Intelligent drainage system and method for bottom plate post-cast strip

Abstract

The invention relates to the technical field of bottom plate post-cast strip drainage, and provides a bottom plate post-cast strip intelligent drainage system and method, and the bottom plate post-cast strip intelligent drainage system comprises an intelligent monitoring system and a drainage system. The intelligent monitoring system collects data in real time through the water level sensor, and the central control cabinet automatically opens and closes the valve according to the target water level. The drainage system is composed of a steel sleeve pressure reducing hole, a drainage blind pipe and a water collecting well, and underground water is guided and drained through a preset gradient. The device solves the buoyancy problem when the pouring belt is closed before and after the top plate is covered with soil, reduces the leakage risk, optimizes the construction process, and achieves remote precise control.

Description

Technical Field

[0001] The invention belongs to the technical field of basement post - casting belt drainage, and particularly relates to an intelligent drainage system and method for basement post - casting belt. Background Technique

[0002] During building construction, it is necessary to reserve basement post - casting belts. For projects that do not require dewatering wells and have no confined water, when the groundwater level around the basement increases, the groundwater generally overflows through the reserved basement post - casting belts. The expansion post - casting belt of the basement floor is generally closed with the corresponding basement floor post - casting belt concrete after the concrete age of both sides is completed, and the settlement post - casting belt of the basement floor is generally closed with the corresponding basement floor post - casting belt concrete after the main building settlement is stable. When constructing using conventional processes, the following problems exist: (1) When the basement floor post - casting belt concrete is closed, if the basement top slab is not covered with soil, and the anti - floating design of the basement floor generally considers the weight of the soil covering the top slab. When the top slab is not covered with soil, the anti - floating ability of the basement floor is weak. The buoyancy caused by the groundwater around the basement will impact the weak part of the basement floor, namely the post - casting belt, resulting in continuous leakage of the basement floor post - casting belt. Using the method of grouting to plug the leak can only treat the symptoms but not the root cause, forming a quality hazard; (2) If the basement floor post - casting belt is closed after the top slab is covered with soil, although the anti - floating ability of the basement floor can completely offset the buoyancy caused by the groundwater around the basement at this time, generally, the construction of the top slab soil covering is carried out after the secondary structure and rough decoration construction are completed. The cycle from the reservation of the post - casting belt to the completion of the soil covering is too long, resulting in too long idle time for the construction process of the basement floor, which is not conducive to fulfilling the construction period. After the top slab is covered with soil, the basement electrical and mechanical installation process, the horizontal transportation of materials and the material stacking yard for the subsequent construction of the main building are all located in the basement, doubling the difficulty of organizing the construction of the basement floor. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the invention provides an intelligent drainage system and method for basement post - casting belt, which can reduce the risk of basement floor buoyancy, shorten the construction period and reduce the leakage hazard by real - time dynamically monitoring the water level and automatically draining water.

[0004] To achieve the above object, the invention provides the following technical solutions: In the first aspect, the invention provides an intelligent drainage system for basement post - casting belt, including a drainage system and an intelligent monitoring system; The drainage system includes: steel sleeve pressure - reducing holes, a drainage pipe assembly and a sump; a plurality of the steel sleeve pressure - reducing holes are arranged at longitudinal intervals along the basement post - casting belt, and the bottom is buried to the cushion layer of the basement post - casting belt; the drainage pipe assembly is arranged on both sides of the basement post - casting belt and communicates the sump and the steel sleeve pressure - reducing holes; The intelligent monitoring system includes a water level sensor, a central data acquisition processor, a central control cabinet and a valve; the valve is arranged in the drain pipe assembly; the water level sensor is arranged in the steel casing pressure relief hole; the central data acquisition processor is connected to the water level sensor through a wireless transmission module to obtain the measured water level H in real time; the central control cabinet controls the opening and closing of the valve according to the target water level H1 set by the central data acquisition processor and the obtained measured water level H to control the underground water level in real time.

[0005] Further, the drain pipe assembly includes a straight joint, a tee joint, a drainage blind pipe and a drain pipe; the drainage blind pipe is longitudinally arranged along the post-cast strip of the floor slab, one end of which is communicated with the straight joint through the tee joint, and the other end is communicated with the drain pipe through another tee joint; the drain pipe is communicated with the catch basin; the straight joint is communicated with the side wall of the steel casing pressure relief hole.

