129 results about "Drainage design" patented technology

The invention discloses a saline-alkali soil improvement control analysis method and system based on digital twinning, and belongs to the technical field of saline-alkali soil improvement control analysis, and the method comprises the steps: firstly obtaining and preprocessing the terrain, soil permeability and precipitation data of saline-alkali soil, predicting a retention water accumulation region through employing a support vector machine algorithm, and estimating the amount of retained water by using a Kriging interpolation method. Then, the dynamic change process of the retained water is simulated through an artificial neural network algorithm, the information is integrated into a digital twinborn model, and visualization of spatial distribution and dynamic change of the retained water is achieved. And finally, on the basis of retained water information in the digital twin model, optimizing the layout and depth of the drainage ditch, selecting proper drainage materials and modes, and forming a complete drainage design scheme. According to the method, accurate prediction, dynamic simulation and visual analysis of the retention water of the saline-alkali soil are realized through a method of combining data driving and an intelligent algorithm, and a scientific basis and decision support are provided for improvement of the saline-alkali soil and agricultural production.

The invention discloses a backwater side seepage drainage and pressure reduction anti-seepage method based on a built sandy soil embankment foundation, and relates to the field of hydraulic engineering embankment seepage control. The technical problems that in existing sandy soil embankment foundation seepage drainage design, due to dynamic change of soil layer permeability, the drainage effect is poor, and slope stability is difficult to guarantee are solved. The method comprises the following steps: establishing a seepage field model through a three-stage hydraulic fracture test, and measuring a permeability coefficient, critical pressure and a failure criterion; the groove is dynamically excavated in three stages, the excavation depth and the slope gradient are corrected in real time according to actually measured data, and the shape of the groove is verified through a model; and finally, laying an inverted filter layer, a drainage body and an anti-scouring layer, wherein the permeability coefficient of the inverted filter layer and the aperture ratio of the drainage body are dynamically adjusted according to actually measured data. According to the method, accurate control over seepage drainage and pressure reduction of the sandy soil embankment foundation is achieved through dynamic coupling of testing, construction and a numerical model, and the method is mainly used for seepage treatment of the backwater side of a built embankment and slope stabilization and reinforcement.

The utility model relates to the technical field of outdoor protection boxes, in particular to an outdoor protection box with a drainage function, which comprises a box body, a box door is rotatably connected to the surface of the box body, a base is fixedly mounted at the bottom of the box body, an inclined table is fixedly mounted in the base, and a drainage plate is fixedly mounted between the box body and the base. And a limiting frame is fixedly mounted on the surface of the drainage plate. According to the utility model, a complete drainage system is formed through the top water collecting tank, the side flow guide pipe, the bottom inclined table, the drainage plate and the sponge body in the box body, rainwater is rapidly collected by the water collecting tank and is guided into the base through the flow guide pipe, the water is discharged out of the box by the inclined table by utilizing gravity, water permeation is prevented, and meanwhile, the drainage plate is combined with the sponge body; the multi-layer drainage design improves the adaptability of the protection box in a humid environment, effectively protects internal equipment, and prolongs the service life.

The invention discloses a granite residual soil slope section structure optimization method which is applied to the technical field of slope prevention and control. Comprising the steps that S1, geological drilling is conducted on a slope to be excavated, hydrogeological conditions are investigated to obtain relevant data of the slope, and the relevant data comprise stratum lithology, a slope body structure, an underground water level and a rainfall condition; s2, measuring physical and mechanical properties of stratum lithology according to the obtained side slope geological drilling core sample; s3, according to the height of the side slope, the stratum lithology, the land use red line and the surrounding environment, design parameters of the side slope stages, the slope ratio of each stage of the side slope, the height of each stage of the side slope and the platform width of the side slope to be excavated under different working conditions are designed; s4, obtaining slope stability coefficients corresponding to different working conditions based on S2 and S3, and obtaining an optimal section structure design working condition; s5, performing protection and retaining design on the slope to be excavated according to the principles of technology feasibility, economy, reasonability and ecological environmental protection on the basis of the step S4, obtaining a slope stability coefficient, and obtaining a protected slope section structure; and S6, on the basis of the S5, in combination with hydrogeology and meteorology, drainage design of the slope to be excavated is carried out, and finally an optimized slope section structure is obtained. According to the method, the long-term stability of the slope can be improved, better environmental adaptability and ecological friendliness are provided, engineering protection measures are reduced, and the construction and maintenance cost is reduced.

