CN114232662B - Building site rain and sewage drainage method and system - Google Patents
Building site rain and sewage drainage method and system Download PDFInfo
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- CN114232662B CN114232662B CN202111320664.2A CN202111320664A CN114232662B CN 114232662 B CN114232662 B CN 114232662B CN 202111320664 A CN202111320664 A CN 202111320664A CN 114232662 B CN114232662 B CN 114232662B
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- 239000010865 sewage Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 640
- 238000001514 detection method Methods 0.000 claims abstract description 77
- 238000010276 construction Methods 0.000 claims abstract description 24
- 230000001133 acceleration Effects 0.000 claims description 31
- 230000009467 reduction Effects 0.000 claims description 24
- 238000005086 pumping Methods 0.000 claims description 18
- 238000011156 evaluation Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003673 groundwater Substances 0.000 claims description 3
- 239000002352 surface water Substances 0.000 claims description 3
- 239000002349 well water Substances 0.000 claims 2
- 235000020681 well water Nutrition 0.000 claims 2
- 238000009825 accumulation Methods 0.000 abstract description 15
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 10
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 10
- 238000009412 basement excavation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/08—Restraining of underground water by employing open ditches arranged below the level of the water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Hydrology & Water Resources (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
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- Control Of Non-Positive-Displacement Pumps (AREA)
- Sewage (AREA)
Abstract
The invention relates to a building site rain sewage drainage system which comprises a first ditch, a first water storage well, a second ditch, a second water storage well, a first water pump, a second water pump and a central control system, wherein a second water level detection device is arranged in the second water storage well, and a first water level detection device is arranged in the first water storage well. According to the invention, the second ditch and the second water storage well are arranged at the top of the foundation pit, so that ground rainwater is prevented from flowing into the foundation pit, the drainage pressure of the foundation pit is reduced, the drainage speed of accumulated water in the foundation pit is increased from the side face, meanwhile, the water level in the first reservoir is detected in real time, the timeliness of drainage is increased, the accumulation of rainwater is prevented, the construction progress is influenced, and furthermore, the central control system is arranged, the running speed of the water pump is intelligently regulated, the water pump speed is accelerated when the accumulated water is more, the drainage capacity is accelerated, and when the accumulated water is less, the water pump speed is not regulated, so that the energy is saved and the drainage is reduced.
Description
Technical Field
The invention relates to the technical field of construction drainage, in particular to a method and a system for draining rain and sewage on a construction site.
Background
The foundation pit is a soil pit excavated at a foundation design position according to the elevation of the substrate and the plane size of the foundation. Before excavation, the excavation scheme is determined according to geological hydrologic data and the conditions of buildings nearby the site, and waterproof and drainage works are performed. The method of releasing the slope can be used by the person with non-deep excavation to stabilize the soil slope, and the gradient of the soil slope is determined according to relevant construction regulations. The method can be used for protecting the wall of a foundation pit by a foundation pit wall supporting method and a concrete spraying wall protecting method, and even a large foundation pit adopts methods of underground continuous walls, column type bored piles and the like to be interlocked so as to protect the collapse of an outer soil layer; the underground water level can be reduced by using a well point method without influencing the nearby buildings, and slope-releasing open cut is adopted; natural cold air freezing method can be adopted for excavation in cold areas, etc.
Along with modern development, construction projects in various places in China are more and more in recent years, and some projects cannot be constructed in rainy seasons, however, the drainage process speed is low in the current construction process when raining, and the drainage requirement is not met.
Disclosure of Invention
Therefore, the invention provides a method and a system for draining rain and sewage on a building site, which are used for solving the problems that in the prior art, the drainage process speed is low in the raining process and the drainage requirement is not met.
