CN114232662A - Building site rain sewage drainage method and system - Google Patents
Building site rain sewage drainage method and system Download PDFInfo
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- CN114232662A CN114232662A CN202111320664.2A CN202111320664A CN114232662A CN 114232662 A CN114232662 A CN 114232662A CN 202111320664 A CN202111320664 A CN 202111320664A CN 114232662 A CN114232662 A CN 114232662A
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- 239000010865 sewage Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 625
- 238000001514 detection method Methods 0.000 claims abstract description 78
- 238000010276 construction Methods 0.000 claims abstract description 40
- 230000001133 acceleration Effects 0.000 claims description 33
- 238000005086 pumping Methods 0.000 claims description 21
- 235000020681 well water Nutrition 0.000 claims description 20
- 239000002349 well water Substances 0.000 claims description 20
- 238000011156 evaluation Methods 0.000 claims description 8
- 238000009825 accumulation Methods 0.000 abstract description 4
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 7
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 7
- 238000011897 real-time detection Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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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
Abstract
The invention relates to a rain and sewage drainage system for a construction site, which comprises a first water channel, a first water storage well, a second water channel, 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 water channel and the second water storage well are arranged at the top of the foundation pit, so that rainwater on the ground is prevented from flowing into the foundation pit, and the drainage pressure of the foundation pit is reduced, thereby increasing the drainage speed of the accumulated water in the foundation pit from the side surface, meanwhile, the timeliness of drainage is increased by detecting the water level in the first water storage pool in real time, rainwater accumulation is prevented, the construction progress is prevented from being influenced, furthermore, the running speed of the water pump is intelligently adjusted by arranging the central control system, the water pump speed is increased when the accumulated water is much, the drainage capacity is increased, and the water pump speed is not adjusted when the accumulated water is little, so that the energy is saved, and the emission is reduced.
Description
Technical Field
The invention relates to the technical field of construction drainage, in particular to a rain and sewage drainage method and system for a building site.
Background
The foundation pit is a soil pit excavated at the design position of the foundation according to the elevation of the foundation and the plane size of the foundation. Before excavation, an excavation scheme is determined according to geological and hydrological data and the conditions of buildings nearby the site, and waterproof drainage work is performed. The person who is not excavated can use the method of putting the side slope to stabilize the earth slope, and the size of the slope is determined according to the relevant construction regulations. When a deeper foundation pit and a building adjacent to the deeper foundation pit are excavated, a foundation pit wall supporting method, a concrete-sprayed wall protecting method and a large foundation pit are used, and even an underground continuous wall and a columnar column type bored pile are used for interlocking, so that an outer soil layer is prevented from collapsing; for those who have no influence on nearby buildings, the underground water level can be reduced by a well point method, and slope releasing open cut is adopted; in cold regions, natural cold freezing method can be adopted for excavation and the like.
With the modern development, construction projects in various parts of China are more and more in recent years, and some projects can not avoid construction in rainy seasons, however, the drainage process rate is low when raining in the current construction process, and the drainage requirement is not met.
Disclosure of Invention
Therefore, the invention provides a rain and sewage drainage method and system for a construction site, which are used for solving the problems that the drainage process speed is low and the drainage requirement is not met when rain falls in the construction process in the prior art.
In order to achieve the above objects, the present invention provides a rain sewage drainage system for a construction site, 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, is connected with the first ditch and is used for storing accumulated water at the bottom of the foundation pit, and is internally provided with a first water level detection device which can detect the water level in the first water storage well;
the second ditch is arranged around the top of the foundation pit and used for preventing accumulated water on the ground from flowing into the foundation pit;
the second water storage well is connected with the first water channel and used for storing surface accumulated 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 pumping 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 used for pumping water stored in the second water pumping well, the second water pump is connected with a second water pumping pipeline, and the second water pumping pipeline discharges accumulated water on the construction site to the outside of the construction site;
the central control system is connected with the first water level detection device, the second water level detection device, the first water pump and the second water pump respectively and used for adjusting the working states of all the parts, and 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; 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.
