48results about How to "Guaranteed blocking effect" patented technology

The present invention relates to a mine plugging method and structure thereof, which uses roughening and grooving of cave walls, brickwork, temporary water diversion, clay filling, and concrete plugging of wellheads to plug the mine. The present invention sets a clay filling section before the concrete plugging section, and performs interval grooving around the cave wall of the set clay filling section, which can ensure that the filled clay is completely combined with the cave wall to prevent water seepage; to ensure that the clay filling is dense, brickwork is set at both ends of the clay filling section, and the brickwork is tightly attached to the cave wall to prevent seepage. The technical solution of the present invention is safe, reliable, efficient, and fast, and complies with relevant national technical specifications, greatly improving the airtightness and firmness of the plugging of mine water gushing, and eliminating the environmental pollution risk of abandoned mine water gushing.

The invention discloses a sheet metal part welding tool and a welding method thereof, relates to the technical field of sheet metal part machining, and aims to solve the technical problem that when a current welding tool fixes a sheet metal part, the sheet metal part is prone to damage and deformation, and the sheet metal part welding tool comprises a workbench, welding equipment installed on the workbench and a movable machining platform assembly installed on the workbench. The workpiece taking assemblies are mounted on the two sides of the workbench; the part taking assembly comprises mechanical arms installed on the two sides of the workbench and adsorption assemblies installed at the output ends of the mechanical arms. The adsorption assembly comprises an adsorption plate, adsorption holes, a guide pipe and a vacuum pump; a cavity is formed in the adsorption plate, and the multiple adsorption holes are formed in one side of the adsorption plate and distributed in an annular array mode. The sheet metal parts are grabbed in a vacuum adsorption mode, and the appearance quality and the surface integrity of the sheet metal parts can be kept easily.

The utility model belongs to the technical field of gas engineering, and relates to a pipeline temporary plugging mechanism for gas engineering construction, which comprises a ventilation pipeline, one side of the ventilation pipeline is fixedly connected with an air bag, the surface of the ventilation pipeline is sleeved with a first sleeve and a second sleeve, the surface of the first sleeve is fixedly connected with an adapter block and a telescopic plate, and the adapter block is fixedly connected with the air bag. A pin shaft is fixedly connected to the interior of the adapter block, the surface of the pin shaft is sleeved with an adjusting mechanism, and by arranging a first fixing rod, a second fixing rod, a first sleeve, a second sleeve, a movable rod and a connecting rod, the size can be adjusted according to different inner diameters of the gas pipeline; therefore, the gas pipeline plugging device is suitable for plugging work of gas pipelines with different diameters, when the diameter of the gas pipeline exceeds the diameter of the limiting ring, the plugging work of the gas pipelines with different diameters can be met by replacing parts with different specifications, and the application range of the gas pipeline plugging device is widened.

The pipeline plugging device comprises a plugging sleeve, a plugging fixing mechanism and a plugging reinforcing mechanism, one end of the plugging sleeve is open, the other end of the plugging sleeve is closed, and the plugging sleeve is used for being arranged at one end of a pipeline body in a sleeving mode and used for sealing a pipe opening of the pipeline body; the plugging fixing mechanism is fixedly installed on the plugging sleeve and used for fixing the plugging sleeve to the pipeline body. The plugging reinforcing mechanism is installed on the plugging sleeve and used for clamping the pipeline body. The pipeline has the advantages of being simple in structure, reasonable in design, convenient to use and high in installation efficiency, blocking the pipe opening of the pipeline body through the blocking sleeve, connecting the pipeline to the air outlet pipe and opening the valve after the blocking sleeve is installed and the air bag is not inflated. Therefore, blocking maintenance can be realized without influencing the smoothness of the pipeline, and the condition that the pipeline can only be completely closed during blocking maintenance is avoided.

The embodiment of the utility model provides an auxiliary device for children enema radiography examination. The child enema radiography examination auxiliary device comprises an abutting and blocking piece and a supporting piece, one side of the abutting and blocking piece is a blocking side, the other side of the abutting and blocking piece is a supporting side, the blocking side is provided with a protrusion, the two sides of the protrusion incline downwards and outwards in an arc shape in the width direction of the abutting and blocking piece so as to block the anus, the abutting and blocking piece is provided with a catheter inlet hole penetrating through the protrusion, and a catheter can penetrate through the catheter inlet hole. The supporting piece is arranged on the supporting side, and the abutting and blocking piece is made of a soft water absorption material so as to adsorb liquid excrement. The hardness of the supporting piece is larger than that of the abutting and blocking piece so as to support the abutting and blocking piece to be in an abutting state with the anus and buttocks on the periphery of the anus, so that input filler such as contrast agents or gas and excrement cannot be discharged from the anus, the clysis radiography process is guaranteed to be smooth, when a patient is subjected to clysis radiography examination, operation of medical staff is facilitated, and the safety of the patient is improved. And the radiation time of children under X-rays is reduced.