[0006] Further, the steel casing pressure relief hole is composed of a water-stop steel casing and two transverse steel pipes welded together. Symmetric holes are reserved on the side wall of the water-stop steel casing for welding the transverse steel pipes, and the other ends of the transverse steel pipes are connected to the straight joint.

[0007] Further, a post-cast strip water-stop steel plate is arranged at the construction joint formed by the post-cast strip of the floor slab and the floor slabs on both sides thereof; the drain pipe assembly and the transverse steel pipes are arranged above the post-cast strip water-stop steel plate; the drainage blind pipe is fixed to the steel bars arranged at the construction joint.

[0008] Further, a steel casing water-stop ring is arranged on the side wall of the water-stop steel casing. The steel casing water-stop ring is located within the post-cast strip of the floor slab and is arranged at a height lower than that of the post-cast strip water-stop steel plate.

[0009] Further, a filter screen and non-woven fabric are installed at the bottom of the steel casing pressure relief hole, and the bottom of the steel casing pressure relief hole is inserted into the soil layer at the bottom of the cushion layer of the post-cast strip of the floor slab.

[0010] Further, filter holes are provided on the side wall of the drainage blind pipe.

[0011] Further, the drain pipe is pre-buried between the post-cast strip of the floor slab and the catch basin, and the drain pipe is provided with a slope that slopes downward from the post-cast strip of the floor slab to the catch basin.

[0012] In a second aspect, the present invention provides a construction method for an intelligent drainage system for a post-cast strip of a floor slab. The drainage system adopts the above-mentioned intelligent drainage system for a post-cast strip of a floor slab, and the construction method includes the following steps: According to the designed width and height of the post-cast strip of the floor slab, a plurality of the steel casing pressure relief holes are prefabricated and arranged at longitudinal intervals along the post-cast strip of the floor slab. The bottom of the steel casing pressure relief hole is buried into the soil layer at the bottom of the cushion of the post-cast strip of the floor slab, and the top of the steel casing pressure relief hole is flush with the top of the post-cast strip of the floor slab; In the concrete closing construction stage of the post-cast strip of the floor slab, according to the arrangement positions of the steel casing pressure relief holes, the drain pipe assemblies are prefabricated and installed; the drain pipe assemblies include straight joints, tee joints, drainage blind pipes and drain pipes; the drainage blind pipes are longitudinally buried along the post-cast strip of the floor slab above the steel water stop belt at the construction joint of the post-cast strip of the floor slab, and the drainage blind pipes are fixed to the steel bars arranged at the construction joint; one end of the drainage blind pipe is communicated with the straight joint through the tee joint, and the other end is communicated with the drain pipe through another tee joint; the drain pipe is communicated with the catch basin; the straight joint is communicated with the side wall of the steel casing pressure relief hole; The water level sensor is arranged at the target water level of the steel casing pressure relief hole, and the wireless connection of the water level sensor, the central data acquisition processor, the central control cabinet and the valve is completed; The central control cabinet controls the opening and closing of the valve according to the target water level H1 set by the central data acquisition processor and the measured water level H obtained;

[0013] Further, the following steps are further included: after the construction of the soil covering on the basement top slab is completed, when the phreatic water around the basement is lower than the basement floor slab, the inside of the steel casing pressure relief hole is closed. When closing, it is ensured that there is no accumulated water in the steel casing pressure relief hole, the intelligent monitoring system is removed, and at the same time, it is closed with micro-expansion impermeable concrete with the same strength grade as the post-cast strip of the floor slab. After the concrete curing is completed, the top of the steel casing pressure relief hole is closed with a steel plate.