In order to achieve the above object, the present invention provides a construction site rain sewage drainage system, comprising,
the first ditch is arranged at the bottom of the construction foundation pit and used for guiding the flow direction of accumulated water in the foundation pit;
the first water storage well is arranged at the bottom of the construction foundation pit and connected with the first ditch for storing accumulated water at the bottom of the foundation pit, and a first water level detection device is arranged in the first water storage well and can detect the water level in the first water storage well;
a second raceway arranged around the top of the foundation pit for preventing ground water from flowing into the foundation pit;
the second water storage well is connected with the second ditch and used for storing surface water, and a second water level detection device is arranged in the second water storage well and can detect the water level in the second water storage well;
the first water pump is arranged in the first water storage well and used for pumping water stored in the first water storage well, and the first water pump is connected with the second water storage well through a first water pumping pipeline;
the second water pump is arranged in the second water storage well and is used for pumping water stored in the second water storage well, the second water pump is connected with a second water pumping pipeline, and the second water pumping pipeline is used for discharging site accumulated water to the outside of a site;
the central control system is respectively connected with the first water level detection device, the second water level detection device, the first water pump and the second water pump and used for adjusting the working states of all the components, and the central control system judges whether to start the first water pump according to the internal water level condition of the first water storage well acquired by the first water level detection device; the first water level detection device periodically detects the water level condition in the first water storage well after the first water pump is started, the central control system judges whether to adjust the running speed of the first water pump according to the water level condition, the second water level detection device in the second water storage well detects the water level in the second water storage well in real time, the central control system judges whether to start the second water pump according to the water level, and the starting speed of the second water pump is determined by the running speed of the first water pump.
Further, a first water level detection parameter Az is arranged in the central control system, the first water level detection device detects the water level A1 in the first water storage well in real time and transmits the detection result to the central control system, the central control system compares the water level A1 in the first water storage well with the first water level detection parameter Az,
when A1 is less than or equal to Az, the central control system judges that accumulated water in the first water storage well is not required to be discharged;
when A1 is larger than Az, the central control system judges that accumulated water in the first water storage well needs to be discharged, the central control system controls the first water pump to start, and the initial starting speed of the first water pump is Vz.
Further, a first water pump starting detection period T1 is arranged in the central control system, when the first water pump starts to pump water to the first water storage well, the timing function of the central control system is started, when the time reaches T1, the first water level detection device detects the water level A1 'in the first water storage well, the central control system compares the water level A1' with the water level A1,
when A1' is more than or equal to A1, the central control system judges that the water level of the first water storage well is not reduced, the discharge speed of the first water storage well is insufficient, and the central control system increases the running speed of the first water pump;
when A1' < A1, the central control system judges that the water level of the first water storage well is reduced, and the central control system judges whether to adjust the operation speed of the first water pump according to the water level reduction speed.
Further, when the central control system adjusts the operation speed of the first water pump due to the fact that the water level is not lowered, the central control system adjusts the operation speed of the first water pump to Va, va=vz+vk× [ (A1' -A1) ×d1+1], wherein Vk is a basic value of acceleration of the first water pump when the water level is not lowered, and D1 is a calculated compensation parameter of the water level to the acceleration of the first water pump when the water level is not lowered.
Further, when the central control system determines that the water level of the first water storage well is reduced, the central control system calculates a water level reduction value delta A of the first water storage well, delta A=A1-A1', a first water level reduction evaluation parameter Ap of the water storage well is arranged in the central control system, the central control system compares the water level reduction value delta A of the first water storage well with the water level reduction evaluation parameter Ap of the first water storage well,
when delta A is smaller than Ap, the central control system judges that the water level descending speed of the first water storage well does not reach the standard, and the central control system increases the running speed of the first water pump;
when delta A is more than or equal to Ap, the central control system judges that the water level descending speed of the first water storage well reaches the standard, and the central control system does not adjust the running speed of the first water pump.
Further, when the running speed of the first water pump is adjusted due to the fact that the water level falling speed of the first water storage well does not reach the standard, the central control system adjusts the running speed of the first water pump to Vb, vb=vz+ (Ap- Δa) x C, wherein C is a calculated compensation parameter of the water level accelerating the first water pump when the water level falling speed of the first water storage well does not reach the standard.