The utility model discloses a bathroom base plate and an assembly type integral bathroom, and belongs to the technical field of assembly type home decoration. The bathroom base plate comprises a base plate body pull groove brick and an enclosing plate. A water outlet is formed in one side of the base plate body, a frame is arranged on the periphery of the base plate body, the broaching groove bricks are laid on the base plate body, and a plurality of broaching grooves are formed in the top faces of the broaching groove bricks; the enclosing plate is arranged between the broaching groove brick and the frame, and the top surface of the enclosing plate is lower than the groove bottom of the broaching groove; a first notch used for avoiding the water outlet is formed in the enclosing plate. According to the bathroom base plate, the top face of the broaching groove brick can have a certain gradient, drainage is easy, the designed transverse broaching groove has the anti-skid function on the basis that drainage is conducted towards the two sides, and a user can keep standing easily. The water on the pull trough bricks can be evacuated to the surrounding plates on the periphery, a secondary drainage design is formed, the design is beneficial to drainage, and it is ensured that the large-flow drainage effect is achieved on a small slope.

The utility model relates to the technical field of drainage pipeline fixing, and discloses a building water supply and drainage design pipeline penetrating plate fixing structure which comprises a vertical plate, and a fixing device is arranged on the vertical plate. The fixing device comprises a groove, the groove is provided with the front face of the vertical plate, the inner wall of the groove is slidably connected with a sliding block, the front face of the sliding block is fixedly connected with a clamping block, the bottom of the sliding block is fixedly connected with a rack, a rotary knob is twisted to drive a threaded rod to rotate, the threaded rod drives the sliding block to move towards the bottom, and the sliding block moves towards the bottom to drive the rack to move towards the bottom. The rack drives the circular gear to rotate, the circular gear drives the rack on the right side to ascend, the circular gear drives the rotating block to rotate, the rotating block drives the movable rod to move towards the right side, the movable rod drives the sliding blocks on the two sides to move towards the middle, the sliding blocks drive the clamping blocks to clamp the cross-shaped pipeline, and four-point clamping is achieved. The deformation or damage of the cross-shaped pipeline caused by non-uniform pressure can be reduced, and more stable clamping is ensured.

The invention provides a Chicago rain pattern comprehensive rain peak coefficient calculation method based on geometric morphology of a rainstorm process, and aims to provide a theoretical basis and a calculation method system for Chicago rain pattern analysis in urban outdoor drainage design. According to the method, a comprehensive rain peak position coefficient of different rainfall durations is calculated by statistically analyzing a rain peak position coefficient of the rainfall durations and combining the same-frequency characteristics of the Chicago rain pattern, so that a traditional calculation method based on the early-stage influence rainfall and the rainfall duration weight is optimized. The method not only improves the efficiency of rainwater design work, but also adapts to the trend of improvement of urban drainage waterlogging prevention standards, and has important practical value and theoretical significance.

The invention belongs to the technical field of constructional engineering, and particularly relates to a basement bottom plate partitioned water filtering channel performance evaluation method. The method comprises the following steps: firstly, based on geological conditions of a target project and basement structure parameters, establishing a three-dimensional seepage geometric model comprising a basement bottom plate and a surrounding soil layer; then, corresponding hydraulic parameters are given to all soil layer materials and water filtering channel materials in the model; then, setting at least two calculation working conditions and carrying out steady-state seepage calculation under different underground water level conditions; and finally, comparing and analyzing the evaluation indexes of different working conditions, evaluating the performance advantages of the partitioned water filtering channel compared with a traditional drainage mode, and carrying out parameter sensitivity analysis and parameter selection. According to the method, the drainage performance of the basement bottom plate can be remarkably improved, the maximum pore water pressure below the bottom plate is reduced, the average seepage speed is increased, the drainage efficiency is improved, and scientific basis and technical support are provided for waterproof drainage design of the basement.

