46 results about "Soil core" patented technology

A method of estimating an amount of a sequestered carbon-based constituent in a volume of soil that includes taking a core soil sample of a sample volume of soil proximate at and below a root system associated with carbon soil accumulation from a biomass. The core sample is taken at a depth extending from an earthen surface, the depth having a depth range. The core sample is tested to provide a data set.

The invention relates to the field of geological exploration equipment, in particular to a geological exploration drilling machine for architectural design. Existing equipment is easy to fracture a soil core sample, and is easy to cause soil layer sequence disorder, so that the detection accuracy is influenced. A geological exploration drilling machine for building design comprises a movable chassis, a rotating frame installed on the movable chassis, a hydraulic push rod fixedly connected to the rotating frame and a lower moving plate fixedly connected to the hydraulic push rod. When the soil sampler is used, the five soil sampling cylinders are pushed to move by the five push rods when the push rod frame moves, the five soil sampling cylinders are pushed out of the soil sampler by the five push rods of the push rod frame, a worker pushes soil cores in the five soil sampling cylinders out of the soil sampling cylinders and sequentially puts the pushed-out soil cores into the storage box, and the soil cores can be taken out in sections, so that the taken-out soil cores are more complete; therefore, the soil core detection is more accurate.

The invention relates to the technical field of sampling, in particular to a soil stratified sampling device which comprises a drill rod, a storage container and a rotor wing, the drill rod can rotate around the axis of the drill rod, the storage container is embedded in the drill rod, the rotor wing is rotationally arranged on the drill rod, and a sampling channel capable of being communicated with the storage container is formed in the side, away from the rotating point of the rotor wing, of the rotor wing. In the sampling state, the rotor wings are rotationally screwed out from the interior of the drill rod, so that the sampling channel is communicated with the storage container, and in the drilling state, the rotor wings are rotationally screwed into the drill rod. The rotary wing is arranged, after the rotary wing is rotationally screwed out of the interior of the drill rod, the sampling channel on the rotary wing is located in the target soil layer and located at the position far away from the drill rod, and at the moment, soil around the sampling channel is not prone to being squeezed by the drill rod from top to bottom, so that upper-layer soil and lower-layer soil are not prone to being staggered; therefore, the soil sampling accuracy of the sampler is improved.

The utility model relates to the technical field of forestry, in particular to a seedling lifting mechanism for seedlings, which comprises a seedling lifting cylinder, the bottom of the seedling lifting cylinder is hinged with a plurality of moving parts used for closing the bottom opening of the seedling lifting cylinder, the seedling lifting cylinder is of a polygonal structure, the number of the moving parts is the same as that of the edges of the seedling lifting cylinder, and adjusting components are arranged at positions, corresponding to the moving parts, of the seedling lifting cylinder. A first grip is fixedly mounted on one side of the top of the seedling lifting cylinder; a driving assembly for controlling the plurality of adjusting assemblies to synchronously run is arranged on one side, close to the first grip, of the seedling lifting cylinder; by arranging the movable parts, the adjusting assembly and the driving assembly, on one hand, soil around the roots of seedlings can be loosened through vibration of the movable parts, so that the seedling lifting process is easier, on the other hand, the multiple movable parts can be closed together, the seedlings and soil core columns are sealed in the seedling lifting cylinder, and it is ensured that in the seedling lifting process, the seedling lifting efficiency is improved. The soil stem around the root of the seedling is kept complete, so that possible damage to the root system of the seedling during direct seedling pulling is avoided.

