224 results about "Piezometer" patented technology

The invention provides a geologic environment simulation experiment device, which comprises a machine stand, a water storage tank, a simulation case with its lower reach end hinged with the machine stand, a rainfall case installed at the top of the machine stand, a geologic body simulation cavity in the simulation case, a water supply cavity and a water discharge cavity that are respectively positioned at the upper and lower reach ends of the geologic simulation cavity and are communicated to the geologic body simulation case, a conatant head water level overflow case and a discharge overflow case that are respectively positioned at the external side end of the upper and lower reaches of the simulation case, a conatant head overflow cavity that are respectively communicated to the water storage tank and the water supply cavity via a pipeline and a conatant head overflow backwater cavity that is communicated to the water storage tank via an overflow backwater pipe are positioned in the conatant head water level overflow case; at least three groups of piezometer are mounted vertically on the wall of the simulation cavity; one end of a piezometer hose that is communicated to the bottom of the piezometer passes the a simulation wall and extends into the simulation cavity. Therefore, the invention is able to simulate the formation and control of geologic disaster as well as the rules for the motion of groundwater.

The invention discloses a simulation test system integrating the start, movement and accumulation of debris flow, including an instrument table, a water supply system, a control center, a pipeline and a water distribution system, a receiving line, an electromagnetic flowmeter, a water guide pipe, and a raindrop simulation system. Sprinklers, rain sensors, source tanks, porometers, matrix suction probes, soil moisture probes, flow tanks, flow rate test devices, impact test devices, stacking plates, tailing tanks, lifting systems and digital acquisition systems. The invention can combine the two types of mud-rock flow caused by rainfall and water erosion for research, and simulate the real rainfall process; it can effectively monitor the key parameters in the mud-rock flow experiment process, and simulate the whole process of mud-rock flow initiation, migration and accumulation.

The invention relates to a large-size rock fracture permeability test system and a measuring method thereof. The large-size rock fracture permeability test system comprises a self-circulation water supply tank, a constant-pressure water tank, a water inlet end cap, a water outlet end cap, a horizontal rock fracture, pitot piezometer tubes and a constant water head water collecting system, the self-circulation water supply tank is connected with the constant-pressure water tank through a water supply tube and a water return tube, the water inlet end cap is connected on the constant-pressure water tank, two ends of the horizontal rock fracture are abutted to the water inlet end cap and the water outlet end cap respectively, the pitot piezometer tubes are arranged on the water inlet end cap and the water outlet end cap respectively, and the constant water head water collecting system is connected with the water outlet end cap. The large-size rock fracture permeability test system is simple in structure, convenient to operate and high in test accuracy and can make permeability test research on rock fractures with series of sizes (10cm*10cm-100cm*100cm), and change laws of rock fracture permeability changing along with the sizes of the fractures are analyzed.

The invention relates to a test device and a test method for penetration clogging of soil. A water draining bottom barrel, a charging barrel and a water feeding top barrel are arranged above a test tower bracket; a pore water pressure monitoring hole is formed in the lateral surface of the charging barrel; a pore water pressure sensor is arranged in the pore water pressure monitoring hole and is connected with a computer; a three-way valve structure comprising a penetration clogging specimen container tube, a water return control valve, a feeding inlet vale and a water conveying valve is arranged at the upper end of the water feeding top barrel; and a high-pressure water tank is formed by connecting a water supplying pipe with a water pump in a sump tank. Under the condition that water is continuously supplied, the feeding of the penetration clogging specimen is finished, the continuous process of a penetration clogging specimen test is realized and a traditional measuring mode by adopting a piezometer tube is changed. Multi-section seepage electronic monitoring record and data processing are adopted so as to visually reflect the correlation among the particle size of the penetration clogging, the pore water pressure and the seepage flow can be visually reflected. The influence on the observation of the penetrability of a loose medium under the condition of a penetration clogging action is overcome and reliable scientific reference for a large-scale engineering design is provided.