The invention relates to the technical field of ecological restoration, and provides an open-pit coal mine ecological restoration device and method designed for polder ridges and water interception and drainage. The open-pit coal mine ecological restoration device comprises a carrier used for hanging an ecological restoration operation machine tool, and the carrier is provided with a frame used for crossing over the polder ridges / water interception and drainage channels; the frame is symmetrically provided with a plurality of ground supporting assemblies used for being supported on the ground to enable the carrier to rise. The ecological restoration device further comprises a span moving assembly used for driving the rising carrier to move along the frame to cross over a polder ridge or an interception and drainage channel. When a user needs to cross over the polder ridge / interception drainage channel, the position of the carrier is adjusted firstly so that the frame can cross over the polder ridge / interception drainage channel, then the carrier is lifted by a certain height on the supporting ground through the ground supporting assembly, and then the lifted carrier is driven by the span moving assembly to move along the frame so as to cross over the polder ridge / interception drainage channel. And finally, the ground supporting assembly is reset, so that the carrier wheel body touches the ground, and the polder ridge / interception and drainage channel crossing action is completed.

The location of auxiliary drainage systems in a field is mechanically designed based on field preparation information. [Solution] The auxiliary drainage design method (S1) includes an acquisition step (S11) of acquiring the boundary line of the target field, a cut-and-fill construction map showing the extent of cut and fill of the field, and the location of the field's drainage outlet; a reference drainage line generation step (S12) of searching for the longest straight line from the drainage outlet location to the boundary line and generating it as a reference drainage line; a first auxiliary drainage line generation step (S13) of rotating the reference drainage line by a predetermined angle with respect to the reference drainage line centered on the drainage outlet location to generate a first auxiliary drainage line from the drainage outlet location to the boundary line; and a second auxiliary drainage line generation step (S14) of generating a plurality of second auxiliary drainage lines from the reference drainage line to the boundary line, taking into account the extent of the fill.

The utility model discloses an anti-ponding container house which comprises a container house main body, a waterproof shed is installed at the top end of the container house main body, the waterproof shed is fixedly connected with the surface of the top end of the container house main body through a supporting structure, and a supporting main beam and a supporting main frame are installed on the supporting structure. The supporting main frame is fixedly connected with the side surface of the container house body through triangular supporting side frames, the steel truss is fixedly connected with a bearing support through triangular supporting frames, a reinforcing base plate is arranged on the surface of the lower end of the bearing support, and the surface of the reinforcing base plate is fixedly connected with the surface of the top end of the container house body through bolts. The top end of the container house main body is subjected to waterproof and drainage design protection, and the waterproof shed is stably supported and protected by using the supporting and reinforcing structure, so that the container house has good structural stability and is not easy to collapse and damage, the safety and stability of the waterproof structure are improved, and the container house can bear stronger load and is long in service life.

The utility model relates to the technical field of freezer shelf glass, and discloses a foldable shelf glass device for a freezer, which comprises a freezer body, the inner wall of the freezer body is fixedly connected with a limiting bolt, the inner wall of the freezer body is fixedly connected with a fixed transverse column, the surface of the fixed transverse column is hinged with a rotating support plate, and the rotating support plate is fixedly connected with the limiting bolt. The surface of the rotating supporting plate is fixedly connected with a first storage rack, and a liquid leakage groove is formed in the first storage rack. The hooks are arranged to be in contact with the inner wall of the freezer, the rotary supporting rods are inserted into the limiting clamping frames to form mechanical interlocking, the first shelf and the second shelf are made of glass materials, metal limiting components are combined, and through a foldable structure, an efficient drainage design, a linkage fixing mechanism and humanized operation components, the storage rack is convenient to use. The three core advantages of space saving, stability improvement and convenience in cleaning of the freezer shelf are achieved, meanwhile, transparency, visualization and corrosion resistance are considered, and the freezer shelf is suitable for diversified storage requirements of household and commercial freezers.