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 not more than Az, the central control system judges that the accumulated water in the first water storage well 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 needs to be discharged, the central control system controls the first water pump to be started, 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 is started 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 A1' with A1,
when A1' is not less than or equal to A1, the central control system judges that the water level of the first water storage well is not reduced and the drainage 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 determines that the water level of the first water storage well descends, and determines whether to adjust the running speed of the first water pump according to the descending speed of the water level.
Further, when the central control system adjusts the operation speed of the first water pump because the water level does not drop, the central control system adjusts the operation speed of the first water pump to Va, wherein Va is Vz + Vk x [ (A1' -A1) × D1+1], where Vk is a base value for accelerating the first water pump when the water level does not drop, and D1 is a calculation compensation parameter for accelerating the first water pump by the water level when the water level does not drop.
Further, when the central control system determines that the water level of the first water storage well is lowered, the central control module calculates a first water storage well water level lowering value delta A, wherein the delta A is A1-A1', a first water storage well water level lowering evaluation parameter Ap is arranged in the central control system, the central control system compares the first water storage well water level lowering value delta A with the first water storage well water level lowering evaluation parameter Ap,
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 the delta A is larger 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 falling speed of the water level 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, wherein Vb is Vz + (Ap-delta A) x C, and C is a calculation compensation parameter of the water level for accelerating the first water pump when the falling speed of the water level 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 and 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 adjusted due to the fact that the first water well water level drop speed does not reach the standard, the central control system compares the first water well 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 the delta A is not more than a1, the central control system selects a first preset calculation compensation parameter value C1 of the first water pump acceleration as a calculation compensation parameter C of the first water pump acceleration;
when delta A is more than a1 and less than or equal to a2, the central control system selects a second preset calculation compensation parameter value C2 of the first water pump acceleration as a calculation compensation parameter C of the first water pump acceleration;
and when the delta A is larger than a2, the central control system selects a third preset calculation compensation parameter value C3 of the first water pump acceleration as a calculation 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 inside 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 inside the second water storage well with the second water level detection parameter Bz,
when B1 is not more than Bz, the central control system judges that the accumulated water in the second water storage well 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 needs to be discharged, the central control system controls the second water pump to be started, and the initial starting speed of the second water pump is Wz.
Further, the second water pump initial start speed Wz is determined by the operating speed of the first water pump, Wz is Wp + V/Vz × Q, where V is Va or Vb, and Q is a calculated compensation parameter of the operating speed of the first water pump to the operating speed of the second water pump.
A construction site rain sewage drainage method realized by applying the construction site rain sewage drainage system comprises the following steps,
s1, constructing an infrastructure, excavating a first ditch and a first water storage well at the bottom of the foundation pit, arranging a first water pump in the first water storage well, excavating a second ditch 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 and the first water pump through the first ditch, and arranging a water level detection device in each water storage well;
s2, detecting the water level in the first water storage well in real time by a first water level detection device in the first water storage well, and judging whether to start the first water pump 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;
and S4, detecting the water level in the second water storage well in real time by a second water level detection device in the second water storage well, judging whether to start the second water pump according to the water level, wherein 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 detection system has the advantages that the central control system judges whether to start the first water pump or not according to the water level condition inside the first water storage well, which is 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. Set up second ditch and second water storage well at the foundation ditch top, prevent that ground rainwater from flowing into the foundation ditch, the drainage pressure of foundation ditch has been reduced, thereby the discharge velocity of ponding in the foundation ditch has been increaseed to the edgewise, and simultaneously, through the inside water level of the first cistern of real-time detection, the promptness of drainage has been increased, prevent that the rainwater from depositing, influence the construction progress, and furthermore, through setting up central control system, the functioning speed of intelligent regulation water pump, accelerate the water pump speed when ponding is many, accelerate the discharge capacity, when ponding is few, adjust water pump speed, energy saving and emission reduction.
Furthermore, 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 inside the first water storage well in real time and transmits a detection result to the central control system, the central control system compares the water level A1 inside the first water storage well with the first water level detection parameter Az, and the timeliness of accumulated water discharge in the foundation pit is ensured by detecting the height of the water level in real time to prevent rainwater from accumulating.