The invention relates to a wireless safety monitoring system for a dam, which comprises a monitoring point module for collecting field data and a remote monitoring station center in communication link with the monitoring point module, wherein the monitoring point module comprises a power supply module for supplying power to the monitoring point module, a sensor used for monitoring actual seepage line data in a piezometer tube, a CPU connected with the sensor and used for receiving and processing the data, and a lower communication module connected with the CPU and used for communicating with the remote monitoring station center by a GPRS or GSM mode, wherein the power supply module comprises a solar panel, a charge control circuit and a storage battery which are connected in sequence. The invention is supplied with power by solar energy, adopts the GPRS or GSM communication mode, does not need to be supplied with with commercial power and has high real-time monitoring performance, interference resistant capability and low investment cost. The invention is also provided with a sensor cleaning component for maintaining the accuracy of data and a water level alarming component for further knowing the safety condition of the dam.

An automatic hydrologic parameter measuring system for a river flow comprises a supporting installed below a bridge surface; a waterproof box connected to a steel rope for suspending a weight; another end of the rope extending downwards out of the waterproof box for retaining the weight; a waterproof electric wire winding around the steel rope for transferring signals to the signal processor; a water pressure meter installed in a hollow space of the weight; when the weight being in water, the water pressure meter starts the measuring process; after the weight reaches to the riverbed, the water pressure is unchangeable; and a water pressure meter installed in a hollow space of the weight; when the weight being in water, the water pressure meter starts the measuring process; after the weight reaches to the riverbed, the water pressure is unchangeable.

The invention relates to a confined water and phreatic water compound simulation experiment device, comprising a water storing tank and a simulation tank, wherein an organic glass tank body is obliquely arranged in the simulation tank, the top of the elevating end of the organic glass tank body extends out of the simulation tank to form a simulated river feeding zone, the plunging end is provided with a rising water wall, a confined aquifer is arranged in the organic glass tank body, and a phreatic aquifer is arranged on a waterproofing top plate of the organic glass tank body between the top of the elevating end and the rising water wall of the organic glass tank body; one end of a simulated water drawing well tube sequentially passes through the phreatic aquifer, the confined aquifer and the simulation tank and extends into the water storing tank, a plurality of holes communicated with the confined aquifer are arranged on a wall at the confined aquifer, and the lower ends of at least four confined water level piezometer tubes sequentially pass through the phreatic aquifer and the confined aquifer and are fixed on a waterproofing bottom plate. The invention has the advantage of reasonable structure, can demonstrate the feeding, running-off and draining features and the complementary relationship of the confined water and the phreatic water, and provides an effective measure for relevant tests and researches on the confined water and the phreatic water.

An induced flow fan assembly is provided with a pressure tap arrangement at the outlet for measuring the output flow of the assembly. The pressure sensing arrangement includes two rings of piezometers mounted to an outlet windband, one ring at the wider upstream end of the wind band and the outer at the narrower downstream end. Data regarding the pressure differential across the windband is acquired electronically and used to determine total output flow of inlet and entrained air streams. The fan assembly is suitable as an exhaust assembly for expelling contaminated air from a building.

The invention discloses a multifunctional fluid mechanics experimental device. The multifunctional fluid mechanics experimental device comprises a water source, a reynolds experiment pipe, a Bernoulli experiment pipe, an on-way resistance pipe, a local resistance pipe, a valve local resistance measuring pipe, a pitot pipe, a Venturi meter, an orifice plate flowmeter, a piezometer pipe, a measuring groove, selection valves and adjusting valves; the reynolds experiment pipe, the Bernoulli experiment pipe, the on-way resistance pipe, the local resistance pipe, the valve local resistance measuring pipe, the Bernoulli experiment pipe, the venture meter and the orifice plate flowmeter form into six testing pipe sections in a parallel mode; the selection valves are installed at inlet sections of the experiment pipe sections; the inlet sections of the experiment pipe sections are connected with a water source through the selection valves; the adjusting valves are installed at outlet sections of the experiment pipes; the outlet sections of the experiment pipes are connected with the measuring groove through the adjusting valves. According to the multifunctional fluid mechanics experimental device, the separated experiment pipelines are integrated in one experiment device, frequent assembling and disassembling is avoided, leakage is reduced, the experiment pipelines are clear at a glance and not easy to mix, and user understanding of the experimental principle is facilitated.