The utility model relates to the technical field of industrial dust removal, in particular to an industrial dust removal device, which has the waterproof and drainage design and the capability of dealing with severe weather, a plurality of water bins and an efficient drainage system are arranged at the bottom of the device, water is drained orderly through an inclined plane and a connecting pipe, and a baffle effectively blocks external accumulated water. The drying bin and the electric heating device can remove moisture and residual moisture in the device, the stability of the device is improved, the service life of the device is prolonged, and the device is high in adaptability, capable of normally working in severe weather such as rainstorm and the like, simple and convenient to maintain and capable of reducing operation cost. Generally speaking, the utility model has the characteristics of high-efficiency drainage, flexible adaptation and easiness in maintenance, and the performance and reliability of the industrial dust removal device are obviously improved.

The invention relates to the technical field of road traffic safety and drainage design, in particular to a road guardrail base with anti-collision and drainage functions, the road guardrail base comprises a top connecting structure, a bearing structure and a drainage notch, the top connecting structure is fixedly connected with a concrete guardrail through embedded steel bars, the bearing structure is located below a pavement structure, and the drainage notch is located below the bearing structure. The drainage opening is formed in the top connecting structure, and the drainage opening is used for assembling a transverse water collecting ditch; the top connecting structure and the bearing structure are arranged at the top of the retaining wall, and the ground cloth difformis and the retaining wall can move relatively; the transverse water collecting ditch comprises an inlet and a drainage part, the drainage part is used for draining water transmitted at the inlet, and the inlet is formed between the transverse water collecting ditch and the concrete guardrail; longitudinal blind ditches are formed in the pavement structure and are in through connection with the drainage parts of the transverse collecting ditches through drainage pipes; therefore, under the condition of saving consumables, the influence of vehicle collision on the retaining wall is reduced through the ground cloth dips, and meanwhile the drainage capacity of a road is improved.

The invention discloses equipment and a method for testing stability of a tower footing under different scouring and soaking working conditions, the equipment comprises a support, a water supply device, a test device and a purification device are arranged on the support, one end of the test device is connected with the water supply device, and the other end of the test device is connected with the purification device; the adjusting device is also arranged on the bracket, is positioned at the top of the purifying device and is connected with the testing device; the control device is electrically connected with the water supply device, the purification device and the adjusting device; wherein the test device is used for placing a test soil sample and a tower footing, the water supply device is used for conveying a water source into the test device, the purification device is used for purifying the water source flowing out of the test device, and the adjusting device is used for adjusting the operation angle of the test device, so that a scientific basis is provided for waterproof and drainage design of the tower footing in actual engineering; and the problem of tower footing instability caused by underground water level change is avoided.

The invention discloses a large-span hyperbolic roof landscape drainage design method and system, and the method comprises the following steps: 1, simulating the real conditions of the slope of a basic site and the rainfall runoff based on a BIM model and according to the rainfall runoff stress principle through a circulation algorithm, and carrying out the visual analysis; 2, performing rule summarization and extraction on simulation and visual analysis results to obtain main flowing and converging routes of rainwater and variation differentiation of unit rainwater flow and flow velocity; and 3, designing a landscape drainage system of the large-span hyperbolic roof according to result characteristics of GH and BIM technical analysis. The invention relates to the technical field of constructional engineering, and can solve the problem of drainage defects of a traditional large-span hyperbolic roof landscape drainage design.

The utility model belongs to the field of drainage simulation devices, and discloses a drainage simulation device for water supply and drainage design, which comprises a simulation box and a drainage plate, the simulation box is connected with a box door and provided with a sliding groove, the drainage plate is slidably connected with the sliding groove and provided with a drainage channel, the drainage plate is detachably connected with a mounting plate, and the mounting plate abuts against the drainage plate. The installation plate is connected with a model and provided with a water leakage hole, the water leakage hole is in threaded connection with a sealing rod, the side wall of the drainage channel is slidably connected with a blocking plate, the blocking plate abuts against the installation plate, the simulation box is connected with a water storage tank, the water storage tank is connected with a first water pump, the first water pump is connected with a water outlet pipe, and the simulation box is connected with a water spraying pipe. The water storage tank is connected with a water adding pipe; according to the technical scheme, drainage conditions under different conditions can be simulated, the test integrity and accuracy are improved, the overall structure is simple, and use is convenient.

