1427results about "Dykes" patented technology

The invention discloses a dike safety monitoring and maintenance system and method based on multi-sensor fusion, and belongs to the technical field of hydraulic engineering safety. Comprising a pore water pressure sensor, a horizontal displacement sensor, a vertical displacement sensor, a seepage monitoring sensor, a data acquisition and transmission module and a data acquisition center. And the precision of the sensor is high, for example, the precision of a pore water pressure sensor is within + / -0.1 kPa. And the transmission module adopts a hybrid communication network which is mainly composed of an optical fiber and is assisted by ZigBee and LoRa wireless. The data acquisition center is provided with a high-performance processor and the like. The method comprises the steps of data acquisition, preprocessing, anomaly detection and early warning, risk assessment, maintenance strategy formulation and the like. Data are processed through joint filtering, dynamic normalization and other algorithms, the safety state is judged through clustering analysis and a composite early warning model, and risks are evaluated by integrating multiple factors. According to the method, the accuracy, scientificity and effectiveness of dike safety monitoring and maintenance are remarkably improved, and a powerful guarantee is provided for hydraulic engineering safety management.

The utility model discloses a river channel engineering construction slope protection structure, which belongs to the field of slope protection structures, and is characterized by comprising a body mechanism, a connecting mechanism is mounted at the outer end of the body mechanism, a slope protection mechanism is mounted at the outer end of the connecting mechanism, the connecting mechanism comprises reinforcing plates, the reinforcing plates are uniformly distributed at the outer end of the body mechanism, mounting frames which are symmetrically distributed are mounted at the outer ends of the reinforcing plates, and connecting rods are mounted at the outer ends of the mounting frames. The inner end of the mounting frame is slidably connected with a positioning rod; by arranging the connecting rods and the positioning rods, when the slope protection reinforcing structure is installed, the positioning rods at the outer ends of the multiple reinforcing plates are inserted into the inner end of the mounting frame outside the other reinforcing plate, the multiple reinforcing plates can be conveniently assembled, the positioning rods drive the clamping blocks to be stably clamped to the inner ends of the connecting rods, and therefore the multiple reinforcing plates are more convenient to assemble; arrangement and installation are convenient, and the protection effect of the slope protection structure is improved.

The utility model discloses a template embedded type dam face permanent heat preservation protection module. Comprising a heat preservation core layer, a facing anti-seepage protection layer is arranged on the side, close to a concrete pouring formwork, of the heat preservation core layer, an internal pressure-bearing protection layer is arranged on the side, close to dam surface layer crack limiting steel bars, of the heat preservation core layer, and a thermal broken bridge supporting keel is arranged in the heat preservation core layer; an anchoring device is arranged in the area between the internal pressure-bearing protection layer and the dam surface layer crack limiting steel bars. The modular prefabrication and construction method is adopted, the prefabrication and installation method of a single module is simple and efficient, details such as anchoring protection measures are fully considered, the engineering construction operability is high, convenience and high efficiency are achieved, and the construction time of the heat preservation layer is greatly saved.

A leaching and desalinating system for sandy soil in estuarine land reclaimed by sand blowing before planting greenery is provided. The leaching and desalinating system comprises a water pump and pipe assembly, a freshwater storage tank and a main diverting and draining channel. The water pump and pipe assembly lifts freshwater from a river to the freshwater storage tank through a water delivery pipe, multiple infiltration parts in which greenery is planted are provided on the waterside slope, the infiltration parts are connected to each other via multiple drainage infiltration channels. The present disclosure can quickly desalinate the sandy soil in land reclaimed by sand blowing at a low cost, improve the physicochemical properties of the soil, and provide a basic guarantee for the subsequent greenery planting on the sandy soil in land reclaimed by sand blowing.