The invention relates to the technical field of irrigation and water conservancy engineering, and discloses a karst mountainous area water retention and stabilization zoned ridge construction method and a ridge, and the method comprises the following steps: S1, digging a foundation trench along a ridge line of a pre-built upper terrace; s2, a load-bearing outer slope body surrounding the upper terrace is built in the foundation trench, and a through drainage hole is formed in at least one lateral section of the load-bearing outer slope body; s3, laying an inverted filter layer on the inner side of the bearing outer slope body; s4, the inner side of the inverted filter layer is filled and tamped with clayed soil in a layered mode, and an anti-seepage soil core wall is formed; s5, the bottom of the foundation trench in the area defined by the anti-seepage soil core wall is backfilled with planting soil; according to the construction method of the zoned ridge for water retention and stabilization in the karst mountainous area and the ridge, the series of problems that the ridge in the karst mountainous area cannot be stabilized, cannot be stored and cannot be drained smoothly are solved, and structural stability, efficient moisture retention and smooth drainage of the ridge in the karst mountainous area under complex hydrogeological conditions are achieved.

The invention discloses a rock-soil sampling and identifying device which comprises a horizontal adjusting mechanism, a lifting driving mechanism and a rock-soil core drilling and sampling device, the horizontal adjusting mechanism comprises a supporting frame and a plurality of supporting rods. The supporting rods are distributed at intervals in the horizontal direction, and the supporting rods are movably connected with the supporting frame so that the supporting rods can ascend and descend relative to the supporting frame. The supporting rod is used for abutting against the ground so as to support the supporting frame. The lifting driving mechanism is mounted on the supporting frame; and the rock-soil core drilling and sampling device is mounted at the output part of the lifting driving mechanism. The rock-soil sampling and identifying device provided by the invention can stably work on the uneven ground.

The soil stratified sampling device comprises a tunneling barrel, a plurality of spiral grooves are formed in the side wall of the tunneling barrel at intervals, sampling barrels in threaded connection with the spiral grooves are installed in the spiral grooves, a connecting sleeve is fixedly arranged at the inner side end of each sampling barrel, a turbine shaft is assembled on the connecting sleeve in a sliding mode, and a plurality of spiral grooves are formed in the spiral grooves. Rotation limiting is achieved between the turbine shaft and the connecting sleeve through a key, a limiting groove assembled with the key in a sliding mode is formed in the side wall of the connecting sleeve, and a turbine is fixedly installed on the turbine shaft. A rotating shaft is rotationally installed in the middle of the tunneling barrel, and worm sections in meshing transmission with the turbines are arranged at the positions, corresponding to the turbines, of the rotating shaft. By adopting the soil stratified sampling device provided by the invention, the sampling convenience and efficiency are improved.

The utility model discloses a soil coring device, which relates to the field of geological exploration and comprises a support, a plurality of ground nails are arranged at the bottom end of the support, and a lifting mechanism is arranged in the support. One end of the lifting mechanism extends to the side edge of the support and is provided with a first motor, a soil coring bit is arranged at the bottom end of the first motor, and a quick release mechanism is arranged between the first motor and the soil coring bit; the lifting mechanism comprises a screw rod, a guide rod and a lifting plate; the top end of the screw rod is connected with a worm gear; the side edge of the worm gear is meshed with a worm, and a second motor is arranged at one end of the worm. According to the soil sampling device, soil sampling of geological engineering can be completed, soil sampling can be automatically completed, operation is simpler and more labor-saving, meanwhile, the stability of the device in soil is improved due to the fact that the ground nails and the support are used in cooperation, and therefore the overall stability of the device is improved.

The application relates to the field of sampling technology, in particular to a layered soil sampling device, which comprises a drill rod, a storage container and a rotor, the drill rod can rotate around its axis, the storage container is embedded in the drill rod, the rotor is rotationally arranged on the drill rod, a sampling channel capable of communicating with the storage container is arranged on the side of the rotor away from the rotation point, in the sampling state, the rotor rotates out of the drill rod to make the sampling channel communicate with the storage container, and in the drilling state, the rotor rotates into the drill rod. The rotor is arranged, after the rotor rotates out of the drill rod, the sampling channel on the rotor is located in the target soil layer and away from the drill rod, at this time, the soil around the sampling channel is not easy to be extruded from top to bottom by the drill rod to cause the upper and lower layers of soil to be dislocated, so that the soil sampling accuracy of the sampler is improved.