This utility model provides an automatic sawing device for automotive castings, belonging to the field of casting riser sawing devices. It includes a machine room with a material drop chute at the bottom, within which a conveyor is installed; and a sawing assembly located on the inner rear side of the machine room. This utility model, through its separation shell, separation plate, and drive assembly, can collect falling structural parts and flowing cooling water during the sawing process of automotive castings. The cooling water is then discharged through a water trough on the separation plate and collected in a water collection tank through separation holes. After water separation, the structural parts fall after the separation plate is removed, enter the material drop chute, and are conveyed out of the machine room by the conveyor. This minimizes the problem of contaminating the conveyor when removing the sawn structure, improves the service life of the conveyor structure after long-term use, and reduces the frequency of conveyor belt cleaning.

The low-noise cooking utensil comprises a pot body, a pot cover and a first heat dissipation assembly installed on the pot cover, the pot cover comprises a surface cover and an inner cover, and the surface cover and the inner cover are matched to define a cooling cavity communicated with the outside. The first heat dissipation assembly comprises a first sealing ring, a mounting cavity and a first fan assembly arranged in the mounting cavity, a first ventilation hole is formed in the bottom wall of the mounting cavity, and air blown out of the first fan assembly flows to the cooling cavity through the first ventilation hole and then is discharged to the outside; a damping gap is formed between the first fan assembly and the side wall of the mounting cavity, and the first sealing ring is arranged between the first fan assembly and the bottom wall of the mounting cavity so as to prevent cold air at the air outlet end of the first fan assembly from flowing to the damping gap. According to the cooking utensil, noise can be effectively reduced, and the air cooling effect can be improved.

The utility model discloses a plastic tray with buckle type plugs, which comprises a plate body, a moving groove is arranged on the plate body, a connecting component is arranged in the moving groove, an auxiliary component is arranged on the connecting component, plugs of different specifications can be connected through the connecting component, and the positions of the plugs can be adjusted. By arranging the plug, the situation that the plug is located at the same position for a long time can be avoided, the placement effect of tray objects can be better guaranteed, by arranging the auxiliary assembly, the height of the plug can be adjusted, the plugging range can also be adjusted, and therefore the plugging effect can be better guaranteed.

The invention discloses cooling pipe air tightness detection equipment which comprises a cabinet body, a panel is fixed to the top of the cabinet body, a first sliding frame and a second sliding frame are installed on the two sides of the top of the panel, two first sliding blocks are arranged on the first sliding frame in a sliding mode, and a second sliding block is arranged on the second sliding frame in a sliding mode. A first plugging piece and a second plugging piece are installed on the two first sliding blocks respectively, a third plugging piece is installed on the second sliding block, a first height adjusting piece for achieving height adjustment of the first plugging piece and the second plugging piece is installed on the first sliding block, and a second height adjusting piece for achieving height adjustment of the third plugging piece is installed on the second sliding block. And a pressing mechanism is mounted on the panel. According to the invention, two ports of different types of cooling pipes can be plugged tightly, stable air blowing test is realized, the cooling pipes are fixed in an air bag extrusion mode, the cooling pipes are convenient to fix, and the test effect is more stable and better.

The utility model relates to the technical field of water conservancy, in particular to a water conservancy pipeline end plugging device which comprises a fixing column, a rubber ring is fixedly sleeved on the outer wall of the fixing column, limiting rings are sleeved on the outer wall of the fixing column and located on two sides of the rubber ring, one of the limiting rings is fixedly connected with the outer wall of the fixing column, and sliding grooves are arranged on the outer walls of two sides of the fixing column. After the device is inserted into an inner cavity of a pipeline, gas is guided into the pipeline through the external gas pipe and then enters the rubber ring, so that the rubber ring expands and can be attached to the inner wall of the pipeline, the plugging effect is guaranteed, meanwhile, the threaded sliding block can be driven to move by rotating the threaded rod, and then the movable limiting ring can apply pressure to the rubber ring again; and therefore, the plugging effect can be improved again, the situation of leakage is effectively avoided, and meanwhile the situation of pipeline deformation is also avoided.

