1571 results about "Waterproofing" patented technology

Provided in the present invention is a construction method for a karst tunnel to extend through a karst cave. The construction method comprises the following steps: (1) excavation expansion and support for a karst cave; (2) dredging of the base of the karst cave, and backfilling; (3) inverted-arch and filling construction; (4) water-stop wall construction, and concrete backfilling on two sides; (5) initial support construction; (6) initial-support top backfilling and waterproof-layer construction; (7) secondary-lining waterproofing and drainage construction; (8) mounting and debugging of a water pressure monitoring system; and (9) implementation of a monitoring and early-warning scheme. The construction method is suitable for engineering in unfavorable geological conditions, for example, a water-rich karst tunnel extending through large underground karst caves, karst troughs and underground rivers. In the construction method, the operation difficulty of the steps is relatively low, the construction quality is controllable, there are few construction blind areas, and the safety of construction is relatively high; the initial runoff balance of karst cave underground water can be maintained, and thus the surrounding ecological environment can be protected to the maximum extent.

The invention provides a house waterproof maintenance system based on an intelligent detection and self-repairing technology, and the system comprises an intelligent sensing layer which is used for collecting multi-dimensional physical parameters of building waterproof key nodes in real time; the edge calculation analysis layer is used for performing fusion analysis and risk prediction on the perception data; the dynamic self-repairing execution layer is used for triggering a multi-stage repairing mechanism according to an analysis result; the cloud management layer is used for realizing visual management and control and strategy optimization of the whole system, and relates to the technical field of building waterproofing, the building state is monitored in real time through a multi-mode sensing network, water leakage risk prediction is realized in combination with an edge calculation algorithm, and collaborative repair of a microcapsule repair agent, a shape memory alloy grid and an electrodialysis module is triggered; the system remarkably improves the timeliness and reliability of waterproof maintenance, reduces the manual intervention cost, and is suitable for intelligent maintenance of residential buildings, industrial buildings and historical protection buildings.

The invention belongs to the technical field of waterproofing of constructional engineering, and provides a high-strength puncture-resistant railway tunnel waterproof and drainage board and a preparation method thereof.The high-strength puncture-resistant railway tunnel waterproof and drainage board is prepared from, by mass, 30-35 wt% of polyolefin elastomer POE, 40-45 wt% of high-density polyethylene and 20-30 wt% of antioxidant enhanced master batch; the antioxidant enhanced master batch is prepared from the following components in parts by weight: 6 to 8 parts of nano SiO2, 20 to 28 parts of EPDM-g-MS, 60 to 70 parts of linear low-density polyethylene, 1 to 3 parts of an antioxidant and 1 to 3 parts of an anti-ultraviolet agent. The waterproof and drainage board for the railway tunnel, provided by the invention, not only meets all properties specified in Q / CR562.3-2018, but also has more excellent tensile property and puncture resistance.

The invention relates to the technical field of design service, in particular to a roof waterproof structure intelligent design optimization system which comprises a node contour extraction module, a contact segment recognition module, a close boundary evaluation module, a disturbance area labeling module and a waterproof configuration reconstruction module. According to the invention, by extracting the direction vector change of the boundary point cloud sequence, the continuity and stability of the turning trend in the contour structure can be accurately obtained, the boundary of the roof structure can be identified, and the contact type of the boundary joint can be determined in combination with the direction change rate distribution of the contact surface, so that the boundary sealing state has quantitative index output; in addition, local positioning information of a fitting path and a structure defect can be provided, a node contour reconstruction path with an adjustment space is provided based on a pressing path continuity judgment and simulation edge shift strategy, and the adaptability of a node structure under the action of complex stress and the configuration optimization capability of the overall waterproof performance of a roof are improved.