The embodiment of the invention discloses a solar photovoltaic / photo-thermal and geothermal system performance evaluation method and system and a medium. The invention discloses a solar photovoltaic / photo-thermal and geothermal system performance evaluation method. The method comprises the following steps: acquiring an original temperature value and an operating temperature value of a soil core layer; the COP value of the ground source heat pump is determined according to the ratio of the output energy to the consumed electric energy of the ground source heat pump of the solar photovoltaic / photo-thermal and geothermal system; according to the difference value of the original temperature value and the operation temperature value and the COP value of the ground source heat pump, a COP temperature loss ratio index is determined; determining a system COP value according to the output energy and the system power consumption of the ground source heat pump of the solar photovoltaic / photo-thermal and geothermal system; a system COP temperature loss ratio index is determined according to the difference value of the original temperature value and the operation temperature value and the system COP value; the geothermal resource utilization efficiency of the ground source heat pump is evaluated according to the COP temperature loss ratio index, and the comprehensive performance of the system is evaluated according to the COP temperature loss ratio index of the system, so that the performance change in the operation process of the system is accurately reflected.

The application relates to the field of geological exploration equipment, in particular to a geological exploration drilling machine for architectural design. The existing equipment is prone to breakage of the soil core sample and disorder of the soil layer sequence, thereby affecting the detection accuracy. The geological exploration drilling machine for architectural design comprises a mobile chassis, a rotating frame installed on the mobile chassis, a hydraulic push rod fixedly connected to the rotating frame and a downward moving plate fixedly connected to the hydraulic push rod. Movement of the push rod frame drives the five push rods to move the five earth taking barrels, the five push rods of the push rod frame push the five earth taking barrels out of the earth taking device, the staff pushes the soil cores in the five earth taking barrels out of the earth taking barrels and sequentially puts the pushed-out soil cores into the storage box. Since the soil cores can be segmented and taken out, the taken-out soil cores are more complete, and the detection of the soil cores is more accurate.

The invention discloses a carbon library optimized mixed soil conditioner for loess plateau orchards and application. The carbon library optimized mixed soil conditioner is prepared from the following components in parts by mass: 220 to 230 kg.ha-1 of urea, 130 to 140 kg.ha-1 of calcium superphosphate, 130 to 140 kg.ha-1 of potassium sulfate, 20 to 25 t.ha-1 of decomposed sheep manure and 5 to 10 t.ha-1 of apple branch derived biochar. The mass ratio of the decomposed sheep manure to the apple branch derived biochar is (25-35): 1. Through the ternary collaborative innovative design of the chemical fertilizer, the decomposed sheep manure and the apple branch derived biochar, breakthrough optimization of the carbon library function is achieved aiming at the loess plateau orchard soil core pain point, soil organic carbon, microbial biomass carbon, granular organic carbon, mineral combined organic carbon and other key components are synchronously improved, and the soil quality is improved. And the problem of carbon component imbalance of the traditional modifier is thoroughly solved.

The utility model discloses a novel cement-soil cored mixing pile which comprises a positioning pile, a lifting rod, a traction rope, a liquid storage tank, a stirrer and a base. A bottom plate is fixedly connected to the outer wall of one side of the stirring pile body, a limiting plate is fixedly connected to the outer wall of one side of the bottom plate, a steel bar is fixedly connected to the outer wall of one side of the bottom plate, a welding rod is fixedly connected to the outer wall of one side of the steel bar, and a positioning pile is arranged on the outer wall of the other side of the stirring pile body. According to the utility model, the core pile structure is designed, and the precast pile is pressed into the unsolidified cement soil mixing pile, so that the bearing capacity of the mixing pile is effectively increased, the use amount of concrete building materials is saved, the labor cost is reduced, and the construction cost required by engineering is reduced; meanwhile, the stirring and feeding integrated stirrer is designed, the stirrer is matched with the liquid storage tank, the four-spraying and four-stirring process can be effectively achieved, the operation efficiency of the device is effectively improved, the cost needed by the device is further reduced, and integrated control is effectively achieved.

