermore, it also includes a rainwater and sewage regeneration module room, including a rainwater treatment module and a sewage treatment module, which are used for the treatment and recycling of rainwater and sewage respectively;

[0010] The rainwater collected in the rainwater regulating tank is purified and utilized in the rainwater and sewage regeneration module room;

[0011] A rainwater weir is set up between the emergency storage space and the rainwater regulating pool. When the rainwater exceeds the standard in flooding conditions, it is stored in the emergency storage space through the rainwater weir.

[0012] The drainage pump station is used to drain the rainwater in the emergency storage space to the municipal rainwater pipe.

[0013] Furthermore, the drainage pump station is located inside the emergency storage space and includes:

[0014] The drainage pump pit is set at the bottom of the emergency storage space to provide installation space for the submersible pump;

[0015] Submersible pumps for emptying the stored rainwater in the emergency storage space;

[0016] Electric hoist, installed above the submersible pump, used to lift auxiliary equipment during maintenance;

[0017] A rainwater discharge pipe connected to a submersible pump for discharging stored rainwater;

[0018] Drainage ditch, used to discharge waste water after flushing.

[0019] Furthermore, the special waterproof door includes a main door and two auxiliary doors, wherein the auxiliary door 1 is arranged in the main door, and the auxiliary door 2 is arranged outside the main door, and a transition compartment is formed between the two auxiliary doors;

[0020] A first drain port is provided on one side of the auxiliary door, and a second drain port is provided on a second side of the auxiliary door. The first drain port and the second drain port are located on the surface of the transition compartment.

[0021] Furthermore, the side of the main door is connected to the water storage isolation wall through a door hinge; latches are provided at the top and bottom of the main door to increase the compressive strength; handles are installed on the main door and the auxiliary door respectively; and a sealing strip is attached to the main door.

[0022] Furthermore, the underground regulating reservoir is connected to the water inlet culvert, including a rain gauge and water level monitoring equipment control cabinet, a rainwater inlet, a water inlet culvert, a quick-closing gate well, an exhaust pipe, and an energy dissipation staircase; the rain gauge and water level monitoring equipment control cabinet are installed at the low point of the road to monitor the rainwater level on the road during rainfall; a rainwater inlet is set at the end of the water inlet, a stainless steel grille cover is installed on the top of the rainwater inlet, and a movable waterproof cover that is opened for daily maintenance is simultaneously set at the rainwater inlet, and the staff can open the stainless steel grille cover and enter the rainwater inlet through a ladder to perform daily maintenance;

[0023] The rainwater inlet is opened and closed by a hydraulic discharge gate, which is fixed by a hydraulic rod and a pre-buried rotating shaft. The hydraulic rod is controlled by the hydraulic station on the ground and the PLC control cabinet to control the opening of the hydraulic discharge gate.

[0024] The rainwater collection outlet is connected to the quick-closing gate well through the water collection culvert. The quick-closing gate well includes a flow-regulating speed closing gate and a flow-regulating safety gate. The flow-regulating speed closing gate is used to open quickly when collecting waterlogged water. The flow-regulating safety gate is used to prevent rainwater from entering the emergency storage space through the culvert after the rainfall ends when the quick-closing gate fails due to the impact of large amounts of water. The flow-regulating safety gate is connected to the valve opening and closing machine.

[0025] Furthermore, an energy dissipation staircase is provided at the connection between the water collection culvert and the underground space. The energy dissipation staircase is arranged in a ring shape according to the height difference. An exhaust pipe is installed in the middle of the staircase according to the exhaust gas volume of the underground space. The exhaust pipe has holes in the side wall, and the upper end is above the ground and an exhaust cap is provided. A stainless steel wire mesh is provided at the connection between the water collection culvert and the underground space to achieve functional separation of the underground space and the culvert.

[0026] Furthermore, the water inlet and the gate are both provided with movable waterproof covers, and the stairs under the covers can facilitate daily maintenance and post-disaster recovery for maintenance personnel.

[0027] Furthermore, the energy dissipation staircase is designed in combination with the exhaust pipe, the wall of the energy dissipation staircase is designed with cantilever beams, and stairs are arranged around it. An exhaust main pipe is arranged in the middle of the staircase, and air holes are reserved on the side wall of the exhaust pipe according to the number of openings calculated, so that the gas in the underground space can enter the main pipe and be discharged through the exhaust cap on the ground.

[0028] Furthermore, the underground space structure is also equipped with a control system, including a PCL system and a control center, in which a variety of signals are connected to the PCL system, which analyzes and processes the various input signals and then outputs corresponding control instructions so that each device can work together according to the design requirements;

[0029] The PCL system obtains system information of the control center through the switch to achieve linkage, and the control center is used to control multiple systems of the underground space structure.

[0030] Furthermore, the PCL system obtains and processes the parameters monitored by environmental monitoring instruments, rain gauge signals, water accumulation depth, and -3F water level signals, and can achieve coordinated control of fans, water inlet gates, water inlet valves, and flushing pumps.

[0031] Furthermore, the control system switches to different modes according to different rainfall conditions;

[0032] Idle mode: There is no rainfall, no water accumulation around the water inlet, the signal control system has not received any instructions, the hydraulic discharge gate is closed, and water cannot enter.