The invention relates to a measuring device, in particular to a portable coal powder sampler which comprises a negative pressure generator, a sampling gun, a cyclone separator connected with the sampling gun through the pipeline and a sample storage tank mounted on the cyclone separator. The portable coal powder sampler is characterized in that a piezometer tube and a sampling tube are mounted in the tubular sampling gun, wherein the sampling tube is connected with the air intake of the cyclone separator through the pipeline, the air outlet of the cyclone separator is connected with the negative pressure opening of the negative pressure generator, the air intake of the negative pressure generator is connected with the compressed air through an electrical control valve, the exhaust inlet of the negative pressure generator is communicated with the tubular sampling gun through the pipeline, both the piezometer tube and the sampling tube are provided with a pressure sensor and a blowback pipe, the blockback pipes mounted on the piezometer tube and the sampling tube are communicated with the air source of the compressed air through a valve, and the two pressure sensors mounted on the piezometer tube and the sampling tube and the electric control valve are connected electrically with a pressure control device. The invention can achieve the purpose of sampling accurately in constant speed.

The invention discloses a gravel filling and simulation system and method in a hydrate mining well pipe. The simulation system includes a test well subsystem, a simulation and filling subsystem and afilling quality detecting subsystem. A wellhole pipe column is installed according to an actual well structure, and filling operation simulation and filling quality detecting are conducted; not only can be full-scale simulation conducted on characteristics of an actual gas hydrate mining well reservoir and in-pipe gravel filling operation under limitation of the well structure, but also whole-process monitoring and evaluating can be conducted on the construction quality of the filling operation and adaptation of the filling operation under a long-term hydrate formation condition, so that the aim of optimizing construction parameters and process design parameters is achieved. By combining the introduction of a radial-flow flow divider, a point piezometer and an acoustic imaging logging system, the measurement effect is true and credible, the simulation result is closer to the difference construction, the reference is high, and the gravel filling and simulation system and method is suitable for gravel filling processes in different well structures and effect monitoring simulation of gravel filling. The gravel filling and simulation system and method not only provides new ideas for adaptability evaluation of the gravel filling operation of a marine shallow gas hydrate mining well, but also provides gist for a best construction scheme and best technological parameters of the gravelfilling operation.

A rheometer for measuring non-Newtonian fluids is disclosed. The rheometer includes capillaries with piezometers therein, a pump, flow control valves, flow, density, and speed meters, and a controller. The rheometer has application in providing for online measurements of parameters including viscosity and yield stress in mining suspensions based upon laminar transportation of the suspensions by the capillaries.

A self-sealing advanced water pressure and water flow detection device for a tunnel comprises an openable plugging device, a telescopic water guiding device and a water pressure and water flow measuring device which are connected sequentially. Before detection, a horizontal advanced drilling machine is used for drilling a hole to the position required to be detected, and a soft stratum adopts casing pipes for wall protection. The device extends into the detection hole, a front-end casing pipe abuts against the hole bottom, a central casing pipe is pushed inwards continuously, and the front-end casing pipe and a first-section casing pipe move relative to each other, so that a steel bracket drives a rubber piece to be stretched, and a closed space is formed. A buckle on the first-section casing pipe is buckled in a groove of the front-end casing pipe, and a sealing device is in the working state. After pipe sections are full of water, a valve at the back end is closed, and water pressure is measured by the aid of a water pressure gauge; the valve is opened, and the water flow is measured by the aid of a water flow machine; and pore water pressure of a front-end stratum is measured by the aid of a most-front-end pore water pressure sensor. After measurement is completed, the central casing pipe is pushed inwards continuously until the buckle is released from the groove, the steel bracket can be loosened after the central casing pipe is rotated, and the whole device is released.

