124 results about "Stream gauge" patented technology

The invention relates to the technical field of measurement, in particular to a float-type water level gauge dynamic compensation detection method which comprises the following steps: collecting float angle sequence data; synchronously acquiring environment disturbance parameters; calculating the floater angle sequence data to obtain a preliminary water level value; constructing a dynamic compensation model, and outputting an inertia force correction term, a fluid damping correction term and a mechanical hysteresis correction term; the inertia force correction term, the fluid damping correction term and the mechanical hysteresis correction term are multiplied by corresponding weight factors respectively, then algebraic sum is solved, a total compensation amount is obtained, and the weight factors are dynamically adjusted and normalized according to the current wave high energy spectral density, the wind speed gradient change rate and the water temperature viscosity correction coefficient; and deducting the total compensation amount from the initial water level value, and outputting a final compensated water level value. According to the method, the problems of poor multi-physical field sensing capability and poor online parameter identification capability of a compensation method in the prior art are solved.

The application discloses a redundant measurement value transmitting method for a single measuring point water level gauge of a ship lock chamber. The method comprises the following steps: simultaneously detecting the water level of a certain measuring point in the ship lock chamber by N water level gauges, obtaining multiple water level detection values of the measuring point at a certain time; determining a water level deviation threshold G2 of the measuring point and a detection value deviation threshold G3 of the multiple water level gauges according to a ship lock chamber water level change threshold G1 and a water level gauge detection range R; comparing the multiple water level detection values Vn of a certain measuring point with the determined water level deviation threshold G2 of the measuring point; performing difference value operation on the obtained reasonable water level detection value Vm; selecting N1 water level detection values as the water level detection basic data of the measuring point, performing secondary processing, and obtaining the water level detection effective value Ve of the measuring point. The application discloses a redundant measurement value transmitting method for a single measuring point water level gauge of a ship lock chamber. The ship lock single measuring point adopts multiple water level sensors for redundant detection, voting verification, error processing and detection value transmission of multiple detection values, and reliable and stable water level data is provided for the system.

The application relates to the technical field of hydrological monitoring and discloses an intelligent hydrological monitoring system based on Internet of Things, which comprises an upper computer, a flow measurement control platform, a network communication module, a PLC controller, a mechanical system and a flow measurement system. The flow measurement control platform respectively instructs the PLC controller and the flow measurement system through the network communication module. The flow measurement system is used for acquiring hydrological monitoring data and uploading the flow measurement control platform. The flow measurement system comprises an ADCP flow measurement, a radar flow measurement, a time-difference method ultrasonic flow measurement, a propeller current meter and a field water level meter. The flow measurement system selects a flow measurement method according to needs at different measuring point positions in the same section to jointly measure the flow. The flow measurement system is equipped with multiple flow measurement methods and is uniformly controlled and dispatched by the flow measurement control platform, so that the monitoring system has good expandability. On this basis, a corresponding flow measurement scheme can be automatically generated according to different water level levels, the advantages and disadvantages of various flow measurement methods are complementary, and the detection precision is further improved.

The invention relates to an open channel clogging real-time diagnosis system and method based on voiceprint and flow velocity fusion, and the method comprises the steps: a plurality of monitoring nodes are arranged along an open channel, the monitoring nodes are arranged at intervals according to the length of the channel, the terrain and the conditions of easy-to-deposit sections, and each monitoring node at least comprises an underwater sound sensor installed underwater on the side wall of the channel, the ultrasonic Doppler flow velocity sensor is installed at the position about 0.3 m underwater on the side wall of the channel, and the pressure type water level gauge is installed at the bottom of the channel and used for measuring the water level. According to the invention, various sensors are used for continuously monitoring the operation state of the open channel for 7 * 24 hours, and a multi-source information fusion acquisition mode is adopted, so that abnormal signals can be detected at the initial stage of clogging, intelligent diagnosis can be carried out, the clogging position can be positioned, early warning can be given out, and the inspection is more timely than manual inspection. And timely early warning and rapid positioning are helpful for the management department to take measures as soon as possible, so that small problems are prevented from being evolved into large dangerous cases, and safe operation of the channel is guaranteed.

