22 results about "Piezometer" patented technology

This invention relates to the field of reservoir dam safety monitoring technology, specifically to a seepage monitoring system and method for reservoir safety monitoring, comprising: a distributed seepage pressure monitoring array, in which multiple high-precision vibrating wire piezometers are arranged on each monitoring cross section of the reservoir dam body to form a three-dimensional monitoring grid, wherein the piezometers are protected by a novel nanofiber filter layer. This invention solves the problems of traditional single-point piezometers being unable to reflect the overall seepage field and being prone to siltation by using the three-dimensional monitoring grid of the distributed seepage pressure monitoring array and the novel nanofiber filter layer. Combined with the double-weir structure of the intelligent water measuring weir group and the ultrasonic silt detection module, it avoids the accuracy deviation caused by siltation in traditional water measuring weirs. Edge computing nodes establish a three-dimensional correlation model of seepage pressure and flow rate with time using an embedded multi-parameter coupling analysis algorithm, which can automatically identify abnormal seepage patterns, solving the problem that traditional monitoring data is isolated and cannot automatically identify potential dam hazards.

The application discloses a dam foundation pressure measuring pipe construction method, and belongs to the technical field of dam foundation seepage monitoring. The steps include the following: firstly, construction parameters are determined through survey and design, and the hole is cleaned after drilling construction; a pressure measuring pipe containing a double-layer filter layer is processed and assembled, the first filter material is backfilled to serve as support before the pipe is lowered into the hole, and the second filter material is backfilled in layers to form a filter layer in the gap outside the pipe; a special filler is used to backfill bentonite balls in grains to form a first flexible sealing layer, cement bentonite slurry is poured on the upper side to form a second rigid anti-seepage layer, and a double anti-seepage system is constructed; after passing the sensitivity test, the concrete base is poured, and the protection box is installed. The method solves the problems of easy failure of traditional process sealing and uneven backfilling, improves the construction quality and the reliability of monitoring data, and is suitable for complex dam foundation geological conditions.

The utility model relates to the field of magnetostrictive piezometric tubes, and particularly discloses a magnetostrictive piezometric tube water level measuring device which comprises a measuring device, the measuring device comprises a liquid level meter and a waveguide wire, a positioning mechanism is arranged below the liquid level meter and comprises two positioning chucks, a locking screw is installed on the side surface of the left positioning chuck, and a locking nut is installed on the side surface of the right positioning chuck. And a penetrating hole is formed in the position, corresponding to the locking screw, in the positioning chuck located on the right side, limiting sliding grooves are formed in the lower surfaces of the two positioning chucks, limiting clamping plates are installed in the limiting sliding grooves, and springs are installed at the positions, located in the limiting sliding grooves, of one sides of the limiting clamping plates. The two positioning chucks are integrally in butt joint at the tank opening position of a detection position, and the two limiting clamping plates are clamped on the outer side of a pipeline under the reset acting force of the spring, so that it can be guaranteed that a measuring device installed in the positioning mechanism is installed at the center position, and it can be guaranteed that a waveguide wire is straightened under the action of a guide cable balancing weight below the positioning mechanism.

This invention provides a float-type piezometer water level monitoring device, including a piezometer tube, a retractable scale, a float, and a scale fixing sleeve. The device is buried inside the dam. Water enters the piezometer tube through the through-hole, and the water level raises the float. Under the action of the float, the retractable scale extends and retracts to be positioned at its real-time scale length. The piezometer tube is made of galvanized steel or rigid plastic. The real-time scale length is read directly. The real-time water level inside the piezometer tube is obtained by subtracting the real-time scale length from the elevation of the piezometer tube opening. This allows for determination of whether the dam's seepage pressure is within the allowable range. This device simplifies the observation process, is easy to use, eliminates the need to bring specialized instruments to the site, and has low device and maintenance costs.

The application discloses a kind of to utilize existing power supply piezometer power supply and extraction separation potential measurement system, comprising: existing power supply piezometer, electrode system and potential acquisition control subsystem;Existing power supply piezometer is used to inject stable current field in the dam body to be measured;Electrode system includes: power supply electrode system, measurement electrode system and public electrode system;Power supply electrode system is used to connect existing power supply piezometer, forms stable current field;Measurement electrode system is used to measure the stable current field formed by any existing power supply piezometer and power supply electrode system;Public electrode system is used to connect with measurement electrode system, constitutes potential measurement loop;Potential acquisition control subsystem is internally provided with power supply and extraction separation potential collector, for emitting current and back extraction potential data body, and determine the spatial distribution of leakage hidden danger in the dam to be measured.The system can effectively reduce the influence of piezometer metal material on the propagation of electric field inside dam, so as to improve the precision of reservoir dam leakage hidden danger diagnosis in complex site.