The invention discloses a reservoir dam body seepage safety online automatic monitoring system. A water level measurement apparatus comprises a water level wheel, a measurement cable, a float, a hoisting wheel, a gear set, a worm, a gear wheel, a print wheel set and a constant torque motor, wherein the circumferential surface of each print wheel of the print wheel set refers to two-dimensional code identifications corresponding to values from 0 to 9, which are respectively arranged on ten arc segments from 0 to 9. The water level monitoring apparatus drives print wheels through the water level wheel and replaces digits on the print wheels with two-dimensional codes such that the water level data visual recognition rate is greatly improved; and the water level and the temperature of each piezometer tube of a reservoir dam body, the water level and the temperature of a measurement point are uploaded to a host computer through GPRS, the host computer, according to the obtained water level of each piezometer tube of each segment of the dam body, quantitatively analyzes influence factors of the water levels of the piezometers, then through combination with external temperature and climate conditions, a safety warning about a dam is given, and thus a dam accident is effectively prevented.

The invention provides a high-pressure sealing circulatory imitating wax deposition device for wax deposition imitation in long petroleum pipeline. It comprises a sealing kettle (26) which has an oil inlet (15) and an oil outlet (27), an electric stirrer (23) inserted in kettle (26), a temperature-control and a detector. The temperature-control has an inner heater which is fixed on the stirrer (23) and inserted in the kettle (26), a clamping sheath (4) which covers the inner container (6), a heat-insulating layer (3) and an outer cover (2). The detector comprises a piezometer (10) which is inserted in the kettle (26) through the kettle cover (7), a plurality of temperature sensor (21-2) in the kettle (26), a temperature sensor slideway (14), a plurality of temperature sensor drive pipe (20) which is through the outer cover (2), heat-insulating layer (3), clamping sheath (4) and close to the outer wall of inner container (6). Said simulator has small structure, volume, little apparatuses, large experiment space of oil sample, while the equivalent sheared intensity of oil sample equals the intensity of on-site oil of channel in the simulating experiment that the geometrical and dynamical condition is close to the on-site reality. The experiment has real simulating course, accurate data, and lower cost.

A bidirectional variable cross-section water-pressure bearer cycle test system for a coal mine water inrush model test, comprising a water-pressure loading portion and a water-pressure bearer portion, wherein the water-pressure loading portion has a water supply tank, a loading water pump, a water piezometer, a water control valve, a water inlet pipe, a water discharge pipe, etc., through the loaded water pressure to control the cyclic loading of the water pressure. The water-pressure bearer portion has a variable cross-section water-pressure bearer assembly and a airtight main frame variable water-level water-pressure bearer assembly. The variable cross-section water-pressure bearer assembly has a cross-section water storage tank, a cross-section water baffle and a cross-section porous plate, and the water-pressure bearer assembly has a water-level water storage tank, a water-level water baffle and a water-level porous plate, which through loading or unloading the size of water control the bidirectional variable cross-section water-pressure bearer cycle.

The invention relates to a transparent soil test device use for simulating seepage of foundation pit dewatering confined aquifer underground water.The transparent soil test device use for simulating seepage of foundation pit dewatering confined aquifer underground water comprises a model casing, a cover plate arranged in the model casing, a plank simulating a concrete diaphragm wall, water tank elements connected on both sides of the model casing to control confined groundwater level, and a piezometer tube system used for measuring the water pressure of strata of different depths and arranged on the backface of the model casing.Compared with the existing technology, the seepage paths of water flows around a waterproof curtain can be directly observed, and seepage path rules, seepage velocity and other relevant parameters can be accurately analyzed through photos shot by a high-speed camera; and seepage laws of distances between different concrete diaphragm walls and the plane and the section of a filter tube can be obtained by changing the insertion ratio of the concrete diaphragm walls and the length of a pumping filtering pipe.

