28 results about "Hydraulic action" patented technology

The disclosure provides a water outlet device, including a body, an impeller, a speed reducing member and a switching member. When in use, water enters a water passing chamber, and the impeller begins to rotate around a first axle line due to a hydraulic action, and at the same time drives the speed reducing member to revolve. Since outer gear teeth of the speed reducing member are engaged with inner gear teeth, the speed reducing member further rotates around a second axle line during the revolution, and the number of teeth of the outer gear teeth is less than the number of teeth of the inner gear teeth, thereby achieving a function of speed reduction. During the revolution of the speed reducing member, a driving shaft slides in a driving groove and abuts against a groove wall of the driving groove.

This utility model provides a water circuit three-way switching valve, including: an electric valve and an internal flow guiding and limiting component. The lower end of the electric valve is provided with a valve body for controlling the switching of the water circuit three-way. The right side of the electric valve is provided with an internal flow guiding and limiting component for fastening and limiting the flow space inside the second flow guide pipe. Compared with the prior art, this utility model has the following beneficial effects: When switched to the lateral flow guiding state, the water flows into the valve body through the lateral flow guide port. The upper support rod compresses the spring under hydraulic action, so that the limiting support block and the top shell are axially fixed. When the electric valve stops working, the spring resets and pushes the limiting piston to close the lower flow guide port. The spherical cooperation between the upper support seat and the lower support ball seat eliminates lateral movement. At this time, the internal flow guiding and limiting component is in a self-locking state, thereby blocking the water inside the second flow guide pipe through the limiting piston and fastening and limiting it.

This application relates to a hydraulically controlled water supply on / off device and its control method. The device includes a pressure reducing valve, a pilot valve, and a solenoid valve. The solenoid valve is disposed on the connecting pipeline between the outlet side of the pilot valve and the outlet side of the pressure reducing valve. When the solenoid valve is open, the valve plate of the pressure reducing valve separates from the valve body under the pressure of the water at the inlet side of the pressure reducing valve, and the pressure reducing valve opens. When the solenoid valve is closed, the pilot valve controls the valve plate of the pressure reducing valve to move downward, and the pressure reducing valve closes. This device controls the opening and closing of the solenoid valve by receiving the unit's operating status signal to isolate or open the pilot valve channel, thereby automatically controlling the opening and closing of the pressure reducing valve using hydraulic action. This achieves reliable on / off control of the technical water supply system, effectively avoiding the opening and closing failures caused by pressure buildup in traditional electric isolation valves. Furthermore, by replacing the high-energy-consuming electric valve with a low-power solenoid valve, the system's energy consumption is significantly reduced.

The invention relates to the technical field of water conservancy project equipment, in particular to a water conservancy project water gate and pump station combined flood drainage device which comprises a water gate mechanism used for discharging water in a dam; the two pump station mechanisms comprise dam piers which are arranged on the two sides of the water gate mechanism and internally provided with water storage tanks, water inlets communicated with the water storage tanks are formed in the dam piers, and water pumping assemblies are installed in the water storage tanks; the protection mechanism is used for cleaning impurities at the water inlet; when water in the dam is drained, the pump station mechanism can be driven to be started, and accumulated water entering the pump station mechanism can be drained through the hydraulic action; meanwhile, when the pump station mechanism starts to work, the protection mechanism can be driven to start to work through the hydraulic action, and impurities accumulated at the water inlet of the pump station mechanism are cleaned away; cooperative cooperation of the water gate mechanism and the pump station mechanism is achieved on the whole, impurities can be prevented from blocking a water inlet of the pump station mechanism, and the problem of energy loss caused by independent driving operation of the water gate and the pump station in the flood drainage process can be solved.

The invention discloses a hydraulic segmented grooving device for a dam diaphragm wall, which relates to the technical field of diaphragm wall forming and comprises a driving machine for providing a power source and driving a movable grab bucket to execute opening and closing operation; the movable grab bucket is driven by a driving machine and used for grabbing and lifting a soil body, and a thickness detection change mechanism is integrated at the grab tip part of the movable grab bucket so as to adapt to complex stratum conditions; the hydraulic driving part is connected to the hinged part of the movable grab bucket and used for controlling the opening and closing actions of the grab bucket through the hydraulic action and adjusting the digging force; the thickness detection change mechanism is used for sensing the resistance difference of soil layers on the two sides in real time and outputting a feedback signal according to soft and hard soil distribution to assist attitude adjustment; and the posture correction mechanism is used for adjusting hydraulic flow balance and automatically adjusting the inclination state of the grab bucket when the resistance of the soil layers on the two sides is not uniform, and the grooving perpendicularity is maintained.