Further, a first preset first water pump acceleration calculation compensation parameter value c1, a second preset first water pump acceleration calculation compensation parameter value c2, a third preset first water pump acceleration calculation compensation parameter value c3, a first preset water level drop value comparison parameter a1, a second preset water level drop value comparison parameter a2 are arranged in the central control system, when the running speed of the first water pump is regulated due to the fact that the water level drop speed of the first water storage well does not reach the standard, the central control system compares the first water level drop value delta A with the first preset water level drop value comparison parameter a1 and the second preset water level drop value comparison parameter a2,
when delta A is less than or equal to a1, the central control system selects a first preset calculated compensation parameter value C1 of the acceleration of the first water pump as a calculated compensation parameter C of the acceleration of the first water pump;
when a1 is more than delta A and less than or equal to a2, the central control system selects a calculated compensation parameter value C2 of the acceleration of a second preset first water pump as a calculated compensation parameter C of the acceleration of the first water pump;
when delta A is larger than a2, the central control system selects a third preset calculated compensation parameter value C3 of the first water pump acceleration as a calculated compensation parameter C of the first water pump acceleration.
Further, a second water level detection parameter Bz is arranged in the central control system, the second water level detection device detects the water level B1 in the second water storage well in real time and transmits the detection result to the central control system, the central control system compares the water level B1 in the second water storage well with the second water level detection parameter Bz,
when B1 is less than or equal to Bz, the central control system judges that accumulated water in the second water storage well is not required to be discharged;
when B1 is larger than Bz, the central control system judges that accumulated water in the second water storage well needs to be discharged, the central control system controls the second water pump to start, and the initial starting speed of the second water pump is Wz.
Further, the initial starting speed Wz of the second water pump is determined by the running speed of the first water pump, wz=wp+v/vz×q, where v=va or Vb, and Q is a calculated compensation parameter of the running speed of the first water pump to the running speed of the second water pump.
A construction site rain and sewage drainage method realized by the construction site rain and sewage drainage system comprises the following steps,
s1, constructing an infrastructure, cutting a first canal and a first water storage well at the bottom of a foundation pit, arranging a first water pump in the first water storage well, cutting a second canal and a second water storage well around the top of the foundation pit, arranging a second water pump in the second water storage well, connecting the second water storage well with the first water pump through a first water pumping pipeline, and arranging a water level detection device in each water storage well;
s2, a first water level detection device in the first water storage well detects the water level in the first water storage well in real time, and whether the first water pump is started or not is judged according to the water level;
s3, periodically detecting the water level condition in the first water storage well after the first water pump is started, and judging whether to adjust the running speed of the first water pump according to the water level condition;
s4, a second water level detection device in the second water storage well detects the water level in the second water storage well in real time, whether the second water pump is started or not is judged according to the water level, and the starting speed of the second water pump is determined by the running speed of the first water pump.
Compared with the prior art, the water level control system has the beneficial effects that the central control system judges whether to start the first water pump according to the water level condition in the first water storage well acquired by the first water level detection device; the first water level detection device periodically detects the water level condition in the first water storage well after the first water pump is started, the central control system judges whether to adjust the running speed of the first water pump according to the water level condition, the second water level detection device in the second water storage well detects the water level in the second water storage well in real time, the central control system judges whether to start the second water pump according to the water level, and the starting speed of the second water pump is determined by the running speed of the first water pump. Set up second ditch and second water storage well at the foundation ditch top, prevent that ground rainwater from flowing into the foundation ditch, reduced the drainage pressure of foundation ditch, thereby the drainage rate of ponding in the foundation ditch has been increased from the side, simultaneously, through the inside water level of first cistern of real-time detection, the timeliness of having increased the drainage, prevent that the rainwater from accumulating, influence the construction progress, and further, through setting up well accuse system, intelligent regulation water pump's running speed, accelerate water pump speed when ponding is many, accelerate the drainage capacity, when ponding is few, do not adjust water pump speed, energy saving and emission reduction.