[0033] Water inflow mode: The rain gauge detects rainfall signals and transmits rainfall information to the control center. At the same time, the ground runoff detection probe transmits water depth signals to the control center. Combined with rainfall data and actual rainfall intensity, the emergency management team reports to the superior department and jointly decides to open the hydraulic discharge gate at the water inlet to start water inflow. The water level monitoring device on the third underground floor monitors the water level in real time, and feeds back the water storage depth signal to the control room, which remotely operates the start and stop of the water inlet.

[0034] Water storage mode: When the water tank is full of water, the concentration parameters of harmful gases (hydrogen sulfide, methane, carbon dioxide, carbon monoxide, etc.) in the water tank are monitored in real time, and the signal is fed back to the control center. When the predetermined concentration is reached, the supply and exhaust fans are turned on to start supplying and exhausting air.

[0035] Drainage mode: When the rainfall signal detected by the rain gauge disappears and the ground runoff detection probe transmits that the depth of accumulated water decreases, the predetermined drainage conditions are met. The rainwater discharge pump of the B3 drainage pump station is turned on to discharge the rainwater from the B3 emergency storage tank to the ground energy dissipation well, and then discharged into the downstream pipeline after energy dissipation.

[0036] After the rainwater in the regulating reservoir is drained, the air detection facilities on the third underground floor are used to ensure that there are no toxic or harmful gases on the third underground floor, and then flushing is carried out to restore the original function of the third underground floor.

[0037] The present invention has the following beneficial effects:

[0038] The present invention combines the project's plane layout and vertical, etc., to comprehensively control rainwater from the source, process and end, and ultimately achieve the goal of purifying water quality and improving the living environment. The main technical measures of "infiltration, storage, retention and purification" are adopted, and the "use" technical measures are appropriately adopted. The treated rainwater is used for roads, greening and car washing, and the excess water is discharged to supplement the groundwater source and reduce the pressure on the urban pipe network. Utilize the surface space of the base, give priority to the use of low-lying terrain, sunken green space, permeable pavement, and reduce the discharge of rainwater.

[0039] In order to efficiently utilize rainwater resources and alleviate urban waterlogging at the same time, a rainwater utilization and storage pool is built in the underground space on the first underground floor to collect rainwater from the municipal rainwater pipeline, and is equipped with a rainwater treatment module. Its main purpose is to collect rainwater, which is then purified and used for watering the garden roads and green spaces of the SCO Square and for car washing.

[0040] The underground space with parking function is given the function of storing and regulating excess rainwater in emergency situations. It is designed in a coupling mode of combining peacetime and emergency situations. The underground space is used normally in normal times. During disasters, people, vehicles, and materials are evacuated. Excess rainwater is introduced for storage and peak shaving. After the rainstorm stops and the waterlogging subsides, the underground space is emptied, cleaned, and disinfected to restore its normal parking function. With relatively low investment, it can effectively improve the urban waterlogging prevention and control standards in the project area and the resilience level of underground space against floods, with significant social and economic benefits.

[0041] According to the current situation, planning and design of the specific project, the coupling space can choose vertical or horizontal superposition coupling mode when regulating and storing water; auxiliary systems such as water collection, emptying, cleaning, control and coupling of various professional facilities are required.

[0042] The calculation of the storage capacity is based on the 3-hour rainfall pattern of short-duration heavy rainfall. It is also safer to consider that it takes a certain amount of time to form effective surface runoff. Various operating conditions are reasonably set in combination with the volume of the existing coupling space.

[0043] During the rainy season, rainwater is collected through rainwater pipes, stored in rainwater regulating tanks, and then enters the clear water tank after being treated by rainwater modules. In the dry season, when there is less rainwater, consider collecting sewage generated by surrounding plots and treating it through sewage treatment modules. After meeting the standards, it will be supplied to greening, road and square watering, and garage car washing.

[0044] The special waterproof door in this application is waterproof and can be opened under pressure under special circumstances, and will not cause a large amount of water to flow back into the adjacent unevacuated space to cause flooding and losses. In case of sudden special circumstances, when the reservoir is flooded and there are people trapped inside and unable to escape, it can be used as the last channel for rescue personnel to enter the reservoir for rescue, avoiding casualties.

[0045] The present invention provides a quick-closing gate well and a controllable gate valve, which can effectively deal with internal waterlogging, allowing the waterlogging to quickly flow into the underground storage space, thereby improving drainage efficiency. Secondly, the design of the energy dissipation staircase can prevent instantaneous large-scale waterlogging from damaging the bottom of the culvert, thereby ensuring the safety of the facility. At the same time, the exhaust pipe is combined with the energy dissipation staircase to synchronously discharge underground gas when the waterlogging flows into the underground space, thereby ensuring a stable drainage process. In addition, the stainless steel grille cover plate prevents clogging by foreign objects and falling of personnel, thereby improving safety. Moreover, through the remote control system, disastrous rainstorms can be responded to in a timely manner, the hydraulic discharge gate can be quickly opened, and the emergency response capability can be improved. Finally, a flow regulation safety gate is provided to prevent secondary damage when the flow regulation speed closing gate is damaged, thereby improving the reliability and stability of the facility.