The invention relates to the technical field of water level measurement, in particular to a radar water level meter mounting rack, which comprises a mounting assembly, a water level meter, a water level meter, a water level meter, a water level meter, a water level meter and a water level meter, the adjusting assembly is arranged on one side of the cross beam and comprises an angle adjusting part arranged at the bottom of the cross beam and a displacement adjusting part arranged between the cross beam and the water level gauge mounting seat; the angle adjusting part comprises a bottom plate connected to the bottom of the support and the bottom of the cross beam and a supporting seat arranged at the bottom of the bottom plate, and the bottom plate is rotationally connected with the supporting seat. According to the invention, through mutual cooperation between the installation assembly and the adjusting assembly, the distance between the water level gauge and the maintenance position can be adjusted, and through arrangement of the anti-inclination assembly, the problem of large measurement error caused by inclination of the water level gauge is solved.

The utility model discloses a water level detection assembly, and relates to the technical field of water level detection equipment. The radar water level gauge comprises a radar water level gauge body and a fixing rod, a mounting plate is arranged on the outer side surface of the radar water level gauge body, a concave groove is formed in one side of the fixing rod, a sliding plate is arranged in the concave groove in a sliding mode, an assembling assembly is arranged on the side, close to the radar water level gauge body, of the sliding plate, and the assembling assembly is detachably connected with the mounting plate. According to the utility model, the mounting plate and the mounting block can be assembled together, then the bolt can be inserted into the corresponding through hole, the mounting plate and the mounting block are assembled together by matching with the nut, and then the mounting block can be inserted into the connecting hole, so that the mounting plate and the mounting block can be assembled together, and the mounting plate and the mounting block can be assembled together. The double-end lead screw can rotate through the round block by rotating the rotating disc, the positioning block enters the positioning groove, the mounting plate can be mounted, and when dismounting is needed, the ratchet is shifted, and then the rotating disc is rotated.

The utility model relates to the technical field of underground water level observation, and discloses a hydrogeological exploration underground water level observation device which comprises a water level gauge body and a mounting frame connected to the outer wall of the water level gauge body. According to the water level gauge, the protective cover is arranged on the water level gauge body, the water level gauge body which is not used can be protected by the protective cover, the elastic cushion layer is arranged on the inner side of the protective cover, impact force generated when the protective cover is collided can be effectively absorbed, damage is effectively avoided, and the water level gauge body cannot be accidentally collided and damaged when being carried outdoors; the protective cover is rotationally connected, when the water level gauge body is used, opening and closing can be achieved only in a rotating mode, and operation is easy and practical.

The utility model relates to the technical field of water conservancy parameter monitoring, in particular to a water conservancy flood control early warning device, and aims to solve the problem that a rain gauge in existing water conservancy flood control early warning is high in cost. The device comprises a water level gauge and a rain gauge, the rain gauge comprises a rainfall collector, a first tipping bucket, a second tipping bucket and a switching structure, the lower end of the rainfall collector is open, and the volume of a second metering groove of the second tipping bucket is larger than that of a first metering groove of the first tipping bucket; the switching structure comprises a switching driving assembly and a drainage piece, the drainage piece has a first state and a second state, and the switching driving assembly is used for switching the drainage piece between the first state and the second state. Under the condition of small rainfall, the drainage piece is in a first state, and rainwater in the rainwater collector is drained to the first tipping bucket; and under the condition of large rainfall, the switching driving assembly is started to drive the drainage piece to be in the second state, and rainwater in the rainwater collector is drained to the second tipping bucket, so that the rainfall measurement accuracy is improved.

The invention provides a self-adaptive dual-mode flow metering device and method for a riverway ecological water replenishing recharge well, and relates to the technical field of hydrological monitoring. The device monitors the water level in the well in real time by arranging a second water level sensor, and a control unit intelligently judges whether the current recharge working condition is a water falling working condition or a full pipe flow working condition according to the water level information; further, a volume method or a flow velocity method is autonomously selected for flow measurement, and continuous, accurate and automatic monitoring of the flow under the full-working-condition operation condition of the recharge well is achieved; under the water drop working condition, the electric on-off valve is closed to accumulate water flow in the cylindrical measuring cylinder, and the average flow is calculated based on the water level in the cylinder measured by the first water level sensor; under the full pipe flow working condition, the valve is kept open, and the instantaneous flow is calculated based on the section average flow velocity measured by the Doppler flow meter; and due to automatic switching of the two modes, the reliability and adaptability of flow monitoring of the recharge well in a complex dynamic environment are remarkably improved.

