21 results about "Ground settlement" patented technology

The application discloses a filling and paving device for preventing settlement of a factory building foundation, and relates to the field of foundation paving. The device solves the problem that the existing filling and paving device has a large roller size and is difficult to detect and fill local settlement. The device comprises a vehicle body, a storage box, a filling mechanism and a compaction mechanism. The filling mechanism comprises a compaction roller, a conveying screw and a control member. The bottom of the storage box is fixedly connected with a plurality of output grooves. The device controls the ground settlement state of the compaction roller in the rolling sensing area on the ground through the filling mechanism, and controls the output state of the filling material and the rotating speed of the conveying screw in parallel, so that the output rate of the filling material is faster at the position with a larger ground settlement amplitude. The control member controls the lifting of the compaction roller to control the compaction strength. The ground before detection and the ground after filling are compacted respectively through the compaction mechanism, the ground is kept flat, and the strength of the ground after filling is improved.

The present application relates to the field of ground settlement prediction, and provides a time effect analysis method for ground settlement induced by foundation pit excavation in soft clay area, comprising: determining the time required for foundation pit construction under all working conditions and the retaining wall side displacement curve; determining the soil parameters according to the Boltzmann viscoelastic foundation model; obtaining the viscous settlement of all working conditions by using the Boltzmann viscoelastic foundation model; setting t=0 and the boundary condition as the retaining wall side displacement curve of all working conditions to obtain the elastic settlement under different working conditions; setting the boundary condition as the retaining wall side displacement curve when the bottom plate strength is formed to obtain the viscous settlement of the soil outside the pit after the bottom plate strength is formed; and summing the elastic and viscous settlement to obtain the ground settlement of the to-be-solved arbitrary working condition. The present application overcomes the problem that the existing theoretical method cannot consider the time effect of the soil, thereby leading to the problem that the prediction of the ground settlement is not safe, and also considers the ground settlement after the bottom plate strength is formed without depending on the retaining wall side displacement, which is more engineering significant and has good popularization and application value.

The application relates to a radiation-proof building structure containing settlement joints and a construction method thereof, and relates to the technical field of radiation-proof building construction. The radiation-proof building structure containing settlement joints comprises two support plates, a plurality of outer wall bodies located between the two support plates, and all the outer wall bodies are sequentially arranged in a head-tail connection mode along the circumferential direction of the support plates. The outer wall bodies are connected with each support plate. The outer wall bodies are provided with wall surface settlement joints, the support plates are provided with ground surface settlement joints, the ground surface settlement joints and the wall surface settlement joints are connected with each other, the upper surfaces of the support plates are provided with ground surface radiation-proof layers and ground surface radiation-proof expansion devices covering the ground surface settlement joints, and the surfaces of the outer wall bodies are provided with wall surface radiation-proof layers and wall surface radiation-proof expansion devices covering the wall surface settlement joints. The wall surface radiation-proof expansion devices can automatically expand and contract to cover the wall surface settlement joints at all times, the ground surface radiation-proof expansion devices can automatically expand and contract to cover the ground surface settlement joints at all times, and therefore the possibility of radiation leakage to the outside is reduced.

This invention relates to the field of underground engineering structural safety assessment methods, providing a method for analyzing the longitudinal deformation and stress of rectangular pipe jacking under existing pressure pipelines. The method includes: establishing a simplified mechanical model of the pressure pipeline; establishing a prediction model for ground settlement caused by the rectangular pipe jacking by modifying the Peck empirical formula, and establishing an analytical relationship between the vertical displacement of the pipeline and the free displacement of the soil; solving the longitudinal displacement field of the pipeline caused by the new rectangular pipe jacking under the pipeline based on the displacement compatibility equation; and applying the Mises stress criterion to calculate the composite stress state of the pipeline, thereby achieving a pipeline stress safety assessment. This invention proposes a calculation method considering the coupling of internal pressure, pipeline, and soil, and theoretically establishes a quantitative relationship between displacement and stress of municipal pipelines caused by the new rectangular pipe jacking under the pipeline. This method can consider the influence of internal forces in municipal pipelines, providing a reliable theoretical method for the safety assessment of rectangular pipe jacking under municipal pressure pipelines.