[0014] The beneficial effects of the present invention are as follows: By the cooperation of the intelligent monitoring system and the drainage system, the water level condition of the post-cast strip of the floor slab can be monitored in real time. When the measured water level exceeds the target water level, the phreatic water in the surrounding environment of the basement is discharged into the catch basin through the drainage system, which can reduce the buoyancy borne by the bottom of the floor slab. The post-cast strip of the floor slab can be closed before the soil covering on the basement top slab, avoiding the damage of the phreatic water in the surrounding environment of the basement to the floor slab, and the floor slab floor process can be interspersed, reducing the idleness of the operation surface and reducing the quality risk of the long-term exposure of the post-cast strip steel bars. At the same time, it realizes the remote control of the dewatering equipment by the operator in a fixed place, reduces the labor intensity, and reduces the human error through the scientific accuracy of the data feedback by the monitoring equipment arranged on site. Description of the Drawings

[0015] Figure 1 It is a vertical structural schematic diagram of the intelligent drainage system for the post-cast strip of the floor slab of the present invention; Figure 2 It is the schematic plan view of the intelligent drainage system for the post-cast strip of the floor slab of the present invention; Figure 3 It is the schematic principle diagram of the intelligent monitoring system of the present invention; Figure 4 It is the schematic control flow diagram of the intelligent monitoring system of the present invention.

[0016] In the figure: 1 - intelligent monitoring system; 2 - central data acquisition processor; 3 - central control cabinet; 4 - drainage system; 5 - floor slab; 6 - post-cast strip of the floor slab; 7 - waterstop steel plate of the post-cast strip; 8 - groundwater; 9 - catch basin; 11 - water level sensor; 12 - wireless transmission module; 13 - AC contactor; 14 - valve; 41 - steel casing pressure reduction hole; 42 - steel casing waterstop ring; 43 - straight joint; 44 - tee joint; 45 - drainage blind pipe; 46 - drain pipe. Specific embodiments

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] As Figures 1-4 shown, the present invention provides an intelligent drainage system for the post-cast strip of the floor slab, which includes a drainage system and an intelligent monitoring system 1.

[0019] Among them, the drainage system 4 includes: steel casing pressure reduction holes 41, a drain pipe assembly, and a catch basin 9. It should be emphasized that the "drainage system" here is not equivalent to the "intelligent drainage system for the post-cast strip of the floor slab" in this case. The "drainage system" is a subsystem within the "intelligent drainage system for the post-cast strip of the floor slab". The "drainage system" independently mentioned in this application all refers to the subsystem of the "intelligent drainage system for the post-cast strip of the floor slab". As Figure 3 shown, there can be multiple drainage systems 4, and each drainage system 4 corresponds to at least one water level sensor 11 and valve 14 of the intelligent monitoring system 1.

[0020] Multiple steel casing pressure reduction holes 41 are arranged at longitudinal intervals along the post-cast strip of the floor slab 6, and the bottom is buried into the soil layer at the bottom of the cushion of the post-cast strip of the floor slab 6; the drain pipe assembly is arranged on both sides of the post-cast strip of the floor slab 6 and connects the catch basin 9 and the steel casing pressure reduction holes 41.

[0021] The drain pipe assembly on one side of the post-cast strip of the floor slab 6 includes a straight joint 43, a tee joint 44, a drainage blind pipe 45, and a drain pipe 46. Among them, the straight joint 43, the tee joint 44, and the drainage blind pipe 45 are all made of PVC material.

[0022] The blind drainage pipe 45 is longitudinally arranged along the floor post-cast strip 6. One end of it is connected to the straight joint 43 through a three-way joint 44, and the other end is connected to the drainage pipe 46 through another three-way joint 44. The drainage pipe 46 is connected to the catch basin 9. The straight joint 43 is connected to the side wall of the steel casing pressure relief hole 41.

[0023] The steel casing pressure relief hole 41 is composed of a water-stop steel casing and two transverse steel pipes welded together. Symmetrical holes are reserved on the side wall of the water-stop steel casing for welding the transverse steel pipes, and the other ends of the transverse steel pipes are connected to the straight joint 43.

[0024] A post-cast strip water-stop steel plate 7 is provided at the construction joint formed by the floor post-cast strip 6 and the floor on both sides of it. The drainage pipe assembly and the transverse steel pipes are arranged above the post-cast strip water-stop steel plate 7. The blind drainage pipe 45 is fixed to the steel bars provided at the construction joint.

[0025] A steel casing water-stop ring 42 is provided on the side wall of the water-stop steel casing. The steel casing water-stop ring 42 is located within the floor post-cast strip 6 and is set at a height lower than the post-cast strip water-stop steel plate 7.