The utility model discloses a structure for building deformation joint waterproof sealing and structure decay inhibition, which comprises a special waterproof sealing component, the special waterproof sealing component comprises a macromolecule waterproof sheet and a section bar sheet, and the section bar sheet is compounded on the macromolecule waterproof sheet. The special waterproof fixing and sealing component is formed by compositing the profile sheet on the polymer waterproof sheet, and is adhered and fixed on the upward or downward two sides of the building deformation joint, the two sides of the upstream face or the downstream face or the structural entities of one side of the plane and one side of the vertical face by matching with the base surface of the profile sheet through a special adhesive, so that the construction is convenient, the cost is low, and the construction efficiency is high. And meanwhile, the lap joint strength is effectively improved, the adaptability is wider, the durability is more reliable, construction, maintenance and overhaul are more convenient and easier, water can be prevented from being accumulated and diffused in the deformation joint structure, the effect of inhibiting structure decay can be achieved, a foundation is laid for achieving structure and construction self-waterproofing of a building, and meanwhile a guarantee is provided for high-quality development of the building.

The utility model relates to the technical field of load box waterproofing, in particular to a waterproof louver convenient to disassemble and assemble, which comprises a metal support frame and a plurality of rain-shielding blades formed by bending metal plates, the support frame comprises two support plates which are oppositely arranged, the rain-shielding blades are independently and detachably fixed between the two support plates, and the rain-shielding blades are fixed between the two support plates. Each rain shielding blade sequentially comprises a transverse extending part transversely extending to the middle of the supporting frame, a vertical extending part vertically arranged on the rear side of the supporting frame, an inclined part extending to the front side of the supporting frame and a rain shielding part vertically arranged on the front side of the supporting frame, and the vertical extending part of the previous rain shielding blade is aligned with the inclined part or the rain shielding part of the next rain shielding blade; a heat dissipation channel is reserved between the rain shielding blades, and an air outlet channel is reserved between the rain shielding parts of every two adjacent rain shielding blades. Compared with the prior art, when part of the rain shielding blades are damaged, the parts of the rain shielding blades can be correspondingly detached and replaced. In addition, the rain sheltering part and the transverse extending part play a double rain sheltering role, and rainwater is prevented from splashing into the load box from the louver.

The invention relates to the field of curtain walls, in particular to an innovative curtain wall with an expansion joint, through the arrangement of the expansion joint, the function requirement for expansion of building materials is met, and through the arrangement of a connecting assembly, a first stand column, a second stand column, a first expansion piece, a second expansion piece, a third expansion piece and a panel, the expansion joint is hidden on the rear side of the panel; uniformity of vertical faces of the curtain wall is guaranteed, the effect and quality of the curtain wall are improved, and the problems of heat preservation, heat insulation and expansion joint water leakage of an existing curtain wall are solved. By arranging the connecting assembly, the first stand column and the second stand column, the curtain wall structure is more stable. The problems that a curtain wall expansion joint is arranged on an outer vertical face, waterproof is difficult, and attractiveness, heat insulation and waterproof performance of a curtain wall are damaged are solved.

The utility model discloses a net column multi-layer composite repairing wall block for an old outer wall, and relates to the technical field of outer wall repairing. A steel mesh is arranged on the outer side wall of the first composite cement layer, a second composite cement layer is installed on the outer side wall of the steel mesh, a heat preservation structural body is arranged on the outer side wall of the second composite cement layer, a pressure-resistant plate is arranged on the outer side wall of the heat preservation structural body, a decorative coating is arranged on the outer side wall of the pressure-resistant plate, and a waterproof layer is arranged on the outer side wall of the decorative coating. The four threaded sleeve bodies are arranged at the four corners in the first composite cement layer, the steel mesh and the second composite cement layer correspondingly, and one end of each fixed column body is installed in the corresponding threaded sleeve body; according to the utility model, the thermal insulation structural body is adopted to improve the thermal insulation property after repairing, meanwhile, the pressure-resistant plate is adopted to improve the overall strength, the decorative coating is adopted to realize decoration, and the waterproof layer is adopted to improve the waterproof property; according to the repairing wall block, the original old wall body is connected through the fixing column body, the phenomenon that the repairing wall block falls off is not prone to occurring after connection, and the stability after installation can be improved.

The invention relates to a structure anti-seepage waterproof technology, in particular to a concrete structure anti-seepage performance analysis method considering a multi-physics field coupling effect, which comprises the following steps of: establishing a chemical-thermal-mechanical multi-field coupling model in a concrete hydration process by comprehensively considering various influence factors such as hydration heat, temperature, humidity and structure constraint and combining a phase field theory; solving is carried out through refined numerical simulation, and the concrete crack development and evolution process is obtained. The method has the advantages that multiple influence factors such as hydration heat, temperature, humidity and structural constraint are comprehensively considered by constructing the multi-factor coupled phase field model, the cracking risk of the concrete can be accurately estimated, and comprehensiveness and accuracy of impermeability performance evaluation are improved. By combining finite element simulation and based on a high-precision numerical simulation technology, the anti-permeability performance of the concrete structure under different working conditions can be predicted, and a scientific basis is provided for engineering design.