The utility model discloses a variable-diameter balloon catheter, and relates to the technical field of medical instruments. Comprising a variable-diameter balloon, an outer tube and an inner tube, the near-end diameter of the variable-diameter balloon is larger than the far-end diameter, the diameter of the variable-diameter balloon is reduced in a stepped mode from the near end to the far end, the near end of the variable-diameter balloon is connected with the outer tube, the inner tube with one end connected with the far end of the variable-diameter balloon is arranged in the outer tube in a sleeved mode, the near-end diameter of the variable-diameter balloon is L1, and the near-end diameter of the variable-diameter balloon is L2. The diameter of the far end of the variable-diameter balloon is L2, and the difference value between L1 and L2 is larger than 1 nm. The variable-diameter balloon adopts a stepped variable-diameter design, can be better attached to complex blood vessels and is high in compliance, the blood flow plugging effect is guaranteed, the situation that the blood vessels are damaged due to the fact that the supporting force of the variable-diameter balloon is too large can be avoided, the integrated Y-shaped Luer seat is adopted, the sealing performance is good, liquid filling is achieved, the time for drawing out the variable-diameter balloon is short, operation of doctors is facilitated, risks in the operation are reduced, and the operation efficiency is improved. The success rate of an operation is improved, and the market competitiveness of a product is improved.

The invention discloses a deep foundation pit outer confined aquifer recharge system adjacent to an existing building and an operation method, the system comprises the existing building, a foundation pit and a waterproof curtain, a recharge well hole is arranged between the existing building and the waterproof curtain, a pressurization recharge system is installed in the recharge well hole, and the pressurization recharge system is connected with the existing building. The pressurization recharge system comprises an adjustable recharge device, a pressure detection unit, a control unit and a data acquisition unit. The data acquisition unit comprises a plurality of soil permeability sensors and a plurality of water level sensors; the control unit carries out processing according to information measured by the pressure detection unit and the data acquisition unit and controls the pressurization recharge assembly to inject corresponding water into the recharge well hole. The operation method comprises the steps of recharge well hole construction, adjustable recharge device installation and pressurization recharge operation. The system can avoid the problem that the water level of the confined aquifer outside the foundation pit is reduced so as to influence the safety of the existing building under the condition of ensuring the safety of the foundation pit without sudden gushing, is simple and reliable in construction method and low in cost, and has relatively strong popularization significance.

The utility model discloses an anti-dropping trachea cannula, which is characterized in that the stable state of the trachea cannula is realized through the matching of all parts during an operation, the normal operation of an artificial airway is effectively maintained and guaranteed, the problems of outward movement, dropping, inward sliding and the like of the trachea cannula are avoided, the efficiency and the safety of the operation are improved, and the life safety of a patient is further guaranteed. According to the technical scheme, the device is characterized by comprising a pipe body, a limiting piece and a deformation piece, a connector is arranged at one end of the pipe body, an air outlet and a fixing air bag are arranged at the other end of the pipe body, the fixing air bag is connected with a filling connector through a branch pipe, a penetrating hole is formed in the middle of the limiting piece, and the limiting piece can be arranged at the position, close to the connector, of the pipe body in a sleeving mode. The limiting piece is detachably connected with the tube body, the trachea cannula is tightly wrapped on the inner side of the penetrating hole through the fastening assembly, and the deformation piece is arranged on the tube body and located at the position, corresponding to the inner side of teeth, of the tube body.

The invention belongs to the field of oil and gas field development, and discloses a drillable and grindable high-water-content horizontal well plugging tool and a using method.The plugging tool comprises a first connector and a connecting sleeve which are connected with one end of a bridge plug body, and a second connector and a lifting sleeve which are connected with the other end of the bridge plug body; according to the plugging tool, the pressure of the inner cavity of the mandrel acts on the main piston and the auxiliary piston; the main piston drives a nut, a central pipe, a second joint, a rubber sleeve shaft and a second cone to move upwards and extrudes the lower part of the slip to move upwards; the auxiliary piston drives the taper sleeve and the first cone to move downwards to extrude the upper part of the slip to move downwards, so that the slip is expanded to anchor the sleeve and the rubber sleeve is compressed to block an upper oil layer and a lower oil layer; the plugging tool combination can be installed at a reasonable position as required according to the plugging requirement of a water outlet point of a middle-high water content horizontal well, a swabbing production layer section can be converted by lifting and lowering a pipe column at a wellhead, the requirement of two-section and three-section separated mining is met, an oil pipe does not need to be directly connected with a separated mining tool, and the reliability is improved.