Further, a first water level detection parameter Az is arranged in the central control system, the first water level detection device detects the water level A1 in the first water storage well in real time, the detection result is transmitted to the central control system, the central control system compares the water level A1 in the first water storage well with the first water level detection parameter Az, and the timeliness of water accumulation and discharge in the foundation pit is ensured through detecting the water level height in real time, so that rainwater accumulation is prevented.
Further, be provided with first water pump start-up detection period T1 in the well accuse system, work as first water pump start-up is right when first water storage well draws water, well accuse system timing function opens, when time reaches T1, first water level detection device detects first water storage well inside water level A1', well accuse system compares A1' with A1, through judging the water level change condition, judges whether water pump operating speed is up to standard, further ensures the timeliness of foundation ditch inner water drainage, prevents the rainwater and stores up.
Further, when the central control system judges that the water level of the first water storage well is reduced, the central control system calculates a water level reduction value delta A of the first water storage well, delta A=A1-A1', a water level reduction evaluation parameter Ap of the first water storage well is arranged in the central control system, the central control system compares the water level reduction value delta A of the first water storage well with the water level reduction evaluation parameter Ap of the first water storage well, when the water level reduction amplitude does not reach the standard, the running speed of the water pump is increased, the timeliness of drainage of accumulated water in a foundation pit is further ensured, and rainwater accumulation is prevented.
Further, a first preset first water pump acceleration calculation compensation parameter value c1, a second preset first water pump acceleration calculation compensation parameter value c2, a third preset first water pump acceleration calculation compensation parameter value c3, a first preset water level drop value comparison parameter a1, a second preset water level drop value comparison parameter a2 are arranged in the central control system, when the running speed of the first water pump is regulated due to the fact that the water level drop speed of the first water storage well does not reach the standard, the central control system compares the first water level drop value delta A with the first preset water level drop value comparison parameter a1, the second preset water level drop value comparison parameter a2, and corresponding first water pump acceleration calculation compensation parameter values are selected for different water level difference values, so that the water pump speed is accurately regulated, and energy conservation and emission reduction are achieved on the premise that emission requirements are met.
Further, a second water level detection parameter Bz is arranged in the central control system, the second water level detection device detects the water level B1 in the second water storage well in real time, the detection result is transmitted to the central control system, the central control system compares the water level B1 in the second water storage well with the second water level detection parameter Bz, and the timeliness of water accumulation and discharge in the foundation pit is ensured by detecting the water level height in real time, so that rainwater accumulation is prevented.
Further, the initial starting speed Wz of the second water pump is determined by the running speed of the first water pump, the running speed of the second water pump is determined according to the running speed of the first water pump, the water in the second water storage well is guaranteed to be discharged, rainwater accumulation is prevented, and the rainwater backflow risk is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a building site rain and sewage drainage system according to the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to the illustration of figure 1 of the drawings,
the invention provides a rain and sewage drainage system for a construction site, which comprises,
the first ditch 1 is arranged at the bottom of the construction foundation pit 2 and is used for guiding the flow direction of accumulated water in the foundation pit 2;
the first water storage well 3 is arranged at the bottom of the construction foundation pit 2 and is connected with the first ditch 1, so as to store accumulated water at the bottom of the foundation pit 2, a first water level detection device 4 is arranged in the first water storage well 3, and the first water level detection device 4 can detect the water level in the first water storage well 3;
a second canal 5 provided around the top of the foundation pit 2 for preventing ground water from flowing into the foundation pit 2;
the second water storage well 6 is connected with the second ditch 5 and is used for storing surface water, a second water level detection device 7 is arranged in the second water storage well 6, and the second water level detection device 7 can detect the water level in the second water storage well 6;
a first water pump 8, which is arranged in the first water storage well 3 and is used for pumping water stored in the first water storage well, and the first water pump 8 is connected with the second water storage well 6 through a first water pumping pipeline 9;
the second water pump 10 is arranged in the second water storage well 6 and is used for pumping water stored in the second water storage well, the second water pump 10 is connected with a second water pumping pipeline 11, and the second water pumping pipeline is used for discharging the building site water to the outside of the building site;
the central control system is respectively connected with the first water level detection device 4, the second water level detection device 7, the first water pump 8 and the second water pump 10 and is used for adjusting the working states of all the components, and the central control system judges whether to start the first water pump 8 according to the water level condition in the first water storage well 3 acquired by the first water level detection device 4; after the first water pump 8 is started, the first water level detection device 4 periodically detects the water level condition in the first water storage well 3, the central control system judges whether to adjust the running speed of the first water pump 8 according to the water level condition, the second water level detection device 7 in the second water storage well 6 detects the water level in the second water storage well 6 in real time, the central control system judges whether to start the second water pump 10 according to the water level, and the starting speed of the second water pump 10 is determined by the running speed of the first water pump 8.