[0046] This control system has a significant effect on the realization of the function of storing and regulating excess rainwater in the underground parking space under emergency conditions. It is designed in a coupling mode of peace and emergency. The underground space functions normally in normal times, and personnel, vehicles, and materials are evacuated in an emergency. Excess rainwater is introduced for storage and peak shaving. After the rainstorm stops and the waterlogging subsides, the underground space is emptied, cleaned, and disinfected to restore the normal parking function. It can effectively improve the urban waterlogging prevention and control standards in the project area and the resilience level of underground space against floods with relatively low investment, with significant social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the process of the present invention;

[0048] Figure 2 It is a schematic plan view of the vertical superimposed emergency storage space of the present invention;

[0049] Figure 3 It is a cross-sectional schematic diagram of the vertical superimposed emergency storage space of the present invention;

[0050] Figure 4 This is a schematic plan view of a transversely stacked emergency storage space of the present invention;

[0051] Figure 5 It is a cross-sectional schematic diagram of the transversely stacked emergency storage space of the present invention;

[0052] Figure 6 A schematic diagram of setting the road slope in the catchment area of ​​the present invention;

[0053] Figure 7 This is a schematic plan view of the emergency storage space drainage pump station of the present invention;

[0054] Figure 8 It is a cross-sectional schematic diagram of the emergency storage space drainage pump station of the present invention;

[0055] Fig. 9 It is a top plan view of the special waterproof door in the present invention;

[0056] Fig.10 It is a side view schematic diagram of the special waterproof door in the present invention;

[0057] Fig.11 This is a three-dimensional structural diagram of the special waterproof door of the present invention;

[0058] Fig.12 This is a front view of the special waterproof door of the present invention;

[0059] Fig.13 It is a back view of the special waterproof door of the present invention;

[0060] Fig.14 It is a schematic plan view of the water inlet culvert in the present invention;

[0061] Fig.15 It is a cross-sectional schematic diagram of the connection between the water inlet culvert and the underground space in the present invention;

[0062] Fig.16 It is a cross-sectional schematic diagram of the water collection section of the water inlet underground channel of the present invention;

[0063] Fig.17 It is a schematic diagram of the energy dissipation stairs and exhaust plane of the water inlet culvert of the present invention;

[0064] Fig.18 It is a schematic diagram of the energy dissipation stairs and exhaust section of the water inlet culvert in the present invention;

[0065] Fig.19 It is a top view schematic diagram of the water receiving port in the present invention;

[0066] Fig. 20 It is a cross-sectional schematic diagram of the water receiving port in the present invention;

[0067] Fig.21 1 is a schematic top view of a medium-speed closing gate well of the present invention;

[0068] Fig. 22 1 is a schematic top view of a medium-speed closing gate well of the present invention;

[0069] Fig.23 1 is a schematic front view of a medium-speed closing gate well of the present invention;

[0070] Fig.24 is a flow chart of water inlet mode in the control system of the present invention;

[0071] Fig.25 is a flow chart of the water storage mode in the control system of the present invention;

[0072] Fig.26 is a flow chart of the drainage mode in the control system of the present invention;

[0073] Fig. 27It is a control system architecture diagram of the present invention.

[0074] Each number:

[0075] 1. Emergency storage space water inlet channel; 2. Rainwater and sewage regeneration module room; 3. Rainwater regulating pool; 4. Emergency storage space; 5. Storage catchment area; 6. Drainage pump station; 201. Rainwater treatment module; 202. Sewage treatment module; 203. Auxiliary equipment; 301. Rainwater weir; 401. 50-year flooding depth control area; 402. 100-year flooding depth control area; 403. 100-year or more flooding depth control area; 404. Special waterproof door; 405. Parking space; 601. Drainage ditch; 602. Drainage pump pit; 603. Submersible pump; 604. Electric hoist; 605. Rainwater discharge pipe;

[0076] 404, special waterproof door; 4040, transition compartment; 4041, main door; 4042, auxiliary door; 4042a, auxiliary door one; 4042b, auxiliary door two; 4043, hinge; 4044, latch; 4045, handle; 4046, first drain port; 4047, second drain port; 4048, sealing strip;

[0077] 701. Rainwater collection inlet; 702. Quick-closing gate well; 703. Water collection culvert; 704. Exhaust pipe; 705. Exhaust cap; 706. Water inlet of underground emergency regulating and storage tank; 4. Underground regulating and storage space; 801. Energy dissipation stairs; 802. Stainless steel wire mesh; 901. Flow regulation safety gate; 902. Flow rate regulating closing gate; 903. Movable waterproof cover; 904. Ladder; 905. Valve opening and closing machine; 1003. Rotating shaft; 1004. Stainless steel grille cover; 1101. Rain gauge and water level monitoring equipment control cabinet; 1102. Hydraulic station; 1103. PLC control cabinet; 1104. Hydraulic rod; 1105. Hydraulic discharge gate. DETAILED DESCRIPTION

[0078] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0079] See also Figure 2-5Normally, the main function of the underground space is to park social vehicles. The water inlet channel 1 is kept closed, and the special waterproof door 404 is unobstructed to ensure the passage of vehicles and personnel. The rainwater and sewage regeneration module room 2 operates normally. Small-scale and initial rainwater enters the rainwater regulating tank 2 through the municipal pipeline, and is recycled and reused in the rainwater treatment module 201 and connected to the clean water tank for basement flushing, car washing, and square greening. At the same time, the surrounding small-scale municipal sewage enters the sewage treatment module 202 through the municipal pipeline, and is recycled as water for the clean water tank after treatment.