The embodiment of the invention provides a display panel and a display device. The display panel comprises a substrate; the array layer is located on one side of the substrate, the array layer comprises a driving circuit, and the driving circuit comprises at least one transistor; the array layer further comprises a plurality of openings, and at least two openings are located on at least one side of the transistor in the first direction; the projections of the two openings at one side of the transistor in the first direction are not overlapped, and the projections of the centers of the two openings to the substrate are not overlapped; the light-emitting element is located on the side, away from the substrate, of the array layer, and the light-emitting element is electrically connected with the transistor; the light blocking structure comprises a light blocking unit, and the opening is filled with the light blocking unit; wherein the first direction is parallel to the plane where the substrate is located. According to the display panel, the openings in different positions are formed in one side of the transistor, and the openings are filled with the light blocking units, so that light can be reflected or absorbed, light leakage of the transistor is reduced, and the overall display effect of the display panel is guaranteed.

A fabricated building joint device comprises a plurality of spliced prefabricated wallboards, baffles are arranged on the outer sides of the adjacent prefabricated wallboards, joints are formed between the adjacent prefabricated wallboards and the baffles, plugging plates used for plugging the joints are arranged on the outer sides of the prefabricated wallboards, and a plurality of fastening assemblies used for preventing the plugging plates from falling off are arranged on the backs of the plugging plates. By arranging the plugging plate and the fastening assembly on the outer side of the prefabricated wallboard, a series of problems caused by untight plugging of the joint are fundamentally solved, the working efficiency is greatly improved, the labor intensity of construction workers is relieved, and the plugging effect of the joint is better guaranteed.

The invention discloses a screw extruder with an alarm function, and relates to the technical field of extruder alarms, the screw extruder comprises a shell and a driving module which are arranged on a screw extruder body, a machine barrel is arranged in the shell, a screw body is arranged in the machine barrel, and a feeding port is formed in the top of the machine barrel. When the extrusion opening is blocked, the blockage can be detected in time, an alarm is given through the alarm, the extrusion efficiency and quality are ensured, and meanwhile, the outlet of the extrusion opening can be blocked and sealed, so that more unqualified materials are prevented from being extruded, and the waste of the materials can be avoided; besides, before the raw materials are fed into the feeding port, waste heat of the extrusion port can be used for preheating the raw materials, meanwhile, the raw materials are heated and softened, impurities which cannot be heated and softened in the raw materials can be conveniently removed, normal operation of the screw extruder body is guaranteed, meanwhile, the probability that the extrusion port is blocked can be reduced, and the production efficiency and effect are guaranteed.

The invention discloses an electric sightseeing vehicle with shading and sunscreen functions, which comprises an electric sightseeing vehicle body, rectangular storage boxes are fixedly arranged on the front side and the rear side of the electric sightseeing vehicle body, rotating shafts are rotatably arranged in the rectangular storage boxes, and winding and unwinding rollers are fixedly arranged on the surfaces of the rotating shafts; and sunscreen cloth is wound on the surface of the take-up and pay-off roller. When a passenger sits on the electric sightseeing bus body, the servo motor drives the rotating shaft through the connecting part to drive the winding and unwinding roller to unwind and wind the sunscreen cloth, and the unwound and unfolded sunscreen cloth blocks sunlight, so that the sunlight cannot directly irradiate the skin of the passenger; the situation that the skin of a passenger is prone to sunburn due to the fact that the skin of the passenger makes direct contact with ultraviolet rays is avoided, the situation that the passenger feels hot and difficult to resist due to strong sunlight irradiation and feels sultry and dysphoria is avoided, and the situation that the passenger suffers from heatstroke due to direct sunlight irradiation is avoided. And the comfort of taking the sightseeing bus to appreciate scenery is improved.