Furthermore, a first water pump starting detection period T1 is arranged in the central control system, when the first water pump is started to pump water into 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 'inside the first water storage well, the central control system compares A1' with A1, and by judging the change condition of the water level, whether the running speed of the water pump reaches the standard or not is judged, so that the timeliness of the drainage of accumulated water in the foundation pit is further ensured, and rainwater accumulation is prevented.
Further, when the central control system determines that the water level of the first water storage well descends, the central control module calculates a first water storage well water level descending value delta A, wherein the delta A is A1-A1', a first water storage well water level descending evaluation parameter Ap is arranged in the central control system, the central control system compares the first water storage well water level descending value delta A with the first water storage well water level descending evaluation parameter Ap, and when the water level descending amplitude does not reach the standard, the running speed of the water pump is increased, the timeliness of water discharge in the foundation pit is further ensured, and rainwater accumulation is prevented.
Furthermore, 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 and 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 adjusted due to the fact that the first water well water level drop speed does not reach the standard, the central control system compares the first water well 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, corresponding first water pump acceleration calculation compensation parameter values are selected for different water level difference values, the water pump speed is accurately adjusted, and energy conservation and emission reduction are achieved on the premise that emission requirements are met.
Furthermore, 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 inside the second water storage well in real time and transmits a detection result to the central control system, the central control system compares the water level B1 inside the second water storage well with the second water level detection parameter Bz, and the drainage timeliness of accumulated water in the foundation pit is ensured by detecting the height of the water level in real time to prevent rainwater from accumulating.
Furthermore, 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 is prevented from being accumulated, and the risk of rainwater backflow is reduced.
Drawings
FIG. 1 is a schematic representation of the present invention. Schematic structural diagram of (a);
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit 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 only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, 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 otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in 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 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, is connected with the first ditch 1 and is used for storing accumulated water at the bottom of the foundation pit 2, and 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 ditch 5 arranged around the top of the foundation pit 2 to prevent surface water from flowing into the foundation pit 2;
the second water storage well 6 is connected with the first ditch 1 and used for storing surface accumulated 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;
the first water pump 8 is arranged in the first water storage well 3 and used for pumping water stored in the first water pumping 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 used for pumping water stored in the second water pumping well, the second water pump 10 is connected with a second water pumping pipeline 11, and the second water pumping pipeline discharges accumulated water on the construction site to the outside of the construction 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 parts, 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 2 tops in foundation ditch, prevent that ground rainwater from flowing into foundation ditch 2, the drainage pressure of foundation ditch 2 has been reduced, thereby the discharge velocity of ponding in foundation ditch 2 has been increaseed to the edgewise, and simultaneously, through the inside water level of the first cistern of real-time detection, the promptness of drainage has been increased, prevent that the rainwater from depositing, influence the construction progress, furthermore, through setting up central control system, the functioning speed of intelligent regulation water pump, accelerate water pump speed when ponding is many, accelerate discharge capacity, when ponding is few, adjust water pump speed, energy saving and emission reduction.
Specifically, a first water level detection parameter Az is provided in the central control system, the first water level detection device 4 detects the water level a1 inside the first water storage well 3 in real time and transmits the detection result to the central control system, the central control system compares the water level a1 inside the first water storage well 3 with the first water level detection parameter Az,
when A1 is not more than Az, the central control system judges that the 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 the accumulated water in the first water storage well 3 needs to be discharged, the central control system controls the first water pump 8 to be started, and the initial starting speed of the first water pump 8 is Vz.
Through real-time detection water level height, ensure the promptness that ponding discharged in foundation ditch 2, prevent that the rainwater from storing up.
Specifically, a first water pump 8 starting detection period T1 is arranged in the central control system, when the first water pump 8 is started to pump water into 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 and 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 lowered, and judges whether to adjust the running speed of the first water pump 8 or not according to the lowering speed of the water level.
Through judging the water level change condition, judge whether water pump functioning speed reaches standard, further ensure the promptness that ponding discharged in foundation ditch 2, prevent that the rainwater from accumulating up.
Specifically, when the central control system adjusts the operation speed of the first water pump 8 because the water level does not drop, the central control system adjusts the operation speed of the first water pump 8 to Va, where Va is Vz + Vk × [ (a 1' -a1) × D1+1], where Vk is a base acceleration value of the first water pump 8 when the water level does not drop, and D1 is a calculation compensation parameter of the water level to the acceleration of the first water pump 8 when the water level does not drop.
