46results about "Arch dams" patented technology

The invention discloses an alpine region-based double-curvature arch dam aeration ice-melting anti-icing device, and relates to the technical field of anti-icing, the alpine region-based double-curvature arch dam aeration ice-melting anti-icing device comprises a double-curvature arch dam body, a lifting structure, an aeration anti-icing structure, a PLC controller, a temperature sensor and a liquid level sensor are arranged on the outer convex curved surface side of the double-curvature arch dam body, and the aeration anti-icing structure comprises a plurality of fourth connecting pipes; the bottoms of the outer sides of the fourth connecting pipes are fixedly connected with a plurality of pressure release valves, and the bottoms of the pressure release valves are fixedly connected with bubble generators, so that along with the rise of the internal air pressure of the fourth connecting pipes, the air flow bursts through the pressure release valves and then is discharged through the bubble generators, and a large number of bubbles are generated; and in the process that the bubbles move towards the water surface, the water surface is stirred, the water surface is prevented from being frozen, the anti-freezing effect on the upstream side of the hyperbolic arch dam body is comprehensively achieved, and damage to the structure of the upstream side of the hyperbolic arch dam body caused by freezing is reduced.

The utility model discloses a hexagonal prefabricated composite heat preservation template, which belongs to the technical field of heat preservation templates, and is characterized in that the whole template unit is in a regular hexagon shape, and comprises a panel, a support grid and a heat preservation structure; the supporting grid is arranged on the inner side face of the panel and comprises dense rib beams which are arranged in a staggered mode. The supporting grid comprises six triangular grids which are arranged at intervals; the inner ends of the middle multi-ribbed beams intersect at one point, and the outer ends of the middle multi-ribbed beams are connected with the peripheral multi-ribbed beams; the heat preservation structure makes contact with the dam body and comprises a heat preservation plate and a heat preservation layer. The insulation board is filled in the support grid; the outer side face of the dense rib beam is coated with the heat preservation layer. According to the utility model, the traditional integrated insulation board is divided into a plurality of small blocks which are further positioned through the supporting grids, so that the connection strength between the insulation board and the panel can be enhanced, and the stripping risk between the insulation board and the panel is reduced; the hexagonal structural design is adopted, automatic alignment can be achieved under the action of gravity during splicing, the field splicing difficulty is reduced, and the construction efficiency is improved.

The invention relates to the technical field of dam body paving construction, in particular to roller compacted concrete dam paving forming transverse joint construction equipment and method. The equipment comprises a joint cutting plate for cutting a transverse joint and an auxiliary positioning device for performing construction positioning on the joint cutting plate, the auxiliary positioning device comprises a base frame; the rectangular frame is vertically mounted on the base frame in a sliding manner; the bearing positioning frame comprises two positioning plates which are horizontally and oppositely mounted in the rectangular frame in a sliding manner; the two lower pressing frames are assembled on the two positioning plates in a one-to-one correspondence manner; the elastic supporting frames are connected between the base frame and the rectangular frame; the at least one limiting frame is assembled on the base frame and is positioned below the rectangular frame; according to the equipment provided by the invention, the auxiliary positioning device is matched with the joint-cutting plate, so that the stability and continuity of pressing-in joint-cutting guiding are greatly improved, the construction deformation of the joint-cutting plate is also avoided to the greatest extent, and the reuse period of the joint-cutting plate can be prolonged.

The invention discloses a high-pressure air flow uniform disturbance device for an anti-freezing arch dam in an alpine region, and relates to the technical field of anti-freezing of arch dams, the high-pressure air flow uniform disturbance device comprises a fixing frame, sleeves are rotatably connected to the interiors of a plurality of supports, supporting plates are fixedly connected to the two sides of the bottoms of the supports, and connecting plates are fixedly connected to the bottom ends of the two supporting plates; a threaded rod is slidably connected to the interior of the sleeve, a rotating plate is rotatably connected to the bottom end of the threaded rod, a supporting plate is fixedly connected to the bottom of the rotating plate, a rotating pipe is rotatably connected to the interior of the supporting plate, a spray head is fixedly connected to the top end of the rotating pipe, and a plurality of blades are fixedly connected to the outer side of the spray head in an annular array mode; according to the high-pressure air flow uniform disturbance device of the anti-freezing arch dam in the alpine region, turbulent flow is formed in water, the disturbance effect of high-pressure air flow is further improved, the anti-freezing effect of the water surface is improved, the water surface is stirred through the rubber elastic strips, water flow near the water surface is turned over, and the anti-freezing effect is improved.