The utility model discloses a water conservancy project anti-scour ecological dam which comprises an ecological dam body and an anti-scour mechanism, the anti-scour mechanism comprises a plurality of partition plates, and a polygonal building structure formed by stacking a plurality of regular hexagonal prism gabion nets is arranged on one side between any two adjacent partition plates. A plurality of mounting holes are formed in one side of each partition plate, and a riprap filling layer is arranged in an enclosure structure formed by the multiple polygonal building structures matched with the two adjacent partition plates and the slope toe of the ecological dam body. According to the anti-scouring ecological dam for the water conservancy project, the regular hexagonal prism gabion net is used for replacing an existing gabion net for construction of a protective barrier, a multilateral construction structure can be built, a scoured face of a polyhedral structure can be formed, the bearing area is increased, and by cooperation with side face supporting of the partition plates and rear supporting of the riprap filling layer, the anti-scouring ecological dam is more stable in performance. The stability of the protection structure is effectively improved, and the collapse probability is reduced.

The invention discloses a dam leakage detection method and system based on an unmanned aerial vehicle and deep learning. The method comprises the following steps: acquiring dam surface image data through the unmanned aerial vehicle carrying image acquisition equipment; preprocessing the obtained dam surface image data; performing feature extraction and fusion on the preprocessed image data based on a deep learning model to obtain a multi-modal coupling feature image related to the leakage area; performing target detection on the multi-modal coupling feature image to identify a leakage area; and carrying out spatial positioning on the identified leakage area to determine a positioning coordinate of the leakage area. Dam leakage is detected by combining the unmanned aerial vehicle technology and the deep learning algorithm, the automation and intelligence level of detection is improved, manual intervention and errors are reduced, and the detection precision and efficiency are improved.

The invention discloses a grouting reinforcement anti-seepage method for a dam body of a coal mine underground reservoir, which comprises the following steps of: constructing a grouting hole at an artificial dam body position of a dam body to be treated, and performing segmented grouting on the grouting hole; the grouting materials are spread to the interiors of the artificial dam bodies, the interiors of the coal pillar dam bodies, the connecting positions between the artificial dam bodies and the coal pillar dam bodies, the connecting positions between the artificial dam bodies and the top plate rock stratum and the connecting positions between the artificial dam bodies and the bottom plate rock stratum; therefore, micropore cracks in the to-be-treated dam body and the connecting positions between the to-be-treated dam body and the top plate rock stratum and between the to-be-treated dam body and the bottom plate rock stratum can be effectively blocked, the leakproofness and the anti-seepage performance of the coal mine underground reservoir dam body are remarkably improved, and effective anti-seepage reinforcement of the coal mine underground reservoir dam body is achieved.

The bank protection cofferdam structure comprises a first pile row and a second pile row which are arranged in parallel, the first pile row and the second pile row are driven in soil, the upper end of the first pile row and the upper end of the second pile row are connected through an opposite-pulling mechanism, a first bamboo raft sheet layer and an anti-seepage geomembrane are arranged on the inner side of the first pile row, and a second bamboo raft sheet layer and an anti-seepage geomembrane are arranged on the inner side of the second pile row. A second bamboo raft piece layer and geotechnical cloth are arranged on the inner side of the second pile row, backfill soil is arranged between the first pile row and the second pile row, and bagged soil is evenly laid on the top of the backfill soil. The anti-seepage performance and the stability of the revetment cofferdam structure can be improved.

The invention belongs to the technical field of hydraulic engineering, and discloses a hydraulic engineering flood prevention water retaining device which comprises a water retaining plate, butt joint mechanisms arranged on the two sides of the water retaining plate and a water guide mechanism installed in the water retaining plate, a reinforcing mechanism is arranged on the side, adjacent to the butt joint mechanisms, of the water retaining plate, and an anti-skid pad is installed on the lower surface of the water retaining plate; the butt joint mechanism comprises a fixed plate and a butt joint block which are fixedly connected to the two sides of the water baffles, through the design of water baffle sealing, sealing rubber strips and the butt joint mechanism, the position of a movable plate is adjusted through a locking bolt, then the butt joint block is clamped by two sets of prisms, the adjacent water baffles are spliced, the sealing rubber strips extrude each other during splicing, and therefore the sealing effect is achieved. The sealing rubber strip effectively enhances the sealing performance of the butt joint position of the water baffles, and the water leakage phenomenon is prevented to a great extent. And the trapezoidal water tank scientifically guides water flow, so that accumulated water is prevented from generating extra pressure on the water baffle, and the service life of the water retaining device is prolonged.

