105 results about "Suction stress" patented technology

The invention provides an intelligent debris flow early warning method and system based on a physical model and an algorithm, and belongs to the technical field of geological disaster monitoring, and the method comprises the steps: S1, carrying out an indoor soil physical mechanics test, building a physical model, and carrying out the parameter calibration of the physical model through combining a stability criterion equation of a rainfall infiltration-matrix suction coupling effect; s2, simulating different conditions, and generating and outputting debris flow occurrence process data under different working conditions by the physical model; s3, taking the generation process data and the real-time monitoring data as input, constructing a two-channel input network, and training a correction model to obtain corrected response data; s4, on the basis of an SHAP interpretability framework, constructing a Bayesian probability early warning model driven by multi-source heterogeneous data; and S5, triggering real-time early warning of the early warning platform according to the debris flow real-time occurrence probability of the monitoring point, and constructing a mapping relation between soil deformation and critical parameters through dynamic simulation of a physical model on a soil mechanical behavior.

The invention discloses a method for rapidly predicting and dynamically regulating and controlling the quality of a flow field of a gas compressor under a low Reynolds number. According to the method, firstly, pressure gradient parameters Ks of a blade suction surface laminar flow separation point under different Reynolds numbers are obtained through high-precision performance testing / numerical calculation, and then experience prediction models of the Ks, an incoming flow Reynolds number Re, a separation point momentum thickness Reynolds number Re theta s, a blade surface separation scale and boundary layer development characteristics are sequentially established; and the influence of the low Reynolds number effect on the separation bubble structure and the boundary layer growth rate is quantified, so that the performance degradation degree of the gas compressor under the low Reynolds number can be quickly predicted. Based on the model, parameters such as excitation frequency of the front edge deformation surface of the blade are optimally configured, periodic pressure disturbance waves are induced to be generated, and dynamic regulation and control of large-scale separation flow under the low Reynolds number are achieved. The prediction speed of the performance variation of the gas compressor under the low Reynolds number is increased, and support is provided for aerodynamic design and performance regulation and control of the high-altitude gas compressor.

A marine foundation such as a jacket or a tripod foundation for a wind turbine comprises suction piles that are subjected, in service, to cyclical loading of compression phases and tension phases in alternation. Each pile has a one-way valve that opens and closes autonomously in response to pressure differentials between the internal chamber and the surrounding water. The valve opens during the compression phases to effect fluid communication between an internal chamber of the pile and surrounding water. Water is thereby ejected from within the chamber through the valve. Conversely, during the tension phases, the valve closes and water is admitted into the pile only through soil within a skirt of the pile. Thus, a unidirectional, generally upward flow of water is driven through the soil within the skirt during the compression and tension phases, maximising water flow friction and reducing the risk of liquefaction of the soil.

The application relates to a suction cylinder sinking resistance calculation method and relates to the technical field of suction cylinder foundation construction, which comprises the following steps: calculating the clay content index of a clay-sand mixed soil layer by using a pore pressure static sounding test structure; calculating the upper limit value of the side resistance coefficient of the suction cylinder, the lower limit value of the side resistance coefficient of the suction cylinder, the upper limit value of the end resistance coefficient of the suction cylinder and the lower limit value of the end resistance coefficient of the suction cylinder according to the clay content index; and calculating the first sinking resistance based on the above resistance coefficients and by using a formula. The application establishes a suction cylinder sinking resistance calculation method for the clay-sand mixed soil layer, clearly defines the quantitative relationship between the clay content index of the clay-sand mixed soil layer and the sinking resistance coefficient (including the end resistance coefficient and the side resistance coefficient), solves the problem that the calculation parameters of the suction cylinder sinking resistance in the clay-sand mixed soil layer are not clear in the existing norms, and improves the accuracy of the sinking resistance calculation result.

A subsea foundation exemplified by a monopile or a suction pile comprises an embeddable body that extends along an upright embedment axis. A plurality of fins extend outwardly from the body in directions transverse to the embedment axis. At least some fins of the plurality are at least partially embedded in seabed soil. The plurality of fins is divided into an upper array of upper fins and a lower array of lower fins. The arrays may be spaced apart or overlap along the embedment axis, and may be angularly aligned or angularly offset with respect to each other about that axis.