The invention belongs to the technical field of water conservancy projects, and discloses an extra-high arch dam bank slope dam section concrete first bin high lift layer construction method which comprises the following steps: step 1, determining dam concrete construction layering, step 2, establishing a template support model, step 3, carrying out stress checking calculation and the like. According to the extra-high arch dam bank slope dam section concrete first bin high lift layer construction method, PKPM structural calculation software is combined with the structural form of a dam, the distance from an upstream excavation face is combined, a model is established for structural stress and stability analysis, high lift layer construction is achieved, the highest lift layer height is large, multi-bin parallel one-time pouring is achieved, the pressure of a standby bin is relieved, and the construction efficiency is improved. The construction efficiency is improved. According to the ultrahigh arch dam bank slope dam section concrete first bin high rising layer construction method, the pouring height and quality of each layer can be effectively controlled, the uniformity and compactness of concrete are ensured, and the construction precision of the whole structure is improved.

The invention discloses a construction method for multi-layer three-dimensional tracking full replacement treatment of a soft foundation, and relates to the technical field of hydraulic engineering construction. The construction method comprises the following steps that a soft interlayer is decomposed into a plurality of soft rock stratums which are connected in sequence in the vertical direction; selecting a plurality of to-be-processed layers with processing conditions; processing is started from a certain to-be-processed layer with conditions, and the to-be-processed layer is decomposed into a plurality of replacement adits which are connected in sequence; when the replacement adit on the outermost edge is excavated to the preset depth, concrete backfilling is conducted on the excavated part; the remaining replacement adit is sequentially subjected to excavation and concrete backfilling; the next to-be-treated layer with the conditions is selected for excavation and concrete backfilling till concrete replacement of all the to-be-treated layers is completed; and finally, the remaining soft rock stratum is excavated, and concrete backfilling is carried out, so that concrete full replacement of the soft rock stratum is completed. The soft foundation can be completely replaced by a backfilled concrete structure, and potential safety hazards caused by replacement of part of the soft foundation are avoided.

The present invention discloses a high-pressure airflow uniform disturbance device for anti-freezing ice arch dams in high-altitude cold areas, which relates to the technical field of anti-freezing ice for arch dams, and comprises a fixing frame, wherein a plurality of the brackets are rotatably connected to sleeves inside, support plates are fixedly connected on both sides of the bottom of the brackets, and the bottom ends of the two support plates are fixedly connected to connecting plates, a threaded rod is slidably connected inside the sleeve, the bottom end of the threaded rod is rotatably connected to a rotating plate, the bottom of the rotating plate is fixedly connected to a support plate, the support plate is rotatably connected to a rotating tube, the top of the rotating tube is fixedly connected to a nozzle, and a plurality of blades are fixedly connected to the outside of the nozzle in a ring array. The high-pressure airflow uniform disturbance device for anti-freezing ice arch dams in high-altitude cold areas forms turbulence in water, further enhances the disturbance effect of the high-pressure airflow, thereby improving the anti-icing effect of the water surface, causes the rubber elastic strip to stir the water surface, and causes the water flow near the water surface to surge, thereby improving the anti-icing effect.

The invention relates to a high arch dam overhanging body customized concrete formwork and an installation method thereof.The high arch dam overhanging body customized concrete formwork comprises a body, a protruding structure and a groove structure, and the body is provided with a first end and a second end which are arranged in the length direction; the convex structure is arranged at the first end; the groove structure is arranged at the second end; every two adjacent high arch dam overhanging body customized concrete formworks are configured to be arranged in the length direction, and the protruding structure of one high arch dam overhanging body customized concrete formwork can be connected to the groove structure of the other high arch dam overhanging body customized concrete formwork in a clamped mode. The bulge structures and the groove structures are arranged on the body of the customized concrete formwork for the overhanging body of the high arch dam, so that when concrete is poured at the overhanging body part of the high arch dam, the formwork can be quickly mounted and positioned, the mounting efficiency and the construction progress are accelerated, the formwork can be reinforced as soon as possible, the occupied pressure of formwork mounting on a truck crane is reduced, and the construction period is shortened. The construction cost is reduced.