The invention discloses a bidirectional anchor and a using method thereof. The bidirectional anchor comprises an upper central pipe, an anchor setting locking mechanism, an anchoring mechanism and an anchor releasing mechanism, wherein the upper central pipe is sleeved with the anchor setting locking mechanism and the anchoring mechanism, and the anchor releasing mechanism is connected with the upper central pipe. The anchoring locking mechanism is used for moving downwards under the hydraulic effect and pushing the anchoring mechanism to expand in the radial direction to be anchored with an external sleeve. In the state that the upper central pipe is lifted upwards, the anchor releasing mechanism shears off an anchor releasing shear pin connecting the upper central pipe and the anchoring mechanism so as to release the limitation of the anchoring mechanism on the upper central pipe; or in the rotating state of the upper central pipe, the limiting sleeve of the anchor releasing mechanism is pushed to move downwards so as to release the limiting between the anchoring mechanism and the anchor releasing mechanism, and then the limiting of the upper central pipe is released; and after the upper central pipe is unlimited, the upper central pipe is lifted to drive the anchoring locking mechanism to move upwards, and then the anchoring mechanism and the casing pipe are driven to be unanchored. The two-way anchor is provided with more than one anchor releasing mode, and the clamping releasing reliability of the measure pipe column is improved.

The utility model discloses an isolating bush for magnetic force pump, including sleeve and the flange disc of sleeve one end, the sleeve is inside and outside double -layer structure, and the inside and outside layer of sleeve has the clearance and forms the flow passage between, and the flow passage is provided with the flow guide member for guiding the flow in, the flange disc is equipped with the annular cavity that communicates with the flow passage, the periphery of annular cavity is linked with the movable cavity, the utility model discloses utilize the dynamic monitoring mechanism of leakproof float, through the spiral septum in flow passage guide leakage medium to enter annular cavity, push leakproof float and float under the hydraulic action radially, and the guide rod is stretched out from the flange disc through -hole, and the warning mark (such as color mark or magnetic trigger device) is combined to realize visual real -time early warning, need not external monitoring equipment, and the axial displacement of guide rod can be directly exposed to the external environment, and the operator can judge the isolating bush breakage position and take the measures quickly, and relative to prior art can realize the monitoring of the inner layer breakage of isolating bush in the closed environment.

The invention relates to a preparation method of high-heat-resistance precoated sand applied to the field of castings, which is characterized in that zinc borate is added into crude sand, and the heat resistance of the precoated sand is effectively improved by utilizing the characteristic that the zinc borate forms a glassy state inorganic coating at high temperature; and an automatic weighing and feeding device is additionally arranged on the efficient runner wheel sand mixer to effectively improve the sand mixing effect, a magnetic disc intermittently repels a full magnetic disc under the driving action of a stand column, so that two porous leakage plates move oppositely under the hydraulic action, auxiliary materials are intermittently and uniformly discharged, the sand mixing effect can be improved, and the sand mixing efficiency is improved. In addition, in the falling process of various auxiliary materials, the auxiliary materials are further fully premixed through the rebounding device and the dispersing cone, the mixing time of the auxiliary materials and crude sand is effectively saved, and the sand mixing effect can be further effectively improved.

The present invention relates to an experimental device and method for studying the development process of underwater foundation scour and the protective performance of structures, comprising the following steps: connecting a flow channel to an experimental box, installing a combined wave-making gate on the flow channel; loading a foundation and marking dot arrays and grid lines in the experimental box, laying a scour protection structure on the foundation surface, and installing the foundation; opening the combined wave-making gate to create a wave effect; activating a vertical loading module to apply a load to the foundation; and recording the experimental process by photographing and videotaping. The present invention has the beneficial effects of being able to simulate the effects of water scour on the response of foundation structures under various working conditions, such as unprotected foundations being scoured by water, protected foundations being scoured by water, and scour protection structures of different shapes and structures; the alternating flow channel system is provided with a combined wave-making gate, which can simulate the multiple composite hydraulic environments at the foundation and the foundation.