Set up second ditch 5 and second water storage well 6 at foundation ditch 2 top, prevent that ground rainwater from flowing into foundation ditch 2, reduced the drainage pressure of foundation ditch 2, thereby the drainage rate of ponding in the foundation ditch 2 has been increased from the side, simultaneously, through the inside water level of real-time detection first cistern, the timeliness of having increased the drainage, prevent that the rainwater from accumulating, influence the construction progress, further, through setting up the central control system, intelligent regulation water pump's operating speed, accelerate the water pump speed when ponding is many, accelerate the drainage capacity, when ponding is few, do not adjust the water pump speed, energy saving and emission reduction.
Specifically, a first water level detection parameter Az is arranged in the central control system, the first water level detection device 4 detects the water level A1 in the first water storage well 3 in real time, the detection result is transmitted to the central control system, the central control system compares the water level A1 in the first water storage well 3 with the first water level detection parameter Az,
when A1 is less than or equal to Az, the central control system judges that accumulated water in the first water storage well 3 does not need to be discharged;
when A1 is larger than Az, the central control system judges that accumulated water in the first water storage well 3 needs to be discharged, the central control system controls the first water pump 8 to start, and the initial starting speed of the first water pump 8 is Vz.
By detecting the water level in real time, the timeliness of water accumulation and discharge in the foundation pit 2 is ensured, and rainwater accumulation is prevented.
Specifically, a first water pump 8 is arranged in the central control system to start a detection period T1, when the first water pump 8 starts to pump water to the first water storage well 3, the timing function of the central control system is started, when the time reaches T1, the first water level detection device 4 detects the water level A1 'in the first water storage well 3, the central control system compares A1' with A1,
when A1' is more than or equal to A1, the central control system judges that the water level of the first water storage well 3 is not reduced, the discharge speed of the first water storage well 3 is insufficient, and the central control system increases the running speed of the first water pump 8;
when A1' < A1, the central control system judges that the water level of the first water storage well 3 is reduced, and the central control system judges whether to adjust the running speed of the first water pump 8 according to the water level reduction speed.
By judging the water level change condition, whether the running speed of the water pump reaches the standard is judged, the timeliness of water accumulation and discharge in the foundation pit 2 is further ensured, and rainwater accumulation is prevented.
Specifically, when the central control system adjusts the operation speed of the first water pump 8 due to the fact that the water level is not lowered, the central control system adjusts the operation speed of the first water pump 8 to Va, va=vz+vk× [ (A1' -A1) ×d1+1], wherein Vk is an acceleration basic value of the first water pump 8 when the water level is not lowered, and D1 is a calculated compensation parameter of the acceleration of the first water pump 8 by the water level when the water level is not lowered.