This invention discloses a method for testing the shear strength of the frozen soil-concrete interface in underground excavation and obstacle removal operations. The steps are as follows: S1, pouring concrete test blocks of the same strength as the actual underground continuous wall under the working conditions; S2, placing the concrete test block into one end of a mold box, and filling the other end of the mold box with the same type of core soil as the core layer in the actual working conditions; S3, placing the mold box into a test block curing box, and freezing it at different set temperatures to form frozen soil-concrete samples; S4, placing the frozen soil-concrete samples into a testing machine, applying vertical pressure to the frozen soil-concrete samples, and applying dynamic load in the horizontal direction using a shear actuator; S5, obtaining the test results of the shear strength of the frozen soil-concrete interface at different temperatures, and analyzing the overall stability of the frozen soil in the core layer under dynamic load. This invention solves the technical dilemma of not being able to conduct in-situ shear strength tests on the frozen soil-concrete core layer on-site, reducing the significant risks of underground continuous wall and frozen soil core layer construction during obstacle removal.

The utility model relates to the technical field of pile foundations, in particular to a novel flow-state solidified soil core gravel pile combined structure which comprises a PVC pipe, a flow-state solidified soil core pile layer is arranged on the inner wall of the PVC pipe in a filling mode, a gravel pile layer is arranged on the outer side of the PVC pipe, an external thread boss is fixedly arranged on the outer wall of one end of the PVC pipe, and the PVC pipe is arranged in a steel casing through a supporting assembly and a positioning assembly. The threaded sleeve is rotated to move downwards along the outer threaded boss, the guide rod and the connecting rod are matched to push the cushion table to be clamped with the inner wall of the steel casing, then the position of the threaded sleeve is fixed to ensure that the PVC pipe is located in the center of the steel casing, and the flow-state solidified soil is poured into the PVC pipe to form the flow-state solidified soil core pile. And then sand is filled between the steel casing and the PVC pipe to form a sand-gravel pile, so that the sand-gravel pile forms an integral flow-state solidified soil core sand-gravel pile, and the bearing capacity of a foundation is improved by integrating the physical properties and erosion resistance of the flow-state solidified soil core sand-gravel pile.

The utility model discloses a solidified soil core wall sand gravel dam which comprises a solidified soil diaphragm wall, the solidified soil diaphragm wall is arranged in a bedrock supporting layer, curtain grouting is arranged at the bottom of the solidified soil diaphragm wall, a solidified soil core wall is arranged at the top of the solidified soil diaphragm wall, an upstream transition layer is arranged on the upstream side of the solidified soil core wall, and a downstream transition layer is arranged on the downstream side of the solidified soil core wall. A vertical drainage net is arranged on the downstream side of the downstream transition layer, the outer sides of the solidified soil core wall, the upstream transition layer, the downstream transition layer and the vertical drainage net are jointly filled with a gravel area, a drainage mattress is arranged at the downstream bottom of the gravel area and located at the downstream position of the vertical drainage net, and a drainage prism is arranged at the slope toe of the gravel area and located at the downstream position of the drainage mattress. According to the sand gravel dam with the solidified soil core wall, the problems that in the prior art, only a traditional asphalt concrete core wall and a clay core wall can be built, so that resources are wasted, and the manufacturing cost is high are solved.

The utility model discloses a kind of soil collection soil drill lifting devices, belong to soil sampling equipment technical field, for solving the problem that traditional manual extraction soil drill operation is laborious and easily disturbs soil sample. The device is mainly composed of triangular support, chain hoist and soil drill structure. Triangular support includes connecting structure and three metal foot poles, and the top of three metal foot poles is connected with connecting structure by bolt to constitute stable support;Chain hoist is hung below the connecting structure, provides mechanical lifting force;Soil drill structure bottom end detachably installs soil drill head, and the hook of chain hoist of soil drill structure adopts detachable connection mode. When using, triangular support is fixed on sampling point ground, and soil drill is inserted into soil layer, and labor-saving lifting is realized by chain hoist chain operation after soil drill. The device is suitable for sample collection operation of farmland deep soil or high compactness soil layer, and can effectively reduce human consumption and keep soil original structure.