The utility model relates to the technical field of stainless steel valve castings, and discloses a stainless steel valve casting with an emergency flow choking structure, which comprises a valve body, a valve core is arranged in the valve body, a channel is arranged in the valve core, the upper surface of the valve body is fixedly connected with a connecting block, a rotating groove is arranged in the connecting block, and the rotating groove is fixedly connected with the valve core. A driving rod is arranged in the rotating groove, the lower end of the driving rod rotationally penetrates into the valve body, the lower end of the driving rod is fixedly connected with the valve element, a first grip is fixedly connected to the outer portion of the driving rod, a connecting plate is arranged on the outer portion of the driving rod, and through cooperation of the connecting plate, a fixing ring, clamping teeth, a clamping groove and other structures, the first grip is fixedly connected to the outer portion of the driving rod; the stability of the valve element is effectively guaranteed, so that the situation that an internal flow choking structure is loosened is effectively avoided, the flow choking effect is guaranteed, the stability is high, and the practicability is high.

This utility model provides a clamping mechanism for internal hole sandblasting, comprising: a sandblasting box, the bottom of which is connected to a material receiving hopper, a shielding net fixedly connected to the upper end of the inner wall of the material receiving hopper, a control seat fixedly connected to the rear end of the inner wall of the sandblasting box, and a bearing seat fixedly connected to the bottom of the control seat; a driving unit, which is mounted on the control seat and the sandblasting box, and an assembly seat fixedly connected to the driving unit, with a sandblasting head mounted at the front end of the assembly seat; and a transmission unit, which is mounted inside the bearing seat and connected to the driving unit. This clamping mechanism for internal hole sandblasting, through the driving unit, controls the vertical movement of the sandblasting head, while simultaneously driving the fixed unit to rotate through the transmission unit, achieving uniform sandblasting of the workpiece's inner hole. During sandblasting, the sealing part dynamically seals the top of the workpiece's inner hole, reducing sand leakage and preventing equipment jamming and frequent shutdowns for cleaning.

The invention relates to the technical field of embankment project breach plugging and emergency rescue, and discloses a soil-to-stone permeable prism for rapidly assembling breach plugging and a construction method, the soil-to-stone permeable prism comprises a frame body, filler is arranged in the frame body, and the filler and the frame body form the permeable prism; the filler comprises a plurality of geotechnical bags, the geotechnical bags are filled with soil materials, the geotechnical bags form a reinforced body, and a gap is formed between the reinforced body and the inner wall of the frame body; filling the soil bag with a soil material to prepare a reinforced body; splicing the frame body and placing the reinforced body in the frame body to prepare a water permeable prism; and the prepared permeable prism is put into the breach for plugging operation. According to the soil engineering bag, soil materials are restrained in the bag to form a reinforced body, the effect of replacing stones with soil can be achieved, the reinforced body formed by the soil engineering bag and the frame body form a water prism, a breach of an embankment project is rapidly blocked, and the blocking effect is guaranteed.

The utility model relates to the technical field of refrigerator accessory equipment, and discloses a refrigerator ceiling lamp pre-embedded box mounting structure which comprises a first pre-embedded box, partition plates are fixedly mounted at the two ends of the interior of the first pre-embedded box, and the two ends of the interior of the first pre-embedded box are divided into two clamping cavities through the partition plates; and a second pre-embedded box is movably mounted in the first pre-embedded box. According to the utility model, based on the split type design of the first pre-embedded box and the second pre-embedded box, in combination with the elastic clamping connection of the V-shaped cross section of the tensioning plate and the clamping connection cavity, and in cooperation with the extension edge and the inclined guide surface of the fixed block, the rapid alignment and self-locking of the second pre-embedded box are realized, and meanwhile, the fixed clamping block and the movable clamping block can block the tail end of the limiting pin; according to the structure, through multi-stage elastic matching and guiding design, the installation steps are simplified, and loosening caused by vibration is effectively prevented through mechanical interlocking.

The utility model discloses a simple cable threading pipe plugging device, a plugging coating body with a cavity is plugged at a cable port, the plugging coating body comprises an outer coating layer, an asbestos cloth layer, an aluminum foil layer and an outer coating layer which are adhered from inside to outside, the outer coating layer is a combination layer of a PA layer and a PE layer, fireproof plaster is filled in the cavity of the plugging coating body, and the outer coating layer is a combination layer of a PA layer and a PE layer. The sealing device has the technical characteristics of simple structure, good sealing performance, long service life and the like.