Specifically, when the central control system determines that the water level of the first water storage well 3 is reduced, the central control system calculates a water level reduction value delta A of the first water storage well 3, delta A=A1-A1', a first water level reduction evaluation parameter Ap of the water storage well 3 is arranged in the central control system, the central control system compares the water level reduction value delta A of the first water storage well 3 with the first water level reduction evaluation parameter Ap of the water storage well 3,
when delta A is smaller than Ap, the central control system judges that the water level descending speed of the first water storage well 3 does not reach the standard, and the central control system increases the running speed of the first water pump 8;
when delta A is more than or equal to Ap, the central control system judges that the water level descending speed of the first water storage well 3 reaches the standard, and the central control system does not adjust the running speed of the first water pump 8.
When the water level drop amplitude does not reach the standard, the running speed of the water pump is increased, the timeliness of water accumulation and discharge in the foundation pit 2 is further ensured, and rainwater accumulation is prevented.
Specifically, when the operation speed of the first water pump 8 is adjusted due to the fact that the water level falling speed of the first water storage well 3 does not reach the standard, the central control system adjusts the operation speed of the first water pump 8 to Vb, vb=vz+ (Ap- Δa) ×c, wherein C is a calculated compensation parameter for accelerating the first water pump 8 by the water level when the water level falling speed of the first water storage well 3 does not reach the standard.
Specifically, a first preset first water pump 8 accelerated calculation compensation parameter value c1, a second preset first water pump 8 accelerated calculation compensation parameter value c2, a third preset first water pump 8 accelerated calculation compensation parameter value c3, a first preset water level drop value comparison parameter a1, a second preset water level drop value comparison parameter a2 are arranged in the central control system, when the water level drop speed of the first water storage well 3 is determined to be not up to standard, the central control system compares the water level drop value delta A of the first water storage well 3 with the first preset water level drop value comparison parameter a1 and the second preset water level drop value comparison parameter a2,
when delta A is less than or equal to a1, the central control system selects a calculated compensation parameter value C1 accelerated by a first preset first water pump 8 as a calculated compensation parameter C accelerated by the first water pump 8;
when a1 is more than delta A and less than or equal to a2, the central control system selects a calculated compensation parameter value C2 accelerated by a second preset first water pump 8 as a calculated compensation parameter C accelerated by the first water pump 8;
when Δa > a2, the central control system selects a third preset calculated compensation parameter value C3 for acceleration of the first water pump 8 as the calculated compensation parameter C for acceleration of the first water pump 8.
For different water level difference values, corresponding calculated compensation parameter values for acceleration of the first water pump 8 are selected, and the water pump speed is accurately regulated, so that energy conservation and emission reduction are realized on the premise of meeting emission requirements.
Specifically, a second water level detection parameter Bz is set in the central control system, the second water level detection device 7 detects the water level B1 in the second water storage well 6 in real time, and transmits the detection result to the central control system, the central control system compares the water level B1 in the second water storage well 6 with the second water level detection parameter Bz,
when B1 is less than or equal to Bz, the central control system judges that accumulated water in the second water storage well 6 does not need to be discharged;
when B1 is larger than Bz, the central control system judges that accumulated water in the second water storage well 6 needs to be discharged, the central control system controls the second water pump 10 to start, and the initial starting speed of the second water pump 10 is Wz.
By detecting the water level in real time, the timeliness of water accumulation and discharge in the foundation pit 2 is ensured, and rainwater accumulation is prevented.
Specifically, the initial start-up speed Wz of the second water pump 10 is determined by the operation speed of the first water pump 8, wz=wp+v/vz×q, where v=va or Vb, Q is a calculated compensation parameter of the operation speed of the first water pump 8 to the operation speed of the second water pump 10.
The running speed of the second water pump 10 is determined according to the running speed of the first water pump 8, so that the water in the second water storage well 6 is discharged, rainwater is prevented from accumulating, and the risk of rainwater backflow is reduced.