The utility model relates to the technical field of hydraulic control, in particular to a palm vehicle hydraulic control system. The system comprises a main control system and a pilot control system, the main control system comprises a main control valve, a first gear pump and a second gear pump, the first gear pump and the second gear pump are connected to an oil tank, a left loop and a right loop are arranged in the main control valve, and the first gear pump and the second gear pump are connected to the two loops respectively for oil supply; each control link is connected to the working cavity of the corresponding execution element; a double-pump hydraulic system is adopted, seven hydraulic actions of the palm vehicle are uniformly distributed on two hydraulic pumps, the load fatigue of a single-pump system is reduced, the service life of the pumps is prolonged, the faults of the hydraulic pumps are reduced, and the fault-free service time of a user is greatly prolonged; hydraulic actions controlled by the first gear pump and the second gear pump can act simultaneously to complete composite motion, and the defects that a single-pump hydraulic system cannot complete hydraulic composite motion and the working efficiency is reduced are overcome.

The utility model relates to the field of highway engineering, and discloses a highway subgrade anti-landslide device, which comprises a water collecting tank and a drainage tank which are respectively arranged at the top and the bottom of a slope, the water guiding grooves are obliquely laid on the slope surface of the side slope and used for communicating the water collecting grooves with the drainage grooves, the supporting frames are fixedly installed between every two adjacent water guiding grooves in the horizontal direction, water guiding openings are formed in the side walls, close to the supporting frames, of the water guiding grooves, and the supporting frames are used for guiding water on the slope surface into the water guiding openings. The water collecting tank can effectively collect surface runoff in the rainfall period, the supporting frame can guide rainwater on the surface of the side slope into the water guiding groove, the rainwater collected by the water collecting tank and the supporting frame is jointly discharged into the drainage groove through the water guiding groove, and therefore the situation that the runoff directly washes the slope surface is avoided, and the problems of soil softening and roadbed instability caused by the hydraulic action are solved.

The disclosure provides a water outlet device, including a body, an impeller, a speed reducing member and a switching member. When in use, water enters a water passing chamber, and the impeller begins to rotate around a first axle line due to a hydraulic action, and at the same time drives the speed reducing member to revolve. Since outer gear teeth of the speed reducing member are engaged with inner gear teeth, the speed reducing member further rotates around a second axle line during the revolution, and the number of teeth of the outer gear teeth is less than the number of teeth of the inner gear teeth, thereby achieving a function of speed reduction. During the revolution of the speed reducing member, a driving shaft slides in a driving groove and abuts against a groove wall of the driving groove.

The invention discloses a dynamic water flow adjusting system for river bank slope protection, and belongs to the technical field of water conservancy projects and slope protection. The system comprises a disorderly-curled three-dimensional net-shaped structure, a curlable hard film covering the surface of the disorderly-curled three-dimensional net-shaped structure, a reel, a pull rope, an electric motor, a guide pressing strip and an automatic control system. In a normal state, the hard film is stretched and unfolded through the electric motor to cover the net-shaped structure; when the water flow is increased, the system releases the pull rope according to a monitoring signal, the hard film is automatically wound under the action of the torsional spring, and the net structure is exposed to enhance disturbance and impact reduction effects; and when the water flow is relatively large, the net-shaped structure bulges outwards under the action of backflushing hydraulic power to form an arc surface, so that the protection capability is further improved. The system has the advantages of dynamic response, low energy consumption, high structural adaptability and the like, and is suitable for intelligent anti-scour protection of side slope areas such as river channels and lakebanks.

The invention relates to the technical field of casing windowing sidetrack drilling, and provides a double-layer casing hydraulic extrusion windowing tool and windowing method.The double-layer casing hydraulic extrusion windowing tool comprises an abrasive perforator which is installed on the surface of one side of a windowing device and used for emitting high-pressure water flow towards an oil-string casing at a set angle and forming multiple sets of perforation holes, and the area between every two adjacent sets of perforation holes is a groove area; and the extrusion collapse column is used for extruding the groove area at a set angle until the extrusion collapse column enters a stratum on the outer side of the oil-string casing. According to the device, abrasive perforators are installed on a window opener, extrusion columns are installed between the abrasive perforators, multiple rows of perforation holes are formed in the abrasive perforators during window opening, and a groove area is formed after transverse rows of perforation holes are formed in an oil-string casing, a cement sheath, an intermediate casing and a stratum. Materials of an oil-string casing, a cement sheath, an intermediate casing and a stratum are extruded towards the grooves in the two sides through the hydraulic effect, the oil-string casing, the cement sheath, the intermediate casing and the stratum are rapidly fester and fall off, and a needed sidetrack drilling window can be easily formed in the follow-up work.