According to the connecting structure of the arch dam crest and the portal crane platform, a foundation pit is arranged on the side, close to the portal crane platform, of the arch dam crest, an overturning platform is installed in the foundation pit in an overturning mode, an overturning device is connected with the overturning platform, and the overturning device can overturn the overturning platform from the state that the overturning platform is flush with the arch dam crest to the inclined state that the arch dam crest is connected with the portal crane platform. The overturning platform is installed in the foundation pit in an overturning mode, the overturning platform can be overturned from the state that the overturning platform is flush with the arch dam crest to the inclined state that the arch dam crest is connected with the portal crane platform through the overturning device, and the overturning platform can also be overturned from the inclined state that the arch dam crest is connected with the portal crane platform to the state that the overturning platform is flush with the arch dam crest. Therefore, the automobile can enter the portal crane platform, the material transfer efficiency is improved, and the safety risk is reduced.

The present invention relates to a radial excavation arch end structure connecting an arch dam with bedrock and an excavation method thereof; the structure comprises an arch dam and arch seats arranged at two arch ends of the arch dam; a central contact point formed by the intersection of the arch dam center line of the arch dam and the arch seats at both ends; an upstream contact point formed by the intersection of the upstream side of the arch dam and the arch seats at both ends, and a contact surface formed between the arch dam and the arch seat between the central contact point and the upstream contact point is a first arc surface; the first arc surface is tangent to the radial line of the arch dam center line; the contact surface of the arch seat on the downstream side of the arch dam is extended downward, and the end point of the extension is connected to the thickened starting point of the downstream side of the arch dam to form a second arc surface; the second arc surface intersects with the radial line of the arch dam center line. The arch end upstream of the arch ring center line of the present invention adopts an arc shape, which is not only conducive to the force transmission of the arch end, but also forms a radial excavation, which is conducive to reducing the amount of rock excavation on the upstream face of the dam body.

The present invention provides a method for monitoring the temperature of concrete at the bottom hole of an arch dam in a high temperature season, comprising: step 1, selecting a location for burying optical fibers; step 2, designing a temperature gradient monitoring test plan; step 3, selecting a distributed optical fiber warehouse layout plan that meets the actual situation of the arch dam bottom hole casting warehouse, and designing a warehouse surface optical fiber layout plan; step 4, burying optical fibers according to the test plan; step 5, determining the location of the temperature gradient monitoring test measurement points and the location of the warehouse fiber measurement points; step 6, after obtaining multiple groups of data through the temperature gradient monitoring test, combining the maximum temperature and cooling rate of the concrete, analyzing the monitoring data rules of the bottom plate and the side wall, and evaluating the temperature control effect and measures of the bottom hole. The monitoring method can monitor the concrete temperature and temperature change trend of the bottom hole of the arch dam in real time during the high temperature season, provide a reference for the formulation of concrete temperature control measures, and effectively prevent the cracking of the concrete at the bottom hole of the arch dam.

The present invention discloses a construction passage structure and a construction method for the bottom gallery of a large arch dam. The arch dam is provided with a grouting gallery at the bottom layer of the arch dam and a monitoring branch gallery connected to the grouting gallery. The construction passage extends from the end of the monitoring branch gallery towards the downstream dam surface of the arch dam to form a reserved gallery as the construction passage for the bottom gallery of the arch dam. Among them: the bottom plates at both ends of the reserved gallery are smoothly connected to the elevation of the monitoring branch gallery and the bottom plate of the outer water cushion pond on the dam surface; a composite rubber water stop is arranged downstream of the intersection of the reserved gallery and the monitoring branch gallery, and a wide flat copper water stop is arranged upstream near the downstream dam surface of the reserved gallery. The passage structure of the gallery in the present invention effectively forms a passage for the bottom grouting gallery during grouting, improving the construction efficiency of grouting; by adopting the construction passage set in the present invention, the cost is relatively low, the passage is formed relatively quickly, and it can be implemented and completed synchronously with the bottom grouting gallery and the monitoring branch gallery.

