21 results about "Site testing" patented technology

This invention discloses a rapid method for detecting the moisture content of fine aggregates used in concrete, belonging to the field of building materials testing technology. The method involves collecting samples of different types of fine aggregates, preparing multiple moisture content samples from oven-dry to saturated surface-dry states, and then measuring the resistivity values ​​after compaction under constant pressure to form a dataset. Based on this dataset, a specific model is established using nonlinear function fitting, and a general prediction model is established using machine learning algorithms. During on-site testing, the resistivity values ​​of the fine aggregates to be tested are measured after compaction under the same constant pressure, and the moisture content is calculated according to the type of aggregate using the appropriate model. This invention achieves rapid and non-destructive testing of the moisture content of fine aggregates, providing real-time data for adjusting water usage in concrete production.

This utility model relates to the field of water quality sampling technology, and in particular to a portable integrated on-site water quality sampling and pretreatment device. It includes a housing with a hinged lid mounted on the rear side of the top of the housing. A water quality analyzer is fixedly mounted on the front right side of the housing, and a sampling component is mounted on the rear right side of the housing. This utility model solves the problems of difficulty in quickly identifying the geographical location of water samples during testing, and the inconvenience of carrying multiple devices during sampling. During sampling, the sampling component allows for rapid sampling of the water area, and the storage component enables the classification and placement of water sample tubes, allowing for rapid identification of water samples in different areas and effectively ensuring the clarity of subsequent testing data. The water quality analyzer provides rapid testing of the collected water samples, allowing staff to perform on-site testing immediately, effectively ensuring the accuracy of the test data.

The present application provides a method and device for on-site testing of the Poisson's ratio of soil, the device comprising an aluminum angle, and an inclinometer mounted on the aluminum angle; a Poisson's ratio calibration unit for calibrating the relationship between different Poisson's ratios and the angle of inclination of the aluminum angle when different vertical loads are applied, and a collection unit for collecting data on the angle of inclination of the aluminum angle when different vertical loads are applied to the soil to be tested. The method steps are: constructing a curve showing the change of horizontal stress with soil depth in soils with different Poisson's ratios; applying different pressure combinations under different Poisson's ratios, measuring the angle of inclination of the aluminum angle measured by the inclinometer under different pressure combinations, and constructing a curve showing the relationship between Poisson's ratio and inclination angle, applying a vertical load to the center of the pressure plate placed on the soil to be tested, recording the angle of inclination of the aluminum angle, and calculating the Poisson's ratio of the soil to be tested based on the curve showing the relationship between Poisson's ratio and inclination angle. The present application does not require sampling of the soil to be tested, does not cause disturbance to the soil to be tested, and provides more accurate test results.

The present invention discloses an indoor test method for scour protection of pile foundation solidified soil, comprising: erecting a transparent model pile in a grit chamber of a water flume, laying a soil layer around the model pile; placing an ADV flow velocity sensor in front of the model pile and a video recorder inside the model pile to record flow velocity data and image data during the test; preparing solidified soil; slowly injecting water into the water flume until a corresponding water level is reached, adjusting the water flume flow generating equipment to ensure that the water flow reaches a designed flow velocity, and scouring the soil until a scour pit develops in equilibrium at the corresponding flow velocity; blowing solidified soil into the scour pit according to the range and depth of the scour pit; observing and measuring the development of scour during the solidified soil curing process until the scour pit develops in equilibrium, and recording the scour depth and scour range at each measuring point around the model pile. The present invention overcomes the drawback that on-site testing cannot fully meet the requirements of research work for environmental conditions, test conditions, and test accuracy.

The application discloses a method and system for predicting the occurrence depth of an ore body of a weathered crust type rare earth deposit, and relates to the technical field of geological exploration. The method comprises the following steps: performing on-site testing on the weathered crust by using a high-density electrical method; calculating and inverting the testing results to obtain apparent resistivity data of the weathered crust at different depths; correcting the distortion values of the apparent resistivity data with the terrain fluctuation according to the terrain of the weathered crust, obtaining the apparent resistivity data of the weathered crust at different depths after the terrain correction by using a ratio method, and further obtaining a first derivative curve of the apparent resistivity changing with the depth, and determining the occurrence depth of the rare earth ore body in combination with a logistic regression model parameter. The application uses the variation law of the apparent resistivity of the weathered crust at different depths to find out the groundwater structure of the weathered crust, further uses the logistic regression model parameter to determine the position of the ore body of the weathered crust type rare earth deposit, so as to accurately predict the occurrence depth of the rich ore layer of the weathered crust type rare earth deposit, and efficiently and accurately explore the rare earth ore body in the weathered crust.