The utility model relates to the technical field of osmotic pressure monitoring, in particular to an osmotic pressure monitoring device. The embodiment of the utility model provides an osmotic pressure monitoring device. The osmotic pressure monitoring device comprises a protection tube, a protection unit and an osmometer, the protection pipe is provided with a protection cavity and a first water inlet hole communicated with the protection cavity, the protection unit is installed in the protection cavity, the protection unit comprises a driving assembly and a protection cover which are connected, and the protection cover is provided with a plurality of second water inlet holes communicated with the protection cavity; the osmometer is installed in the protection cavity and provided with a pressure measuring hole, and the pressure measuring hole is located in the protection cover. Under the condition that water enters the first water inlet holes, the driving assembly can drive the protective cover to extend out of the protective pipe under the action of water pressure, so that the multiple second water inlet holes are exposed out of the protective pipe. According to the osmotic pressure monitoring device provided by the invention, when the osmotic pressure monitoring device is lowered from the earth surface to the deep underground water, under the isolation of the protection pipe, shallow sand and mud can be effectively prevented from entering the protection cover to influence the detection of the osmometer.

The invention provides a diving initial water level measuring device and method for a rock hole wall, the diving initial water level measuring device comprises a measuring sleeve and a water pressure gauge, the outer wall of the measuring sleeve is connected with a sealing ring group, the water pressure gauge is located above the sealing ring group, and the sealing ring group comprises a first sealing ring and a second sealing ring which sleeve the outer wall of the measuring sleeve in the axial direction; an air inlet channel and an air outlet channel which extend in the axial direction are formed in the pipe wall of the measuring sleeve, and a first air hole and a second air hole are formed in the measuring sleeve. The outer wall of the measuring sleeve is connected with the sealing ring group, so that a semi-dry and semi-wet drilling mode is realized, a clear water slag carrying function is reserved, identification difficulty caused by full-hole mixing is avoided, and the initial diving water level is distinguished while drilling under the condition of clear water drilling. By means of the air inlet channel and the air outlet channel in the pipe wall of the measuring sleeve, dynamic balance of the sealing effect of the sealing ring set is maintained, and the measuring accuracy of the water column pressure formed after diving infiltration is improved.

The invention provides a side slope state monitoring method and system for monitoring a side slope, relates to monitoring of the side slope state and / or early detection of side slope instability, and is used for taking prevention measures of side slope instability in time. The method comprises the following steps: acquiring volumetric water content from a plurality of sensors arranged on a slope; determining a safety factor of the slope using the volumetric water content based on a linear regression model obtained from the simulated volumetric water content corresponding to the humid meteorological conditions; and generating an alert in response to the safety factor being below a safety threshold, the alert indicating that a slope instability may occur. The system includes a controller arranged to perform the method and a sensor arranged on a selected slope and arranged to provide volumetric water content. The sensors can comprise osmometers arranged at the slope top and the slope toe of the selected slope and capacitive moisture sensors distributed at different elevations of the selected slope. According to the invention, a slope evaluation solution with relatively high cost effectiveness can be provided.

The invention discloses a deepwater spiral soil sampling dredging ship and a dredging method, and the dredging ship comprises a ship body, the middle part of which is provided with a vertically through central hole; a lifting device is arranged on the ship body; the desilting device comprises a sludge conveying barrel and a drainage cover which is fixedly arranged at the bottom of the sludge conveying barrel and communicated with the sludge conveying barrel, the sludge conveying barrel extends out of the center hole from bottom to top and is connected with a lifting device, and the lifting device drives the desilting device to move up and down; a first air vent is formed in the top of the sludge conveying barrel and is connected with an air supply device through a pipeline; a dredging mechanism is arranged in the drainage cover, a mud conveying mechanism is arranged in the mud conveying barrel, a mud outlet mechanism is arranged at the mud outlet end, corresponding to the mud conveying mechanism, of the mud conveying barrel, and mud dug by the dredging mechanism is conveyed upwards through the mud conveying mechanism and discharged through the mud outlet mechanism; a water pressure gauge is arranged on the outer side of the drainage cover, and a first air pressure sensor is arranged in the drainage cover. The problems that an existing desilting device is complex in aftertreatment process, large in energy consumption and large in pollution are solved.