The present application relates to the technical field of measurement, and more particularly to a dynamic compensation detection method for a float type water level meter, which comprises: collecting float angle sequence data; synchronously collecting environmental disturbance parameters; performing calculation on the float angle sequence data to obtain a preliminary water level value; constructing a dynamic compensation model to output an inertial force correction term, a fluid damping correction term and a mechanical hysteresis correction term; multiplying the inertial force correction term, the fluid damping correction term and the mechanical hysteresis correction term by corresponding weight factors respectively, and then obtaining an algebraic sum of the three terms to obtain a total compensation amount, wherein the weight factors are dynamically adjusted according to the current wave height energy spectrum density, the wind speed gradient change rate and the water temperature viscosity correction coefficient, and are subjected to normalization processing; and deducting the total compensation amount from the preliminary water level value to output a final compensated water level value. The present application solves the problems of poor multi-physical field sensing ability and poor online parameter identification ability of the compensation method in the prior art.

The utility model belongs to the technical field of water level monitoring, and discloses a channel water level monitoring device which comprises an ultrasonic water level gauge, an anti-collision mechanism is arranged on the ultrasonic water level gauge, the anti-collision mechanism comprises a cross rod, a pulley capable of rotating when collided is installed at the front end of the cross rod, and a pressed spring capable of being bent when collided is arranged behind the cross rod. Compared with the prior art, the ship anti-collision device has the following advantages that when the ship anti-collision device is designed, the pulley rotates to change the stress direction, and scraping destructive force is resolved; if the ship accidentally collides with the side face of the cross rod, the compressed spring is bent to absorb impact force; the transverse rod rotates to drive the auxiliary block to rotate along the top ring groove to stabilize the position of the transverse rod; if the ship collision direction is right ahead the horizontal position of the cross rod, when linear collision extrusion force arrives, the buffer plate enables the buffer spring to be compressed to slowly release the extrusion force, and the risks of deformation and damage of the device are reduced.

The invention relates to the field of agricultural irrigation monitoring, and provides a crop area water level determination method and device and a storage medium. The determination method comprises the following steps: generating a digital elevation model of a crop region, wherein the crop region comprises a plurality of sub-regions; determining elevation data of each sub-region from the raster data of the digital elevation model based on a predefined field boundary vector diagram to obtain elevation matrix data of each sub-region; performing visualization processing on the elevation matrix data of each sub-region to generate an elevation distribution diagram, and marking pixel points of a preset elevation in the elevation distribution diagram; determining a target mounting position of the water level gauge based on the elevation distribution diagram; acquiring water level data acquired by a water level gauge and elevation data at a target mounting position; and determining a water layer coverage area proportion and / or an average water layer height in the crop area based on the digital elevation model, the water level data and the elevation data at the target installation position. The method can provide accurate irrigation decision support for crops.

The invention belongs to the technical field of flood forecasting, and particularly relates to a method for calculating post-wave water level by sudden flood forecasting flow, which comprises the following steps: S1, acquiring hydrological observation and flow forecasting data, and determining a calculation control node; s2, calculating a first adaptive flow and a first water level before the node 2; s3, calculating a first adaptive flow and a first water level behind the node 2; s4, calculating a second adaptive flow and a second water level before the node 2; s5, calculating a second adaptive flow and a second water level after the node 2; s6, according to the first adaptive flow, the first water level, the second adaptive flow and the second water level, the water surface gradient process is calculated; and S7, outputting a post-wave water level forecast calculation result according to preset data submission ending time. According to the method, two post-wave flood indicating flow hydrographs and corresponding water level hydrographs can be generated, and the technical level of post-wave water level forecasting of the flood is effectively improved.

1. The name of the design product: radar pressure complementary intelligent water level meter. 2. The use of the design product: for water level monitoring of urban pipe network. 3. The design points of the design product: in the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view.

This system provides a simple prediction method for forecasting river water levels. [Solution] The water level prediction system predicts the future water level at a prediction point in a river and comprises: a rainfall acquisition unit 1 that acquires the future rainfall amount of the catchment area for the prediction point; a storage unit 2 that stores parameters of a first-order lag system that takes the rainfall amount as input and outputs the water level at the prediction point in the river; and a water level prediction unit 3 that takes the rainfall amount acquired by the rainfall acquisition unit 1 as input and calculates the predicted water level at the prediction point in the river from the first-order lag system using the parameters of the first-order lag system stored in the storage unit 2, wherein the time constant of the first-order lag system is set according to the water level at the prediction point in the river.