The utility model discloses a novel riverway root stone rapid repairing device which comprises a river levee soil body, a plurality of root stones are piled on the surface of the river levee soil body, the novel riverway root stone rapid repairing device further comprises repairing root stones which are used for filling a root stone loss area when the root stone loss area exists in the plurality of root stones, and the repairing root stones are connected in the root stone loss area through fixing assemblies. The fixing assembly comprises square pipes, and a plurality of square pipes are fixedly installed on the side, facing the river levee soil body, of the repairing root stone and inserted into the river levee soil body. According to the foundation stone repairing device, the foundation stone loss area is filled with the repairing foundation stone, and the repairing foundation stone is fixed through the fixing assembly, so that when the foundation stone loss area appears on a river levee soil body, only the prepared repairing foundation stone needs to be fixed in the foundation stone loss area, and then the river foundation stone can be quickly repaired; therefore, the collapse phenomenon of the root stone area can be avoided to a certain extent.

The utility model discloses a soil coring device for environment detection. The soil coring device comprises a drill bit; the flow stopping ring is connected with the drill bit; the coring pipe is connected with the flow stopping ring opposite to the other side of the drill bit; the pipe cap is connected with the coring pipe opposite to the other side of the flow stopping ring; the limiting table is arranged on the flow stopping ring; and the flow stopping plate is hinged with the limiting table. According to the soil coring device for environment detection, the core barrel is prevented from being blocked, a rock core is prevented from being lost, and the coring rate is increased.

The invention belongs to the technical field of drilling sampling, and discloses a stable drilling device with an anti-falling mechanism, the stable drilling device comprises an equipment frame, an inner cavity of the equipment frame is slidably provided with a bearing plate along the vertical direction, the surface of the bearing plate is rotatably provided with a drilling cylinder, and the inner cavity of the equipment frame is provided with a drilling mechanism. The drilling mechanism comprises a lifting assembly and an autorotation assembly, an anti-falling mechanism is arranged in an inner cavity of the drilling barrel and comprises a side wall supporting assembly and a bottom wall cutting assembly, the side wall supporting assembly comprises a clamping rod, a containing part and an adjusting part, and the bottom wall cutting assembly comprises a cutting rope and a guide part. The guide part is arranged to be matched with the drilling barrel, the position of the cutting rope can be conveniently adjusted, the cutting rope can conveniently cut the bottom end of a soil core sample in an inner cavity of the drilling barrel, and the soil core sample is effectively prevented from being connected with soil on the outer side of the drilling barrel.

A soil coring device for hydraulic engineering detection comprises a sampling barrel (1) and a drill rod (2), a fixing column (3) is arranged at the top in the sampling barrel (1), a side groove (4) is formed in the outer wall of the sampling barrel (1), the bottom of the fixing column (3) is located in the side groove (4), an arc-shaped cover plate (5) is arranged in the side groove (4), the upper portion of the arc-shaped cover plate (5) is detachably installed on the fixing column (3) through a bolt, and the drill rod (2) is installed at the top of the sampling barrel (1); the soil sampler has the advantages that if the sampled soil is clamped in the sampling barrel, the arc-shaped cover plate can be opened to loosen and take out the soil sample conveniently. The hard soil can be quickly sampled.