The invention discloses a multimedium permeability experimental device, which comprises a specimen tube, a gravel sample layer, a concrete sample layer with fractures, and a broken stone sample layer, wherein the gravel sample layer, the concrete sample layer and the broken stone sample layer are arranged in the specimen tube from top to bottom in sequence; the bottom of the broken stone sample layer is provided with a filter plate; a sand water containing plastic bucket is arranged below the filter plate; the top of the gravel sample layer is provided with a sealing element; the bottom, the middle part and the top of the gravel sample layer are respectively connected with a N0.1 piezometer tube, a No.2 piezometer tube and a No.3 piezometer tube; the other ends of the N0.1 piezometer tube, the No.2 piezometer tube and the No.3 piezometer tube are all clung and connected with coordinate paper; the top of the gravel sample layer is connected with a water tank through a conduit; a thin iron wire penetrates through the fracture area of the concreate sample layer with the fractures; the bottom end surface and the top end surface of the fracture area are provided with thin plastic skins; the top end of the thin iron wire is connected with the bottom end of the thin plastic skin to penetrate through the center of the filter plate to be twisted into one strand of iron wire.

The invention discloses a test device of performance test of a stepped diffuser of a headbox, comprising a water storage tank, a centrifugal pump, an electromagnetic flowmeter, a steady flow box, a transparent stepped diffuser, a transparent water tank, a PIV test system and the like. The water storage tank is successively connected with a first ball valve, a first flexible single ball rubber elbow, the centrifugal pump, an adapter flange, the electromagnetic flowmeter, a second ball valve, a reducer union, the steady flow box, a first piezometer, the transparent stepped diffuser, a second piezometer and a second flexible single ball rubber elbow; the transparent stepped diffuser, the second piezometer, the second flexible single ball rubber elbow are arranged in the transparent water tank; the second flexible single ball rubber elbow is connected with the water storage tank; and the PIV test system is arranged on a corresponding part of the transparent stepped diffuser. Judgment and forecast are performed on rag rectifying performance of the stepped diffuser when flow velocity distribution and cavitation conditions at stepped parts of an axial cross section thereof are obtained.

The invention relates to a pipe piece elastic sealing gasket water tightness testing method considering soil body influences.An adopted device comprises an air pump system, a main testing system, a pressurizing water tank system and a data collection system.The main testing system comprises a main testing box with the open bottom.A sealing top cover is arranged at the upper portion of the main testing box.A detachable pressurizing air bag is connected to the top cover, and a precision pressure adjusting valve and a digital display pressure gauge are fixedly arranged on the top cover.A micro hole piezometer is arranged at the lower portion of the main testing box.The bottom of the main testing box is connected with two L-shaped adjustable base plates in a sealed mode through an elastic sealing gasket at the lower portion of the main testing box and elastic sealing gaskets of the L-shaped base plates.The two L-shaped adjustable base plates are connected through a lead screw.Grooves are formed in the two L-shaped adjustable base plates and are used for fixing the elastic sealing gaskets of the L-shaped base plates.The testing method comprises the steps that the lead screw is adjusted, a slit width corresponds to the shield tunnel pipe piece opening amount, and water leakage pressures corresponding to the pipe piece opening amount is measured.The testing method can estimate the shield tunnel pipe piece elastic sealing gasket water tightness phenomenon.