The invention provides a composite electron transport layer, a preparation method thereof, a perovskite solar cell and application. The composite electron transport layer comprises a C60 layer, a SnO2 layer and an IWO layer which are stacked; the thickness of the SnO2 layer is larger than or equal to 60 nm, and the thickness of the IWO layer is smaller than or equal to 5 nm. The introduction of the thin IWO layer can improve the transmission rate of the electron transmission layer and improve the interface defect between SnO2 and the electrode, so that the battery has higher open voltage and stability. Moreover, the thick SnO2 layer can increase an electron transmission channel, so that photo-generated electrons can be transmitted to the electrode more quickly and efficiently, and the thin IWO layer can improve the light transmittance, increase the generation of photo-generated current, cooperate with the SnO2 layer, adjust the energy level matching between the perovskite layer and the electrode, promote charge transmission and reduce charge recombination. The perovskite solar cell prepared on the basis of the method shows excellent photoelectric conversion efficiency.

The utility model relates to pipeline plugging technical field especially air bag formula municipal administration pipeline plugging equipment, including air bag, the air bag is annular structure, the air bag middle part through -hole sealing connection has connecting rod, the front end of connecting rod is connected with the protection board, the protection board is circular structure, the air bag end part is connected with the air injection valve and exhaust valve and is provided with, the utility model prevents the condition of causing the air bag to be punctured to the effect of guaranteeing the plugging, prolongs the service life of equipment.

The utility model discloses a novel retaining ring of a vertical mill, and belongs to the technical field of retaining rings, the novel retaining ring comprises a material grinding plate, a connecting plate and four retaining plates, the connecting plate and the material grinding plate are perpendicular to each other and are fixedly connected, the four retaining plates are connected end to end to form an annular retaining coil, and the retaining plates and the connecting plate are detachably connected. The material grinding plate is designed to be of an integral structure, the material baffle and the material grinding plate are fixed through the connecting plate, and therefore on the basis that the material blocking effect of the material baffle is guaranteed, the overall strength of the material grinding plate is improved, and the material grinding plate is prevented from being damaged.

The utility model relates to the technical field of building construction, and discloses a dewatering well plugging structure in a foundation pit, which comprises a lower sealing plate, a sleeve is vertically arranged on the lower sealing plate, and a plugging hole communicated with the sleeve is arranged on the lower sealing plate in a penetrating manner; a water stop ring is arranged on the sleeve, and a plugging cover is arranged at the top end of the sleeve; a cushion layer is arranged on the lower sealing plate, a waterproof layer is arranged on the cushion layer, and a protective layer is arranged at the top end of the waterproof layer; the well mouth plugging device is simple in structure, convenient to install and operate and capable of greatly enhancing tightness of well mouth plugging, guaranteeing the sealing effect and meanwhile improving the construction efficiency.

The utility model relates to the technical field of leather processing, in particular to a conveying assembly for a surface processing machine, which comprises a support and a fence device, a round roller is rotatably connected to the upper surface of the support, a motor is fixedly connected to one side of the support, the driving end of the motor is fixedly connected with the round roller, and the fence device is arranged on the surface of the support and comprises a sliding rail. The sliding rail is fixedly connected with the support, the surface of the sliding rail is connected with a sliding sleeve in a sliding mode, the upper surface of the sliding sleeve is fixedly connected with baffles, the two ends of the sliding sleeve are rotationally connected with round wheels, the number of the baffles is two, the two baffles are symmetrically arranged, and one side of each baffle is fixedly connected with a traction rope. Transverse constraint is provided for leather conveying, it is ensured that the leather is kept stable in the conveying process, and the problems that due to deviation, surface treatment is uneven, and the defective rate is increased are solved.

The application discloses a water-absorbing and swelling rubber plugging agent, a plugging slurry and a plugging construction method thereof. The water-absorbing and swelling rubber plugging agent comprises the following components: water-absorbing and swelling rubber particles, multi-grade rigid plugging particles and fiber reinforced materials. The plugging slurry comprises base slurry and the water-absorbing and swelling rubber plugging agent. The plugging slurry adopts modified rubber particles with controllable swelling characteristics as a core plugging component, cooperates with multi-grade rigid particles, can form a stable self-adaptive plugging layer in a crack, effectively solves the problem of instability of the plugging layer under the respiration of the crack, and significantly improves the plugging pressure-bearing capacity and long-term plugging effect.