The utility model relates to a large-scale grouting curtain inside and outside hydrological monitoring system, and belongs to the technical field of mine production equipment. The technical scheme of the utility model is as follows: a surface drilling hydrologic monitoring substation (3) is connected with a data acquisition unit (2) through a GPRS (General Packet Radio Service) network; the data acquisition unit (2) is connected with an industrial personal computer (1); the drill hole water pressure gauge (5), the water sump water level gauge (6) and the open channel flowmeter (7) are connected with the underground hydrologic monitoring substation (8) through communication cables, and the underground hydrologic monitoring substation (8) is connected with the industrial personal computer (1) through the optical fiber ring network (4). The beneficial effects of the utility model are that the effect of the grouting curtain is detected by using multi-parameter comprehensive hydrological monitoring, the mine production safety is ensured, and the underground hydrological condition is monitored in real time in the production and construction process, so that the accurate early warning of the water disaster event is realized, and the safe operation of the mine production is ensured.

This utility model provides a monitoring instrument for piping seepage and seepage lines in dams, belonging to the field of monitoring and early warning equipment. It includes an integrated probe rod, a data acquisition unit, and a power supply module. The power supply module is electrically connected to the integrated probe rod, and the integrated probe rod is electrically connected to the data acquisition unit. By integrating the probe rod body, vibrating wire piezometer, B electrode, N electrode, M electrode, and A electrode into an integrated probe rod, this utility model can simultaneously achieve "seepage location + dynamic quantification of seepage + water level measurement," providing real-time and accurate three-dimensional seepage channel coordinates, and offering more comprehensive early warning indicators for dam safety.

The invention discloses a coal mine shaft seepage water pressure testing mechanism, and relates to the technical field of coal mine shaft measurement, and the coal mine shaft seepage water pressure testing mechanism comprises a rectangular frame, a lifting mechanism and a drilling mechanism; a rectangular frame; the lifting mechanism is arranged on the side face of the rectangular frame; the drilling mechanism is arranged on the side face of the lifting mechanism; the drilling mechanism comprises a drilling cylinder arranged on the lifting mechanism, a sharp-corner pad is fixedly connected to the side end of the drilling cylinder, a vertical plate is assembled in the drilling cylinder in an inserted mode, a pair of protruding rods is fixedly connected to the side, close to the sharp-corner pad, of the vertical plate, semicircular discs are fixedly connected to the side ends of the two protruding rods, and the two semicircular discs are arranged at the side end opening of the drilling cylinder. The other side of the vertical plate is rotationally connected with a guide rod, the middle of the guide rod is fixedly connected with a limiting disc, and the limiting disc is in threaded connection with the inner wall of the drilling barrel, so that an operator can conveniently measure the coal mine shaft seepage water pressure, and the water pressure gauge is wrapped and protected by the drilling barrel and can be prevented from being collided and damaged by external objects; the multi-point seepage water pressure test on the inner wall of the coal mine shaft is facilitated.

The invention relates to the technical field of pipeline detection, in particular to a pipeline osmometer mounting device and a mounting method thereof.The mounting device comprises a supporting mechanism, a positioning piece, a reaming mechanism and a processing mechanism; an operator firstly uses the positioning piece and the supporting mechanism to mount the reaming mechanism on a pipeline, uses the processing mechanism to process the mounting surface of the mounting pipe into an arc-shaped structure, and then places the mounting pipe below the reaming mechanism to broach the pipeline of the reaming machine through the mounting pipe; the structure of the positioning piece is changed, the pipeline is processed, so that the opening edge of the pipeline abuts against the interior of the installation pipe, the equipment is removed, the interior and the exterior of the installation pipe are welded, the osmometer is installed, the equipment solves the problems of gaps between welding seams and welding difficulty, and the equipment has good practicability and economical efficiency and is suitable for popularization and application. And popularization and use of equipment are facilitated.