The application discloses a kind of installation systems of building integrated photovoltaics, the present application is by being provided with waterproof support assembly and horizontal guide rail, several photovoltaic units are slidably fixed on horizontal guide rail;Walking board is fixed between photovoltaic unit, personnel walking can be realized to realize the maintenance of photovoltaic unit;Photovoltaic panel is locked and positioned on the supporting plate by elastic bottom support, side baffle, pressing lock, and horizontal positioning assembly is arranged between adjacent brackets, and the horizontal movement of entire photovoltaic unit can be realized by artificial driving to realize the whole photovoltaic unit and the maintenance and maintenance and cleaning of roof by personnel, avoid the permanent damage caused by the building cannot be repaired;Photovoltaic panel arranged in the interior can be repaired or replaced flexibly, and the operation is simple;Waterproof and drainage design is realized, rainwater intrusion is reduced as far as possible, because the roof for installing photovoltaic panel is poor in moisture removal, this design can reduce the corrosion progress of roof, reduce the risk of house leakage.

The invention discloses a TBM (tunnel boring machine) descending construction shield water interception and drainage system, a shield structure, a main machine, equipment and a method. According to the water interception and drainage structure, a water stop ring with elastic tension at least towards the outside of the ring is arranged on the lower side of the rear portion of a front shield, and the water stop ring is provided with a connecting body and a continuous skirt part connected to the connecting body; the skirt portion in the peripheral direction of the anterior shield fits the roadway wall at least during operation to limit liquid flow in the forward direction of the anterior shield. The structure is simple, the shield structure design is optimized, the water blocking and drainage design is introduced for the situation that in the TBM descending tunneling process, liquid such as underground water can be accumulated, and consequently a cutter head falls or a cutter is pasted easily, and therefore the safety and stability of underground tunneling operation are guaranteed.

The application discloses a kind of foundation pit water inflow multi-source data intelligent prediction method, comprising: obtaining the depth of dewatering inside foundation pit, water level outside foundation pit, water pressure at different depths, actual water inflow and soil permeability coefficient;Determine the calculation area, and establish the control equation describing steady-state groundwater seepage and its corresponding constant head, constant flow boundary condition, while clearly defining the area continuous condition on both sides of foundation pit enclosure structure;Build depth learning neural network inside and outside foundation pit;Total loss function is constructed;Minimize the loss function using a phased optimization algorithm, thereby training network;Finally, the trained network is used to quickly and accurately predict water head distribution and water inflow inside foundation pit.The present application realizes the deep integration of physical mechanism and data-driven method, while ensuring that the prediction results strictly comply with physical laws, reduces the dependence on a large number of observation data, improves the accuracy and reliability of prediction, and provides better decision support for foundation pit dewatering design.

The invention relates to the technical field of curved surface runoff analysis, in particular to a data analysis method for rainwater runoff on multiple curved surfaces. Comprising the following steps: S1, establishing a plurality of curved surfaces on Grasshopper according to a to-be-analyzed building roof; s2, randomly generating raindrops above the plurality of curved surfaces, and enabling the raindrops to vertically fall down; s3, when the raindrop is in contact with the curved surface, generating a unit circle around the raindrop, and projecting the unit circle to the curved surface to form a projection curve; s4, judging whether the projection curve is closed or not; s5, when the projection curve is not closed, whether the raindrop reaches the edge of the curved surface or not is judged; s6, the steps from S3 to S5 are repeated, and a continuous flowing path of the rainwater is generated. The method has the beneficial effects that the approximate direction of the normal vector of the raindrops on the multiple curved surfaces is subjected to fuzzy calculation through a regional sampling method, the natural flowing direction of rainwater is judged, the calculation is continuously circulated to form the flowing path of the rainwater, and the continuous flowing path of the rainwater on the building roof is simulated and analyzed; and a reference basis is provided for drainage design of the building roof.