[0080] In case of disaster, the underground space is given an emergency warning, and underground personnel and vehicles are cleared. After confirmation, the special waterproof doors 404 at all levels are closed to prepare for the emergency storage space 4 to enter the water. Later, the storage spaces at all levels are gradually opened according to the storage reserve to minimize the impact on the underground space. Figure 6 As shown, the road slope in the water storage area 5 decreases toward the emergency storage tank 1, and the rainwater exceeding the standard flows along the road to the water inlet channel 1 of the emergency storage space. The gate of the channel water inlet is opened, and the rainwater exceeding the standard enters the storage space 4 to ensure the safety of life and property of the people on the ground.

[0081] The emergency storage space 4 is set up in two ways: vertical stacking and horizontal stacking. The specific advantages are shown in Table 1. Different rainfall intensities correspond to different storage levels. Small-scale rainfall is collected by the rainwater regulating pool 2 and then directly recycled by the rainwater treatment module 201. As the rainfall intensity increases, Figure 2-6 As shown, according to different rainfall intensities, the flooding depth control area 401 with a return period of 50 years, the flooding depth control area 402 with a return period of 100 years, and the flooding depth control area 403 with a return period of more than 100 years are gradually opened.

[0082] Table 1 Comparison between vertical stacking and horizontal stacking

[0083]

[0084] After the disaster, the drainage capacity of the municipal rainwater pipeline was restored. First, the drainage pump station 6 in the underground space started to work, discharging the stored rainwater in the emergency storage space 4 to the municipal rainwater pipeline, and draining the rainwater in the underground storage spaces at all levels. Secondly, the professional ventilation equipment in the underground space was turned on, and the emergency storage tank 4 was flushed with a high-pressure water gun, and the entire underground space was disinfected. Finally, the emergency and daily equipment functions were inspected and repaired, and the normal functions of the underground space were gradually restored.

[0085] Recycling of small-scale rainwater and sewage: In the vacant state, the rainwater gates are all closed. In the early stage of rainfall, the gates are all closed to discharge the initial rainwater into the downstream pipeline. As the rainfall increases, the gates on the municipal rainwater pipeline are opened, the gates in front of the regulating tank 3 are opened, and the rainwater regulating tank 3 begins to take in water. When the water level in the regulating tank reaches the design water level, all gates are closed and the regulating tank stops taking in water. The submersible pump in the regulating tank (not shown in the figure) is turned on to discharge the rainwater into the rainwater treatment module 201. When the liquid level in the regulating tank drops to the pump stop level, the submersible pump is shut down, and the rainwater regulating tank 3 enters the next working cycle. In the flushing state, the rainwater inlet gate is closed, and the rainwater regulating tank is flushed with water in the clean water tank, and the flushing water is discharged to the municipal sewage pipeline by the emptying pump.

[0086] In the vacant state, the gate leading to the sewage regulating tank is opened, the gate leading to the downstream of the municipal pipeline is closed, the gate in front of the sewage regulating tank 202 is opened, and water enters the sewage regulating tank; the submersible mixer is turned on to stir the regulating tank, the sewage submersible pump is turned on, and the sewage in the regulating tank is discharged into the sewage treatment equipment. When the liquid level in the regulating tank drops to the pump stop level, the sewage submersible pump stops, and the regulating tank enters the next working cycle. In the flushing state, the sewage inlet gate is closed, and the sewage regulating tank is flushed with water in the clean water tank, and the flushing water is discharged to the municipal sewage pipeline by the emptying pump.

[0087] The rainwater and sewage purified by the treatment equipment enter the clean water tank and are used for basement flushing, car washing, and square greening irrigation. The water supply is controlled by the gate. When the liquid level in the clean water tank drops to the pump stop level, the clean water pump stops.

[0088] The regulating tank enters the next working cycle. In the flushing state, close the sewage inlet gate, flush the sewage regulating tank with water in the clean water tank, and the flushing water is discharged to the municipal sewage pipeline by the emptying pump.

[0089] The rainwater and sewage purified by the treatment equipment enter the clean water tank and are used for basement flushing, car washing, and square greening irrigation. The water supply is controlled by the gate. When the liquid level in the clean water tank drops to the pump stop level, the clean water pump stops.

[0090] Emergency storage of excessive rainwater:

[0091] (1) Calculation of rainfall and storage capacity

[0092] Calculation of rainstorm intensity:

[0093]

[0094] Where, q is the design rainstorm intensity (L / s·ha); t is the rainfall duration (min); P is the design recurrence period (year);

[0095] Surface runoff calculation:

[0096] Where Q is runoff;

[0097] q——design rainstorm intensity (L / s·ha);

[0098] ——comprehensive runoff coefficient;

[0099] F——catchment area, m 2 .