The invention discloses a waterproof and corrosion-resistant photoelectric composite cable, and belongs to the technical field of communication cables. The waterproof and corrosion-resistant photoelectric composite cable comprises a cable core composed of an optical unit and an electric unit, aramid yarn, an inner protective layer, a waterproof layer, an anti-corrosion layer and an outer sheath, the optical unit comprises an optical fiber and a protective sleeve outside the optical fiber, and the electric unit comprises a conductor and an insulating layer outside the conductor; the aramid yarn and the cable core are twisted in a spiral mode and wrapped by an inner protection layer in an extruded mode, the inner protection layer is wrapped by a water blocking layer, the water blocking layer is wrapped by an anti-corrosion layer, and the anti-corrosion layer is wrapped by an outer sheath. The inner protective layer is made of a waterproof high-temperature-resistant insulating polyurethane composite material; the outer sheath is made of a flame-retardant corrosion-resistant PUR composite material; the waterproof and corrosion-resistant photoelectric composite cable is simple in structure, has high strength and high toughness, has excellent waterproofness, corrosion resistance, aging resistance, high temperature resistance, wear resistance and flame retardance, and still keeps better use performance and longer service life in harsh environments such as underwater or underground.

The deepwater motor driving assembly comprises a motor and a speed reducer, the output end of the motor is connected with the input end of the speed reducer to transmit kinetic energy, the joint end of the motor is connected with the joint end of the speed reducer, the motor and the speed reducer jointly define a closed cavity, the closed cavity is connected with a first pressure compensation device, and the first pressure compensation device is connected with a second pressure compensation device. And oil liquid used for balancing external water pressure is filled in the valve body. The working environment of the deepwater motor driving assembly is underwater, if external water enters a closed cavity, the external water easily enters the motor and the speed reducer along a gap between the front side end face of the motor and the rear side end face of the speed reducer, and therefore equipment is damaged. According to the technical scheme disclosed by the invention, the oil liquid is injected into the closed cavity, and the external water pressure is balanced by using the oil liquid through pressurization of the pressure compensation device I, so that the possibility of water invasion is reduced to a certain extent, and the waterproof performance of equipment is improved.

The invention discloses a waterproof safety evaluation method and system for waterproof engineering, and belongs to the technical field of waterproofing of constructional engineering. According to the method, the waterproof safety level is comprehensively evaluated by determining an engineering structure defect quantitative index, setting a reference crack width Ws, measuring a waterproof material or engineering re-waterproof performance index Wm and calculating a waterproof safety coefficient K = Wm / Ws. The system evaluates grades based on the method, and selects corresponding waterproof materials and construction methods according to engineering importance, expected deformation and service life. According to the invention, concepts of'waterproof performance 'and'waterproof safety coefficient' are put forward for the first time, a quantitative evaluation system oriented to waterproof performance is established, the defects of heavy form and light actual effect of current specifications are effectively overcome, the transformation from'form compliance 'to'performance standard' is realized, the reliability, durability and economy of waterproof engineering are remarkably improved, and the method is suitable for popularization and application. And a scientific basis is provided for engineering design, material selection and acceptance.

The invention relates to a waterproof electric energy metering box, which relates to the technical field of power equipment protection, and comprises a main box body, and a waterproof device and a heat dissipation device matched with the main box body. The waterproof device comprises a waterproof box and an inner partition plate, a plurality of ventilation holes are formed in the waterproof box, a plurality of heat dissipation holes are formed in the side wall of the main box body, a water outlet is formed in the bottom of the waterproof box, and the bottom face of the waterproof box inclines towards the water outlet. The inner partition plate is located between the waterproof box and the main box body, gaps are formed between the inner partition plate and the waterproof box and between the inner partition plate and the main box body, and a plurality of communicating holes are formed in the inner partition plate; the heat dissipation device comprises a fan and a flow guide plate, the fan is connected with an air outlet pipe, an air outlet of the air outlet pipe is formed towards the bottom of the main box body, and an arc-shaped flow guide groove is formed in the flow guide plate; a plurality of air outlet holes are formed in the top of the main box body. According to the invention, effective water resistance is achieved, good heat dissipation is realized through reasonable airflow path and component cooperation, and related structures can be adjusted according to temperature and humidity conditions.