The invention relates to the technical field of ring main units, and discloses an environment-friendly primary and secondary fusion ring main unit which comprises a ring main unit fixedly mounted on a base, and further comprises a vertical shaft arranged on the base and located on the front side of a box door of the ring main unit; the lifting device is arranged in the vertical shaft and comprises an air cylinder arranged in the middle of the vertical shaft, a lifting plate is fixed to the top end of a push rod of the air cylinder, and the lifting plate ascends and descends on the vertical shaft; an evaporator pipeline of the air conditioning system is located in the outer box, and a condensation pipe of the air conditioning system is arranged at the bottom of the vertical shaft and fixed to the side wall of the bottom of the vertical shaft; the drainage channel is arranged in the base and communicated with the bottom of the vertical shaft. The device has the advantages of integrating lifting, drainage and refrigeration functions and improving maintenance convenience, air conditioner heat dissipation efficiency and drainage capacity, and solves the problems that high parts of an existing ring main unit are difficult to maintain, an air conditioner condenser is low in heat dissipation efficiency, and drainage design defects exist.

The utility model discloses a sewage pretreatment device for municipal water supply and drainage design, and relates to the technical field of drainage, the sewage pretreatment device for municipal water supply and drainage design comprises a treatment box, the top of the treatment box is provided with a slideway, the inside of the slideway is slidably connected with the slideway, and one side of the treatment box is fixedly provided with a motor; a threaded rod is installed at the output end of the motor, the surface of the threaded rod is in threaded connection with the interior of a moving block, a moving box is fixedly connected to the bottom of the moving block, a connecting pipe is fixedly installed at the bottom of the moving box, and a liquid discharging pipe communicating with the interior of the connecting pipe is fixedly installed at the bottom of the connecting pipe; and a plurality of large gears drive a plurality of rotating shafts to rotate, so that a plurality of dispersing blades rotate, the liquid medicine discharged by a liquid discharging pipe is dispersed conveniently, the liquid medicine is dispersed in the treatment box conveniently, sewage is pretreated conveniently, and full contact between the liquid medicine and the sewage is improved.

The invention provides a composite filler bioretention pond and a rainwater mineralization method.The bioretention pond comprises a super high-rise layer, a water storage layer, a covering layer, a filler layer and a dynamic drainage layer which are sequentially arranged from top to bottom, a spiral pipe is filled with the filler layer to form a spiral flow channel, and the spiral flow channel is filled with composite filler. According to the invention, the spiral flow channel type filler layer and the composite filler have a synergistic effect, so that the pollutant removal efficiency is improved; through the spiral flow channel composite filler and intelligent drainage design, efficient mineralization and low-cost treatment of rainwater are achieved. Operation data shows that the calcium ion concentration is increased by 35%, the COD removal rate is larger than or equal to 85%, the ammonia nitrogen removal rate is larger than or equal to 90%, the investment intensity is reduced by 63%, and the method is suitable for islands, urban green lands and other scenes.

The utility model belongs to the field of airplane cabin door drainage design, and particularly relates to a cabin door drainage mechanism. Comprising an on-door water collecting and draining piece arranged on a cabin door, and the on-door water collecting and draining piece is provided with a U-shaped groove and a water draining nozzle communicated with the U-shaped groove; an opening is formed in the door frame, a door frame upper tension spring support is installed above the opening of the door frame, and a door frame lower tension spring support is installed below the opening of the door frame. The door frame upper drainage groove is installed at an opening of the door frame through a door frame hinge, one end of the door frame upper drainage groove is in butt joint with the drainage nozzle, the other end of the door frame upper drainage groove extends out of the opening of the door frame, and an upper connecting hole and a lower connecting hole are formed in the door frame upper drainage groove. One end of the door frame upper tension spring is connected with the door frame upper tension spring support, and the other end is connected with an upper connecting hole of the door frame upper drainage groove; one end of the door frame lower tension spring is connected with the door frame lower tension spring support, and the other end is connected with the lower connecting hole of the door frame upper drainage groove. Drainage of the fuselage top blocking type cabin door can be achieved, abrasion is not prone to occurring, manual control is not needed, and the aging problem is avoided.