[0100] Calculation of storage tank volume:

[0101]

[0102] V——effective storage volume, m 3 ;

[0103] α——Through coefficient, the ratio of the design flow rate of the downstream and upstream of the storage tank;

[0104] Q i ——Design flow rate upstream of the storage tank (m 3 / s);

[0105] b, n——rainstorm intensity formula parameters, according to formula (1), b = 10.233, n = 0.654;

[0106] t——rainfall duration, min.

[0107] Calculation of available underground space volume: The three-story underground garage also serves as an emergency storage tank, allowing a maximum flooding depth of 2.4m. Excluding the ineffective area of ​​closed spaces such as walls, equipment rooms, and rainwater treatment and utilization, the effective area is 20,831m 2 Therefore, the total volume of emergency storage space is about 70825m 3 The maximum storage capacity allowed is about 49995m 3 .

[0108] The emergency storage space is based on the 50-, 100-, and 200-year rainstorm recurrence periods, and the required storage capacity is 18222m 3 、36993m 3 、52438m 3 . Three different water depth conditions are set. The maximum storage capacity of the emergency storage pool is between the storage capacity required for a flood event of 100 to 200 years, which means that the waterlogging prevention and control standard of the drainage sub-district where the project is located can be raised from a flood event of 20 years to a flood event of more than 100 years through coupling the emergency storage space with the underground three-story garage, and can be close to the flood event standard of 200 years at the limit.

[0109] The underground space structure that also serves as an emergency storage space for excessive rainwater includes an auxiliary system, which may include a water collection system, an emptying system, a cleaning and disinfection system, and an intelligent control system.

[0110] The water collection system is a culvert drainage structure connected to the emergency storage space, including vertical peripheral roads, water collection ports, water inlet gates, water inlet pipes, quick-closing gates for flood prevention, protective isolation nets, and early warning and control systems. The roads around the project site are adjusted vertically to match the number and position of the road low points with the water collection ports of the emergency storage tank, so that surface runoff can be discharged to the water collection ports; the maximum storage capacity is about 49995m 3 , based on water inlet time ≤ 3hr, water inlet flow ≥ 4.63m 3 / s; for example, set up 3 water intakes, 2 water inlet culverts with a cross-section of 2m×2m, 2 water inlet sluice wells, and 2 energy dissipation wells about 15m deep; install 1 water inlet sluice and 1 anti-flooding fast closing gate in each water inlet sluice well, and set a protective isolation net at the end of the channel into the underground space to prevent people and small animals from entering the water inlet culvert.

[0111] Cooperate with underground emergency storage tanks to collect water and dissipate energy, such as Figure 14-16 The device includes a rainwater collection well 701, and a quick-closing gate well 702 located in the middle of a water collection culvert 703. The water collection culvert 703 is connected to the underground storage space 4. The flood water is collected through the rainwater collection inlet 701 and enters the culvert 703. The gate valve in the gate valve well 702 is opened synchronously to allow the flood water to flow into the energy dissipation staircase 801, and the flood water flows into the underground storage space 4 along the staircase.

[0112] like Fig.14 , 16 The exhaust pipe 704 is connected from the water collection culvert 703 to the ground and connected to the exhaust cap 705. The exhaust cap 705 is arranged according to the green vegetation of the ground landscape and is integrated into the overall landscape effect in combination with the landscape design. When the flood water flows into the underground storage space 4 through the water collection culvert 703, the gas in the underground storage space 4 is discharged synchronously through the personnel entrance and exit and the ground exhaust pipe 704. The connection between the water collection culvert 703 and the underground storage space 4 with a height difference is shown in FIG. Fig.14 As shown, an energy dissipation staircase 801 is provided to prevent instantaneous large-scale flooding from causing destructive impact on the bottom of the water inlet culvert 703. The flooding water flows down along the energy dissipation staircase 801 in a rotation manner, and flows from the water collection position with a higher elevation into the water inlet 706 of the underground emergency regulating storage tank with a lower elevation.

[0113] like Fig.17 , 18The energy dissipation stairs 801 shown are designed in combination with the exhaust pipe 704, and the exhaust pipe 704 is located in the middle of the energy dissipation stairs 801. The flood water flows into the underground storage space 4 through the stairs, and the gas in the underground space is discharged at the same time. The energy dissipation stairs 801 are composed of steps and platforms, which are distributed in a ring in the underground channel shaft. The first platform is connected to the bottom plate of the water inlet 703, and the bottom step of the stairs is connected to the water inlet 706 of the underground emergency storage tank. The exhaust pipe 704 is combined with the staircase platform at the top plate of the water inlet 706 of the underground emergency storage tank as a gas collection port.