The invention relates to an outer wall facade self-adhesion waterproof coiled material continuous paving device and method.The outer wall facade self-adhesion waterproof coiled material continuous paving device comprises a guide rail frame, a moving frame, a driving mechanism, a film uncovering roller, a coiled material containing shaft and a rubber rolling roller, and the driving mechanism, the film uncovering roller and the coiled material containing shaft are all installed on the moving frame; the two ends of the rubber grinding roller are installed below the moving frame through the front-back adjusting mechanism, and the moving frame is arranged on the guide rail frame in a sleeving mode and can move up and down along the guide rail frame under driving of the driving mechanism. The film uncovering roller, the coiled material placing shaft and the rubber rolling roller are all horizontally arranged and can rotate around the self axis, the film uncovering roller, the coiled material placing shaft and the rubber rolling roller are sequentially arranged on the rear side of the guide rail frame from top to bottom at intervals, and the driving mechanism is further in transmission connection with the film uncovering roller and drives the film uncovering roller to rotate. The construction speed and construction efficiency of the outer wall facade waterproof coiled material can be improved, the construction quality of the outer wall facade waterproof coiled material is guaranteed, and the later water leakage hidden danger of a basement outer wall is reduced.

The invention belongs to the technical field of waterproof cutting lamps, and discloses a waterproof cutting lamp for stage atmosphere treatment, which comprises a base, the top end of the base is rotatably connected with a rotating seat, the interior of the rotating seat is rotatably connected with a waterproof cutting lamp body, and the outer side of the waterproof cutting lamp body is provided with a sealing cover through a screw. A waterproof groove is formed in the edge of the inner wall of the sealing cover, a sealing gasket is arranged on the inner wall of the waterproof groove, bonding pieces are bonded to the two sides of the sealing gasket and bonded to the interior of the sealing cover, a lifting strip is vertically and movably connected to the interior of the sealing cover, and a pressing plate is vertically and movably connected to the middle of the lifting strip. The two sides of the lifting strip are movably connected with side pressing plates in the inclined direction, the sealing cover is tightly matched with the waterproof cutting lamp body, the inner pressing plate, the side pressing plates and other components work cooperatively, water invasion is effectively prevented, it is ensured that equipment stably operates in the humid environment, the sealing effect is further enhanced through gas flowing and an extrusion mechanism, and the service life of the equipment is prolonged. And meanwhile, the waterproof reliability is improved by utilizing a gas expansion principle.

The invention relates to the technical field of on-line monitoring, in particular to a water level on-line detection method and system for water conservancy project waterproofing, and the method comprises the following steps: analyzing water level changes before and after an event, screening abnormal measurement points, recognizing an abnormal region in combination with an excitation signal, and adjusting transmission priority configuration according to data change characteristics. And judging a trend boundary to construct trend structure information, and analyzing a multi-cycle water level record to output a cycle gradient change result. According to the method, through combination of event attributes and the liquid level change relation, abnormal signal identification is optimized, data difference comparison before and after disturbance is utilized, the abnormal area judgment capacity is enhanced, jump trend capture is achieved in combination with the period slope change trend, and a dynamically-adjusted data uploading priority rule is constructed, so that the measuring point channel response has the real-time regulation and control capacity; the accuracy of trend continuation judgment is improved, the water level change direction and the periodic gradient offset state are subjected to association expression, and the dynamic tracking and grading response capability of water level monitoring is enhanced.