This invention discloses a supercharging pile on-site testing device, including a chassis with multiple charging gun sockets on the top. Each charging gun socket includes a base and a protective sleeve, with the sleeve installed in the base. The protective sleeve has a first groove, and a second groove extending to the top surface of the sleeve is located at the top of the first groove. A temperature sensor assembly is located in the first groove. A partition plate is located at the bottom of the sleeve, with a heat-conducting arc-shaped portion near the first groove. A heat-conducting connection portion is located near the heat-conducting arc-shaped portion on the side of the sleeve. An air inlet pipe is connected to one end of an elastic spiral tube at the bottom. A coil is located inside the heat-conducting arc-shaped portion, with the air inlet pipe connected to one end of the coil, and an air outlet pipe connected to the other end of the coil. This invention efficiently and directly conducts heat from the partition plate at the bottom of the sleeve and the testing charging gun head to the sensor probe through the coil and the elastic spiral tube.

The utility model provides a hole site gauge, which comprises a central plate, an annular plate, a plurality of positioning pins and a limiting assembly, the central plate is an annular flat plate, an inner hole of the annular plate is rotatably connected with the periphery of the central plate, and the bottom surface of the annular plate and the bottom surface of the central plate are coplanar. A plurality of strip-shaped through holes are formed in the center plate and the annular plate in a surrounding mode, the extending direction of the strip-shaped through holes intersects with the axis of the center plate, first counter bores are formed in the downward ends of the strip-shaped through holes, and the diameter of the positioning pins is matched with the width of the strip-shaped through holes. The positioning ring matched with the first counterbore is fixedly arranged on the positioning pin; a fixing nut is arranged at the other end, far away from the positioning ring, of the positioning pin; the limiting assembly is used for enabling the center plate and the annular plate to rotate or be fixed. According to the utility model, the problem that the mounting hole cannot be adjusted and needs to be customized is solved, and the universality of the gauge is improved.

A construction method for strengthening and consolidating a soft roadbed relates to the technical field of road paving, including site testing, pre-construction preparation, drainage and consolidation, secondary reinforcement and construction inspection. The invention has strong practicality. By conducting site testing and pre-construction preparation, the actual conditions of the construction site can be mastered, and later operations can be carried out scientifically and effectively. Excess moisture in the soft soil layer under the roadbed is removed by drainage and consolidation and secondary reinforcement, and the soil layer after drainage is reinforced to improve the supporting capacity of the roadbed. Post-construction inspection is carried out to eliminate construction hazards and improve safety. A soft roadbed consolidation device is used during drainage and consolidation to efficiently drain moisture in the soil layer and improve construction quality. By arranging an extrusion device on the soft roadbed consolidation device, moisture in the soil layer can be quickly drained and the soil in the soil layer can be made more compact and stable. The drainage device can quickly drain the squeezed moisture, improve drainage efficiency, and the soft roadbed consolidation device can be reused to avoid waste and environmental pollution.

The utility model provides a model test device for testing the vertical bearing capacity of a pile foundation, which comprises a reaction frame (12) and a model box (1), and is characterized in that the model box (1) is arranged in the reaction frame (12), and a rock-soil layer (2), a model pile (3), a loading plate (6), a load sensor (7), a jack (8), a digital display dial indicator (9), a clamp (10) and a metal cushion block (11) are arranged in the model box (1). The model test device for testing the vertical bearing capacity of the pile foundation aims to solve the problem of high cost of a method for testing the vertical bearing capacity of the pile foundation on site, is reasonable in structure, convenient to operate and high in applicability, and ensures that force is vertically loaded in the testing process and no eccentric torque is generated.

The invention belongs to the technical field of filling mining, and particularly relates to an assembly type filling body preparation device. An upper module, a middle module, a lower module and a base; the simple and reliable filling body preparation device is designed, the filling body with a certain height can be manufactured in an indoor device by reducing the proportion of the filling body, and then the relation between the strength and the height of the filling body is obtained according to a mechanical test, so that the strength of each position of a field goaf is obtained. According to the method for predicting the strength of the filling body by combining the laboratory and the field test, the strength distribution of the underground field filling body can be simply, quickly and accurately predicted, so that the strength distribution of the filling body in the vertical direction is judged, and the method has guiding significance for formulating a metal mine pillar recovery scheme and guaranteeing the structural stability of a stope.