The invention discloses a slope stability prediction method in heavy rainfall weather, and relates to the technical field of road slopes. The method comprises the following steps: collecting soil characteristic data before and after rainfall in a road slope sub-region, and fitting a water-soil characteristic function and a saturated permeation function through a least square method; the method comprises the following steps: establishing a road slope three-dimensional model by using a laser radar, obtaining soil parameters of each point of the road slope three-dimensional model based on an inverse distance square weighting method, and obtaining simulated initial soil matrix suction and simulated initial unsaturated permeability coefficients; simulating moisture movement through an unsaturated seepage control equation to obtain simulated soil moisture saturation and simulated pore water pressure of each point, screening risk points through a preset threshold value, and generating risk clusters through density clustering; and searching a potential sliding surface in the risk cluster by adopting a particle swarm optimization algorithm, calculating the safety coefficient of the sliding surface in combination with a soil strip method, and quantifying the area of the sliding surface. And fusing the safety coefficient and the area proportion to calculate a slope risk index and divide stability grades.

The invention discloses an intelligent stability control method, system and device for a red soil slope, and relates to the technical field of monitoring control, and the method comprises the steps: S1, constructing a multi-scale hydraulic-mechanical coupling model and a special parameter library for red soil; s2, monitoring and collecting data information in real time; s3, the seepage-deformation coupling behavior of the slope and the shearing strength of unsaturated soil are analyzed; s4, dynamically predicting an air inlet value parameter alpha (t) and slope suction evolution, and updating a safety coefficient; s5, predicting seepage and deformation response of the side slope; s6, correcting the parameters of the special parameter library for the red layer soil, and returning to S2; s7, triggering a dynamic control module according to the safety coefficient; s8, adjusting the control measures according to the safety coefficient; s9, an executing mechanism corresponding to the dynamic control module works according to the adjusted control measures, and the step S2 is executed again; according to the method, the slope stability evaluation precision and the control efficiency are remarkably improved, and an efficient, intelligent and sustainable solution is provided for red soil slope disaster prevention and control.

The invention relates to a test device and method capable of testing mechanical properties of hydrophilic and hydrophobic unsaturated soil, the test device comprises a pressure chamber, the pressure chamber is located at the center position of the whole device, an axial loading system is located below the pressure chamber, and the axial loading system is connected with the pressure chamber through a loading frame; the axial loading system is connected with the information acquisition system; the pneumatic control system is positioned on the side of the pressure chamber and connected with the pressure chamber through a pipeline; the data acquisition system is positioned beside the console or the computer and is connected with the sensor at each unit; the data processing system is connected with the air pressure control system and the back pressure control system, and the data processing system is connected with the axial loading system; the sample is positioned in the center of the pressure chamber; the hydrophobic soil suction control unit and the hydrophilic suction control unit are located at the upper end and the lower end of the sample, make close contact with the sample, ensure uniform pressure transmission and are connected with the air pressure control system through pipelines. According to the invention, the accuracy and wide applicability of the mechanical property test of the unsaturated soil are improved.

The invention provides a self-cleaning method of cleaning equipment and the cleaning equipment. The cleaning equipment comprises a dirt suction assembly and a control device, the dirt suction assembly comprises a sewage tank used for recycling dirt, a dirt suction pipeline communicated with the sewage tank and a suction device acting on the dirt suction pipeline, and the control device can control the suction device to generate negative pressure suction force in the dirt suction pipeline so as to suck the dirt into the sewage tank through the dirt suction pipeline. The self-cleaning method comprises the steps that in response to starting operation of a self-cleaning mode, the self-cleaning mode is executed; and under the condition that the self-cleaning mode indicates that the sewage suction pipeline is self-cleaned, the suction device is controlled to be started and alternately operates at first power and second power smaller than the first power, and cleaning liquid used for cleaning the sewage suction pipeline forms surge in the sewage suction pipeline. According to the self-cleaning method of the cleaning equipment, the dirt suction pipeline of the cleaning equipment can be self-cleaned, the service life of the cleaning equipment is prolonged, and the user satisfaction degree is improved.