The hydrological intelligent display instrument comprises a host, a touch display screen, a water level gauge and a mounting column, a three-layer intelligent hydrological system is pre-installed in the host, and a sensing and data layer fuses multi-source data and constructs a decision data foundation; the intelligent and calculation layer carries out rapid deduction and quantitative analysis by using a calibrated hydrodynamic model; and the interaction and execution layer provides a multi-scheme comparison view and assists on-site accurate execution through an AR technology. According to the invention, the fundamental transformation from artificial experience research and judgment to man-machine cooperation intelligent rehearsal is realized.

The application discloses a large-amplitude contact type water level gauge detection and calibration device, and belongs to the technical field of water level detection. The device comprises a standard water level gauge system, which is used for obtaining a standard water level value in a detection well; a water level adjusting system, which is used for adjusting the water level in the detection well according to a target water level and a water level change rate; and a data acquisition control system, which comprises a programmable logic controller and is connected with the standard water level gauge system, the water level adjusting system and a detected water level gauge respectively, is used for acquiring data of the water level adjusting system, controlling the water level adjusting system to work through proportional-integral-derivative operation, and controlling an electromagnetic valve and a variable frequency pump to be synchronously opened and closed, and is used for acquiring data of the standard water level gauge system and the detected water level gauge in the detection well, comparing a measurement value acquired by the detected water level gauge with a standard water level value acquired by the standard water level gauge system, and completing water level gauge detection and calibration. The device can realize automatic detection and calibration of the large-amplitude contact type water level gauge based on accurate water level control.

The utility model discloses a water level gauge mounting bracket, which relates to the technical field of water level gauges, and comprises a support rod piece, a connecting rope and a cylinder body, the support rod piece is vertically arranged, and the lower end of the support rod piece can be inserted and fixed at the bottom of a water body to be measured; one end of the connecting rope is fixedly connected with the upper end of the supporting rod piece, and the other end is fixedly connected with the water level gauge; the barrel is fixed to the supporting rod piece and extends in the length direction of the supporting rod piece, the upper end of the barrel is open, the lower end of the barrel is closed, and the barrel can contain a water level gauge; the water level gauge mounting bracket disclosed by the utility model does not influence the measurement accuracy of the water level gauge, and is convenient for mounting and taking out the water level gauge; the utility model further discloses a water level gauge assembly which comprises the water level gauge and the water level gauge installation support.

The utility model discloses a water level measuring device for a water conservancy project, which relates to the technical field of water level measuring devices, and comprises a radar water level gauge and a support assembly for providing installation support for the radar water level gauge, the support assembly comprises a support unit and a rotation adjusting unit; the supporting unit is used for providing mounting support for the radar water level gauge; the rotation adjusting unit is used for adjusting the radar water level gauge to the position above the channel or to the shore side from the position above the channel. By arranging the support assembly with the rotary adjusting unit, position adjustment of the radar water level gauge between the position above a channel and the shoreside can be achieved, maintenance personnel can make contact with the radar water level gauge conveniently by adjusting the radar water level gauge to the shoreside, and the radar water level gauge can be disassembled and operated conveniently and rapidly; and the maintenance work efficiency of the radar water level gauge is effectively improved.

The utility model relates to the technical field of water level gauge installation, in particular to a large underwater structure water level gauge installation device which comprises a base, a balancing weight is fixedly arranged in the center of the interior of the base, an installation frame is fixedly arranged at the upper end of the base through bolts, and a first fixing limiting ring and a second fixing limiting ring are fixedly arranged on the two sides of the installation frame respectively. An elastic mechanism is fixedly arranged on the inner side of the second fixed limiting ring, a movable limiting ring is installed on the surface of the elastic mechanism, and a bubble water level gauge is arranged on the inner side of the movable limiting ring and the inner side of the first fixed limiting ring in a sleeving mode and is installed by adopting the structure that the elastic mechanism is matched with the first fixed limiting ring and the second fixed limiting ring. The installation can be completed only by pressing the movable limiting ring to enable the elastic mechanism to contract, placing the water level gauge and then loosening the water level gauge, complex underwater welding, bolt fixing and other operations are not needed, the installation time is greatly shortened, and the installation efficiency is improved.

The invention relates to a water lifting type tubular micro-water test device and a micro-water test method. The device comprises a static pressure pipe, a rigid permeable structure, a water lifting cylinder, a water level gauge and a collector. The bottom of the static pressure pipe is connected with a rigid permeable structure and is pressed into a target aquifer under the action of static pressure pipe equipment; the water lifting cylinder can lift in the static pressure pipe and is provided with a water container and a one-way valve, so that water can only flow into the water container in one way without flowing back during water taking; the water level gauge is located at the bottom of the water lifting barrel, and the data line penetrates through the water container and is connected with the collector for collecting water level change data. The test method comprises the steps of static pressure soil entering, water level gauge lowering, water lifting cylinder lowering, water lifting recovery and hydrogeological parameter calculation. According to the invention, the drilling and well completion process is avoided, the construction steps are simplified, the cost is reduced, the disturbance to the groundwater environment is reduced, and the test efficiency is improved.