[0114] like Fig.19 , 20 The stainless steel grille cover 1004 above the rainwater collection port 701 shown can prevent foreign objects from blocking the rainwater port and preventing people from falling. When a disastrous rainstorm occurs, the road flooding data is sent to the cloud through the rain gauge and water level monitoring equipment control cabinet 1101 for the management and control personnel to decide when to use the underground storage space. The management and control personnel remotely control the control cabinet 1103 to operate the hydraulic rod 1104 through the hydraulic station 1102, and the hydraulic discharge gate 1105 is quickly converted from the closed state (opening 0°) to the open state (opening 90°) through the rotating shaft 1003, and the flood water enters the culvert through the rainwater collection port 701.

[0115] like Figure 21-23 The valve in the fast closing gate valve well shown is opened and closed by the hoist 905. The gate valve well is provided with a flow regulating safety gate 901 and a flow rate regulating closing gate 902 according to the incoming water direction. After a flood disaster, when the flow rate regulating closing gate 902 is damaged due to excessive water volume, the flow regulating safety gate 901 can be closed to prevent secondary damage to the flow rate regulating closing gate caused by small-scale rainfall during the maintenance process.

[0116] See also Figure 8 The emptying system includes the drainage pump room 6, the outlet pipe 605 and the control system, etc. The maximum storage capacity of the emergency storage tank is about 49995m 3 , according to the emptying time ≤ 24hr, drainage capacity ≥ 0.58m 3 / s; Two emptying pump rooms and two DN500 drainage pressure pipes 605 are set up; each pump room is equipped with two submersible drainage pumps 603, and the flow rate of a single pump is 521m 3 / h, with a lift of 24m, the stored rainwater is finally discharged to the east drainage ditch.

[0117] Cleaning and disinfection system: After the storage tank is emptied, a thorough cleaning of the environment is required. Due to the low frequency of use and the guarantee of the number of parking spaces at ordinary times, the cleaning method does not adopt the flushing method of the dedicated storage tank, but uses a high-pressure water gun to flush the residual sludge, garbage, etc. A total of 25 flushing water points are set up, and the flushing water source is treated rainwater or tap water. Large suspended solids after flushing are manually cleaned and transported out, and the wastewater after flushing can be uniformly discharged into the municipal pipeline through the drainage ditch 601 and submersible pump 603 set up on the third underground floor.

[0118] The disinfection of objects, surfaces of facilities and equipment, walls and floors in the emergency storage space shall refer to GB 27952-2020 "Hygiene requirements for disinfectants for ordinary object surfaces". Two sets of manual sprayers are kept in the warehouse on a daily basis. After the storage tank is drained and flushed, chlorine-containing disinfectant with an effective chlorine content of 500 mg / L is used for manual spraying. After the disinfection is completed, forced ventilation is carried out.

[0119] The smart control system is connected and built with the smart control system of the entire building, including early warning, video monitoring, voice intercom, control, communication and other systems. The early warning system mainly analyzes and judges data such as weather forecasts, historical rainfall models and regional flood warnings, issues flood warnings, evacuates personnel, vehicles and other materials on the third underground floor in advance, and prepares for water storage. The monitoring system monitors the entire process of evacuation, water storage, rescue, emptying, cleaning, disinfection and recovery. The voice intercom system realizes information communication of the above processes and issues relevant instructions. The control system uses facilities such as liquid level sensing to realize the start and stop of water collection, emptying and other equipment and control of different operating conditions. The communication system uploads relevant information to achieve communication with relevant departments.

[0120] See also Figure 24-27 The PCL system obtains and processes the parameters monitored by environmental monitoring instruments, rain gauge signals, water accumulation depth, and -3F water level signals, and can realize the linkage control of fans, water inlet gates, water inlet valves, and flushing pumps. For example, the rainfall intensity signal is received by the rain gauge 1101 and the ground runoff sensor. The rain gauge 1101 can monitor the number of millimeters of rainfall and feed it back into the current rainfall recurrence period. The runoff sensor can monitor the current ground water accumulation depth, and the rainfall recurrence period and the ground water accumulation depth are digitally displayed on the central control display screen; at this time, the rainfall intensity and the ground water accumulation depth reach the critical value at the same time, and the emergency management team can jointly refer to the resolution to open the gate of the water intake, so that the ground water begins to pass through the water intake water collection culvert 703, and then enter the underground three-layer storage space 4 through the vertical shaft for water storage and regulation; at this time, the liquid level display device in the reservoir starts to monitor the liquid level and feeds the liquid level back to the central control room. After reaching the predetermined specified liquid level, the central control room issues a command to close the gate of the water intake and stop the process; to ensure safety, the central control room will also issue an instruction to close the quick-closing gate well 702 to ensure that ground rainwater cannot continue to enter the B3 layer storage space 4.

[0121] After the underground three-layer regulating and storage tank reaches the highest water level, water will be temporarily stored in the reservoir 4 before the external waterlogging disaster is eliminated. At this time, it is necessary to rely on the gas monitoring equipment installed in the reservoir 4 to closely monitor whether there are toxic and harmful gases (hydrogen sulfide, methane, carbon dioxide, carbon monoxide, etc.) and their concentration. When the required concentration limit is reached, a signal must be transmitted to the central control room to automatically turn on the ventilation equipment, force exhaust air, and alarm to prevent people from entering or approaching.