The application discloses a control method and system of hydraulic locking in a movable mold plate and an injection molding machine. The control method comprises the following high-pressure locking steps: in response to a high-pressure locking signal, the current state of the rotary shutter is obtained and determined to be an open state, the rotary shutter is driven to rotate, the open state is switched to a closed state, the hydraulic operation in the movable mold plate is driven, when the push rod is pressed on the rotary shutter, the movable mold plate is reversely pushed towards the mold direction with the push rod as the support and / or an acting force is generated, the real-time locking force value of the current locking force is obtained when the hydraulic acting force is continuously increased, and when the real-time locking force value meets the required locking force parameter, the current hydraulic operation is maintained to perform high-pressure locking. The application controls the state switching of the rotary shutter, provides hydraulic action under the locking cylinder of the movable mold plate, takes the push rod as the support, and directly converts the hydraulic acting force in the movable mold plate into the locking force applied to the mold.

The present invention belongs to the technical field of couplings, and specifically relates to a hydraulic expansion coupling structure and system for improving the pressure measurement efficiency. The coupling structure includes a transmission shaft, an inner sleeve, an outer sleeve, an oil storage cavity, and a pressure sensor. The transmission shaft is located at the center of the hydraulic expansion coupling. The inner sleeve is arranged outside the transmission shaft, and the inner surface of the inner sleeve cooperates with the transmission shaft to achieve expansion through hydraulic action. The outer sleeve covers the outside of the inner sleeve, and an oil storage cavity is formed between the outer sleeve and the inner sleeve. The oil storage cavity is arranged between the outer sleeve and the inner sleeve, and the oil storage cavity communicates with the outside through a through hole penetrating the outer sleeve, and the pressure sensor is installed in the through hole. Among them, the middle part of the oil storage cavity is a narrow area, and both ends of the oil storage cavity are wide areas. Through the design of the slow transition between the narrow area in the middle and both ends of the oil storage cavity in the present invention, the pressure wave is concentrated and quickly transmitted to the pressure sensor, shortening the response time of the pressure signal, reducing energy loss, and ensuring the real-time performance and accuracy of pressure data.

The invention provides a transparent sand EICP grouting test device considering pore solution seepage and a test method thereof. The device comprises a grouting diffusion device and a laser imaging device. According to the device, a multicolor laser irradiation technology is adopted, and grouting liquid, pore water and sand particles have differentiated color development characteristics in a transparent model box through the synergistic effect of specific-wavelength laser, solution fluorescence labeling and fluorescent pigment on the surface of sandy soil. PIV and PTV technologies are adopted to observe the change of slurry flow diffusion and slurry flow velocity, and PLIF technology is adopted to observe the precipitation process of calcium carbonate in soil particle pores. On the basis of test data, pore structure changes can be analyzed, the calcium carbonate precipitation amount can be quantified, the spatial and temporal distribution rule of calcium carbonate precipitation and the particle release rule under the hydraulic action are disclosed, a theoretical basis is provided for optimizing the shield tunnel biological grouting technology, and a new thought is provided for preventing and treating water leakage of a water-rich sand layer shield tunnel.

The utility model discloses a water conservancy slope protection structure, which relates to the technical field of water conservancy slope protection appliances and comprises a dam, a drainage channel is arranged in the dam, a filter plate is mounted at the top end of the drainage channel, a reinforcement cage is mounted on the top surface of the lower end of the dam, and an ecological layer is arranged on the upper portion of the dam. The gravel blocks are placed in the reinforcement cage, so that impact abrasion of water flow to the bottom end of a dam is relieved conveniently, the protection effect of the slope protection structure is guaranteed, and the service life of the device is prolonged; through cooperation of an inclined buffer plate and a spring, the inclination angle of the buffer plate is increased conveniently when the dam is impacted by water pressure, then the impact of water flow on the dam is absorbed, the impact can be relieved through springback of the spring, and through reinforcement of cement cotton, the situation that stones on the surface of the slope are loosened and concrete is peeled off can be effectively avoided; finally, the problem that the protection effect of the slope protection structure is reduced due to the fact that stone loosening, concrete peeling and the like easily occur on the slope protection surface under the long-term hydraulic action of high-speed water flow, strong waves and the like is solved.