The present invention discloses a foldable water conservancy and flood prevention device, which relates to the technical field of water conservancy and flood prevention facilities, and comprises a base placed horizontally on the ground, one side of the base being foldably hinged with a water baffle, a telescopic rod for adjusting the folding angle being connected between the base and the water baffle, and an anti-seepage cloth for blocking ground leakage is provided at the bottom of the base. The foldable water conservancy and flood prevention device uses a pressing mechanism to cause a pressing frame to lead out of the base and tilt and deflect toward a step surface, so that the unfolded abutting frame drives a cross bar to press against the anti-seepage cloth laid on the step surface, so that the anti-seepage cloth can abut against the inner right angle of the step, and at the same time, the teeth on the lower surface of the pressing frame abut against the outer right angle of the step surface, so that the anti-seepage cloth can be stably and flatly laid on the step surface, and at the same time, the hollow water blocking plate and the filter plate can cooperate to block and protect the water baffle and the anti-seepage cloth, ensuring that the water conservancy and flood prevention device has a safe anti-seepage effect when in use.

The invention relates to the technical field of water conservancy project dams, in particular to a water conservancy project dam reinforcing protection assembly and a reinforcing method.The water conservancy project dam reinforcing protection assembly comprises a dam body, a U-shaped frame is detachably connected to the dam body, a movable protection plate is installed on one side of the U-shaped frame, and two telescopic assemblies are slidably installed in the movable protection plate; the reinforcing method comprises the following steps of component mounting and reinforcing, buoyancy adjusting, preliminary water wave blocking and closed shielding. According to the device, the upper end of the baffle is located at the upper end of the water body through the buoyancy effect in the water body through the buoyancy assembly and the high-pressure air bag retraction assembly, and the impact force of water waves is converted to effectively break continuous and uniform impact of the water waves; and when water waves become large, the positions of the baffles can be rapidly locked, the two movable baffles are unfolded, the dam body is fully shielded, the water waves are prevented from directly impacting the dam body, the dam body can be effectively reinforced through the U-shaped frame, and the firmness of the face, facing the water waves, of the dam body is improved.

The invention discloses a multifunctional water retaining device for water conservancy construction, and relates to the technical field of water conservancy projects, the multifunctional water retaining device comprises a base and a first water retaining plate fixed at the top end of the base, a plurality of ground nails are arranged at the bottom end of the base, a self-adjusting assembly and a buffering assembly are arranged in the first water retaining plate, and the buffering assembly is located below the self-adjusting assembly; the self-adjusting assembly comprises an open groove formed in the first water baffle, and a second water baffle is installed in the open groove in a sliding mode. The situation that the height of a traditional water baffle is fixed and cannot be automatically adjusted according to the change of the water level, so that when the water level is higher than the water baffle, the water overflows from the top of the water baffle, and equipment and materials are damaged can be avoided, meanwhile, manual intervention can be reduced, the psychological pressure of constructors can be relieved, the working intensity is reduced, and in an emergency, the construction efficiency is improved. And workers can timely evacuate or take corresponding protection measures, so that the safety can be effectively improved.

The invention discloses a method for near-natural rapid restoration of a degraded wetland by using micro-landform assembly, and belongs to the technical field of wetland ecological engineering. The invention aims to solve the restrictive problems of poor habitat heterogeneity of the degraded wetland and low sustainability of the restored wetland. The method comprises the following steps: 1, restoring wetland site selection and habitat quality evaluation; 2, optimizing the shape of the substrate of the restored wetland and constructing a sheetflood water network; 3, collecting a hill pier body and assembling the hill pier body with a micro-landform; 4, sectional hydrological regulation and dynamic management; and 5, evaluation and mediation management and control of the recovery effect. The method is clear in principle and high in operability, habitat heterogeneity can be enhanced through micro-landform matching so as to promote plant diversity improvement, the design thought conforms to the close-to-nature recovery concept, and any project implementation hidden danger and secondary ecological risk do not exist. The method disclosed by the invention is applied to the near-natural restoration of the degraded wetland. The method is used for near-natural restoration of the degraded wetland with lack of habitat heterogeneity.