The invention relates to the technical field of toilet waterproofing, and provides a toilet waterproof structure and a construction method thereof.The toilet waterproof structure is arranged at the junction of a dry area finished surface and a wet area finished surface and sequentially comprises a threshold stone, a bonding layer arranged on the lower surface of the threshold stone and a waterproof layer arranged below the bonding layer from top to bottom; the upper surface of the threshold stone is flush with the upper surface of the dry area finished surface, the upper surface of the threshold stone is higher than the upper surface of the wet area finished surface, and the waterproof layer is laid on the upper surface of the structure base layer; the two sides of the waterproof layer extend to the positions below the dry area finished face and the wet area finished face respectively, and the waterproof layer comprises a first area arranged below the wet area finished face, a second area arranged at the junction of the threshold stone and the wet area finished face, a third area arranged below the threshold stone and a fourth area arranged below the dry area finished face. The waterproof structure has the beneficial effect that the waterproof effect of the doorsill of the toilet is improved.

The invention discloses a deep tunnel fabricated composite waterproof lining structure and a construction method thereof, and the construction method comprises the following steps: 1, carrying out tunnel excavation, and carrying out prefabrication and on-site assembly of duct pieces to form a primary support; 2, installing a water intercepting and draining device, and arranging a protective layer on the inner side of the water intercepting and draining device; 3, an anti-seepage film, an optical fiber waterproof layer, an inner waterproof layer and a high-performance concrete layer are sequentially arranged, and the anti-seepage film, the optical fiber waterproof layer, the inner waterproof layer and the shield segment layer are connected through the high-performance concrete layer; and fourthly, a secondary lining layer is constructed and molded, and lining is conducted through an integrated concrete pouring method till construction is completed. The technical problems that a traditional deep tunnel waterproof system is often difficult to effectively cope with challenges caused by high osmotic pressure, so that joints are poor in connection and prone to cracking, the waterproof capacity is reduced, tunnel diseases occur frequently, and the overall structure safety and the service life of a tunnel are affected are solved.

Described herein are fascia rail mounts that are attached to a structure, such as a deck. The disclosed fascia rail mounts include threaded rods that mate with holes in a railing post to allow the railing post to be attached to the structure using the threaded rods, the threaded rods extending from a side plate that is adjacent to a fascia beam of the structure. The disclosed rail mounts are attached to the structure prior to applying any layers designed to protect the structure such that the fascia rail mounts, including the threaded rods, receive the protective layers. A waterproof layer can be applied to the structure after the fascia rail mounts have been affixed so that the threaded rods of the fascia rail mounts extend past the waterproof layer without compromising the waterproofing of the structure. In other words, the waterproof layer forms a waterproof barrier even with the threaded rods extending from the fascia rail mounts through the waterproof layer.

The invention provides a design method of a waterproof rubber sealing gasket for a shield tunnel. The design method comprises the following steps: acquiring a plurality of material parameters and a plurality of boundary conditions of the rubber sealing gasket; on the basis of a pre-established working condition numerical analysis model, according to the multiple material parameters and the multiple boundary conditions of the rubber sealing gasket, experimental design parameters of the rubber sealing gasket are determined; verifying the experimental design parameters of the rubber sealing gasket based on a preset experimental scheme, and determining the design parameters of the rubber sealing gasket according to the verification result of the experimental design parameters of the rubber sealing gasket. According to the method, the experimental design parameters can be determined at least through the pre-established working condition numerical analysis model, the experimental design parameters are verified according to actual experiments, the design parameters of the rubber sealing gasket are determined, and the reliability of actual engineering application of the shield tunnel sealing gasket is improved.

The invention discloses a roof rigid waterproof construction method, and aims to provide a roof rigid waterproof construction method which is good in waterproof effect, high in seam waterproof treatment integrity and good in stability. According to the technical scheme, the roof rigid waterproof construction method is characterized in that before a waterproof layer is constructed, the roof is subjected to marginalization treatment firstly, that is, through a gentle slope support, the roof is subjected to seam waterproof treatment; according to the invention, the foundation frame is constructed and is fixed after being matched with the waterproof coating, so that effective structural support can be formed after the waterproof coating is poured, and the foundation frame and the waterproof coating mutually form a rigid structure, so that the axial tensile force or the radial tensile force can be well improved; the waterproof service life of the gap is guaranteed for a long time, and the method is suitable for the technical field of building construction.