A construction site rain and sewage drainage method realized by the construction site rain and sewage drainage system comprises the following steps,
s1, constructing an infrastructure, cutting a first canal and a first water storage well at the bottom of a foundation pit, arranging a first water pump in the first water storage well, cutting a second canal and a second water storage well around the top of the foundation pit, arranging a second water pump in the second water storage well, connecting the second water storage well with the first water pump through a first water pumping pipeline, and arranging a water level detection device in each water storage well;
s2, a first water level detection device in the first water storage well detects the water level in the first water storage well in real time, and whether the first water pump is started or not is judged according to the water level;
s3, periodically detecting the water level condition in the first water storage well after the first water pump is started, and judging whether to adjust the running speed of the first water pump according to the water level condition;
s4, a second water level detection device in the second water storage well detects the water level in the second water storage well in real time, whether the second water pump is started or not is judged according to the water level, and the starting speed of the second water pump is determined by the running speed of the first water pump.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
Claims (5)
1. A building site rain and sewage drainage system is characterized by comprising,
the first ditch is arranged at the bottom of the construction foundation pit and used for guiding the flow direction of accumulated water in the foundation pit;
the first water storage well is arranged at the bottom of the construction foundation pit and connected with the first ditch for storing accumulated water at the bottom of the foundation pit, and a first water level detection device is arranged in the first water storage well and can detect the water level in the first water storage well;
a second raceway arranged around the top of the foundation pit for preventing ground water from flowing into the foundation pit;
the second water storage well is connected with the second ditch and used for storing surface water, and a second water level detection device is arranged in the second water storage well and can detect the water level in the second water storage well;
the first water pump is arranged in the first water storage well and used for pumping water stored in the first water storage well, and the first water pump is connected with the second water storage well through a first water pumping pipeline;
the second water pump is arranged in the second water storage well and is used for pumping water stored in the second water storage well, the second water pump is connected with a second water pumping pipeline, and the second water pumping pipeline is used for discharging site accumulated water to the outside of a site;
the central control system is respectively connected with the first water level detection device, the second water level detection device, the first water pump and the second water pump and used for adjusting the working states of all the components, and the central control system judges whether to start the first water pump according to the internal water level condition of the first water storage well acquired by the first water level detection device; after the first water pump is started, the first water level detection device periodically detects the water level condition in the first water storage well, the central control system judges whether to adjust the running speed of the first water pump according to the water level condition, the second water level detection device in the second water storage well detects the water level in the second water storage well in real time, the central control system judges whether to start the second water pump according to the water level, and the starting speed of the second water pump is determined by the running speed of the first water pump;
the central control system is internally provided with a first water level detection parameter Az, the first water level detection device detects the water level A1 in the first water storage well in real time and transmits the detection result to the central control system, the central control system compares the water level A1 in the first water storage well with the first water level detection parameter Az,
when A1 is less than or equal to Az, the central control system judges that accumulated water in the first water storage well is not required to be discharged;
when A1 is larger than Az, the central control system judges that accumulated water in the first water storage well needs to be discharged, the central control system controls the first water pump to start, and the initial starting speed of the first water pump is Vz;
a first water pump starting detection period T1 is arranged in the central control system, when the first water pump starts to pump water to the first water storage well, the timing function of the central control system is started, when the time reaches T1, the first water level detection device detects the water level A1 'in the first water storage well, the central control system compares the water level A1' with the water level A1,
when A1' is more than or equal to A1, the central control system judges that the water level of the first water storage well is not reduced, the discharge speed of the first water storage well is insufficient, and the central control system increases the running speed of the first water pump;
when A1' < A1, the central control system judges that the water level of the first water storage well is reduced, and the central control system judges whether to adjust the running speed of the first water pump according to the water level reduction speed;
when the central control system adjusts the running speed of the first water pump because the water level does not drop, the central control system adjusts the running speed of the first water pump to Va, va=vz+vk× [ (A1' -A1) ×d1+1], wherein Vk is a first water pump acceleration basic value when the water level does not drop, and D1 is a calculated compensation parameter of the water level to accelerate the first water pump when the water level does not drop;
when the central control system judges that the water level of the first water storage well is reduced, the central control system calculates a water level reduction value delta A of the first water storage well, delta A=A1-A1', a first water level reduction evaluation parameter Ap of the water storage well is arranged in the central control system, the central control system compares the water level reduction value delta A of the first water storage well with the water level reduction evaluation parameter Ap of the first water storage well,
when delta A is smaller than Ap, the central control system judges that the water level descending speed of the first water storage well does not reach the standard, and the central control system increases the running speed of the first water pump;
when delta A is more than or equal to Ap, the central control system judges that the water level descending speed of the first water storage well reaches the standard, and the central control system does not adjust the running speed of the first water pump.