The invention discloses a complex environment near-water double-row soil core steel sheet pile cofferdam and a construction method. The construction method comprises the following steps that firstly, construction preparation and survey setting-out are conducted; secondly, steel pipe piles are driven; thirdly, a guide frame is installed on the driven steel pipe pile; 4, mounting a double-layer steel pipe; fifthly, the steel sheet piles are guided and positioned through the guide frame, the double-layer steel pipe and the steel pipe piles, and the steel sheet piles are driven; sixthly, a waist beam and a connecting part are installed; 7, backfilling the soil material in the middle area of the double-row steel sheet piles to form a soil core, and compacting to ensure the stability; and 8, the guiding system is disassembled. The technical problems that in the complex water-facing environment, double-row steel sheet piles are not accurate in positioning, low in construction efficiency and poor in structural stability are solved, and the method has the advantages of being accurate in positioning, firm in connection and capable of being repeatedly used.

The application discloses a kind of energy storage single piles suitable for deep sea wind power and its construction method, it replaces the part of soil core in the bottom of wind power single pile foundation with energy storage device, process is simple, can greatly reduce engineering cost, can also solve the heat dissipation problem of energy storage device by using the stable temperature environment of ocean underground, can also enhance the soil plug effect of single pile, increase the overall quality and movement damping of single pile, realize the promotion of vertical, horizontal bearing capacity and vibration reduction of foundation Energy consumption.

This invention discloses a method for the fully enclosed continuous construction of the core wall area of ​​a gravel-soil core rockfill dam. The method includes arranging an inflatable canopy above the core wall area of ​​the gravel-soil core rockfill dam, fixing the edges of the inflatable canopy to the banks, upstream rockfill areas, and downstream rockfill areas, ensuring that at least the core wall filling area is within the covered area of ​​the inflatable canopy, and sealing the edges of the inflatable canopy; using an air supply device to supply air into the inflatable canopy, making the pressure inside the inflatable canopy greater than the external pressure, thus supporting the inflatable canopy and forming a closed construction space. The height of the closed construction space is greater than the predetermined height of the core wall of the gravel-soil core rockfill dam for this phase of construction. This invention uses a base fabric to construct the inflatable canopy and arranges a steel cable net on top, covering and enclosing the core wall filling area on the banks and upstream and downstream rockfill areas. The air supply device supplies air to the inside of the inflatable canopy, creating a closed space that provides shelter from wind and rain and insulation, allowing for normal construction even in winter and the rainy season, achieving continuous and safe construction throughout the year.

The invention discloses a piling assembly which comprises a drilling cylinder, a deslagging rod located in the drilling cylinder, a drill bit formed at the bottom end of the deslagging rod and a spiral blade arranged on the outer wall of the deslagging rod, and the drilling cylinder is provided with a soil core containing section not occupied by the spiral blade. An air exhaust channel for forming an air exhaust hole in the bottom end of the drill bit and an air injection channel for forming a plurality of air injection holes in the peripheral wall of the drill bit are arranged in the slag discharge rod; the drilling cylinder is driven to rotate, so that the bottom end of the drilling cylinder is drilled out of a pile hole, and a soil core enters the soil core accommodating section; the deslagging rod is configured to be driven to rotate so that the drill bit can break the soil core, the air suction hole sucks in part of soil slag, the air spraying hole sprays high-pressure air in the circumferential direction so as to loosen the soil core, and the spiral blade can continuously discharge the loosened soil core upwards. The invention further discloses a walking type pile driver. The device has the beneficial effect that the overall efficiency of piling and drilling is improved.

This invention discloses a soft soil geological exploration device and method, including a top plate with two semi-cylinders rotatably connected to it. The two semi-cylinders can rotate towards each other and merge to form a complete sampling cylinder, or rotate in opposite directions to open. A pressing component is provided on the inner wall of the semi-cylinders, an adjusting component is provided on the top plate, and a locking component is provided between the two semi-cylinders. Through the rotatable semi-cylinder structure, the two semi-cylinders can be rotated to the sides in opposite directions, allowing operators to directly and unobstructedly extract a complete columnar soil core, greatly simplifying the core extraction operation. At the same time, after sampling and before core extraction, the soil core is actively and uniformly compacted and reinforced circumferentially, which can re-compact loose soil particles, enabling the soil core to form a columnar body with a certain strength and integrity in a short time, thereby significantly improving the sampling success rate and core forming quality of easily disturbed and loose soil layers.