An AI technology-based high-efficiency waterproof system comprises a reinforced protective layer (1), a self-adaptive waterproof layer (2), an intelligent sensing system (3) and an intelligent control system (4), and is characterized in that the reinforced protective layer (1) is a solvent type waterproof coating; the self-adaptive waterproof layer (2) comprises a plurality of microcapsules (5); the intelligent sensing system (3) is characterized in that a humidity sensor (7) is embedded into a self-adaptive waterproof layer; the intelligent control system (4) comprises an intelligent terminal (9) and a wireless communication control module (10), and remote monitoring and management of the waterproof system are achieved. The high-efficiency waterproof system based on the AI technology and the application method have the advantages that through AI intelligent control and advanced technical materials, high-efficiency waterproof protection of the building is achieved, the waterproof performance of the building is greatly improved, the waterproof position is maintained in time, the service life of the building is prolonged, the construction process is simplified, and the labor cost is reduced.

The utility model relates to the technical field of building waterproofing, and provides a waterproof roll pipe root additional layer cutting device which comprises a protective shell, the protective shell is of a hollow tubular structure, a bottom plate is arranged at the bottom of the protective shell, an adjusting assembly is arranged in the protective shell, and the adjusting assembly comprises an upper rotating ring and a lower rotating ring. The upper rotating ring and the lower rotating ring are coaxially arranged with the protective shell and can rotate around the axis of the protective shell; the cutter assembly is movably arranged between the upper rotating ring and the lower rotating ring, the cutter assembly comprises a cutter groove and a cutting knife, the cutting knife is placed in the cutter groove, and a blade of the cutting knife vertically faces the bottom plate; and the pressing plate is arranged above the cutter assembly and used for applying pressure to the cutter assembly, the pressing plate is connected with the bottom plate through a spring, and the spring is used for resetting after the pressing plate is pressed downwards. According to the pipe root cutting device, the waterproof coiled material at the pipe root part can be efficiently cut in a regular shape, the pipe root cutting device can be suitable for pipes with different diameters, and the practicability of the device is improved.

The utility model discloses an underground engineering grouting leaking stoppage structure which comprises a plurality of grouting holes which are arranged downwards, the grouting holes penetrate through a basement bottom plate and a cushion layer downwards in sequence till a soil body, grouting pipes are installed in the grouting holes, composite grout is injected into the grouting pipes, and the composite grout permeates into the space between the soil body and the cushion layer to form a stone body. And a high-strength concrete hole sealing body is poured at the top of the grouting hole. The grouting holes are formed, the composite grout is poured into the grouting holes, the composite grout permeates into the space between the soil body and the cushion layer to form the stone body, and the high-strength concrete hole sealing bodies are arranged at the tops of the grouting holes, so that the problem that water seepage or water gushing occurs due to the fact that the water level of underground engineering is increased and a concrete structure is damaged by water pressure can be well solved. The composite slurry is uniformly injected into a damaged structure and a soil body, so that the composite slurry and the soil body form a consolidated body-stone body with high bearing capacity and good waterproofness, and the phenomenon of water seepage or water gushing caused by the fact that the concrete structure is not damaged by underground water is avoided.

The present invention relates to a method for installing a multi-level under-hanging steel structure, comprising the following steps: S1, installation of the lower chord steel beam of the theater auditorium truss: during the installation of the lower chord steel beam of the theater auditorium truss, the steel beam is precisely aligned and fixed to ensure installation accuracy and stability, and the structure is adjusted to meet the requirements of the specification through horizontal and vertical deviation inspections, and the reinforcement and installation process of the beam is comprehensively inspected. The present invention enhances structural stability by precisely hoisting and installing the theater complex building, meets protection standards such as anti-corrosion, insulation and waterproofing, handles structural joints, ensures the continuity and stability of the overall structure, conducts stability inspections, and promptly repairs or reinforces problems. Through comprehensive review and testing methods, it is ensured that the installation and connection meet the design and specification requirements, enhances the operability and economic benefits of the project, protects the civil structure, improves installation accuracy, reduces maintenance costs, and improves the reliability and safety of the overall project.