The present application relates to a kind of suction bucket foundation multidirectional coupling bearing capacity evaluation method considering associated plastic flow of marine clay.The method is based on the associated flow characteristics of undrained clay plastic material,firstly, the numerical model of static loading of suction bucket foundation in undrained clay is established;Secondly, by displacement probe method, the bearing capacity of foundation under different proportional displacement loading is obtained;Finally, based on the rule of associated plastic flow, the same as the outer normal of bearing capacity envelope surface and displacement increment direction vector is used as the criterion, the bearing capacity envelope surface of suction bucket foundation (i.e. the maximum bearing capacity of foundation under multidirectional coupling load) is determined.Compared with prior art, the present application has the effect of considering the associated plastic flow of undrained clay plastic material, the method has clear physical meaning and is easy to implement, and can solve the problem that the existing model cannot accurately evaluate the bearing capacity envelope surface.

The invention relates to the technical field of ocean energy development, in particular to an underwater suction pile foundation rock-soil spring stiffness analysis method considering the heterogeneous characteristic of sea soil. The method comprises the following steps: S1, establishing a shear modulus depth change model based on a sea soil heterogeneous characteristic, and introducing a rigidity dimensionless parameter to perform regularization processing in consideration of a wall thickness factor of a suction pile apron board; s2, based on a Doherty method, estimating a stiffness dimensionless coefficient group in each direction of the spring through linear interpolation; s3, calculating the dimensionless rigidity values of the springs in all directions based on the rigidity dimensionless coefficient groups in all directions obtained in the S2; and S4, based on the calculation result of S3, converting the dimensionless stiffness value into the actual spring stiffness with dimensions through a dimensionalization formula. By establishing the model of which the shear modulus changes along with the depth, the actual heterogeneity of sea and soil can be reflected more accurately, so that the accuracy of predicting the bearing behavior of the suction pile foundation is improved.

This utility model discloses a device for measuring changes in matrix suction gradient, including a soil tensiometer body; a clay head is fixedly installed at the bottom of the soil tensiometer body, an electronic tensiometer is fixedly installed at the end of the soil tensiometer body away from the clay head, and a water inlet pipe is fixedly installed on one side of the soil tensiometer body, communicating with the soil tensiometer body, with a threaded cap threaded onto the water inlet pipe; this utility model, by fitting two semi-circular chucks onto the soil tensiometer body and fixing the two semi-circular chucks with pins, places the end of the support rod away from the semi-circular chucks on the ground, and inserts the rod into the support rod insertion hole to limit and fix the fixing plate, the cooperation of the support rod and the semi-circular chucks can provide support for the soil tensiometer body, preventing it from tilting due to collisions with external objects, making the device safer when continuously monitoring outdoors, and allowing the clay head at the bottom of the soil tensiometer body to maintain stable contact with the soil.

The present invention provides a calculation method for the soil-water characteristic curve of unsaturated soil, which includes: 1) collecting dewetting test data points and fitting them to obtain a continuous "initial dewetting curve"; 2) dividing the "initial dewetting curve" into N intervals equally within the soil suction range, and calculating the water content of each interval taking into account the hysteresis effect; 3) collecting test data points on the "main infiltration curve", fitting them with the calculated value in step 2, and determining the correction parameter k; 4) calculating the "infiltration scanning curve" or "dewetting scanning curve" under any initial state. The calculation results of this method are highly accurate and can effectively meet the engineering precision requirements. Compared with the use of experimental methods to obtain data throughout the process, this calculation method only requires part of the test data to calculate the "infiltration scanning curve" or "dewetting scanning curve" starting from any initial soil suction, which is relatively low in cost.