A multistage-in-one-hole pore water pressure observation device, comprising: a plurality of digital piezometer probe assemblies (10) arranged in a monitoring hole (1) from bottom to top, an inter-stage hydraulic isolation cylinder assembly (2) connected between each two adjacent digital piezometer probe assemblies (10), and watertight joint assemblies (30) used for connecting adjacent digital piezometer probe assemblies (10) and inter-stage hydraulic isolation cylinder assemblies (2). Each digital piezometer probe assembly (10) comprises a hollow water-permeable cylinder (11), a pore water pressure meter assembly (12) arranged in the water-permeable cylinder (11), a high-permeability material (13) filled in a gap between an inner wall of the water-permeable cylinder (11) and the pore water pressure meter assembly (12), and a water-permeable geotextile (14) wrapping the high-permeability material (13). Multi-core cables (40) are electrically connected between the adjacent pore water pressure meter assemblies (12). The device has the characteristics of integrated design, prefabrication and installation of the pore water pressure monitoring apparatuses and the backfill material, thereby simplifying an on-site installation process and reducing monitoring costs. Also provided is a mounting method for the multistage-in-one-hole pore water pressure observation device.

This invention provides a two-dimensional consolidation coefficient determination device and method based on a physical information neural network, solving the problems of current methods that cannot simultaneously detect consolidation coefficients in both vertical and horizontal two-dimensional directions, and whose detection process is cumbersome and requires improvement in accuracy. The device includes an outer frame, within which a measuring cylinder is fixed. The inner cavity of the measuring cylinder serves as a pressing station. Both the upper and lower openings of the measuring cylinder are sealed with permeable stone covers. Several pore water pressure gauges are installed on the side walls of the measuring cylinder. Hydraulic pumps are pressed against the outer sides of both the upper and lower permeable stone covers. The hydraulic pumps are electrically connected to a hydraulic control system. A control panel is mounted on the outer wall of the outer frame, and the hydraulic control system is connected to the control panel via a circuit. This invention selects two-dimensional consolidation theory as the basis for determining the consolidation coefficient, avoiding the use of empirical formulas. While ensuring calculation accuracy, it simplifies the steps for obtaining the soil consolidation coefficient to the greatest extent possible, and also has good universality.

The utility model relates to the technical field of osmometer mounting devices, and discloses a convenient-to-maintain osmometer mounting device which comprises a mounting cylinder, a connecting column fixedly connected to the surface of the mounting cylinder, a mounting opening formed in the surface of the mounting cylinder, two sliding plates vertically and slidably connected to the interior of the mounting cylinder, and two fixing rods fixedly connected between the two sliding plates. An osmometer body is arranged between the two sliding plates, a mounting mechanism for mounting the osmometer body is arranged between the two sliding plates, a sliding mechanism for sliding the two sliding plates is arranged in the mounting cylinder, a plurality of filter screens are mounted on the surface of the mounting cylinder, and a plugging mechanism for plugging the plurality of filter screens is arranged in the mounting cylinder. According to the utility model, through the arrangement of the two sliding plates, the osmometer body can slide up and down during use, so that the osmometer body is convenient to install or maintain, meanwhile, in the sliding process, the plurality of baffles are driven to rotate, so that the plurality of baffles block the surfaces of the plurality of filter screens, and the influence of gravels on the interior of the installation cylinder is further prevented.

The present application relates to a single-hole multi-stage pore water pressure observation device and an installation method thereof. The single-hole multi-stage pore water pressure observation device includes: a plurality of digital piezometer probe assemblies arranged in a monitoring borehole from bottom to top, an inter-stage seepage-isolation cylinder assembly connected between two adjacent digital piezometer probe assemblies, and a watertight connector assemblies configured to connect the adjacent digital piezometer probe assemblies to the inter-stage seepage-isolation cylinder assembly, wherein each digital piezometer probe assembly includes a hollow water-permeable cylinder, a pore water pressure gauge assembly disposed in the water-permeable cylinder, a high-permeability material filled between an inner wall of the water-permeable cylinder and the pore water pressure gauge assembly, and water-permeable geotextile wrapped around the high-permeability material; and a multi-core cable is electrically connected between adjacent pore water pressure gauge assemblies.