2. The construction site rain and sewage drainage system according to claim 1, wherein when the operation speed of the first water pump is adjusted by determining that the water level falling speed of the first water storage well does not reach the standard, the central control system adjusts the operation speed of the first water pump to Vb, vb=vz+ (Ap- Δa) ×c, wherein C is a calculated compensation parameter for acceleration of the first water pump by the water level when the water level falling speed of the first water storage well does not reach the standard.
3. The system according to claim 2, wherein a first preset first pump acceleration calculation compensation parameter value c1, a second preset first pump acceleration calculation compensation parameter value c2, a third preset first pump acceleration calculation compensation parameter value c3, a first preset water level drop value comparison parameter a1, a second preset water level drop value comparison parameter a2 are provided in the central control system, and when it is determined that the first water storage well water level drop speed does not reach the standard, the central control system compares the first water storage well water level drop value Δa with the first preset water level drop value comparison parameter a1 and the second preset water level drop value comparison parameter a2,
when delta A is less than or equal to a1, the central control system selects a first preset calculated compensation parameter value C1 of the acceleration of the first water pump as a calculated compensation parameter C of the acceleration of the first water pump;
when a1 is more than delta A and less than or equal to a2, the central control system selects a calculated compensation parameter value C2 of the acceleration of a second preset first water pump as a calculated compensation parameter C of the acceleration of the first water pump;
when delta A is larger than a2, the central control system selects a third preset calculated compensation parameter value C3 of the first water pump acceleration as a calculated compensation parameter C of the first water pump acceleration.
4. The system for draining rain and sewage on a construction site according to claim 3, wherein a second water level detection parameter Bz is arranged in the central control system, the second water level detection device detects the water level B1 in the second water storage well in real time and transmits the detection result to the central control system, the central control system compares the water level B1 in the second water storage well with the second water level detection parameter Bz,
when B1 is less than or equal to Bz, the central control system judges that accumulated water in the second water storage well is not required to be discharged;
when B1 is larger than Bz, the central control system judges that accumulated water in the second water storage well needs to be discharged, the central control system controls the second water pump to start, and the initial starting speed of the second water pump is Wz.
5. A construction site rain and sewage drainage method realized by the construction site rain and sewage drainage system as claimed in claim 1, which is characterized by comprising the following steps of,
s1, constructing an infrastructure, cutting a first canal and a first water storage well at the bottom of a foundation pit, arranging a first water pump in the first water storage well, cutting a second canal and a second water storage well around the top of the foundation pit, arranging a second water pump in the second water storage well, connecting the second water storage well with the first water pump through a first water pumping pipeline, and arranging a water level detection device in each water storage well;
s2, a first water level detection device in the first water storage well detects the water level in the first water storage well in real time, and whether the first water pump is started or not is judged according to the water level;
s3, periodically detecting the water level condition in the first water storage well after the first water pump is started, and judging whether to adjust the running speed of the first water pump according to the water level condition;
s4, a second water level detection device in the second water storage well detects the water level in the second water storage well in real time, whether the second water pump is started or not is judged according to the water level, and the starting speed of the second water pump is determined by the running speed of the first water pump.
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