The invention discloses a device and method for measuring a relative permeability curve of a soil body, the device comprises a cutting ring, a sleeve, a stainless steel electrode, a water delivery module, a vacuum drying system and a resistivity acquisition control module, the resistivity is monitored in real time through an electrode hole, and a sealing structure ensures that the system is stable. The method is based on an unsaturated seepage and electrical conduction theory and comprises the following steps: firstly drying a soil sample, then injecting water, collecting resistivity data, inverting a soil-water characteristic curve through a resistivity-moisture content-matric suction relation model, calculating a permeability coefficient in combination with a Darcy law, and fitting to obtain a permeability curve. The device and the method overcome the limitation that a traditional experiment is tedious in operation and prone to interference, have the advantages of being portable, easy and convenient to operate, high in automation degree, suitable for field measurement and the like, and can achieve efficient and accurate measurement of the permeability characteristic of the unsaturated soil body.

This invention relates to the field of slope stability analysis technology, and in particular to a method, device, and storage medium for measuring the stability of unsaturated soil slopes. The unsaturated soil slope stability measurement method of this invention is based on the soil-water characteristic curve of unsaturated soil and uses the finite element method to solve the Richards equation to obtain the transient seepage field distribution of the unsaturated soil slope. This method is more consistent with reality than the seepage field assumed by empirical formulas in the past. While the SMP criterion proposed by Songgang-Zhongjing considers the influence of intermediate principal stress, the SMP criterion is only suitable for cohesive soil failure criteria. Therefore, this invention modifies the SMP criterion by considering the influence of cohesion, friction angle, and matrix suction, making it applicable to unsaturated cohesive soil slopes. Based on the calculation of the slope's self-weight stress, and using a modified SMP material model, we conduct stability analysis of unsaturated soil slopes using the strength reduction method, considering the influence of the intermediate principal stress of the soil, resulting in more reasonable results.

The present disclosure provides an apparatus and a system of removing sand to prevent sand encroachment. In an embodiment, the apparatus can include a main arm (101), a movable arm (102) connected to one end of the main arm (101), and a plurality of flexible robotic arms (103) connected to the movable arm (102). The plurality of flexible robotic arms (103) can include a suction end with vacuum means for suctioning out grains of sand from a location.

The invention discloses a drilling and fixing integrated drilling device and method for a deep sea natural gas hydrate exploitation system. The drilling device comprises a hollow drill rod, a plurality of continuous pipe separation units and a hollow drill bit which are fixedly connected from top to bottom in the axial direction, and according to the method, the multi-well guiding suction anchor, the rope soil taking equipment, the drilling device and the seabed drilling machine are lowered to a seabed to be positioned and leveled through a small and medium-sized workboat and are fixedly connected with the multi-well guiding suction anchor; the seabed drilling machine controls the drilling device to drill along the multi-well guide suction anchor, and the rope soil taking equipment takes soil; and the pipe is replaced until the target depth is drilled, the drilling device conducts self well cementation and well completion through the self-expansion packer and the pre-filled gravel screen pipe, and the drilling device is completed after equipment is recycled. The device has continuous and integrated operation capacity of well drilling, soil taking, well cementation and well completion, the cost is effectively reduced, the efficiency is remarkably improved, rapid construction, convenient well cementation and economic well completion of a deep sea hydrate mining system are achieved, and a new thought and method are provided for safe and efficient mining of deep sea hydrates.

The invention provides a frost heaving control method based on cold source temperature dynamic adjustment. The frost heaving control method comprises the following steps that 1, the influence of temperature evolution on driving force is analyzed; 1.1, the migration driving force of the thin film water is obtained; step 1.2, influence of temperature rise on migration driving force; step 2, analyzing freeze-thaw hysteresis of segregated ice; step 2.1, setting formation conditions of segregation ice; step 2.2, determining melting conditions of segregation ice; step 3, analyzing a water insulation mechanism of segregated ice; step 3.1, calculating a conversion relation between pressure-suction stress; step 3.2, influence of temperature rise on surface adsorption force; 4, discovering a segregation expansion control mechanism; step 4.1, influence of temperature evolution of a warm end of segregated ice on frost heaving; and step 4.2, a frost heaving control model of segregated ice is established. In order to solve the problem that frost heaving diseases are difficult to prevent and control in the stratum freezing process, frost heaving control mechanism research on frozen soil is carried out.