The utility model relates to the technical field of roller compacted concrete double-curvature arch dam construction, in particular to a roller compacted concrete double-curvature arch dam two-way adjustable turning and lifting formwork which comprises a bottom plate, fixing plates are symmetrically connected to the top of the bottom plate, the fixing plates are connected with a lifting plate through a vertical adjusting mechanism, and the lifting plate is connected with the bottom plate. The lifting plate is connected with a turning and lifting template through a transverse adjusting mechanism, and supporting mechanisms are arranged on the two sides of the fixing plate. When the device is used, the first motor controls the lifting plate and the turning and lifting template to move vertically through the two vertical adjusting screw rods, the two belt wheels and the belt, and the second motor controls the box moving plate to control the turning and lifting template to move transversely through the transverse adjusting screw rods. According to the double-curvature arch dam overturning and lifting device, the overturning and lifting formwork is moved and adjusted in the vertical direction and the transverse direction, adjustment is easy and convenient, and subsequent double-curvature arch dam concrete construction is further facilitated through the overturning and lifting formwork capable of being adjusted in the two directions.

The application discloses a hyperbolic arch dam aeration ice-melting and anti-icing equipment based on an alpine region, and relates to the technical field of anti-icing. The hyperbolic arch dam body is provided with a lifting structure, an aeration anti-icing structure, a PLC controller, a temperature sensor and a liquid level sensor on the convex curved surface side. The aeration anti-icing structure comprises a plurality of connecting pipes four, and a plurality of pressure relief valves are fixedly connected to the bottom of the outer side of each connecting pipe four. The bottom of the pressure relief valve is fixedly connected with a bubble generator. With the increase of the internal air pressure of the connecting pipe four, the airflow finally breaks through the pressure relief valve and is discharged through the bubble generator, a large number of bubbles are generated, the bubbles agitate the water surface during movement towards the water surface, ice formation on the water surface is avoided, the effect of preventing freezing on the water-approaching side of the hyperbolic arch dam body is comprehensive, and the damage of ice formation to the structure of the water-approaching side of the hyperbolic arch dam body is reduced.

The present invention relates to the technical field of dam paving construction, and specifically proposes a roller-compacted concrete dam paving forming transverse seam construction equipment and method; the equipment includes a cutting plate for cutting transverse seams and an auxiliary positioning device for positioning the cutting plate during construction; the auxiliary positioning device includes: a base frame; a rectangular frame, which is vertically slidably installed on the base frame; a supporting positioning frame, including two positioning plates horizontally relatively slidably installed in the rectangular frame; two lower pressing frames, which are assembled on the two positioning plates in a one-to-one correspondence; a plurality of elastic support frames, which are connected between the base frame and the rectangular frame; and at least one limit frame, which is assembled on the base frame and is located below the rectangular frame; the cooperation between the auxiliary positioning device and the cutting plate in the equipment provided by the present invention greatly provides the stability and continuity of the pressed-in cutting guide, and also avoids the construction deformation of the cutting plate to the greatest extent, which can increase the reuse cycle of the cutting plate.

The invention relates to the technical field of steel structure dams, and in particular to a reverse construction system for a steel structure dam, which overcomes the problem that a cofferdam must be built in advance before the dam body can be constructed, shortens the construction process of slope piles and dam foundation piles, and no longer requires the construction of a cap in advance, and does not require all dam foundation piles to be driven in before subsequent construction. A construction platform can be formed under the cooperation of slope piles, dam foundation piles and bridge trusses, and the construction of the steel structure dam from the middle is realized through the construction platform. The upward construction on the construction platform is the positive construction of the steel structure dam, and the downward construction on the construction platform is the reverse construction. After the construction of the construction platform is completed, it can be used as a platform to construct the lower truss of the dam body. After the construction of the lower truss of the dam body is completed, a setting machine constructs the upper truss of the dam body upward through the construction platform, thereby realizing the reverse construction of the entire steel structure dam.