The invention discloses a one-dimensional hydraulic simulation method for flood routing of a compound multi-flood-discharge channel river, which comprises the following steps of: dividing a to-be-modeled river into a plurality of river sections according to the distribution condition of flood discharge channels, and modeling the whole river section without a separation embankment between a river channel and a bottomland by adopting a one-dimensional hydraulic model, and for a river section with a separation embankment between a river channel and a beach land, transversely dividing the river section by taking the separation embankment as a boundary to obtain a thalweg line and a cross section of each flood discharge channel, independently modeling each flood discharge channel, and establishing a coupling relationship between sub-sections obtained by splitting the same original large section to realize flow exchange. Finally, coupling all the river reaches through nodes according to the actual convergence relation to achieve simulation calculation of the whole river reach. According to the method, the problem of distortion of large-section one-dimensional overall generalized water level calculation is solved, two-dimensional modeling of the bottomland is not needed, the advantage of simplicity and convenience of one-dimensional modeling is reserved, the reliability of a simulation result is guaranteed, the technical practicability and economy are improved, and the actual requirements of flood simulation of water conservancy projects are met.

The utility model relates to a kind of smooth recovery device of electric water level gauge measuring scale, including winding reel, ratchet wrench, support, fixed hole, screw, measuring scale outlet, measuring scale, measuring scale probe, shell.Electric water level gauge in the recovery measuring scale process will occur the condition that measuring scale is stuck in the outside of winding reel, this condition can lead to two problems of instrument abrasion aggravation and operation efficiency reduction;Using this device, it can be conveniently fixed to electric water level gauge, quickly complete electric water level gauge wire winding work, improve hydrological observation work efficiency, it is practical equipment with remarkable effect.

This invention discloses an irrigation scheduling system for irrigation canal systems, comprising: multiple remotely controlled gates, multiple flow meters, multiple water level gauges, and a cloud-based processing and control subsystem. Each canal has a remotely controlled gate at its inlet; the flow meters are located downstream of the remotely controlled gates; a water level gauge is installed at both the head and tail of each canal; the cloud-based processing and control subsystem sends gate adjustment commands to the remotely controlled gates based on the instantaneous flow rate detected by the flow meters. This invention detects water flow in the canals using flow meters and water level gauges and transmits the data wirelessly to the cloud-based processing and control subsystem. This allows for real-time acquisition of irrigation data for the canal system and automatic control of the gate openings, improving the automation level of irrigation canal system water management. This significantly reduces the difficulty of water resource scheduling in irrigation areas, saves labor, improves the efficiency of water resource scheduling, and further enhances irrigation area management efficiency.

The application discloses a comprehensive pipe gallery structure safety monitoring method and system based on underground water level data, relates to the technical field of safety monitoring, and comprises the following steps: arranging P pressure water level gauges in a target comprehensive pipe gallery; performing structure response node positioning to obtain a plurality of spatial structure response nodes; deploying a plurality of multi-modal sensing device groups at the plurality of spatial structure response nodes; integrating P real-time underground water levels returned by the P pressure water level gauges and a plurality of multi-modal structure sensing data returned by the plurality of multi-modal sensing device groups on a safety monitoring platform; performing pipe gallery local risk dynamic quantification to obtain a pipe gallery local risk distribution; and converting the pipe gallery local risk distribution into a pipe gallery risk heat map for output. The application solves the technical problem that the influence of underground water level changes on a comprehensive pipe gallery structure is difficult to realize multi-source dynamic sensing and risk quantification in the prior art, and achieves the technical effect of realizing real-time dynamic monitoring and visual output of comprehensive pipe gallery structure risks.