[0026] A filter screen and non-woven fabric are installed at the bottom of the steel casing pressure relief hole 41, and the bottom of the steel casing pressure relief hole 41 is inserted into the soil layer at the bottom of the cushion layer of the floor post-cast strip 6.

[0027] The drainage pipe 46 is pre-buried between the floor post-cast strip 6 and the catch basin 9, and the drainage pipe 46 is provided with a slope that slopes downward from the floor post-cast strip 6 to the catch basin 9.

[0028] The intelligent monitoring system 1 includes a water level sensor 11, a central data acquisition and processor 2, a central control cabinet 3, and a valve 14. The valve 14 is arranged inside the straight joint 43 of the drainage pipe assembly. The water level sensor 11 is arranged inside the steel casing pressure relief hole 41. The central data acquisition and processor 2 is connected to the water level sensor 11 through a wireless transmission module 12 to obtain the measured water level H in real time. The central control cabinet 3 controls the opening and closing of the valve 14 according to the target water level H1 set by the central data acquisition and processor 2 and the obtained measured water level H to control the underground water level in real time.

[0029] In this embodiment, the intelligent drainage system for the floor post-cast strip is designed according to the geological conditions without dewatering wells and without confined water.

[0030] Based on the same inventive concept, the present invention also proposes a construction method for the above-mentioned intelligent drainage system for the floor post-cast strip, including the following steps: According to the designed width and height of the floor post-cast strip 6, a plurality of steel casing pressure relief holes 41 are prefabricated and arranged at longitudinal intervals along the floor post-cast strip 6. The bottom of the steel casing pressure relief hole 41 is buried into the soil layer at the bottom of the cushion layer of the floor post-cast strip 6, and the top of the steel casing pressure relief hole 41 is flush with the top of the floor post-cast strip 6.

[0031] During the concrete closing construction stage of the basement slab post-cast strip 6, according to the layout position of the steel casing pressure relief holes 41, prefabricate and install the drain pipe assembly; the drain pipe assembly includes a straight joint 43, a tee joint 44, a drainage blind pipe 45, and a drain pipe 46; bury the drainage blind pipe 45 longitudinally along the basement slab post-cast strip 6 above the steel plate waterstop of the construction joint of the basement slab post-cast strip 6 (i.e., the post-cast strip waterstop steel plate 7), and fix the drainage blind pipe 45 to the steel bars arranged at the construction joint; connect one end of the drainage blind pipe 45 to the straight joint 43 through a tee joint 44, and the other end to the drain pipe 46 through another tee joint 44; connect the drain pipe 46 to the sump 9; connect the straight joint 43 to the side wall of the steel casing pressure relief hole 41.

[0032] Set the water level sensor 11 at the target water level of the steel casing pressure relief hole 41, and complete the wireless connection of the water level sensor 11, the central data acquisition processor 2, the central control cabinet 3, and the valve 14.

[0033] The central control cabinet 3 controls the opening and closing of the valve 14 according to the target water level H1 set by the central data acquisition processor 2 and the measured water level H obtained.

[0034] As Figure 4 shown, the specific control process of the intelligent monitoring system 1 is as follows: Step1: Start the system and set the target water level H1 of the steel casing pressure relief hole 41; Step2: When the measured water level H of the steel casing pressure relief hole 41 is greater than the target water level H1, the valve 14 controlled by the central control cabinet 3 opens to discharge the groundwater; Step3: When the measured water level H of the steel casing pressure relief hole 41 is less than the target water level H1, the valve 14 controlled by the central control cabinet 3 closes.

[0035] After the construction of the basement top slab soil covering is completed and the surrounding environment groundwater of the basement is lower than the basement floor, seal the inside of the steel casing pressure relief hole 41, ensure that there is no accumulated water in the steel casing pressure relief hole 41 during sealing, remove the intelligent monitoring system 1, and at the same time use micro-expansion impermeable concrete with the same strength grade as the basement slab post-cast strip 6 for sealing. After the concrete curing is completed, seal the top of the steel casing pressure relief hole 41 with a steel plate.