The application discloses a water cushion pond structure for preventing impact on a side slope, which is provided with a horse path, water cushion pond side slopes, a water cushion pond bottom plate and an excavation impact area. A plurality of horse paths and a plurality of water cushion pond side slopes are alternately connected in sequence, and the water cushion pond bottom plate is located between the lowermost water cushion pond side slopes. The excavation impact area is formed at a specified and preset position of the horse path, the water cushion pond side slopes and the water cushion pond bottom plate, the excavation impact area is cut off from the horse path and the water cushion pond side slopes, and the bottom of the excavation impact area is connected with the water cushion pond bottom plate. The falling point area of the pick-up water tongue is located in the excavation impact area, and the excavation impact area is used for receiving the pick-up water tongue formed when the dam body surface hole picks up and discharges flood. The application can ensure that the water cushion pond side slopes and the horse path are not impacted while the engineering quantity is not greatly increased, thereby enhancing the structural stability of the whole water cushion pond and effectively increasing the energy dissipation rate of the pick-up water body.

The utility model relates to an arch dam overhanging body assembly and an arch dam overhanging body structure. The arch dam overhanging body assembly comprises an overhanging body prefabricated formwork and a truss. The inverted suspension prefabricated formwork extends in the first direction. The truss is arranged on the side, in the second direction, of the inverted suspension body prefabricated formwork and connected to the inverted suspension body prefabricated formwork. Wherein the inverted suspension body prefabricated formwork comprises a first embedding part and a second embedding part, and the first embedding part and the second embedding part are arranged at the two ends, in the first direction, of the inverted suspension body prefabricated formwork correspondingly; in the first state, in every two adjacent arch dam overhanging body assemblies, the first embedding part of one arch dam overhanging body assembly is embedded with the second embedding part of the other arch dam overhanging body assembly. Wherein the first direction intersects with the second direction. According to the arch dam overhanging body assembly, the construction difficulty of the multiple arch dam overhanging body assemblies in the connecting process can be reduced.

The invention provides an arch dam intelligent regulation and control assembly type heat preservation formwork and a construction method.The heat preservation formwork structure is of a multi-layer structure and comprises a concrete heat preservation formwork layer located on the inner layer, and a buffer air cushion layer, a water heating layer, a drainage layer and a protective surface layer are sequentially arranged on the outer layer of the concrete heat preservation formwork layer; the protective surface layer is connected with the concrete heat preservation formwork layer through a fixing steel support, and the concrete heat preservation formwork layer is connected with the dam body through embedded bars penetrating through anchoring holes. Rapid concrete pouring is achieved, the internal and external temperature difference of arch dam concrete in the construction period and the operation period is reduced, the destructive effect of ice thrust and ice pulling force is reduced, the construction period is effectively shortened, concrete quality is guaranteed, and arch dam safety is guaranteed.

The invention belongs to the technical field of arch dam monitoring, and particularly provides an arch dam vertical line accurate horizontal displacement calculation method which comprises the steps that the radial azimuth angle of each vertical line measuring point is calculated; determining a rotation angle of a local coordinate system of adjacent vertical line measuring points; obtaining a rotation matrix according to the rotation angle obtained in the step 2; and converting the displacement of the previous measuring point to the local coordinate system of the current measuring point, and then performing algebraic superposition to obtain a monitoring result of the horizontal displacement of the to-be-measured point. According to the method, the horizontal displacement observed quantity of the previous elevation vertical line measuring point is converted to the current local coordinate system according to the rotation angle of the current measuring point local coordinate system, then the horizontal displacement observed value of the current measuring point is calculated through algebraic superposition, and accurate calculation of the displacement of the vertical line measuring point of the arch dam is achieved.

The invention discloses a prefabricated top arch section drainage structure of a dam drainage gallery, relates to the field of water conservancy projects, and solves the problems that an existing prefabricated top arch section is large in mass and inconvenient to prepare, transport and construct, and drainage holes are prone to failure. Comprising an arc-shaped plate forming the top of the drainage gallery and supporting plates connected with the four edges of the arc-shaped plate and arranged in the vertical direction, the top face of the arc-shaped plate and the four supporting plates define a filtering cavity with the top open, and the total mass of the prefabricated top arch section can be reduced easily; the filtering cavity is filled with water-permeable filler, the top of the water-permeable filler is covered with reverse filtering geotechnical cloth, the arc-shaped plate is provided with drainage holes communicated with the filtering cavity, the water-permeable filler can transmit loads on the upper portion to the arc-shaped plate in a dispersed mode, and concrete is directly cast in place above the reverse filtering geotechnical cloth. Seepage water of cast-in-place concrete can directly permeate into the filtering cavity through the reverse filtering geotechnical cloth and then is discharged from the drainage holes of the arc-shaped plate.