This utility model discloses a modular block for river ecological slope protection, including a block body and pins. The block body includes a central ring, with a connecting block fixedly connected to the right side and front of the central ring, a connecting groove fixedly connected to the left and rear of the central ring, first interlocking teeth fixedly connected to the left and right sides of the bottom of the central ring, second interlocking teeth fixedly connected to the front and rear sides of the bottom of the central ring, an anti-slip block fixedly connected to the rear of the top of the central ring, and a reinforcing ring fixedly connected inside the central ring. The connecting block on the right side corresponds to the connecting groove on the left side. This structure enhances the interlocking force between the block and the contact surface, preventing the block from being easily washed away under severe hydraulic forces. Dedicated leverage points reduce the risk of people slipping and falling into the water at the slope protection location.

The utility model belongs to mineral processing technical field especially is involved a kind of drum type ore washing device, including the drum of overall inclination setting, drum inside is divided into feeding section, fine washing section, dehydration section three operation zones along the axial direction, the inner wall of feeding section is equipped with rubber lining and longitudinal guide trench, the inner wall of fine washing section is equipped with wave type lining, the inner wall of drum is equipped with helical plate of pitch decrement, fine washing section corresponding wave trough position and the inner wall of dehydration section are provided with filter hole, the axial both ends of drum are equipped with the rotary connection structure of rotary ring and support ring, the centre of drum is equipped with segmented water supply device, including low-pressure main pipe and high-pressure main pipe, respectively configure sector-shaped spray head to realize differentiating water supply. Gradient washing is realized by segmented differentiating design, pitch decrement controls material residence time, and double-pipe segmented water supply system provides accurate hydraulic action, to improve ore washing efficiency and washing purity.

The invention discloses a jet flow auxiliary system for underwater screw anchor installation, relates to the technical field of ocean engineering foundation installation, and solves the technical problems that traditional screw anchor installation depends on large equipment, installation is difficult due to super-large torque, and popularization of the traditional screw anchor in ocean engineering is restricted. The system comprises a fluid pump, a high-pressure fluid rotating structure and a hollow spiral anchor rod. A fluid inlet of the fluid pump is connected with the fluid storage container, a fluid outlet of the fluid pump is connected with a fluid inlet of the high-pressure fluid rotating structure, the top of the high-pressure fluid rotating structure is connected with the spiral anchor driving device, and a sealing output connector is installed at the bottom of the high-pressure fluid rotating structure. The hollow spiral anchor rod is inserted into the sealed output connector, and a plurality of jet flow spraying holes are formed in the bottom of the hollow spiral anchor rod. The end penetration resistance and the side wall friction resistance of the spiral anchor are reduced through the hydraulic action, and therefore the torque needed in the installation process of the spiral anchor is adaptively reduced.

According to the scheme, the method comprises the steps that the apparent strength of the drilling rock is determined based on parameters of a drill bit, wherein the apparent strength of the drilling rock represents the comprehensive strength of the inherent strength of the rock broken by the drill bit in the drilling process and the strength strengthened by the shaft bottom pressure difference effect on the rock; underground mechanical specific energy is determined, wherein the underground mechanical specific energy represents mechanical specific energy under the mechanical and hydraulic action in the drilling operation; determining a standard well drill bit wear coefficient based on the drilling rock apparent intensity and the underground mechanical specific energy; and determining the real-time drill bit wear level of the current well based on the drill bit wear coefficient of the standard well. According to the scheme provided by the embodiment of the invention, while-drilling calculation and analysis on the abrasion loss and grade of the drill bit in the drilling process are realized, and the problem of accuracy caused by dependence on data volume in the existing drill bit molding calculation method is solved.

The invention relates to the field of bending resistance testing of steel pipe joints, and discloses a testing device for bending resistance testing of a full-self-anchoring steel pipe joint, and the testing device comprises a transparent water tank, a slidable loading clamp, a stirring assembly, a detection mechanism, a circulation mechanism and a fixed seat, the input end of the circulation mechanism is connected to the rear end face of the transparent water tank, and the input end of the circulation mechanism is connected to the rear end face of the transparent water tank; the output end of the circulating mechanism is arranged above the stirring assembly, controllable bending load can be applied to test the mechanical property of the joint, the dynamic hydraulic action in a real marine environment can be synchronously simulated, and state in-situ monitoring of key parts of the joint is realized through a built-in rotation detection mechanism; the authenticity of the test result and the engineering guidance value are improved, the loading clamp achieves controllable displacement in the direction perpendicular to the axis of the connector through the sliding assembly, the bending moment load can be accurately applied, and the structural strength and deformation characteristics of the full-self-anchoring steel pipe connector under transverse deformation are effectively evaluated.