This invention discloses a centrifuge testing and observation system suitable for suction anchors. The system includes a test foundation and a suction anchor model housed inside a model box, a pulley support assembly on the upper part of the model box, a camera support, a laser displacement measurement assembly, a horizontal loading mechanism, and a support frame. The horizontal loading mechanism connects to the anchor point of the suction anchor model via rigging and the pulley guide frame, thereby achieving model loading. This experimental device has wide applicability, is not limited to any type of test foundation, and the height and position of various support components can be adjusted at any time according to the soil height of the model box and the required loading angle. The system is equipped with a T-bar or CPTu, a laser displacement sensor, a pore pressure gauge, and an accelerometer, enabling precise and diverse measurements of soil strength, soil settlement, pore pressure within the test foundation soil, and model movement. It can efficiently and conveniently observe the dynamic response of the suction anchor and the response of the test foundation soil.

The utility model belongs to the technical field of dam desilting, and discloses a desilting treatment device for a dam in water conservancy and hydropower engineering, which comprises a dredge pump, an additional cylinder is fixedly mounted at the output end of the dredge pump in a sleeving manner, and an insertion plate is fixedly mounted at the port of the additional cylinder. The water pump, the additional barrel, the measuring pipe and the like are arranged, during connection, the additional barrel provided with the dredge pump is obliquely connected to the digging arm of the digging machine, and when the additional barrel is close to the bottom of a reservoir, gravels above sludge can be discharged out of the digging arm through huge suction force generated by the dredge pump, so that the sludge can be discharged out of the digging arm of the digging machine, and the water pump is fixedly installed at the bottom of the side, close to the dredge pump, of the additional barrel. The sludge enters the additional cylinder firstly, then the inserting plate is inserted into the sludge and horizontally moves, the sludge enters the additional cylinder and is conveyed to the outside through the sludge suction pump, and at the moment, harmful substances on the two sides of the additional cylinder are extracted when the sludge is excavated through the water pump and the measuring pipes installed on the two sides of the additional cylinder; and the influence of diffusion of harmful substances on water resources during desilting is reduced.

The invention discloses a sheet pile built-in foundation pit stability evaluation method considering an unsaturated effect. Model test and numerical simulation results show that a foundation pit failure slip surface is in a curve and straight line combined form, and the combined form is not applied to the research on the stability of the unsaturated foundation pit at present. Based on the principle of limit analysis and upper limit, the invention provides a horizontal slice halving analytical analysis method, the method is adopted to calculate the external power made by the unsaturated soil gravity, and based on the principle of maximum energy consumption, a display semi-analytical solution of active and passive soil pressure to the moment of a supporting point in the lowermost channel is obtained. And the stability safety coefficient of the sheet pile built-in foundation pit is further obtained. The semi-analytical analysis method constructed by the invention has the advantages of an analytical method and a numerical method, effectively combines the unsaturated soil strength theory with a limit analysis method, can reasonably explain the strengthening mechanism of the suction effect, and has certain practical guiding significance for guiding foundation pit design and excavation under complex conditions.

The present invention relates to a suction-type foundation and a sinking method, comprising a barrel body, wherein the barrel body is provided with a track extending up and down; a counterweight block, wherein the counterweight block is provided in the barrel body, wherein the counterweight block is a water-permeable counterweight block, and wherein the edge of the counterweight block is provided with a pulley which is slidably connected to the guide of the track; and a water retaining block, wherein the water retaining block is fixedly provided at the bottom of the counterweight block, wherein the water retaining block has a first form for preventing water from passing through and a second form for dissolving in water after being soaked in water for a certain period of time, and a gap for water to pass through is reserved between the edge of the water retaining block and the inner wall of the barrel body, so that when the water retaining block is in the first form, the gap forms a concave opening. The suction-type foundation of the present application is conducive to reducing the sinking resistance on the inner side of the foundation, avoiding the loosening of the soil inside the foundation to form super-high soil plugs and pipe bursts, and preventing the problem of not being able to sink to the designed depth and affecting the service performance of the suction-type foundation.