The invention discloses an extra-high arch dam diversion tunnel structure and an overhauling method of an extra-high arch dam diversion tunnel lock chamber, relates to the field of water conservancy and hydropower engineering, and solves the problem that the existing diversion tunnel structure cannot overhaul the diversion tunnel lock chamber under the condition of high flow in a dry season. Comprising a diversion tunnel main hole and an ecological bypass hole, an outlet of the ecological bypass hole is connected with the diversion tunnel main hole, a diversion tunnel lock chamber is arranged at an inlet of the diversion tunnel main hole, a middle separation pier is further arranged at the inlet of the diversion tunnel main hole and divides the diversion tunnel main hole into a hole A and a hole B, and a front diversion gate and a rear diversion gate are arranged in each of the hole A and the hole B; a bypass hole lock chamber is arranged at an inlet of the ecological bypass hole, a front bypass gate and a rear bypass gate are arranged in the bypass hole lock chamber, and the front bypass gate is an arc-shaped gate. According to the overhauling method of the ultrahigh arch dam diversion tunnel lock chamber, a tunnel A and a tunnel B are alternately repaired, and an ecological bypass tunnel and the tunnel A or the tunnel B which is not in the repairing period serve as overflowing channels.

The invention relates to the technical field of humanoid vibration robots, solves the technical problem that the prior art is difficult to adapt to concrete vibration construction operation in a complex unstructured scene, and particularly relates to a double-arm cooperation method of a humanoid vibration robot for unstructured environment operation. The method comprises the following steps: fusing collected multi-source sensor data, constructing an operation environment map, and identifying a target operation area and a target vibration operation position; a generalized comprehensive risk index is constructed to dynamically grade a target operation area, a cooperative motion track of the double mechanical arms is planned, a control instruction is generated, and the crawler-type mobile vehicle body and the double six-degree-of-freedom cooperative mechanical arms are controlled to complete concrete vibrating operation; when obstacle interference exists in an operation area, the double six-degree-of-freedom cooperative mechanical arms complete vibration operation in a cooperative mode. The concrete vibrating device can adapt to complex and changeable unstructured construction environments, and the flexibility, the collaboration and the safety of concrete vibrating operation are improved.

The present invention relates to the technical field of dam deformation monitoring, and discloses a method and system for measuring the horizontal displacement of a concrete arch dam, including: obtaining the plane control measurement data of a dam corridor in a concrete arch dam, setting pairs of measurement control points at set intervals on the side walls on both sides of the concrete arch dam corridor according to the control measurement point arrangement plan; selecting the monitoring point of the rear bridge of the original concrete arch dam monitoring system as the starting point of the control measurement closed loop to obtain plane control measurement data; performing adjustment and solution on the plane control measurement data to obtain the three-dimensional spatial geographic coordinates of the control measurement point; using the control point target ball prism target to convert the relative coordinates of the three-dimensional laser scanning point cloud data into the three-dimensional spatial geographic coordinates; and obtaining the horizontal displacement data of the concrete arch dam through the deformation analysis strategy of the point cloud to the point cloud. The present invention can realize the technical transformation of the arch dam horizontal displacement observation from the traditional discrete point observation to the three-dimensional overall observation.

The application provides an arch dam back traffic structure, the arch dam is formed by pouring concrete, and the arch dam back traffic structure comprises: a plurality of I-beam, which are arranged at a preset distance along the circumference of the arch dam curved surface, each I-beam is embedded in the arch dam body at a preset elevation along the radial direction of the arch dam, a part of the length of each I-beam is embedded in the dam body, and the remaining part is in overhang, and the embedded length of each I-beam is greater than or equal to the overhang length; at least two pull rod steels are fixedly connected to the embedded part of each I-beam, the two pull rod steels are arranged on both sides of the I-beam, one end of each pull rod steel is connected to the I-beam, and the other end of each pull rod steel is connected to the exposed steel on the concrete pouring bin surface; a patterned steel plate is laid on the embedded I-beams, and the lower surface of the patterned steel plate is welded to the I-beams. The structure has the advantages of good appearance quality, safety and reliability, and convenient construction.