This invention relates to a method and system for evaluating mining safety based on karst water level monitoring of the coal seam floor. The method includes: collecting surface water level monitoring data and underground water pressure monitoring data; converting the surface water level monitoring data into surface water pressure data, correcting the underground water pressure monitoring data, and calculating the thickness of the aquitard from the coal seam floor to the roof of the carbonate-bearing aquifer; calculating the water inrush coefficient at each water level monitoring hole and each water pressure monitoring hole; drawing contour lines of the water inrush coefficient using the pan-kriging spatial data interpolation method; and delineating safe mining areas and water inrush hazard zones according to established evaluation principles. This invention takes the working face or mining area as the object, calculates the water inrush coefficient by establishing corrected water level and water pressure calculation formulas, and draws contour lines of the water inrush coefficient using the pan-kriging interpolation method, delineating the water inrush hazard zone and non-water inrush zone, which can provide a more reliable basis for evaluating the mining safety of coal seams affected by karst water hazards.

A true triaxial hydraulic coupling compression test system and method for bulk gangue is disclosed, applicable to geotechnical engineering and coal mining testing. It mainly consists of four parts: a test device frame, a hydraulic servo system, a data management system, and an internally enclosed seepage compression system. The hydraulic servo system primarily includes a loading cylinder, a constant-speed, constant-pressure metering pump, and inlet and outlet oil pipes. The data management system mainly includes a displacement sensor, data cable, button control console, computer, pressure sensor, flow meter, piezometer, and spoke-type weighing sensor. The internally enclosed seepage compression system mainly includes an electrically controlled shut-off valve, a high-pressure water pump, a water storage tank, a force transmission plate, a pressure plate, an inlet pipe, an annular spray head, sliding needle rollers, a drain pipe, and heat-shrink bags. This system can autonomously set horizontal and vertical loading stresses, simulating the actual stress conditions of bulk gangue under hydraulic coupling, playing a crucial role in safe mining in deep mines and managing ground pressure in goaf areas.

This invention discloses a long-term monitoring and pressure relief system for water pressure behind tunnel lining during operation, belonging to the field of tunnel engineering safety monitoring technology. The system includes a monitoring subsystem, a pressure relief subsystem, and a data transmission and control module. The monitoring subsystem embeds a piezometer between the primary support and secondary lining at key sections of the high-pressure, water-rich tunnel section, and works with structural stress-strain sensors to achieve long-term automated monitoring of multiple parameters. The pressure relief subsystem deploys permanent pressure relief holes penetrating from the secondary lining to behind the primary support at the bottom of the tunnel cable trench, and uses an openable / closable device to drain excess pressure. The data transmission and control module receives monitoring data, analyzes and issues early warnings, and coordinates with the pressure relief subsystem to perform proactive intervention. This invention forms an integrated "prevention-monitoring-treatment" solution, effectively avoiding lining defects caused by water pressure accumulation. It features simple structure, low operation and maintenance costs, and high safety and reliability, and is suitable for waterproofing and pressure protection throughout the entire life cycle of tunnels during operation.

The present application relates to a single-hole multi-stage pore water pressure observation device and an installation method thereof. The single-hole multi-stage pore water pressure observation device includes: a plurality of digital piezometer probe assemblies arranged in a monitoring borehole from bottom to top, an inter-stage seepage-isolation cylinder assembly connected between two adjacent digital piezometer probe assemblies, and a watertight connector assemblies configured to connect the adjacent digital piezometer probe assemblies to the inter-stage seepage-isolation cylinder assembly, wherein each digital piezometer probe assembly includes a hollow water-permeable cylinder, a pore water pressure gauge assembly disposed in the water-permeable cylinder, a high-permeability material filled between an inner wall of the water-permeable cylinder and the pore water pressure gauge assembly, and water-permeable geotextile wrapped around the high-permeability material; and a multi-core cable is electrically connected between adjacent pore water pressure gauge assemblies.

The invention discloses tailing pond deep multi-parameter monitoring equipment and a use method thereof, and the equipment comprises a seamless steel pipe inserted into a tailing pond dam, a PE hard permeable pipe arranged in the seamless steel pipe, a galvanized steel pipe arranged in the PE hard permeable pipe, a pipe head plugging device arranged at the bottom end of the PE hard permeable pipe, an optical frequency domain reflectometer and a water pressure gauge. The device is characterized in that the optical frequency domain reflectometer is installed on the outer side of the PE pipe, flower holes are formed in the pipe wall of the galvanized steel pipe, the bottom end of the galvanized steel pipe is sealed, and the water pressure gauge is arranged in the galvanized steel pipe. According to the invention, the stress, strain, temperature and infiltration line parameters of different positions of the tailing dam can be obtained more accurately. The device has the characteristics of high construction speed, high applicability, simple structure and high reliability.