[0122] The rainfall signal is received by the rain gauge 1101 and the ground runoff sensor. After confirming that the external rainfall has stopped and the ground water has receded, the signal can be transmitted to the central control room. The central control room issues an order to start the underground third-floor drainage pump 603 to drain water, which is discharged into the municipal rainwater pipe through the pipe, thereby draining the water in the water storage tank 4.

[0123] See also Figure 9-13 The special waterproof door 404 of the present invention includes a main door 4041 and two auxiliary doors 4042. An auxiliary door 1 4042a is made on the main door, and the auxiliary door 1 is expanded outward, and an auxiliary door 2 4042b is expanded, and a transition cabin 4040 is formed between the auxiliary door 1 4042a and the auxiliary door 2 4042b. The main door 4041 and the auxiliary door 4042 in the present application can be opened from the outside and the inside, and a personnel opening handle 4045 is set inside and outside. Fixed bolts 4044 are set at the top and bottom of the main door to increase the compressive strength. The height of the auxiliary door 4042 can be set to 1.5m and the width can be 0.8m. The width of the transition cabin 4040 is 1.5m, which can carry 2 to 3 people. Normally, the main door 4041 is opened to ensure the normal passage of personnel and vehicles; during emergency water storage, the main door 4041 is closed, the latch 4044 is stuck, and the auxiliary door 4042 is also closed synchronously; during internal rescue, the auxiliary door 2 can be opened to enter the transition cabin, and then the auxiliary door 1 can be opened to enter the water reservoir for rescue, so as to achieve the purpose of rescue personnel entering smoothly and the rescued personnel escaping smoothly to the external space.

[0124] The rescue process is as follows: when an outsider enters, he first opens the secondary door 2 4042b to enter the transition cabin 4040, wearing a pressure-resistant, impact-resistant, oxygen-supplying protective suit. At this time, the secondary door 1 4042a is closed, and the water in the reservoir cannot enter the transition cabin 4040;

[0125] When the rescuers are ready, close the auxiliary door 2 4042b, and use hydraulic pressure to open the first drain port 4046 at the bottom of the auxiliary door 1 4042a, so that the water in the reservoir can enter the transitional cabin through the drain port. After the transitional cabin is filled with water and the pressure difference between the inside and outside of the reservoir is balanced, use hydraulic pressure to open the auxiliary door 1, and the personnel can enter the bottom of the pool to carry out rescue.

[0126] Bring the rescued personnel into the transition cabin 4040, close the auxiliary door 1 4042a, open the second drain port 4047 at the bottom of the auxiliary door 2 4042b, drain the water in the transition cabin, and then open the auxiliary door 2 4042b to allow the personnel to enter the external space and complete the rescue.

[0127] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An underground space structure that also serves as an emergency storage space for excessive rainwater, characterized in that: include: An emergency storage space (4), a water inlet channel (1) and a rainwater regulating pool (3), wherein the rainwater regulating pool (3) collects rainwater by opening the water inlet channel (1), and the emergency storage space (4) is arranged beside the rainwater regulating pool (3) and can introduce rainwater exceeding the standard that the rainwater regulating pool (3) cannot accommodate; the emergency storage space (4) is a transversely stacked storage space, which includes at least two water storage cavities, and adjacent water storage cavities are connected or separated by a special waterproof door (404); Under normal conditions, the emergency storage space (4) is used as an underground garage to park vehicles, the water inlet channel (1) is kept in a normally closed state, and the special waterproof door (404) is kept unobstructed; In the case of waterlogging, the emergency storage space (4) is used to store rainwater exceeding the standard, and the special waterproof door (404) is gradually closed according to the storage level to activate a corresponding number of water storage cavities; the storage level corresponds to different rainfall intensities.

2. The underground space structure that also serves as an emergency storage space for excessive rainwater according to claim 1 is characterized in that: It also includes a rainwater and sewage regeneration module room (2), including a rainwater treatment module (201) and a sewage treatment module (202), which are used for the treatment and recycling of rainwater and sewage respectively; The rainwater collected by the rainwater regulating tank (3) is purified and utilized in the rainwater and sewage regeneration module room (2); A rainwater weir (301) is provided between the emergency storage space (4) and the rainwater regulating pool (3), and rainwater exceeding the standard in a flood state is stored in the emergency storage space (4) through the rainwater weir (301); The drainage pump station (6) is used to drain the rainwater in the emergency storage space (4) to the municipal rainwater pipeline.

3. The underground space structure that also serves as an emergency storage space for excessive rainwater according to claim 2 is characterized in that: The drainage pump station (6) is located inside the emergency storage space (4), and comprises: a drainage pump pit (602) arranged at the bottom of the emergency storage space (4) and used to provide an installation space for a submersible pump (603); A submersible pump (603) for draining the stored rainwater in the emergency storage space (4); An electric hoisting hoist (604) is arranged above the submersible pump (603) and is used to lift auxiliary equipment during maintenance; A rainwater discharge pipe (605) connected to the submersible pump (603) for discharging stored rainwater; The drainage ditch (601) is used to discharge the waste water after flushing.