The utility model discloses an arch dam flood discharge energy dissipation structure which comprises a dam body, an overflow surface hole and a flood discharge middle hole are formed in the dam body, a plunge pool and an auxiliary dam are arranged on the downstream of the dam, the overflow surface hole comprises side walls and a bottom plate arranged between the two side walls, and the tail end of the bottom plate is located on the inner sides of the tail ends of the side walls. A first energy dissipater located in the overflow surface hole is arranged at the tail end of an outlet of the overflow surface hole, and a second energy dissipater is arranged at the tail end of an outlet of the flood discharge middle hole. A lifting area is arranged on the upstream side of the plunge pool, and the horizontal length of the lifting area does not exceed the falling point position of the overflow surface hole nappe; the height of the lifting area does not exceed half of the height of the auxiliary dam, and a deep water area is formed between the lifting area and the auxiliary dam. According to the special-shaped plunge pool, the problem that the hydrodynamic pressure intensity of impact of the plunge pool bottom plate is too large due to the fact that water enters the surface middle hole nappes in a concentrated mode is solved, a more complete resistance body can be reserved on the downstream side of the dam body, the stability of the dam body is enhanced, and meanwhile engineering investment is reduced.

This invention provides a device and construction method for the first-phase direct burial construction of inclined gate slots in hydropower station arch dams. The device includes a ladder with several operating platforms and ladders connecting the platforms. The lower end of the ladder is set on a sill, and a pre-embedded support is provided on one side of the ladder. The upper end of the ladder is connected to the pre-embedded support via connectors. A main rail slide installation reference seat, a gate lintel installation reference seat, and a water seal plate installation reference seat are provided on one side of the ladder. During construction, the main rail slide installation reference seat, the gate lintel installation reference seat, and the water seal plate installation reference seat provide installation reference surfaces for the main rail, the gate lintel, and the main rail water seal plate, respectively. This device and method have fewer construction steps, and the installation of the gate slot embedded parts does not occupy the straight-line construction period of the dam concrete pouring, which can greatly accelerate the installation progress. During construction, the entire water sealing section of the gate slot embedded parts is laid out in one go, which can effectively avoid the cumulative error caused by multiple measurements and layouts of the water sealing section.

The invention provides a rapid and safe construction method for upstream and downstream concrete blocks of a rock-fill concrete arch dam, and relates to the technical field of rapid construction of rock-fill concrete arch dams. S2, a formwork system is installed; s3, pouring and initial setting; s4, partial mold removal; s5, rock-fill concrete construction; and S6, circulating construction is conducted. Due to the fact that the construction technology is simplified, the production and masonry links of precast blocks are omitted, and the related material cost, the transportation cost and a large amount of labor cost are effectively saved. According to measurement and calculation, by adopting the technical scheme provided by the invention, the project investment can be saved by about 8% compared with the traditional means, and the economic benefit is remarkable.

The present invention discloses a precast drainage cavity crown arch structure for a drainage gallery, which comprises multiple crown arch structures arranged on the top of the drainage gallery and arranged and connected in sequence along the length direction of the drainage gallery; a drainage cavity and a reserved drainage hole communicated with the drainage cavity are arranged in the crown arch structure, the reserved drainage hole is vertically arranged above the drainage ditch of the drainage gallery, and the drainage cavities of adjacent crown arch structures are communicated. The present invention can not only quickly realize the rapid positioning of the drainage holes of the dam body on the drainage gallery, and can connect the drainage holes with the drainage ditch of the drainage gallery without complex control means for accurate positioning, ensuring the smooth discharge of the seepage water of the dam drainage holes, but also can serve as a permanent structure on the top of the drainage gallery to play a role in support and protection.

To obtain the position information of a cable crane at all times and to achieve early warning of the operating status of the cable crane. [Solution] An embodiment of the present invention provides a cable crane monitoring method, device, electronic device, and medium. The method is applied to a cable crane monitoring device and includes a process identification module, an efficiency analysis module, and a safety analysis module. The method includes step 201 of acquiring continuous position information of a cable crane and acquiring material transport process information of the cable crane based on the continuous position information using the process identification module, step 202 of obtaining an efficiency index based on a feature value time and / or process time using the efficiency analysis module, step 203 of obtaining a safety index during cable crane operation using the safety analysis module, and step 204 of issuing an early warning about the operating status of the cable crane based on the efficiency index and a safety distance control index.