This invention relates to the field of tunnel boring machine (TBM) construction technology and discloses an intelligent prediction method for surface settlement considering unquantifiable parameters during TBM tunneling. The method includes: selecting a main cross-section to be predicted and historical auxiliary cross-sections with approximate unquantifiable parameters based on spatial proximity; constructing a dual-branch joint architecture for the main and auxiliary cross-sections, and training it using a neural network with shared network weights through deep learning to obtain an intelligent prediction model for surface settlement; and obtaining predicted settlement data for the main cross-section based on the intelligent prediction model. By constructing a dual-branch joint architecture for the main and auxiliary cross-sections and using deep learning with shared network weights, an intelligent prediction model for surface settlement with good generalization ability is obtained. This indirectly considers unquantifiable parameters and uses reverse reasoning to obtain accurate predicted surface settlement data, improving the predictability and safety of TBM construction.

This utility model relates to the field of land settlement simulation technology, and discloses a land settlement device for simulating well flow stratified pumping, including a model box, an injection pipe, a pumping pipe, a water pump, a pressure measuring pipe, an earth pressure sensor, and a pore pressure sensor. The model box is cylindrical and is filled with alternating layers of clay and sand. A pumping pipe is installed along the central axis of the model box, and the injection pipe extends into it from the outside to the inside circumferentially. The pumping pipe has a multi-layered casing structure, with sealing airbags between the casings. The inner casing extends to a deeper sand layer, and the outer casing extends to a shallower sand layer. The pressure measuring pipe is installed within the depth range of each of the multiple sand-filled layers. Each casing of the injection pipe is connected to a water pump. Earth pressure sensors and pore pressure sensors are uniformly and symmetrically arranged inside the model box. This utility model aims to construct a geotechnical test chamber and simulate the radial flow field characteristics of a pumping well point through stratified pumping control, providing support for water-based well drilling projects.

The application provides a vibration test bed multi-point settlement monitoring system, a monitoring device and a method, and relates to the field of settlement monitoring, and comprises a laser, a reflector and a settlement warning device; the laser is arranged on a foundation detection pile and is used for emitting multiple collimated lasers; the reflector is arranged as multiple along the side wall of one side of the vibration test bed and is used for reflecting at least one collimated laser to the vicinity of the support foundation arranged in lines; the settlement warning device is arranged on the support foundation and is used for collecting the collimated laser signal; when the settlement occurs and the collimated laser cannot be collected, a signal is sent. The application can continuously monitor the settlement of each support point in an economical way, can ensure timely warning in the case of uneven ground settlement, can avoid safety accidents caused by uneven stress of each support point in the construction process, can avoid uneven settlement of the vibration isolator foundation after construction, and can avoid safety accidents in the experiment process.

This application discloses a method, apparatus, equipment, and medium for testing the instability of a physical model of ground settlement. The method includes: measuring the vertical settlement / heave at M displacement monitoring points in a soft soil layer using M single-point settlement gauges, and measuring the lateral / vertical pressure at N pressure monitoring points in the soft soil layer using N micro earth pressure cells; detecting the stability of the soft soil layer using the vertical settlement / heave at the M displacement monitoring points and the lateral / vertical pressure at the N pressure monitoring points; after the soft soil layer is detected to be stable, continuously pumping sand from the sand layer and continuously injecting water into the sand layer for a predetermined time as the current sand pumping; after the current sand pumping and water injection is completed, repeating the operation of detecting the stability of the soft soil layer; after the soft soil layer is detected to be stable, continuously pumping sand from the sand layer and continuously injecting water into the sand layer for a predetermined time as the next sand pumping, repeating the above operation until the soft soil layer is detected to be unstable.

This invention relates to a mud density detection and adjustment device for pipe jacking construction, belonging to the field of pipe jacking technology. It includes a controller, a pipe jacking machine, and a working shaft formed by excavation from the ground. The pipe jacking machine enters the soil layer through the lower side wall of the working shaft. A mud-water chamber is provided inside the pipe jacking machine. A mud treatment device and a mud-water mixing device are connected sequentially by pipelines on the ground. An inlet and an outlet are respectively provided at the bottom of the mud-water chamber. An outlet pipeline connects the outlet to the mud treatment device, and an inlet pipeline connects the mud-water mixing device to the inlet. This invention innovatively forms a framework capable of dynamically adjusting the "concentration" of the liquid medium during operation, thereby achieving fully automatic and precise adjustment of the "concentration" of the working medium. This significantly improves construction efficiency, enhances the control of face stability and reduces ground disturbance, increases the safety factor during pipe jacking, and effectively controls ground settlement.