Specifically, when the central control system determines that the water level of the first water storage well 3 drops, the central control module calculates a first water storage well 3 water level drop value Δ a, which is a value a1-a 1', and a first water storage well 3 water level drop evaluation parameter Ap is arranged in the central control system, and the central control system compares the first water storage well 3 water level drop value Δ a with the first water storage well 3 water level drop evaluation parameter Ap,
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;
and when the delta A is larger 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 does not adjust the running speed of the first water pump 8.
When the water level descending amplitude does not reach the standard, the running speed of the water pump is increased, the timeliness of accumulated water 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 falling speed of the water level 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, wherein Vb is Vz + (Ap- Δ A) x C, and C is a calculation compensation parameter of the water level for accelerating the first water pump 8 when the falling speed of the water level of the first water storage well 3 does not reach the standard.
Specifically, a calculation compensation parameter value c1 for accelerating a first preset first water pump 8, a calculation compensation parameter value c2 for accelerating a second preset first water pump 8, a calculation compensation parameter value c3 for accelerating a third preset first water pump 8, 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 8 is adjusted due to the fact that the water level drop speed of the first water storage well 3 does not reach the 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 the delta A is not more than a1, the central control system selects a first preset calculation compensation parameter value C1 of the first water pump 8 for acceleration as a calculation compensation parameter C of the first water pump 8 for acceleration;
when delta A is more than a1 and less than or equal to a2, the central control system selects a second preset calculation compensation parameter value C2 for the acceleration of the first water pump 8 as a calculation compensation parameter C for the acceleration of the first water pump 8;
and when the delta A is larger than a2, the central control system selects a third preset calculation compensation parameter value C3 for the acceleration of the first water pump 8 as a calculation compensation parameter C for the acceleration of the first water pump 8.
And selecting corresponding calculation compensation parameter values accelerated by the first water pump 8 for different water level difference values, and accurately adjusting the speed of the water pump, so that the energy is saved and the emission is reduced on the premise of meeting the emission requirement.
Specifically, a second water level detection parameter Bz is arranged 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 not more than Bz, the central control system judges that the 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 the accumulated water in the second water storage well 6 needs to be discharged, the central control system controls the second water pump 10 to be started, and the initial starting speed of the second water pump 10 is Wz.
Through real-time detection water level height, ensure the promptness that ponding discharged in foundation ditch 2, prevent that the rainwater from storing up.
Specifically, the initial starting speed Wz of the second water pump 10 is determined by the operating speed of the first water pump 8, and Wz is Wp + V/Vz × Q, where V is Va or Vb, and Q is a calculated compensation parameter of the operating speed of the first water pump 8 with respect to the operating 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, the water in the second water storage well 6 is guaranteed to be discharged, rainwater is prevented from being stored, and the risk of rainwater backflow is reduced.
A construction site rain sewage drainage method realized by applying the construction site rain sewage drainage system comprises the following steps,
s1, constructing an infrastructure, excavating a first ditch and a first water storage well at the bottom of the foundation pit, arranging a first water pump in the first water storage well, excavating a second ditch 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 and the first water pump through the first ditch, and arranging a water level detection device in each water storage well;
s2, detecting the water level in the first water storage well in real time by a first water level detection device in the first water storage well, and judging whether to start the first water pump 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;
and S4, detecting the water level in the second water storage well in real time by a second water level detection device in the second water storage well, judging whether to start the second water pump according to the water level, wherein the starting speed of the second water pump is determined by the running speed of the first water pump.
So far, the technical solutions of the present invention have 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 the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A rain and sewage drainage system for a construction site 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, is connected with the first ditch and is used for storing accumulated water at the bottom of the foundation pit, and is internally provided with a first water level detection device which can detect the water level in the first water storage well;
the second ditch is arranged around the top of the foundation pit and used for preventing accumulated water on the ground from flowing into the foundation pit;
the second water storage well is connected with the first water channel and used for storing surface accumulated 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 pumping 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 used for pumping water stored in the second water pumping well, the second water pump is connected with a second water pumping pipeline, and the second water pumping pipeline discharges accumulated water on the construction site to the outside of the construction site;
the central control system is connected with the first water level detection device, the second water level detection device, the first water pump and the second water pump respectively and used for adjusting the working states of all the parts, and 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; 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.