The invention provides a multifunctional simulation test system for stratum leakage collapse under hydraulic action. The multifunctional simulation test system comprises a test bed, a water inlet unit and a quality monitor. A homogeneous or heterogeneous stratum can be laid on the test box, the top acting cover can adjust the water inlet state, and the base is provided with a leakage opening adjusting unit used for controlling the leakage flow. The water inlet and outlet pipe is arranged around the test box to simulate the lateral seepage influence, and the side wall scale strip displays the water level in real time. The acting cover is provided with a rainfall adjusting mechanism, the rainfall angle and range can be adjusted, and different rainfall conditions can be simulated. The leakage opening adjusting unit comprises square or round leakage openings capable of being adjusted synchronously, and leakage dynamic changes are controlled. The system is equipped with a high-speed camera to record the leakage collapse process, real-time quality change data is obtained through a quality monitor, a quality time history curve is output, and accurate experiment support is provided for stratum leakage collapse research.

The utility model discloses a cutter guide sleeve device with an automatic phase alignment function, and belongs to the technical field of cutter guide sleeves. A base is arranged at the bottom of the shell, the guide sleeve is rotationally connected with the shell on the periphery and the base through a bearing, a guide threaded groove is formed in a cutter inlet of the guide sleeve and communicated with the key groove, an end cover a and an end cover b are arranged at the two ends of the shell, and the top of the base is located between the end cover a and the end cover b. The hydraulic locking device has the advantages that a hydraulic locking device does not need to be used, the structure is simplified, occupied space is reduced, extra hydraulic actions are omitted, and equipment takt time and cost are greatly saved.

The utility model discloses a water outlet device which comprises a body, a rotating piece and an operating piece. A water distribution hole is formed in the rotating part, the water inlet end of the water distribution hole is communicated with the water inlet channel, and the water outlet end of the water distribution hole is suitable for being communicated with the first water outlet cavity when corresponding to the first water outlet cavity; the operating part is suitable for moving at the second position relative to the body, and when the operating part moves at the second position, the operating part is located on the rotating part, so that the rotating part can continuously rotate under the hydraulic action, the water distribution hole corresponds to or does not correspond to the first water outlet cavity, the first water outlet cavity can supply water to the water outlet hole and stop water, the state of the water outlet hole is continuously changed, and the experience is improved. The operating part is further suitable for moving at a first position relative to the body, and when the operating part moves at the first position, the operating part is located on the rotating path of the rotating part to block the rotating part and enable the rotating part to stop at the first stop position, so that the water distribution hole corresponds to or does not correspond to the first water outlet cavity, at the moment, the rotating part does not rotate any more, and the requirement for continuous use of a user in a certain state is met.

The utility model relates to the technical field of salvage tools, and provides a downhole cylindrical fish salvage tool, comprising an upper joint, a lower pressure cylinder and an outer cylinder axially connected in sequence, an oil chamber being provided between the lower pressure cylinder and the outer cylinder; a piston, the tail end of the piston being adapted to be installed in the lower pressure cylinder, and the front end of the piston extending from the lower pressure cylinder and the outer cylinder; a lifting cylinder, the lifting cylinder being connected to the piston; a slip, the lifting cylinder being connected to the slip, and the front end of the lifting cylinder being against the opening of the slip; when the upper joint and the lower pressure cylinder move downward to squeeze the oil chamber, the oil pressure drives the lifting cylinder to move upward to push the slip outward. The utility model makes it more convenient to salvage fallen fish, and after the salvage is completed, the slip and the lifting cylinder can be easily restored to their initial state.

The invention discloses a hydraulic triggering type telescopic anchoring anchor rod and a geotechnical engineering supporting method, and belongs to the technical field of geotechnical engineering supporting. The anchor rod mainly comprises a blocking piece, a multi-stage rod body, an anchor head and a sliding block. The core is that the multiple stages of rod bodies are mutually overlapped and sleeved through the grooves and the bosses, so that great contraction can be realized; a sliding block mechanism is arranged in the rod body, a sliding block can move from an initial locking position to a final locking position under the hydraulic effect generated by grouting, in the process, the inner-layer rod body is pushed to extend inside and outside, telescopic inserting rods on the two sides of the inner-layer rod body are driven to pop out and be clamped in anchoring holes of the rod body, and an irreversible rigid mechanical anchoring point is formed. Grouting pressure is ingeniously used as trigger power, active stretching and final rigid locking of the anchor rod are achieved, the anchor rod has the comprehensive advantages of being convenient and fast to transport, efficient in installation, high in anchoring force and good in large-deformation adaptability, and the anchor rod is particularly suitable for supporting soft broken rock masses.