4. The underground space structure that also serves as an emergency storage space for excessive rainwater according to claim 1 is characterized in that: The special waterproof door (404) comprises a main door (4041) and two auxiliary doors (4042), wherein the first auxiliary door (4042a) is arranged in the main door (4041), the second auxiliary door (4042b) is arranged outside the main door (4041), and a transition cabin (4040) is formed between the two auxiliary doors (4042); A first drain port (4046) is provided on the side of the auxiliary door 1 (4042a), and a second drain port (4047) is provided on the side of the auxiliary door 2 (4042b). The first drain port (4046) and the second drain port (4047) are located on the surface of the transition cabin (4040).

5. The underground space structure that also serves as an emergency storage space for excessive rainwater according to claim 4 is characterized in that: The side of the main door (4041) is connected to the water storage isolation wall through a door hinge (4043); latches (4044) are arranged at the top and bottom of the main door (4041) to increase the compressive strength; the main door (4041) and the auxiliary door 1 (4042a) are respectively installed with handles (4045); and a sealing strip (4048) is attached to the main door (4041).

6. The underground space structure that also serves as an emergency storage space for excessive rainwater according to claim 1 is characterized in that: The emergency storage space (4) is externally connected to a water inlet culvert, including a rain gauge and water level monitoring equipment control cabinet (1101), a rainwater inlet (701), a water inlet culvert (703), a quick-closing gate well, an exhaust pipe (704), and an energy dissipation staircase (801); the rain gauge and water level monitoring equipment control cabinet (1101) is installed at a low point of the road to monitor the rainwater level on the road during rainfall; a rainwater inlet (701) is provided at the end of the water inlet culvert (703), a stainless steel grille cover (1004) is installed on the top of the rainwater inlet (701), and a movable waterproof cover (903) that is opened for daily maintenance is simultaneously provided at the rainwater inlet (701), and staff can open the stainless steel grille cover (1004) and enter the rainwater inlet (701) through a ladder to perform daily maintenance; The rainwater inlet (701) is opened and closed by a hydraulic discharge gate (1105), which is fixed by a hydraulic rod (1104) and a pre-buried rotating shaft (1003). The hydraulic rod (1104) is controlled by a hydraulic station (1102) on the ground and a PLC control cabinet (1103) to control the opening of the hydraulic discharge gate (1105); The rainwater receiving port (701) is connected to the quick-closing gate well (702) through the water receiving culvert (703). The quick-closing gate well (702) includes a flow-regulating speed closing gate (902) and a flow-regulating safety gate (901). The flow-regulating speed closing gate (902) is used to quickly open when collecting waterlogging. The flow-regulating safety gate (901) is used to prevent rainwater from entering the emergency storage space (4) through the culvert after the rainfall ends when the quick-closing gate fails due to a large amount of water impact and cannot be closed. The flow-regulating safety gate (901) is connected to a valve opening and closing machine (905).

7. The underground space structure that also serves as an emergency storage space for excessive rainwater according to claim 6 is characterized in that: An energy dissipation staircase (801) is provided at the connection between the water collection culvert (703) and the underground space. The energy dissipation staircase (801) is arranged in a ring shape according to the height difference. An exhaust pipe (704) is installed in the middle of the staircase according to the exhaust gas volume of the underground space. The exhaust pipe (704) has a hole in the side wall, and the upper end is above the ground and is provided with an exhaust cap (705). A stainless steel wire mesh (802) is provided at the connection between the water collection culvert (703) and the underground space to achieve functional separation of the underground space and the culvert.

8. The underground space structure that also serves as an emergency storage space for excessive rainwater according to claim 2 is characterized in that: It also includes a control system, including a PCL system and a control center, in which various signals are connected to the PCL system, which analyzes and processes the various input signals and then outputs corresponding control instructions so that various devices can work together according to the design requirements; The PCL system obtains system information of the control center through the switch to achieve linkage, and the control center is used to control multiple systems of the underground space structure.

9. The underground space structure that also serves as an emergency storage space for excessive rainwater according to claim 8, characterized in that: The PCL system obtains and processes the parameters monitored by environmental monitoring instruments, rain gauge signals, water accumulation depth, and -3F water level signals, and can achieve coordinated control of fans, water inlet gates, water inlet valves, and flushing pumps.

10. The underground space structure that also serves as an emergency storage space for excessive rainwater according to claim 8, characterized in that: The control system switches to different modes according to different rainfall conditions; Idle mode: When there is no rainfall, the hydraulic discharge gate is closed and water cannot enter; Water inlet mode: The rain gauge and the surface runoff detection probe transmit signals, and the water inlet gate is opened to let water in according to relevant conditions. The underground three-layer water level monitoring device feedbacks signals, and the control room remotely operates the water inlet gate; Water storage mode: When the pool is full of water, the concentration of harmful gases is monitored and the supply and exhaust fans are turned on when the predetermined concentration is reached; Drainage mode: When the rainfall signal of the rain gauge disappears and the depth of surface runoff water decreases to meet the predetermined conditions, the submersible pump of the B3 drainage pump station is turned on to drain water. After drainage, the gas is tested to ensure that there is no toxic or harmful gas, and then the function is restored by flushing.

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