This invention discloses a dedicated measuring stand and method for high-speed maglev tracks, belonging to the field of high-speed maglev track engineering measurement technology. This invention solves the problems of existing equipment being costly and complex to operate, lacking dedicated static measuring tools suitable for rapid on-site testing and with strong environmental adaptability, thus failing to meet the real-time data requirements for daily track inspections and fine adjustments. The invention achieves rapid assembly and disassembly of the track measuring stand through a magnetic base. Its composite structure of high-strength alloy hard aluminum profile and tool steel balances high rigidity and lightweight, avoiding deformation that affects accuracy and facilitating handling. Before measurement, a standard sample is used for calibration to unify the benchmark, ensuring consistent, repeatable, and traceable results. The stand is equipped with four 0.01mm precision electronic dial gauges that simultaneously collect data, and combined with dedicated formulas, quickly calculates indicators, resulting in high measurement efficiency, sub-millimeter level measurement capabilities, and independence from environmental conditions such as line of sight and lighting, adapting to the complex testing needs of tracks.

The application provides a method for measuring damping ratio of a building by using solid sound waves, which comprises calculating an attenuation coefficient α of sound waves in the building; obtaining an undamped natural angular frequency ω n of the building according to physical parameters of the building; and calculating a damping ratio ζ by bringing the attenuation coefficient α and the undamped natural angular frequency ω n into a formula. The method has the advantages of simple testing device, easy operation, simple operation process, greatly reduced testing cost and time, and suitability for on-site testing and large-scale structure application, especially for structures difficult to test in a laboratory environment. Through reasonable data analysis method, the damping ratio of the building can be relatively accurately measured.

The invention provides a soft foundation settlement control simulation method, system, equipment and medium, and the method comprises the following steps: S1, obtaining soft foundation soil layer structure information, constructing a soft foundation soil particle model according to the soft foundation soil layer structure information, and adjusting simulation parameters of the soft foundation soil particle model; s2, obtaining reinforcing material information, determining micro parameters of a reinforcing material by using a parallel bonding contact model, and importing the micro parameters into the soft foundation soil particle model; s3, constructing a plurality of simulation filling schemes by using a control variable method, and performing numerical simulation by using the soft foundation soil particle model to generate a soft foundation soil layer filling influence rule; and S4, a plurality of filling schemes are constructed manually, the soft foundation soil particle model is used for verifying each filling scheme, and then one filling scheme is selected from the verified filling schemes as the optimal filling scheme according to requirements. The problem that in the prior art, stable reinforcement cannot be achieved at a time, on-site testing and adjusting need to be conducted many times, and consequently the engineering construction efficiency is low is solved.

An apparatus for testing plastic pipe dimensional specifications, comprising: a machine table (1), a fixed disc (1201), and a fixed pressing clamp (12). A pair of slide rails (8) are provided on two sides of the top of the machine table (1); a first slide table (6) and a second slide table (7) are respectively slidably connected between the two slide rails (8); a plurality of driving rollers (15) are rotatably connected to both inner sides of the second slide table (7), and the plurality of driving rollers (15) are transversely arranged side by side on both inner sides of the second slide table (7); an adapter gear disc (13) is fixedly mounted on one side of the fixed disc (1201); a plurality of connecting pins (1202) are fixedly connected between the fixed pressing clamp (12) and the fixed disc (1201); and a pair of cameras (1302) are slidably mounted on the side of the adapter gear disc (13) facing the second slide table (7). The present invention further relates to a method used in an apparatus for testing plastic pipe dimensional specifications. When a pipe opening is small, the moving radii of the two cameras (1302) decrease, making it easier to photograph the edge of the pipe, thereby improving the adaptability of the apparatus.

The utility model relates to a gravel screen matching weighing instrument which is installed on a gravel screen and comprises a hoop clamp for clamping a gravel screen hoop, the hoop clamp is connected with a torque sensor, and the torque sensor is arranged on the side portion of the gravel screen and the side portion of the hoop clamp and used for measuring the weight of aggregate on the gravel screen through torque. According to the aggregate grading device, test detection can be conveniently carried out on a construction site, the aggregate grading condition can be quickly obtained, and blending of different aggregates can be conveniently and timely adjusted according to the aggregate condition on the site.