The invention belongs to the technical field of tunnel engineering construction, and particularly relates to a tunnel waterproof plate rapid reconstruction construction method which comprises the steps that after surface pretreatment, a buffer layer and a waterproof plate are laid through an interface rapid attaching method, and efficient connection of the waterproof plate is achieved through a high-frequency energy fusion method; and repairing the damaged part in combination with a directional pressure filling method. According to the method, the construction efficiency can be effectively improved, the waterproof quality is guaranteed, the repairing period is shortened, disturbance of construction to surrounding rock is reduced, the method is suitable for tunnel waterproof engineering under various complex geological conditions, and an innovative solution is provided for tunnel waterproof construction and maintenance.

The invention relates to the field of water conservancy construction waterproofing, and discloses a water conservancy project construction water stopping device which comprises a water stopping base frame. A water floating water stopping mechanism; the water floating water stopping mechanism is arranged on the front side of the water stopping base frame, and the water floating water stopping mechanism is used for automatically stopping water after the water level rises; the linkage water level prompting mechanism is triggered while the water stopping mechanism acts, the floating ball drives the water level prompting rod to move upwards along with rising of the water level, when the water level is high, the water level prompting rod moves upwards to the upper side of the water level prompting plate, and water conservancy constructors observe the position relation between the water level prompting rod and the water level prompting plate, so that the water level prompting rod can prompt the water level. The current water level condition can be visually known in real time, corresponding measures such as drainage strengthening and construction scheme adjusting can be conveniently taken in time, construction safety is ensured, the linkage prompting mechanism organically combines the water stopping action and water level monitoring, the timeliness and accuracy of water level monitoring are improved, and the water level monitoring efficiency is improved. And a more reliable guarantee is provided for safe construction of a water conservancy project.

The invention belongs to the technical field of building waterproofing, and discloses a roof waterproof construction method and a roof waterproof structure. The roof waterproof construction method comprises the steps that a first waterproof layer and a heat preservation layer are sequentially laid on a reinforced concrete floor; a slope making layer is laid on the heat preservation layer, the height from the center position of the heat preservation layer to the concrete blocks on the periphery is gradually reduced, and a layer of fine aggregate concrete with the thickness of 20-40 mm is laid on the concrete blocks; a second waterproof layer is laid on the slope making layer, and the edge of the second waterproof layer vertically extends upwards along the parapet wall; an isolation layer and a first protection layer are sequentially laid on the second waterproof layer, and the head closing part of the second waterproof layer is higher than the upper surface of the first protection layer. The roof waterproof structure is built through the roof waterproof construction method, roof cracking caused by frost heaving of the slope making layer at the low temperature is avoided, the waterproof effect of the roof is improved, the slope making layer is machined through broken concrete blocks and fine aggregate concrete, and the cost is reduced.

The invention relates to the technical field of building materials, and discloses a self-repairing microcapsule-based composite waterproof material and a preparation method thereof, and the self-repairing microcapsule-based composite waterproof material comprises the following components by weight: 60-80 parts of modified organic silicon resin, 5-15 parts of nano clay (modified montmorillonite), 3-8 parts of a self-repairing microcapsule, 2-5 parts of a water-based cross-linking agent, and 0.5-2 parts of a dispersing aid. Stress generated by settlement and temperature change of a building structure can be effectively resisted, and cracks are reduced fundamentally; meanwhile, the material still keeps flexibility at the low temperature of-30 DEG C (without cracks when bent), and the technical bottleneck that a traditional material is prone to embrittlement in a cold region is broken through; more importantly, the 24-hour self-repairing rate is up to 92%, self-healing of cracks can be achieved without manual intervention, the service life of waterproof engineering is prolonged to more than two times that of a traditional material, the full-life-cycle maintenance cost is remarkably reduced, and a long-acting and reliable solution is provided for the field of building waterproofing.

According to the dual-waterproof self-cleaning lens and the camera module applying the same, the piezoelectric ceramic is integrated below the front-end lens of the lens, so that the piezoelectric material can be powered by the conductive element to realize high-frequency vibration, and the front-end lens is driven to clean dirt on the surface of the lens; the peripheral side and the bottom of the front-end lens are respectively provided with a sealing structure, double waterproofing can be achieved structurally, the vibration performance of the piezoelectric ceramic is fully released, compared with a traditional camera module, the piezoelectric ceramic is arranged in the lens, the ultrasonic cleaning function is added, the structure is simple, and the application range is wide. The lens module is beneficial to miniaturization, is suitable for AA, thread and integrated lenses, and can clean rainwater and dust.