The utility model relates to the technical field of water conservancy projects, and discloses a water retaining device based on water conservancy project construction, which comprises a water retaining plate body, the rear side surface of the water retaining plate body is provided with a storage groove, the inside of the storage groove is rotatably connected with a driving rod, and the left side surface of the water retaining plate body is fixedly connected with a motor. An output shaft of the motor rotationally penetrates into the water fender body and is fixedly connected with the driving rod, a connecting assembly is fixedly connected to the surface of the driving rod, two vertical grooves are formed in the inner wall of the storage groove, sliding blocks are slidably connected to the interiors of the vertical grooves, and two first fixing plates are fixedly connected to the surfaces of the sliding blocks; the whole device can be stored by starting the motor, so that the occupied area of the device is greatly reduced, the device is more convenient to stack and transfer when not in use, the convenience and flexibility of the device are greatly improved, meanwhile, the storage mode is simpler and faster, and the practicability is higher.

The present invention discloses a breach rapid plugging device and method based on rocket anchors and polymer composite materials, which relates to the technical field of plugging breaches in water conservancy projects, including broken dike heads on both sides of the breach, and the outer periphery of the broken dike heads on both sides is provided with a wrapping structure, the wrapping structure includes a first line of protection and a second line of protection, the second line of protection is connected to a fixed structure, and the fixed structure is arranged on the broken dike head; an entry and closure structure is arranged between the wrapping structures on both sides, and the two ends of the entry and closure structure are connected to the wrapping structures on both sides. The present invention adopts the above-mentioned breach rapid plugging device and method based on rocket anchors and polymer composite materials, adopts a large geotextile to stabilize the dike head, rocket anchors and polymer geosynthetics to quickly plug the breach, and finally adopts a rubber bag to be filled with water for covering and pressing, which further improves the stability of the wrapping head, and has the advantages of fast plugging speed and high efficiency.

The present invention discloses a water-stopping and anti-seepage device for water retaining construction of a water conservancy project, comprising a water stop plate, a switching component, a support component and an extension component, one side of the water stop plate is fixedly connected with a positioning frame, and the insides of the water stop plate and the positioning frame are interconnected, both ends of one side of the water stop plate are provided with vertical grooves for the support component to unfold, and both sides of the water stop plate are fixedly connected with scrapers, and the scrapers correspond to the extension component. The present invention provides support to the water stop plate while effectively dispersing the load on the water stop plate by setting a support component; by setting an extension component, the width of the water channel is adaptively adjusted to achieve blocking and water stopping, and the extension process has self-locking properties to further effectively reduce the risk of water leakage at the gap; by setting a switching component, the device automatically switches to the water channel blocking operation after completing the support unfolding operation, effectively reducing the amount of operation of personnel to improve the working efficiency of the device.

The invention discloses an assembly type mortise and tenon joint retention wall and a construction method. The retention wall comprises a foundation base, a vertical water baffle and a dust removal and dirt removal unit. The foundation base is formed by pouring reinforced concrete on the installation site, and a second mortise is formed in the foundation base. A plurality of groups of vertical water baffles are arranged according to water retaining requirements, second tenons matched with the second mortises are arranged at the bottoms of plate bodies of the vertical water baffles, and first mortises and first tenons matched with the first mortises are arranged on the two sides of the plate bodies correspondingly; the foundation base is connected with the vertical water baffles in a two-section mortise and tenon mode, and the water baffles are connected in a mortise and tenon and wedge nail tenon combination mode. The dust removal and decontamination unit comprises a water passing hole, a three-stage reservoir, a dust removal spraying pipe and a dredging spraying pipe; sewage is filtered through the water passing holes, then enters the third-stage water storage pool and is sprayed out from the dust removal spraying pipe and the desilting spraying pipe according to needs, and the dust falling function and the desilting function are achieved respectively. According to the retention wall, the stability of the overall structure is greatly improved, and water resources can be recycled.