[0036] Specifically, the manufacturing and installation process of the drainage system in this embodiment is as follows: Before installing the drainage system 4 and the intelligent monitoring system 1, first, according to the width of 800 mm and the height of 700 mm of the post-cast strip 6 of the floor slab (also simply referred to as the post-cast strip), a galvanized water-stop steel casing with a diameter of DN150 mm and a height of 750 mm is used. The internal space of the galvanized water-stop steel casing serves as the steel casing pressure-reducing hole 41. Two symmetrically arranged holes with a diameter of 25 mm are reserved on the side wall of the galvanized water-stop steel casing at a height of 550 mm. Two galvanized steel pipes (i.e., horizontal steel pipes) with a diameter of DN25 mm and a length of 250 mm are installed in the two holes respectively. Among them, one end of the galvanized steel pipe is provided with a DN20 mm thread head, and the other end is not provided with a thread head. The galvanized water-stop steel casing is welded and connected to the other end of the galvanized steel pipe without the DN20 mm thread head to be closed, forming a "cross"-shaped steel casing pressure-reducing hole 41; multiple steel casing pressure-reducing holes 41 are arranged along the longitudinal direction of the post-cast strip 6 of the floor slab at a certain interval. The arrangement quantity and interval need to be comprehensively considered according to the anti-floating design of the basement floor slab and the anti-floating check before the top slab is not covered with soil. In this case, according to the design review and check situation, each steel casing pressure-reducing hole 41 is set to cover a diameter of 60 m.

[0037] During the construction stage of the post-cast strip 6 of the floor slab, among them, when constructing the cushion of the post-cast strip 6 of the floor slab, the bottom of the processed steel casing pressure-reducing hole 41 (i.e., the galvanized water-stop steel casing) is inserted into the PVC floor drain cover with an inner diameter of 150 mm. The outside of the floor drain cover is wrapped with non-woven fabric and inserted into the soil layer at the bottom of the cushion of the post-cast strip 6 of the floor slab and pre-buried into the cushion of the post-cast strip 6 of the floor slab and the internal part of the advanced water-stop post-cast strip. The top of the steel casing pressure-reducing hole 41 is flush with the surface of the post-cast strip 6 of the floor slab and serves as the observation port and the overflow port.

[0038] During the construction stage of the concrete closure of the post-cast strip 6 of the floor slab, a PVC pipe with a diameter of 25 mm is used, and multiple holes with a diameter of 5 mm are drilled in the radial direction at a hole pitch of 200 mm to form a drainage blind pipe 45 with water filtering holes, facilitating the collection and drainage of the accumulated water around the drainage blind pipe 45 in the post-cast strip; a straight joint 43 with an internal thread of 25 mm×20 mm is connected to the DN20 mm threaded end of the galvanized steel pipe reserved on the side wall of the steel casing pressure relief hole 41, and then the drainage blind pipes 45 are connected in parallel using a tee joint 44 with a diameter of 25 mm. At the same time, the drainage blind pipes 45 are buried above the construction joint steel waterstop of the floor slab post-cast strip 6 (also known as the post-cast strip waterstop steel plate 7), and the drainage blind pipes 45 are fixed at the erection reinforcement of the construction joint steel waterstop using No. 18 iron wire to prevent the drainage blind pipes 45 from floating and shifting during the pouring of the post-cast strip concrete; finally, according to the actual situation on site, a section of PVC straight joint 43 with a diameter of 25 mm is used to connect the galvanized steel pipes arranged on both sides of the steel casing pressure relief hole 41 to the tee joint 44 to form a drainage system 4; the drainage blind pipes 45 are arranged longitudinally and densely along the floor slab post-cast strip 6, and are connected to the drain pipe 46 using a tee joint 44. The drain pipe 46 is preferably a galvanized steel pipe with a diameter of 50 mm. The drain pipe 46 is pre-buried during the construction stage of the foundation floor slab, and the drain pipe 46 is buried in the floor slab between the floor slab post-cast strip 6 and the sump 9 according to the principle of proximity. When the drain pipe 46 is buried, it is set with a downward slope from the floor slab post-cast strip 6 to the sump 9, and the slope is preferably 1%.