The invention provides a high-speed railway ballastless track subgrade rising soil test system, which comprises a track-subgrade structure model, a high-speed train load model loading device, a rainwater drip immersion device and a measurement and observation device, wherein the track-subgrade structure model is a two-way prestress reinforced concrete structure; the high-speed train load model loading device comprises a plurality of actuators; the rainwater drip immersion device comprises a water storage box and at least one kind of component of a support layer side surface water dripping component and a drill hole water immersion component on a track plate; the measurement and observation device comprises a comprehensive test instrument, a soil body moisture sensor, a tensioning meter, a soil body moisture data collector, a hole water pressure meter, an ultrasonic wave flow rate meter, a dynamic penetrometer and the like. The device structure is simplified; the operation is convenient. The invention also discloses a rising soil test method using the device. The method has the advantages that the steps are simplified; the whole rising soil process can be well simulated; the experiment basis is provided for the rising soil prevention and control.

An apparatus for measuring soil permeability coefficient comprises one open tubular column; the open tubular column comprises a top half and a bottom half, which are connected by a flange; the bottom of the open tubular column is provided with be provided with a bedding layer; the upper portion of the bedding layer is provided with a soil filling layer; the top half of the open tubular column is provided with at least one drain pipe; the drain pipe is provided with a valve, and connected with a water tank; the top half of the open tubular column is provided inside with a water inlet pipe connected with the water tank; the water inlet pipe is provided with a diaphragm water pump; the open tubular column sidewall at the terminal of the soil filling layer is provided with a first piezometer tube; the open tubular column sidewall at the top of the soil filling layer is provided with a second piezometer tube; and the open tubular column sidewall of the bedding layer is provided with a water outlet pipe. The apparatus provided by the invention can measure soil permeability coefficient under constant water head difference, or variable water head difference, has advantages of simple structure, convenience for operation, wide scope of usage and good accuracy.

The invention relates to a measuring device for fuel gas voltage regulator, comprising: an entrance seal flange and an exit seal flange set oppositely, an entrance piezometer tube connected to the entrance seal flange, an exit piezometer tube connected to the exit seal flange, a transmission pressing mechanism in transmission connection with the entrance piezometer tube or the exit piezometer tube, an barometre set on the entrance piezometer tube and an entrance gas in and out control ball valve, and an exit barometre set on the exit piezometer tube; injecting compacted air into the entrance piezometer tube through the entrance gas in and out control ball valve, setting test pressure valve, closing a valve port of the fuel gas voltage regulator to be measured; it is qualified if the pressure valve of the exit barometre is no more than the permissible value; injecting compacted air into the entrance piezometer tube of the fuel gas voltage regulator to be measured through the entrance gas in and out control ball valve, setting different test pressure values, regulating a setting nut of the o more than the permissible value; injecting compacted air into the entrance piezometer tube of the so as to detect whether the exit pressure thereof is stable.

The invention provides a high-voltage coaxial cable connector, which is formed by a coaxial annular assembly connected by a shielding body and a coaxial cable outer-layer conductor, wherein the shielding body is connected with the coaxial annular assembly through a thread; a buffering part is arranged between the shielding body and a coaxial cable so as to guarantee that the cable is mounted at the right center of a cable connector, and the phenomena that the distribution of an electric field is not uniform and a partial electric field is too strong can not occur; the discharge of a point end can be effectively eliminated, so that the stress is uniformly distributed and the cable is mounted at the right center of the cable connector, so as to achieve the effect of a piezometer ring; and the electric field of the connecting part is uniformly distributed to a peripheral grounding region, the occurring of corona discharge is avoided, and no damage is caused to the cable or a machine.

The invention relates to a pressure-adjustable combined-type outer fixing support for clinical orthopedic application. Combining forms of the pressure-adjustable combined-type outer fixing support include a single arm type, a semi-ring type and a ring type, fixing clamping blocks include knitting needle clamping blocks and knitting rod clamping blocks, a pressure-adjustable fixing arm is composed of an adjusting shaft, an adjusting nut, a sliding fit thread sleeve, an elastic device, a fastening nut and a fixing rod, the adjusting shaft is radially provided with a retaining spring pin, a fixing ferrule, a graduated sleeve and a sliding sleeve, the sliding fit thread sleeve is radially provided with a limiting pin, a limiting jack screw and a fastening jack screw, and the elastic device is composed of a spring, a pressure sensor, a connecting pipe and a pressure displayer and can be provided with a piezometer or not. The pressure-adjustable combined-type outer fixing support can transmit stress to enable stress to be generated at a fracture end, stress shielding can be avoided, and delayed fracture healing and fracture disunion are prevented.