The utility model discloses a landfill rain and sewage diversion blocking structure, and relates to the technical field of landfill rain and sewage diversion blocking, the landfill rain and sewage diversion blocking structure comprises a slope and a valley-type refuse landfill arranged on one side of the slope, the valley-type refuse landfill comprises a non-landfill area and a landfill area, a groove is formed between the non-landfill area and the landfill area, and the slope is arranged in the groove. The non-landfill area is arranged between the groove and the slope, a concrete bottom plate is poured on the inner bottom face of the groove, a flow dividing blocking structure is arranged in the middle of the upper surface of the concrete bottom plate, and flow dividing channel structures are arranged on the left side and the right side of the flow dividing blocking structure. Through cooperation of the structures, rainwater accidentally flowing into the separation dam can be led out, the situation that rainwater in the separation dam overflows to damage the diversion blocking structure is prevented, and therefore the rainwater separation blocking effect of the diversion blocking structure is guaranteed, the amount of rainwater mixed into a landfill area is reduced, and then the sewage treatment amount is reduced; and the rain and sewage diversion blocking effect is improved.

The utility model relates to the technical field of steel sheet pile cofferdams, in particular to a detachable cofferdam module for flood control engineering, which comprises a steel sheet pile structure, connecting buckle structures are fixed on two opposite side surfaces of the steel sheet pile structure, each connecting buckle structure comprises a first inserting buckle and a second inserting buckle, and a hollow area is arranged in a steel sheet pile. And a plurality of triangular support frame structures are fixed in the hollow area. The steel sheet pile solves the problems that two adjacent steel sheet piles in the prior art cannot be installed at a right angle or a smaller angle during installation, the structure is simple, and the steel sheet piles are easy to bend.

The invention relates to an intelligent control stability augmentation flow guide soil retaining system capable of rapidly solidifying and widening a dike and a construction method, the dike comprises a dike main body, a riverbed, dike side river water, structure side river water and a flow guide soil retaining structure, the flow guide soil retaining structure comprises a retaining soil, a widening dike, a drainage device and a grouting pipe, and the retaining soil is provided with a flow guide cavity penetrating through the outside; the widened dike is arranged between the retaining soil and the dike main body; the drainage device comprises a drainage pipe and a pump connected with the drainage pipe, one end of the drainage pipe is arranged in the widened dike, and the other end of the drainage pipe extends into the flow guide cavity; one end of the grouting pipe penetrates through the retaining soil and extends to the external space. Through mutual cooperation of the soil retaining device, the dike widening device and the drainage device, high-water-content filling soil can be properly treated, rapid drainage is achieved, and therefore the stability of the dike is powerfully improved, and the situation of piping and scattered leaching of the dike is prevented. The device has the advantages of being simple in structure, convenient to operate, easy to popularize and the like, and has great significance in promoting the dike to achieve efficient and safe widening construction.

The invention relates to the technical field of flood prevention, in particular to a novel flood prevention baffle for a traffic opening of a hydropower station and a using method thereof.The novel flood prevention baffle comprises a base and further comprises a protective cover fixedly connected to the surface of the base, a vertical plate and a transverse plate, the vertical plate and the transverse plate are fixedly connected to the top of the base and the top of the protective cover correspondingly, and a groove is formed in the top of the transverse plate; according to the flood prevention baffle, the bent plate can be pushed through flowing of a large amount of rainwater, the baffle body is turned over so that the baffle body can block the large amount of rainwater, meanwhile, the height of the flood prevention baffle can be increased according to rising of the water level, and therefore the safety of the flood prevention baffle in use is improved; and a water draining groove in the top of the water filtering plate can be cleaned, so that the water draining speed is guaranteed, the water level rising speed is slowed down, and the problems that when part of flood prevention baffles are used at present, workers need to assemble the flood prevention baffles, time and labor are wasted in the process, and the timeliness of flood prevention operation is likely to be affected are solved.