The invention discloses a double-layer external spiral type soil drilling and sampling device for mineral geological exploration, and relates to the technical field of geological exploration tools. An H-shaped frame is fixedly installed on the back of the bottom frame, an inclined plate is fixedly installed between the top of the bottom frame and the front side wall of the H-shaped frame, two limiting rods are symmetrically and fixedly installed on the side wall of the middle end of the H-shaped frame, a storage table is fixedly installed on the tops of the limiting rods, and a handrail mechanism is arranged on the top of the storage table. A motor program control mechanism penetrates through the surface of the armrest mechanism, and an electric telescopic rod is arranged in the motor program control mechanism. Through the double-layer soil sampling design of the outer drill and the soil sampling drill, the situation that a columnar soil core at the sampling position is prone to being interfered due to the fact that a single-layer drill bit makes contact with the soil layer all the time, soil of the soil layer at the high position of a sample rolls down, the original structure of the sampling soil core is damaged, and soil of soil layers with different depths is mixed is avoided; therefore, the accuracy of soil sample detection data is reduced.

The utility model discloses a cutting device for a coal mine geological exploration core sample, which relates to the technical field of geological exploration sampling equipment, and comprises a coring component, a cutting component is mounted on the coring component, a lifting component is mounted on the coring component, a storage component is mounted on the lifting component, the coring component comprises a conical plug-in, and the conical plug-in is connected with the cutting component. The coring assembly comprises a conical inserting piece, a fixing piece is fixedly installed on the conical inserting piece, the coring assembly further comprises a rotating shell, the rotating shell is rotationally installed on the fixing piece, a fixed connecting hole is formed in the rotating shell, and the two sides of the fixed connecting hole are each provided with a sliding shell; samples sampled for multiple times are completely stored through the containing box and the upper cover, the samples sampled for multiple times cannot be mixed up, when the sampling device is not used, the storage space is small and space is saved through the lifting assembly, sampling soil cores are cut off through the cutting assembly, operation is easy, and practicability is high.

The invention discloses a nail-shaped cemented soil ferrule combined pile, a construction drill bit and a construction method, solves the defect that a transition area of a nail-shaped pile in the prior art is easy to break and the problem that a pile making core and a variable cross-section cemented soil pile body are poor in collaboration, and has the beneficial effects of improving the overall bending strength and durability. According to the specific scheme, the nail-shaped cement-soil inserted core combined pile comprises a cement-soil pile body, the cement-soil pile body is a variable-section pile body, the cement-soil pile body comprises an upper expanding section, a conical transition section and a lower cylindrical section which are sequentially connected from top to bottom, the interior of the cement-soil pile body is hollow, and a prefabricated pile core is inserted into the hollow position of the cement-soil pile body; the precast pile core is attached to the lower cylindrical section, an occlusion structure is arranged in the conical transition section, cement grout is injected between the conical transition section and the precast pile core to form a reinforcing area, stirrups are arranged in the reinforcing area to avoid stress concentration at the reinforcing area, and a concrete reinforcing section is arranged between the upper expanding section and the precast pile core.

The application discloses a prefabricated pile soil core probe pressure penetrating type foundation pile integrity detection device and method, and belongs to the technical field of pile foundation detection. The device comprises a pipe pile to be detected, the top surface of the pipe pile to be detected is provided with a connecting frame, the top of the connecting frame is fixedly connected with a hydraulic telescopic rod, the bottom of the hydraulic telescopic rod is connected with a probe rod through a sleeve flange plate, and the end, away from the sleeve flange plate, of the probe rod is provided with a probe. The probe collects the soil fluctuation caused by the pile body vibration, and the integrity of the prefabricated spliced pile is judged according to the collected soil speed response time-depth signal. In addition to the basic physical and mechanical properties of the soil plug and the side friction resistance during penetration, the probe is also integrated with a three-way detector, and can collect the soil response caused by the pile body vibration.