This invention discloses a bank protection reinforcement device for soil and water conservation, belonging to the field of water conservancy engineering technology. It includes a protective main body, with matching slots and blocks on both sides of the top for detachable horizontal splicing of multiple main bodies; the top also has two vertically adjustable support structures to adapt to uneven ground; the front end is a 60-degree slope with multiple through holes, into which fixing structures are movably inserted. The fixing structure includes a fixing column with a drainage channel, and the fixing column has a slot and drainage outlet communicating with the drainage channel, guiding soil moisture out while anchoring the bank protection. This invention, through modular splicing, adjustable support, and integrated anchoring and drainage design, solves the problems of poor adaptability, difficult maintenance, and high seepage pressure in traditional bank protection installations, significantly improving the stability and construction efficiency of bank protection.

The VRF air-conditioning system comprises a VRF air-conditioning system body, and the VRF air-conditioning system body comprises a water supply design platform, a drainage design platform, an air-conditioning engineering design platform, a heating and ventilation professional design platform and an air-conditioning energy-saving design platform; the water supply design platform is used for carrying out water supply design on water required by the VRF air conditioning system body; the drainage design platform is used for carrying out drainage design on water required by the VRF air conditioning system body; the air conditioner engineering design platform designs a cold source and a heat source of an air conditioner according to the load requirement of the VRF air conditioner system; the ventilation design platform is used for designing the ventilation quantity required by different mounting positions of the VRF air conditioning system; the ventilation design platform and the heating and ventilation professional platform are arranged to design the ventilation quantity required by different installation positions of the VRF air conditioning system and design wind prevention, air exhaust and fire protection related facilities, so that the ventilation quantity and the air conditioning load of the VRF air conditioning system meet the use requirements of people, and the practicability is high.

The utility model relates to the technical field of constructional engineering, and discloses a pipeline plate-penetrating fixing device for water supply and drainage design, which comprises a wall body, a mounting plate I is fixedly mounted at the top of the wall body, a mounting plate II is arranged at the bottom of the wall body, a sleeve is arranged between the mounting plate I and the mounting plate II, the sleeve is positioned in the wall body, and the mounting plate I and the mounting plate II are fixedly mounted on the wall body. And a pipeline is fixed in the sleeve. Through rotation of the second mounting plate, the control rod drives the moving rods to move along the moving grooves, the four sets of moving rods push the stabilizing blocks to clamp the outer wall of the pipeline, compared with a traditional device, through arrangement of the first mounting plate, the sleeve is fixed firstly, then through rotation of the second mounting plate, the stabilizing blocks clamp and stabilize the pipeline, and therefore the outer wall of the pipeline is fixed. And finally, the second mounting plate is fixed through a fastening bolt, it is guaranteed that when the thickness of the wall is large, the pipeline is not prone to shaking in the sleeve, and noise generated when the pipeline is transported is further reduced.

The present application relates to the field of water conservancy technology, and in particular to a dam safety monitoring method and system. The method comprises: obtaining historical rainfall data, topographic data, and the installation location of a monitoring device for a dam; inputting the historical rainfall data and topographic data into a fluid dynamics model to simulate the flow path of rainwater; predicting the monitoring accuracy of the monitoring device based on the simulated flow path, the drainage design parameters of the dam drainage structure, and the installation location of the monitoring device; updating the installation location of the monitoring device and / or updating the drainage design parameters of the dam drainage structure if the monitoring accuracy is determined to be less than an accuracy threshold; and performing safety monitoring of the dam based on the updated installation location of the monitoring device and / or the updated drainage design parameters of the dam drainage structure. The present application can improve the monitoring reliability of the monitoring device.

The present invention relates to the technical field of tunnel drainage design, and specifically to a tunnel drainage structure and design method based on a maintenance cycle, comprising: obtaining tunnel groundwater environmental parameters; calculating the crystallization deposition rate of groundwater in a tunnel longitudinal drainage pipe; calculating the crystallization deposition amount of the tunnel longitudinal drainage pipe within the maintenance cycle according to the crystallization deposition rate; comparing the crystallization deposition amount of the tunnel longitudinal drainage pipe within the maintenance cycle with the crystallization deposition standard, obtaining the tunnel drainage pipe parameter relationship, and designing the tunnel drainage pipe based on the parameter relationship; the beneficial effect of the present invention is that the method aims to construct a tunnel drainage system design method from the life cycle and maintainability dimensions of the drainage system, thereby enhancing the controllability of crystallization blockage of the tunnel drainage pipe.