The invention discloses a three-dimensional water ecological restoration method based on an ecological system, and the method specifically comprises the following steps: S1, carrying out the construction of a temporary dam for a river channel of a construction area, and carrying out the water ecological operation and water level reduction for the construction area; impurity cleaning is conducted on the river channel area after the water level is lowered; s2, in-situ remediation of the bottom mud: scattering a bottom material modifier in the river channel area after the sundries are cleared to complete the in-situ remediation of the bottom mud; submerged plants are planted; s3, after the submerged plants are planted, an ecological water purification barrier and a biological grid are installed, and water purification is conducted; s4, emergent aquatic plant buffer zone planting, microorganism regulation and control and aquatic animal putting are conducted on the two sides of the river channel, a three-dimensional water ecological restoration network is constructed, and water ecological restoration is completed. Through the synergistic effect of the ecological water purification barrier and the biological grid, rapid and high-strength physical adsorption and microbial degradation of pollutants are achieved, meanwhile, ecological niche is built, and recovery of biological diversity is achieved.

The invention discloses water retaining equipment for water conservancy project flood prevention, and relates to the related technical field of the water retaining equipment for flood prevention, the water retaining equipment for water conservancy project flood prevention comprises a supporting mechanism arranged on a water retaining plate, the supporting mechanism is arranged, and the supporting mechanism comprises a fixing plate fixedly arranged on the water retaining plate; a first stress film is further fixedly arranged on the fixing plate, a first oil liquid space is further formed between the first stress film and the water baffle, a layer of oil storage plate is additionally arranged on the flood prevention baffle, a soft film is arranged on the oil storage plate, the soft film is impacted to deform through the impact force of water flow, and therefore the flood prevention baffle is driven by oil liquid, and the flood prevention baffle is driven by the oil liquid. Supporting force is provided for the rear side of the water baffle, the supporting plate on the rear side can exert force for supporting every time when water flow impacts, and therefore the water baffle is stressed more evenly, the whole water baffle is more stable and firmer, and the flood prevention and water retaining effect of the water baffle is greatly improved.

The invention relates to the field of water conservancy projects, in particular to a modular quickly-assembled assembly type flood control sub-embankment for emergency flood control, which comprises a triangular hinge frame, an assembly cross beam is arranged in the triangular hinge frame, and the triangular hinge frame is used for supporting flood control plates and can be folded and stored to reduce the transportation volume; splicing suites are fixedly arranged at the two ends of the assembling beams, and the assembling beams are in rapid butt joint with the assembling beams of other flood control sub-embankments through the splicing suites, so that modular splicing of the multiple sub-embankments is achieved. The water retaining daughter board is fixedly installed on the outer side of the assembly cross beam, the height of the water retaining daughter board is matched with the height of the triangular hinge frame, and the water retaining daughter board is used for blocking flood; and the folding and unfolding mechanism is arranged in the center of the bottom of the triangular hinge frame, according to the modular quickly-assembled assembly type flood control sub-embankment for emergency flood control, through the storage state, all components can be stored in order, and the damage risk in the transportation and storage process is reduced.

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 utility model belongs to the technical field of flood control devices, and particularly relates to a flood control device convenient and fast to fill, which comprises a flood control device body, the flood control device body comprises a flood control blocking box, a filling groove is reserved at the top of the flood control blocking box, and a handle is fixedly connected to the inner wall of the filling groove. The top of the flood prevention blocking box is provided with a splicing hole, the bottom of the flood prevention blocking box is in threaded connection with an insertion rod, the surface of the flood prevention blocking box is fixedly connected with a sealing mechanism, the sealing mechanism comprises a bottom sealing gasket, and the surface of the bottom sealing gasket is fixedly connected with the bottom of the flood prevention blocking box; according to the anti-flood wall, a user can conveniently and rapidly fill the interiors of the filling grooves through the arranged anti-flood blocking boxes, the anti-flood blocking boxes can be rapidly spliced into the anti-flood wall body through the splicing holes, the inserting rods, the clamping grooves and the clamping blocks, meanwhile, splicing seams are sealed through the bottom sealing gaskets and the side face sealing gaskets, and therefore the anti-flood wall body is formed. And the use convenience of the flood control device is improved.