The application discloses a kind of upper soft lower hard stratum shield tunneling's synergic control system and method, belong to shield tunnel construction technical field, including shield machine, circumferential multidimensional perception array, intelligent radial compensation system and intelligent synergic controller, circumferential multidimensional perception array includes flexible film pressure sensor array and micro displacement sensor array, real-time perception shield body circumferential contact pressure and gap change;Intelligent radial compensation system includes multiple groups of independently controlled telescopic radial grouting pipe;Intelligent synergic controller is built in attitude-settlement coupling control model, with attitude parameter, circumferential pressure distribution and shield tail gap as input, synchronous generation partition thrust fine tuning, active radial compensation and synchronous grouting pressure equalization three-way synergic instruction, form perception-decision-execution-verification closed loop control.The application solves the engineering contradiction of attitude in upper soft lower hard stratum then loss settlement, control settlement then damage attitude, reduce ground settlement, improve attitude control precision.

This invention discloses a foundation settlement monitoring system, comprising a primary settlement monitoring module, a secondary settlement monitoring module, a primary collapse module, a secondary collapse module, and an edge early warning module. Both the primary and secondary settlement monitoring modules acquire foundation location information through a location data acquisition device and fit a settlement surface model based on the location information. The primary settlement monitoring module is a spherical settlement fitting module, and the secondary settlement monitoring module is a planar closed-shape settlement fitting module. The primary and secondary settlement monitoring modules are spatially superimposed. The primary collapse module predicts changes based on the model of the primary settlement monitoring module, and the secondary collapse module predicts changes based on the model of the secondary settlement monitoring module. The edge early warning module, based on the change prediction information from the primary and secondary settlement monitoring modules, marks and alarms the overlapping change areas on the vertical projection.

This invention provides a ground settlement deformation monitoring and early warning device and its usage method. The ground settlement deformation monitoring and early warning device includes: a settlement tube, a settlement magnetic ring, and multiple sensing and correction components for correcting deviation and jamming of the settlement magnetic ring during settlement. The settlement magnetic ring is slidably sleeved on the settlement tube, and the multiple sensing and correction components are disposed between the inner wall of the settlement magnetic ring and the outer wall of the settlement tube. The settlement magnetic ring moves along the outer wall of the settlement tube as the soil settles. The sensing and correction components are used to automatically correct deviation or jamming of the settlement magnetic ring during settlement.

The application discloses a fluid solidified soil for backfilling of nuclear power construction buildings and a preparation method thereof. The fluid solidified soil comprises raw materials and mass fractions of the raw materials as follows: weathered rock soil 50-70 parts, nuclear power solidifying agent 6-10 parts and water 25-35 parts. The nuclear power solidifying agent comprises water hardening adhesive components 25-40%, composite active enhancement components 45-65%, composite excitation components 8-15% and multifunctional additive components 2-6%. The fluid solidified soil has high mechanical properties, corrosion resistance and kinetic properties, and can reach more than 350 kPa in bearing capacity of replacement foundation, more than 300 m / s in shear wave velocity, can meet the performance requirements of foundation replacement of nuclear power station construction buildings, and can reduce permanent ground settlement of the construction buildings under static load or strong earthquake action.

This application relates to the field of tunnel segment technology and discloses a grouting support for shield tunnel segment structures. In this application, a laterally rotatable segment support structure is provided, and the support rods have the ability to adjust their longitudinal angle. The lateral rotation structure allows the support structure to adapt to different segment assembly positions and angular deviations, especially in curved sections or variable cross-section areas. Rotation adjustment can compensate for lateral offsets during segment installation, avoiding uneven stress caused by insufficient contact between the support point and the segment. Simultaneously, the longitudinal angle adjustment of the support rods ensures compensation for local segment deformation. When a segment tilts slightly due to assembly errors or ground settlement, the support rods can maintain perpendicular contact with the segment through angle fine-tuning, reducing local pressure concentration and preventing segment breakage due to compression. The synergistic effect of the two directional rotations ensures the positional accuracy of the segments during grouting and reduces the time cost of repeated manual adjustments.