The device mainly comprises a high-pressure cutting assembly and a vacuum slag suction assembly, the high-pressure cutting assembly comprises a high-pressure cutting water gun and a high-pressure pump connected with a background, the high-pressure pump outputs high-pressure jet water flow to cut a soil layer, and crushed sludge is deposited to the bottom of a groove; the vacuum slag suction assembly comprises a vacuum suction pump and a connected sludge suction pump pipe, the sludge suction pump pipe is vertically arranged at the bottom of the foundation trench, sludge which is dispersed to the bottom of the trench through hydraulic force can be immediately sucked away and conveyed to the settling tank through a pipeline for secondary treatment, and clear water separated from the settling tank can be recycled to a high-pressure pump for recycling. And the precipitated slurry is transported outwards by a closed container or is transported outwards by dry soil after further dehydration. According to the technology, the foundation trench section conforming to the set shape is excavated through cyclic operation of hydraulic cutting, trench bottom precipitation and vacuum suction removal, compared with traditional mechanical excavation, disturbance-free hydraulic cutting excavation is adopted in the technology, the excavation range can be accurately controlled, interference to the surrounding environment is extremely small, the risk of violent accidental injury to original underground infrastructures is greatly reduced, and the construction efficiency is improved. The method is particularly suitable for being implemented in a complex environment with densely-distributed pipe networks, and is an efficient and safe non-destructive excavation method.

This utility model discloses a casting sand separation device, relating to the field of sand casting technology, including a collection box; the top of the collection box is equipped with a tilt adjustment component, and a secondary box is set on one side of the collection box; a dust suction component is set on the top of the tilt adjustment component and the secondary box; this utility model, by setting a dust suction component on the top of the tilt adjustment component and the secondary box, allows dust to enter the air chamber through air holes according to the principle of air pressure difference. Under the continuous push of the negative pressure airflow, the dust entering the air chamber will converge along the internal channel of the air chamber towards the connecting pipe, which can ensure that the dust suction force is uniform in all positions within the dust cover area, effectively limit the diffusion range of dust, confine the dust inside the dust cover, improve the dust capture efficiency of the air holes, and at the same time, the equidistant design of the air holes ensures the uniform distribution of adsorption force, avoiding the accidental suction of molding sand particles due to excessive local suction force, or the dust residue due to insufficient local suction force.

The invention provides an unsaturated sandy soil-shaped two-long granite slope stability analysis method, and relates to the technical field of unsaturated soil mechanics and engineering geology, and the method comprises the following steps: correcting a BC water retention function model through a first correction parameter, and constructing to obtain an unsaturated sandy soil water retention function model; correcting the BC permeability coefficient model according to the second correction parameter, and constructing to obtain an unsaturated sand permeability coefficient model; and analyzing the stability of the two-long granite slope by combining the unsaturated sand water holding function model and the unsaturated sand permeability coefficient model to obtain a stability analysis result. According to the method, the traditional BC water holding function and permeability coefficient model is improved by using the first correction parameter and the second correction parameter, and the residual value is used for replacing a film flow parameter which is difficult to predict in the previous model, so that the suction range is expanded, and the unsaturated slope formation mechanism is analyzed.

The invention discloses a suction bucket bearing capacity test device and test method based on soil reinforcement. The suction bucket bearing capacity test device comprises a model box, a suction bucket model, a negative pressure generation assembly, a grouting reinforcement assembly, a loading assembly and a monitoring assembly. A test soil body and a soil surface fluid are arranged in the model box; the negative pressure generation assembly is suitable for forming negative pressure in the suction bucket model, so that the suction bucket model is injected into the test soil body under the negative pressure; the grouting reinforcement assembly is suitable for injecting reaction liquid into a soil body in the suction bucket model; the loading assembly is suitable for applying a load in a vertical direction or a horizontal direction to the suction bucket model; the monitoring assembly is suitable for monitoring mechanical parameter changes of the suction bucket model and the test soil body in real time in the test process. According to the invention, the complete process of building a suction bucket foundation and reinforcing a soil body in a seabed environment can be simulated, and a test device and a test method for related research are provided.