[0039] The installation process of the intelligent monitoring system 1 is as follows: The water level sensor 11 is set at the target water level of the steel casing pressure relief hole 41. The water level sensor 11 is wirelessly connected to the central data collector, and the central data collector is wirelessly connected to the central control cabinet 3 that controls the opening and closing of the control valve 14 for transmission; the valve 14 is buried in the straight joint 43, and the valve 14 is connected to the central control cabinet 3 through the AC contactor 13.

[0040] The operation process of the intelligent drainage system for the floor slab post-cast strip is as follows: Connect the power supply and start the intelligent monitoring system 1, and set the target water level H1; when the measured water level H is greater than the target water level H1, the water level sensor 11 transmits the signal to the central data collector, and the user issues an instruction through the central data collector. After receiving the instruction, the central control cabinet 3 feeds back a signal to the system end valve 14, and the valve 14 opens, discharging the groundwater through the straight joint 43, tee joint 44, drainage blind pipe 45 and drain pipe 46 of the drainage system to the sump 9; when the measured water level H is less than the target water level H1, the water level sensor 11 transmits the signal to the central data collector, and the user issues an instruction through the central data collector. After receiving the instruction, the central control cabinet 3 feeds back a signal to the system end valve 14, and the valve 14 closes.

[0041] After the construction of the top plate soil covering is completed and the phreatic water around the basement is lower than the basement floor, the inside of the steel casing pressure relief hole 41 is closed. When closing, ensure that there is no accumulated water in the steel casing pressure relief hole 41, remove the intelligent monitoring system 1, and at the same time use micro-expansion impermeable concrete with the same strength grade as the post-cast strip for closing. After the concrete construction is completed, cure for 14 days. Weld and close the top of the steel casing pressure relief hole 41 with a steel plate with a diameter of 160 mm and a thickness of 5 mm, and then carry out the basement floor decoration construction process at this part.

[0042] When the technical intermittent period of the post-cast strip is completed and the bottom plate post-cast strip 6 is closed before the top plate soil covering of the basement, the intelligent drainage system of the bottom plate post-cast strip of this embodiment is operated. If the phreatic water volume around the basement increases, the overflowing phreatic water can be discharged into the sump 9 through the intelligent drainage system of the bottom plate post-cast strip, reducing the adverse impact of the phreatic water buoyancy of the basement surrounding environment on the bottom plate structure, and correspondingly reducing the leakage hidden danger at the bottom plate post-cast strip 6; due to the closure of the basement bottom plate post-cast strip 6 and the reduction of the leakage hidden danger, the idle time of the working surface can be reduced, and the interspersed construction of the basement bottom plate concrete floor process can be organized in a timely manner, which is beneficial to construction organization; at the same time, the intelligent drainage system of the bottom plate post-cast strip provided by the present invention realizes the remote control of the dewatering equipment by the operator in a fixed place, reduces the labor intensity, and reduces the human error through the scientific accuracy of the data feedback by the monitoring equipment arranged on site.

[0043] The above is only the preferred implementation mode of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent drainage system for the post-cast strip of the floor slab, characterized in that, It includes a drainage system and an intelligent monitoring system; The drainage system includes: steel casing pressure relief holes, a drain pipe assembly, and a sump well; multiple steel casing pressure relief holes are longitudinally spaced along the bottom plate post-cast strip, and the bottom is buried to the cushion of the bottom plate post-cast strip; the drain pipe assembly is arranged on both sides of the bottom plate post-cast strip and connects the sump well and the steel casing pressure relief holes; The intelligent monitoring system includes a water level sensor, a central data acquisition and processing unit, a central control cabinet, and a valve; the valve is arranged in the drain pipe assembly; the water level sensor is arranged in the steel casing pressure relief hole; the central data acquisition and processing unit is connected to the water level sensor through a wireless transmission module to obtain the measured water level H in real time; the central control cabinet controls the opening and closing of the valve according to the target water level H1 set by the central data acquisition and processing unit and the obtained measured water level H to control the groundwater level in real time.