The invention discloses a deep foundation pit supporting system in a complex environment and a construction method, and belongs to the technical field of deep foundation pit construction. The construction method comprises the following steps that technical preparation is conducted, and slope protection is conducted; according to the method, the foundation is effectively divided into different areas, the problems that an existing foundation pit supporting system is low in construction efficiency, insufficient in safety, waste in resources and the like are effectively solved, the slope protection process is set in the method, a safety fence is arranged at the slope top, water outside the pit is prevented from entering, and the safety of the foundation pit supporting system is improved. According to the method, materials stacked beside a pit and vehicle overload rolling can be effectively prevented, constructors are protected against falling, the overall safety of follow-up construction is improved, meanwhile, in the waist beam construction process of the anchoring force transmission device, the axis of the anchor rod can be perpendicular to the pressed face, the structural strength of the anchor rod can be greatly improved, and the construction efficiency is improved. Therefore, firmness and stability of the foundation pit can be effectively guaranteed, and the construction effect of the whole method is improved.

The utility model discloses a flood control and emergency rescue device with an anti-impact capability, belongs to the technical field of flood control and emergency rescue equipment, and aims to solve the technical problems that in the prior art, a traditional disposal mode and equipment consumes a long time and consumes a large amount of manpower and material resources for disposal of dike dangerous cases. The water retaining device comprises a water retaining supporting surface and a plurality of fixing units, the water retaining supporting face comprises a plurality of supporting frameworks and water retaining cloth arranged on the supporting frameworks in a sleeving mode. One end of each supporting framework is provided with a fixing end, and the other end of each supporting framework is connected with the corresponding fixing unit. The adjacent fixing units are connected through connecting pieces. The flood prevention and emergency rescue device with the anti-impact capacity is simple in structure, rapid in arrangement and capable of rapidly, conveniently and relatively safely achieving the risk disposal purpose.

The invention discloses a cofferdam staging construction method which comprises the following steps: on the basis of the overall design of a cofferdam, adding a first-stage cofferdam design, and transversely dividing a river channel into a main river channel and a non-main river channel according to hydrological survey information; the first-stage cofferdam comprises an upstream cofferdam, a downstream cofferdam and a first-stage cofferdam overflowing riprap protector from a bank slope on one side of a non-main riverway to a main riverway joint part; the second-stage cofferdam is combined from a bank slope on one side of the main river channel to the first-stage cofferdam to form an integral Meanwhile, a first-stage cofferdam flood season flood season scheme is designed; according to the method, cofferdam filling construction is involved in advance before river closure, and cofferdam implementation is completed in two dry periods; construction of the cofferdam anti-seepage wall is involved in advance, the construction period of the cofferdam anti-seepage wall is prolonged, and equipment needed for construction of the cofferdam anti-seepage wall is greatly reduced; the cofferdam is filled by stages, so that the use efficiency of earthwork equipment is improved; the cofferdam is constructed by stages, so that the construction time of the cofferdam is prolonged, and the construction period of the cofferdam is better guaranteed; and through effective protection measures, the first-stage cofferdam flood safety is guaranteed.

The invention provides an auxiliary structure for beach and shallow sea ecological restoration and a restoration system construction method, and belongs to the technical field of water conservancy projects for beach and shallow sea ecological restoration. The auxiliary structure comprises a combined type permeable submerged dike structure, a natural wave dissipation combined pile body and an oyster cultivation net-shaped structure. The combined type permeable submerged dike structure comprises hexagonal hollow prisms and isosceles trapezoid hollow prisms, the two prisms are of a staggered and stacked structure, and a natural shelter is provided for small marine organisms. The natural wave dissipation combined pile bodies penetrate through the combined type permeable submerged dike structure through the upper holes and the lower holes of the prisms, and the combined type permeable submerged dike structure is effectively supported and fixed. The oyster cultivation net-shaped structure is fixed to the natural wave dissipation combined pile body, and the design of the net-shaped structure meets the filter feeding environment of oyster cultivation. The repairing system is correspondingly designed based on an auxiliary structure and a field environment. The structure is simple, raw materials are easy to obtain, the protection engineering and the oyster reef body are organically combined, ecological environmental protection is achieved, and follow-up manual treatment is not needed.