The invention provides a multi-hole probe automatic calibration system and method. The system comprises a multi-hole probe; multiple piezometer tubes of which one end of each is connected with each pressure measuring hole of the multi-hole probe; multiple pressure sensors of which each is connected with the other end of each piezometer tube; an angle transformation device which is used for transforming the attack angle and the sideslip angle of the multi-hole probe; a controller; and an upper computer. The invention also discloses the multi-hole probe automatic calibration method comprising the step that parameters are set on the upper computer; the zero position of the attack angle and the sideslip angle of the multi-hole probe is determined; the attack angle of the multi-hole probe is transformed to multiple preset attack angle values one by one, and the sideslip angle of the multi-hole probe is transformed to multiple preset sideslip angle values one by one so that the pressure value acquired by each pressure sensor under each preset attack angle value and each preset sideslip angle value of all the preset wind speed values within the wind speed interval is acquired; and the calibration fitting formula is calculated through the upper computer. Full-automatic calibration can be realized and the calibration accuracy can be enhanced.

The invention discloses an optical fiber grating water and soil interface sensor and a manufacturing and installation method thereof; and the optical fiber grating water and soil interface sensor comprises a fixed frame and a piezometer tube. The fixed frame plays the roles of protecting and fixing the piezometer tube; the piezometer tube comprises a tube body and a series of optical fiber grating sensing probes which are lined at intervals by the depth; the probes are of double-side structures, wherein the front sides of the probes bear water and soil pressure outside the tube and the back sides of the probes bear water pressure in the tube; the soil pressure on the outer side of the tube can be precisely measured by measuring the pressure difference between the front sides and the back sides; then the lateral oil pressure at different depths is subjected to fitting calculation; and finally the depth position of a water and soil interface is worked out. The optical fiber grating water and soil interface sensor is not interfered by water turbulence or soil transportation, the testing precision is high, and the scope of the measuring precision and measuring depths can be changed according to the use conditions and requirements; and according to the manufacturing and installation method, the optical fiber grating water and soil sensors can be implanted in a plurality of monitoring points, so that the monitoring to the erosion and sedimentation of an area is realized.

The invention relates to an electronic-clogging experiment device of a geotextile. The device consists of three parts, namely, a penetration test main body device consisting of an experiment table, a permeameter, a piezometer tube and a water head scale, a constant water head supply device consisting of a bracket, an auxiliary water inlet container, a valve, a water supply tube, a constant water head inlet container, a water outlet tube, a constant water head outlet container and an overflowing tube, and a voltage loading device consisting of a direct current power supply, an insulating lead, a metal bolt and a drilling circular metal electrode. By using the penetration test main body device and the penetration test main body device, continuous hydraulic power penetration tests with different hydraulic power gradients can be performed to the geotextile, and continuous electric penetration tests with different hydraulic power gradients can be performed to the geotextile by applying a uniform direct current electric field inside the permeameter through the voltage loading device, so that the influence on the clogging of the geotextile caused by electronic effect can be studied.

An air pump that measures an air pressure including a base, a one-way valve, a pump pipe, a piezometer, a scale plate, a cylinder, a piston, and a driving stem. The base has a chamber room. The one-way valve has an inlet chamber and a vent. The scale plate has an air-guiding hole so that a cylinder hole of the cylinder is communicated with the air-guiding hole. A piston is driven to pump gas in the cylinder hole, thereby forcing the gas to enter the inlet chamber, rendering the vent to deliver the gas unidirectionally, and allowing the scale plate to display an air pressure value.