This invention discloses a method and related apparatus for predicting the strength of cement-stabilized soil, relating to the field of building materials. The prediction method includes determining the normalized unconfined compressive strength index I of cement-stabilized soil based on the solidification test parameters and basic physical properties of the cement-stabilized soil sample; determining the unconfined compressive strength test value of the cement-stabilized soil; fitting I and the test value into a formula, calculating the values ​​of a and b, and substituting them into the formula to obtain the prediction model formula, which can be used to predict the unconfined compressive strength of cement-stabilized soil. Based on the physical properties of the solidified soil, the solidification test parameters, and the unconfined compressive strength test value, this application constructs a prediction model formula for the unconfined compressive strength of cement-stabilized soil with this strength index as the sole predictor variable, thereby achieving rapid prediction of the strength of cement-stabilized soil, reducing on-site testing costs, and improving construction efficiency and quality.

This application relates to the field of pipe pile technology, and particularly to a method and equipment for determining the vertical compressive bearing capacity of concrete pipe piles. The method includes: acquiring the actual vertical compressive bearing capacity parameters of a first pipe pile and the foundation physical parameters of a second pipe pile; determining the bearing capacity influence coefficient of the second pipe pile, effectively mapping the depth range variation characteristics of the measured data of the first pipe pile to the second pipe pile; extracting core feature points from the foundation physical parameters of the second pipe pile, combining the depth progression relationship and the bearing capacity influence coefficient; constructing the mechanical performance information of the second pipe pile based on the core feature points and the bearing capacity influence coefficient of the second pipe pile; and obtaining the final vertical compressive bearing capacity value by hierarchically integrating and optimizing the mechanical performance information. This significantly reduces the cost and time investment of on-site testing while maintaining prediction accuracy, and improves decision-making efficiency in engineering design and construction processes.

The present invention discloses a rock-breaking and tunneling detection device based on water jet cutting, which relates to the technical field of on-site rock hardness detection. The device comprises a limiting unit, including a vertical fixing assembly, a guide assembly, and a horizontal fixing assembly; and a drill bit tunneling unit, including a mounting box, a first cylinder, and a drill bit assembly. The beneficial effects of the present invention are as follows: through the efficient coordinated operation of the water jet cutting unit and the drill bit tunneling unit, the water jet is used to pre-cut the rock surface to form grooves to disrupt the stress distribution. The water pressure and drill bit parameters are dynamically adjusted by combining a feedback mechanism based on the cutting depth and the drilling effect. This allows rock hardness data to be obtained without replacing the drill bit on-site, allowing the appropriate drill bit type to be selected. This reduces the problem of reduced detection efficiency caused by frequent drill bit replacement during on-site testing.

The invention provides an on-site testing device and method for the heat dissipating capacity of large-scale equipment, and relates to the technical field of heat measurement, and the on-site testing method for the heat dissipating capacity of the large-scale equipment comprises the following steps: carrying out general scanning rough measurement on tested equipment by using an infrared thermal imager; dividing measured areas according to the distribution state of the surface temperature of the heat insulation layer, and determining the position of a heat flux density measuring point in each measured area; after the surface of the measured equipment enters a metastable state, recording the measurement result and the measurement time of each heat flux density meter; measuring the temperature distribution of each heat dissipation surface of the measured equipment by using an infrared thermal imager, and recording the infrared measurement time; a temperature sensor is used for measuring the ambient temperature of different heat dissipation surfaces of the tested equipment; and calculating the heat dissipating capacity of each measured area, and summing the heat dissipating capacity of each measured area to obtain the total heat dissipating capacity of the large-scale equipment. According to the method, the equipment surface convective heat transfer coefficient corresponding to each measuring point can be accurately obtained, so that the calculation is more accurate, and the method is suitable for field heat dissipating capacity testing of large-scale equipment.

The utility model discloses a base hole site testing fixture, which relates to the technical field of testing fixtures and comprises a bottom plate, a positioning pin is mounted in the middle of the top end of the bottom plate, a base body is sleeved outside the positioning pin, a plurality of positioning holes are arranged in the top end of the bottom plate in front of the positioning pin, and gauge blocks are arranged in the positioning holes. The device further comprises a sleeve capable of being arranged outside the gauge block in a sleeving mode, threaded connection holes are formed in the two sides of the top end of the bottom plate, the sleeve is arranged above the gauge block, a plurality of liquid injection holes are formed in the top end of the sleeve, and rubber plugs matched with the liquid injection holes are arranged above the liquid injection holes. The connecting plate and the bottom plate are sealed through the rubber sealing plate, then the rubber plug is inserted into the liquid injection hole, sealing of the upper portion is completed, the gauge block is sealed through the sleeve, the gauge block is sealed more conveniently, and under the action of anti-rust oil, air and moisture are effectively isolated, and the gauge block is prevented from being rusted.