2. The intelligent drainage system for the post-cast strip of the floor slab according to claim 1, wherein, The drain pipe assembly includes a straight joint, a tee joint, a drainage blind pipe, and a drain pipe; the drainage blind pipe is longitudinally arranged along the bottom plate post-cast strip, one end of which is connected to the straight joint through the tee joint, and the other end is connected to the drain pipe through another tee joint; the drain pipe is connected to the sump well; the straight joint is connected to the side wall of the steel casing pressure relief hole.

3. The intelligent drainage system for the post-cast strip of the floor slab according to claim 2, wherein, The steel casing pressure relief hole is composed of a water-stop steel casing welded to two transverse steel pipes. Symmetric holes are reserved on the side wall of the water-stop steel casing for welding the transverse steel pipes, and the other end of the transverse steel pipe is connected to the straight joint.

4. The intelligent drainage system for the post-cast strip of the floor slab according to claim 3, characterized in that, A post-cast strip water-stop steel plate is arranged at the construction joint formed by the bottom plate post-cast strip and the bottom plates on both sides thereof; the drain pipe assembly and the transverse steel pipes are arranged above the post-cast strip water-stop steel plate; the drainage blind pipe is fixed to the steel bars arranged at the construction joint.

5. The intelligent drainage system for the post-cast strip of the floor slab according to claim 4, characterized in that, A steel casing water-stop ring is arranged on the side wall of the water-stop steel casing. The steel casing water-stop ring is located in the bottom plate post-cast strip and is arranged at a height lower than the post-cast strip water-stop steel plate.

6. The intelligent drainage system for the post-cast strip of the floor slab according to claim 3, wherein, A filter screen and non-woven fabric are installed at the bottom of the steel casing pressure relief hole, and the bottom of the steel casing pressure relief hole is inserted into the soil layer at the bottom of the cushion of the bottom plate post-cast strip.

7. An intelligent drainage system for the post-cast strip of the floor slab according to claim 3, characterized in that, Filter holes are provided on the side wall of the drainage blind pipe.

8. The intelligent drainage system for the post-cast strip of the floor slab according to claim 2, wherein The drain pipe is pre-buried between the bottom plate post-cast strip and the sump well, and the drain pipe is provided with a slope that slopes downward from the bottom plate post-cast strip to the sump well.

9. Construction method of intelligent drainage system for post-cast strip of floor slab, characterized in that, The drainage system adopts the intelligent drainage system for the bottom plate post-cast strip described in claim 1. The construction method includes the following steps: According to the designed width and height of the bottom plate post-cast strip, prefabricate multiple steel casing pressure relief holes, and arrange them longitudinally spaced along the bottom plate post-cast strip. The bottom of the steel casing pressure relief hole is buried to the soil layer at the bottom of the cushion of the bottom plate post-cast strip, and the top of the steel casing pressure relief hole is flush with the top of the bottom plate post-cast strip; During the concrete closing construction stage of the basement floor post-cast strip, according to the layout position of the steel casing pressure relief holes, prefabricate and install the drain pipe assembly; the drain pipe assembly includes a straight joint, a tee joint, a drainage blind pipe, and a drain pipe; bury the drainage blind pipe longitudinally along the basement floor post-cast strip above the steel plate water stop of the construction joint of the basement floor post-cast strip, and fix the drainage blind pipe to the steel bars arranged at the construction joint; connect one end of the drainage blind pipe to the straight joint through the tee joint, and the other end to the drain pipe through another tee joint; connect the drain pipe to the catch basin; connect the straight joint to the side wall of the steel casing pressure relief hole; Set the water level sensor at the target water level of the steel casing pressure relief hole, and complete the wireless connection of the water level sensor, the central data acquisition processor, the central control cabinet and the valve; The central control cabinet controls the opening and closing of the valve according to the target water level H1 set by the central data acquisition processor and the measured water level H obtained; 10. The construction method according to claim 9, characterized in that, It also includes the following steps: After the construction of the soil covering on the basement top slab is completed, when the surrounding groundwater of the basement is lower than the basement floor, seal the inside of the steel casing pressure relief hole, ensure that there is no accumulated water in the steel casing pressure relief hole during sealing, remove the intelligent monitoring system, and at the same time use micro-expansion impermeable concrete with the same strength grade as the basement floor post-cast strip for sealing. After the concrete curing is completed, seal the top of the steel casing pressure relief hole with a steel plate.

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