The invention discloses an unsaturated sand roadbed filler permanent deformation prediction model and an establishment method thereof. The establishment method comprises the following steps: preparing sand conforming to highway roadbed grading requirements to prepare a sand sample; the permanent deformation curve of the sandy soil sample under different matrix suction, different net confining pressures, different dynamic stress amplitudes and different compaction degrees is measured through experiments; taking a Karg model as a basic framework, introducing matric suction and compactness influence factors, and establishing a prediction model coupled with matric suction, net confining pressure, dynamic stress amplitude and compactness at the same time; and calibrating model parameters by adopting a normalized main curve method to obtain an improved permanent deformation prediction model. According to the method, the permanent deformation of the unsaturated sand roadbed filler can be accurately captured under different matrix suction forces, different net confining pressures, different dynamic stress amplitudes and different compaction degrees, unified description of cross-stress, cross-suction forces, cross-state and cross-soil types is realized, and engineers can conveniently understand and apply the method to actual design.

The utility model relates to soil and groundwater remediation technical field discloses a kind of pulsed pneumatic groundwater extraction processing device, including air compressor, PLC controller and clay sealing layer, the bottom end of the clay sealing layer is provided with quartz sand layer, the inner wall top of the quartz sand layer is fixedly connected with open well pipe, the upper and lower ends of the open well pipe are fixedly connected with real pipe, one end of the air compressor is communicated with air inlet pipe, the other end of the air inlet pipe is communicated with pneumatic extraction device, the bottom end of the pneumatic extraction device is communicated with pumping pipe, the other end of the pumping pipe is communicated with pressure water pipe.In the utility model, by air compressor to generate compressed gas to flow into air inlet pipe, make pneumatic extraction device work to produce suction, when pumping, because there is sealed wellhead in well, when water level in well drops, air pressure reduces, float drops, well is under negative pressure, to improve contaminant capture efficiency, reduce disturbance to groundwater environment.

One end of a first insulating rod is coaxially connected with one end of a second insulating rod, the diameter of the first insulating rod is larger than that of the second insulating rod, and grooves are formed in the outer surface of the first insulating rod and the outer surface of the second insulating rod in the axial direction respectively. The grooves are communicated with each other; the TDR probe is placed in the groove and is used for measuring the soil water content and matrix suction; a through hole with the diameter slightly larger than that of the second insulating rod is axially formed in the center of the gypsum cylinder, so that the gypsum cylinder wraps the second insulating rod and is in close contact with the second insulating rod; the conical tip probe is installed at the other end of the first insulating rod, and a sensor set is arranged in the conical tip probe and used for obtaining mechanical data when the conical tip probe penetrates into rock soil. According to the invention, the water content and matrix suction of the soil body can be simultaneously measured in the process of penetrating into the rock soil, so that in-situ testing is realized, the precision is high, and the testing efficiency is effectively improved.

The utility model discloses a split type suction pile anchoring foundation, which relates to the technical field of ocean engineering and comprises a suction pile structure and a buoyancy tank structure. An apron board structure and a lug plate structure are arranged on the side wall of the suction pile structure; a drainage pipeline penetrates through the top of the suction pile structure and communicates with the interior of the suction pile structure and the water suction pump. A balance weight cabin and a ballast tank are arranged in the buoyancy tank structure, and a pressure discharging and loading system is arranged in the ballast tank; the supporting leg structures are arranged at the bottom of the buoyancy tank structure, and the buoyancy tank structure is pressed on the apron board structure through the supporting leg structures; a first eye plate connected with a mooring rope or a mooring chain is arranged on the outer side wall of the buoyancy tank structure. The technical problems that due to the fact that a traditional suction pile anchoring foundation is limited by the dead weight and the depth of penetrating into soil in the soil conditions such as sandy soil is insufficient, enough pressure difference cannot be generated in the closed space formed by the cylinder wall and the soil in the space outside the cylinder wall, and the suction barrel can reach the preset installation depth and the designed tensile strength and the designed pulling strength are solved.