The application discloses a kind of based on unmanned plane and laser radar data fusion's roadbed settlement monitoring method, first, the camera and laser radar two kinds of sensors carried on unmanned plane platform are calibrated, to eliminate the error influence caused by distortion and time space asynchronization;Subsequently, flight route is demarcated;Next step, unmanned plane flies along construction line, and data is collected;The point cloud data and image data collected are respectively extracted features, point cloud data uses point-based network, then uses AFF-attention feature fusion module to carry out feature fusion;The data after fusion is input to target detection network to generate bounding box;Image data after completing target identification are spliced to obtain the real scene map of large iron construction site;Then, the difference is obtained after the splicing of multiple period point cloud data, and the ground settlement visualization map is obtained according to the value size, and layer fusion is carried out with the real scene map.

This invention discloses a trenchless removal device and method for abandoned pipelines. A vibrating device and a grouting pipe are installed on an electric trolley. Before removal, the trolley vibrates the abandoned pipeline back and forth to reduce the density of the surrounding soil, facilitating removal. Before grouting, an air bladder is inflated so that it abuts against the inner wall of the abandoned pipeline, sealing the gap between the grouting pipe and the abandoned pipeline to prevent concrete from flowing back into the abandoned pipeline during grouting. Grouting is performed simultaneously with pipeline removal, promptly filling the voids left after removal. The concrete solidifies rapidly after flowing out of the grouting pipe, minimizing ground settlement. This construction method efficiently removes underground pipelines, completing the removal and grouting processes in one operation, offering advantages such as high safety and efficiency.

The utility model relates to the technical field of ground settlement observation, concretely to a ground settlement observation scale, including support cylinder, the middle part of the top inner wall of support cylinder is fixed with guide rod, and the outer wall of guide rod is slidably provided with guide sleeve, the outer wall of guide sleeve is fixed with the movable cylinder of sleeve setting in the outside of guide rod, and the bottom fixed mounting of movable cylinder has embedded plate, the outer wall of movable cylinder and the outer wall of support cylinder are provided with measuring assembly, the top fixed mounting of support cylinder has universal level, and the outer wall of support cylinder is provided with the verticality adjusting assembly of equidistance distribution, the utility model can realize direct reading to settlement data, and through the mutual cooperation of multiple verticality adjusting assemblies, can fine tune support cylinder from different directions, ensure that the scale can also reach vertical state under the complex ground environment fast, solved the problem that the present scale is difficult to guarantee the verticality precision of surveying datum because of lacking convenient adjusting mechanism.

This application discloses a method, device, equipment, medium, and product for identifying building deformation risks, belonging to the field of building deformation risk assessment technology. The method includes: constructing a multi-level index system for building deformation risk assessment in ground settlement areas; taking building deformation risk level assessment as the target layer; selecting ground settlement susceptibility, building structural attributes, InSAR deformation monitoring, and external construction disturbance as the criterion layers; and refining the criterion layers by setting index layers; performing membership quantification on each index in the index layers to obtain the membership degree vector of each index; constructing the weights of each level of indexes based on the analytic hierarchy process (AHP); constructing a fuzzy evaluation matrix based on the membership degree vectors; and obtaining the comprehensive risk membership degree vector of the target layer based on the fuzzy weighted average method according to the criterion layer weight vectors and the index layer weight vectors; and determining the final deformation risk level of the building based on the principle of maximum membership degree. The embodiments of this application can improve the accuracy of identifying building deformation risks.

This invention provides a construction method for a new dike intersecting with an existing bridge in a flood storage area. The intersecting structure includes an existing bridge, a new dike, a flood wall, a scour-resistant pier structure on the flood storage side of the flood wall, and a seepage-proof pier structure on the safe side. The flood wall is located at the intersection of the new dike and the existing bridge. A new seepage-proof wall is installed at the bottom of the flood wall, and wing walls are installed at the junction of the flood wall and the new dike. The flood wall is a hollow box-type reinforced concrete structure. The lower hollow box is filled with concrete to form a counterweight base. The upper hollow box has water holes at the bottom and air holes at the top. During flood storage, water automatically fills the upper hollow box through the water holes to increase its self-weight and improve its stability against floods. This invention reduces the additional stress level of the foundation, avoiding excessive additional stress caused by adding soil to the middle of the bridge piers or adding soil to the new abutments, which could lead to ground settlement and improve the stability of the flood wall during water retention.