2. The rain and sewage drainage system for construction sites as claimed in claim 1, wherein a first water level detection parameter Az is provided 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 not more than Az, the central control system judges that the accumulated water in the first water storage well 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 needs to be discharged, the central control system controls the first water pump to be started, and the initial starting speed of the first water pump is Vz.
3. The rain and sewage drainage system for the construction site as claimed in claim 2, wherein a first water pump start detection period T1 is provided in the central control system, when the first water pump starts to pump water into 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 A1' with A1,
when A1' is not less than or equal to A1, the central control system judges that the water level of the first water storage well is not reduced and the drainage 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 determines that the water level of the first water storage well descends, and determines whether to adjust the running speed of the first water pump according to the descending speed of the water level.
4. The construction site rain and sewage drainage system according to claim 3, wherein when the central control system adjusts the operation speed of the first water pump because the water level does not drop, 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 first water pump acceleration base value when the water level does not drop, and D1 is a calculated compensation parameter of the water level for the first water pump acceleration when the water level does not drop.
5. The construction site rain and sewage drainage system of claim 4, wherein when the central control system determines that the water level of the first water storage well is lowered, the central control module calculates a first water storage well water level lowering value Δ A, Δ A being A1-A1', a first water storage well water level lowering evaluation parameter Ap is arranged in the central control system, the central control system compares the first water storage well water level lowering value Δ A with the first water storage well water level lowering evaluation parameter Ap,
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 the delta A is larger 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.
6. The construction site rain and sewage drainage system according to claim 5, wherein when the operation speed of the first water pump is adjusted due to the fact that the first storage well water level descending speed does not reach the standard, the central control system adjusts the operation speed of the first water pump to Vb, Vb ═ Vz + (Ap- Δ A) x C, wherein C is a calculated compensation parameter of the first water pump acceleration by the water level when the first storage well water level descending speed does not reach the standard.
7. A rain and sewage drainage system for construction site as claimed in claim 6 wherein the central control system is provided with 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, wherein when the operation speed of the first water pump is adjusted due to the determination 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 Δ A with a first preset water level drop value comparison parameter a1, a second preset water level drop value comparison parameter a2,
when the delta A is not more than a1, the central control system selects a first preset calculation compensation parameter value C1 of the first water pump acceleration as a calculation compensation parameter C of the first water pump acceleration;
when delta A is more than a1 and less than or equal to a2, the central control system selects a second preset calculation compensation parameter value C2 of the first water pump acceleration as a calculation compensation parameter C of the first water pump acceleration;
and when the delta A is larger than a2, the central control system selects a third preset calculation compensation parameter value C3 of the first water pump acceleration as a calculation compensation parameter C of the first water pump acceleration.
8. The rain and sewage drainage system for construction sites as claimed in claim 7, 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 not more than Bz, the central control system judges that the accumulated water in the second water storage well 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 needs to be discharged, the central control system controls the second water pump to be started, and the initial starting speed of the second water pump is Wz.
9. The construction site rain and sewage drainage system of claim 8 wherein the second water pump initial start speed Wz is determined by the operating speed of the first water pump, Wz + V/vzxq, where V Va or Vb, Q is a calculated compensation parameter of the operating speed of the first water pump to the operating speed of the second water pump.
10. A method for draining rain sewage on a construction site by applying the rain sewage system on the construction site according to claim 1, which comprises,
s1, constructing an infrastructure, excavating a first ditch and a first water storage well at the bottom of the foundation pit, arranging a first water pump in the first water storage well, excavating a second ditch 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 and the first water pump through the first ditch, and arranging a water level detection device in each water storage well;
s2, detecting the water level in the first water storage well in real time by a first water level detection device in the first water storage well, and judging whether to start the first water pump 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;
and S4, detecting the water level in the second water storage well in real time by a second water level detection device in the second water storage well, judging whether to start the second water pump according to the water level, wherein the starting speed of the second water pump is determined by the running speed of the first water pump.
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