This invention discloses a device for measuring the transverse distribution of unit width flow rate in a vegetated water flow system. The device is longitudinally arranged with a uniform flow control zone, a vegetated water flow simulation zone, and a thin-walled weir zone. Multiple thin-walled weirs are evenly distributed at the tail end of the thin-walled weir zone, and weir plates extend forward from the thin-walled weirs into the vegetated water flow simulation zone. A water level regulating device is installed at the connection point between adjacent weir plates and the vegetated water flow simulation zone. A first water level gauge group is located in the first 1 / 3 of the vegetated water flow simulation zone, a second water level gauge group is located in the second 2 / 3, a third water level gauge group is located in the inlet area at the front of the thin-walled weir zone, and a movable fourth water level gauge group is located in the thin-walled weir zone. The device is simple and easy to implement, and the water level regulating device has a simple structure, making it suitable for reducing the influence and errors of experimental devices in various complex water flow structures. The device offers rigorous scientific technology, simple operation, wide applicability, and strong applicability, facilitating physical model experiments.

The application provides a water level precision optimization method and system based on a high-precision constant-current bubble water level gauge, and belongs to the technical field of hydrological monitoring. The method comprises the following steps: constructing a working condition characteristic vector at the current time based on multi-source data; compensating the reading of a back pressure sensor to obtain a first water level value; matching the working condition characteristic vector at the current time with a pre-stored optimal compensation parameter solution set; in response to the matching degree being greater than or equal to a preset matching threshold, using the matching compensation parameter in the optimal compensation parameter solution set to correct the first water level value to obtain a final optimized water level value; in response to the matching degree being less than the preset matching threshold, generating an optimization parameter based on a preset correlation matrix; inputting the first water level value, the optimization parameter and the working condition characteristic vector into a residual correction model to obtain a water level residual correction value; and adding the first water level value and the water level residual correction value to obtain a final water level value. The application improves the measurement stability and accuracy of the bubble water level gauge.

The utility model relates to the technical field of gas collection and measurement, in particular to a soil greenhouse gas collection device capable of automatically sealing and sampling in a desert region. The utility model provides an automatic sealing and sampling soil greenhouse gas collecting device in a desert region. The automatic sealing and sampling soil greenhouse gas collecting device comprises a box body, a gas closing water tank, a sampling device, a water sealing device and a control system, an opening is formed in the bottom end of the box body, and the sampling device is mounted at the top end of the box body and is used for sucking gas in the box body; the closed water tank is provided with a tank body matched with the box body, and the bottom of the box body is inserted into the tank body matched with the bottom of the box body; the water sealing device comprises a water tank, a water injection pump and a water level gauge, and a water inlet of the water injection pump is communicated with a water outlet of the water tank through a pipeline. The sealing performance between the box body and the closed water tank is improved, and the data reliability is improved.

The technical scheme relates to the field of hydrology and water resource equipment, in particular to a steel ruler water level gauge capable of preventing well wall water flow interference, which comprises a metal probe shell, and the rear end of the metal probe shell is fixedly connected with a steel ruler cable measuring rope; the end part of the front end of the metal probe shell is open, a plurality of side holes are uniformly formed in the side wall of the front end of the metal probe shell at intervals, the outer side of the front end of the metal probe shell is fixedly sleeved with a waterproof cover, the end part of the front end of the waterproof cover is open, and a plurality of air holes are formed in the waterproof cover. And the air holes and the side holes are arranged at intervals along the circumferential direction of the metal probe shell. The utility model has the beneficial effects that by arranging the waterproof cover, water flow on the well wall can be effectively prevented from entering the metal probe shell from the side hole to influence the detection of the detection probe, so that the accuracy of a detection result is improved; meanwhile, the vent holes can prevent air in the waterproof cover from being discharged and preventing the detection probe from being in contact with the underground water surface.

The utility model relates to the technical field of building drainage, in particular to a drainage blockage monitoring and dredging system which comprises a main pipe body, a first branch pipe body, a water tank, a water level gauge and a high-pressure pump. A first one-way valve is arranged in an inner cavity of the main pipe body; one end of the first branch pipe body is connected to one side of the main pipe body; a detection cavity is formed in the water tank, the first branch pipe body communicates with the detection cavity, and the water level gauge is located in the detection cavity; and the high-pressure pump is electrically connected with the water level gauge. The drainage system overcomes the defect that in the prior art, when a main vertical pipe of a drainage system is blocked, the main vertical pipe cannot be found and dredged in time, sewage flows backwards, and the living quality of residents is affected, the first one-way valve is arranged in the main pipe body, and the first one-way valve can prevent the sewage from flowing backwards upwards through the main pipe body; the system is further provided with a first branch pipe body, a water tank, a water level gauge and a high-pressure pump, automatic monitoring and automatic dredging of blockage of the drainage system can be achieved, and the situation that sewage flows backwards to high floors to affect the living quality of residents is avoided.