22 results about "Cave-in" patented technology

The invention discloses an intelligent identification method for geometric parameters of a karst cave in an engineering construction area, and relates to the technical field of foundation pit engineering, and the method comprises the steps: carrying out the preprocessing of a karst cave parameter data set, and extracting key feature parameters; solving a forward mapping model among karst cave parameters, ground surface settlement displacement and foundation pit side wall inclination displacement through partial derivative to obtain a kernel function, and constructing a nonlinear mapping relation; and performing iterative optimization on the initial parameters by adopting a multi-path random jump search algorithm, and performing inversion to obtain optimal karst cave geometric parameters matched with actual monitoring data. According to the method, through combination of an intelligent optimization algorithm and a mapping model, accurate identification of karst cave parameters is realized, and reliable technical support is provided for safety evaluation of foundation pit engineering and drilling of a soil layer.

The application provides a cave sampling device for prospecting, and relates to the field of prospecting.The sampling device is mainly composed of an upper fixing disc, a lower fixing disc, a lead screw, a light screw, a motor, a sliding block, a sampling drill, a transmission mechanism, a feeding mechanism and a material receiving chute.The upper fixing disc and the lower fixing disc are used for fixing the sampling device in a cave.The sliding block, the lead screw, the light screw and the motor form a linear motion mechanism moving in the vertical direction.The feeding mechanism and the transmission mechanism are used for driving the sampling drill to sample.The material receiving chute is arranged below the sampling drill and is used for collecting the falling geological samples.The application realizes continuous sampling of the cave in a certain depth interval, and can put the drilled geological samples into the corresponding height storage compartment, so that the geological exploration personnel can intuitively and clearly establish the relationship between the sampled geological samples and the cave depth.The application has a clever and compact structure, and minimizes the outer diameter of the sampling device, thereby greatly reducing the excavation cost of the cave.

1. Name of the product in this design: Camera (W). 2. Applications of this design: for inspecting the interior of pipes such as water supply pipes, air conditioning pipes, cable pipes, pipe vacuum systems, lead industry pipes, underground pipes in buildings, rescue work in confined spaces, exploration of underground caves in the wild, and underwater riverbed scientific research. 3. The key design feature of this product is its shape. 4. Images or photos that best illustrate the design key points: usage status reference diagrams.

This application relates to a method for treating karst caves in tunnels, belonging to the field of underground structure engineering technology. The method includes dividing the existing tunnel floor slab into multiple construction sections; in the current construction section, multiple construction holes are opened in the floor slab using a skip-section method, with the size of the construction holes configured to provide operational space for rebar splicing and waterproofing layer repair; grouting is performed into the soil beneath the existing tunnel through the construction holes; after the grouting is deemed satisfactory, the floor slab rebar and waterproofing layer at the construction holes are repaired; after completing the treatment of the current construction section, the process is repeated in the next construction section until all construction sections are treated. By opening relatively large construction holes and specifically configuring sufficient operational space for rebar splicing and waterproofing layer repair, even if the floor slab rebar is cut during construction, standardized splicing operations and waterproofing layer restoration can still be performed using this space.

The present application relates to the safety factor range determination method, device, equipment and medium of karst cave slope, method includes: obtaining the maximum and minimum of the slope in X direction, Y direction;Based on the maximum and minimum of the slope in X direction, according to the vertical division interval, the slope is divided along X direction, and a plurality of vertical units are obtained;Based on the maximum and minimum of the slope in Y direction, the unit body of random height is generated in each vertical unit;According to the unit body, the distribution of rock-soil mass and karst cave in each vertical unit is determined, and the simulation model of karst cave slope is constructed;The simulation model of karst cave slope is calculated, and the safety factor of the slope is obtained;A plurality of groups of safety factors of the slope are obtained by iterative calculation, and the range of the safety factor of the slope is determined based on each group of safety factors of the slope.The present application can provide reliable data support for the engineering design of karst cave slope, and safety and engineering economy are taken into account.

The invention discloses a method and a device for simplifying a numerical well testing geological model of a fracture-vug type oil and gas reservoir. The method comprises the steps that according to the radius of a karst cave in the fracture-vug type oil and gas reservoir and the distance between the karst cave and a test well, the bottom hole pressure derivative sinking amplitude caused by the karst cave is determined according to the corresponding relation between the bottom hole pressure derivative sinking amplitude caused by the karst cave and the corresponding relation between the karst cave radius and the distance between the karst cave and the test well; the sinking amplitude of the bottom hole pressure derivative is the sinking amplitude of the lowest point in a double logarithmic curve of the bottom hole pressure derivative and time relative to a set bottom hole pressure derivative baseline; and in the process of establishing the numerical well testing geologic model of the well testing, deleting the karst cave of which the sinking amplitude caused by the bottom hole pressure derivative is smaller than a set sinking amplitude threshold value. According to the method, the concept of the sinking amplitude of the bottom hole pressure derivative caused by the karst caves is innovatively defined, the karst caves are screened on the basis of the concept, and reasonable simplification of the numerical well testing geologic model of the fracture-vug type oil and gas reservoir is achieved.

This invention discloses a construction method for a large semi-filled karst cave in a karst tunnel. The method includes the following steps: first, applying wire mesh and shotcrete to the cavity area of ​​the karst cave wall for protection; then, installing grouting pipes on the tunnel face, surrounding rock, and non-cavity areas of the karst cave wall, and injecting cement-water glass double-liquid grout into the surrounding soil for reinforcement, ensuring the stability of the karst cave during construction, avoiding the formation of a large plastic zone during tunnel excavation, and simultaneously blocking water; filling the karst cave below the tunnel with slag, preserving the original karst pipes, and installing C20 concrete backfill and C35 reinforced concrete slabs across the karst cave to prevent uneven settlement of the tunnel; draining karst water in the karst cave section in two parts, relying on the original karst pipes and the tunnel drainage system respectively, to avoid excessive load on the tunnel support system due to excessive water pressure inside the karst cave; and adding a steel-framed concrete arch on the outside of the tunnel's initial support to prevent unstable falling rocks inside the karst cave from causing impact loads on the main tunnel support structure.

The invention belongs to the technical field of karst cave treatment, and particularly relates to a limestone stratum soft filling large karst cave combined grouting reinforcement method. Aiming at the pure mud filling karst cave or the cohesive soil filling karst cave, the karst cave is reinforced in a combined mode of high-pressure rotary spraying and segmented grouting, high-pressure rotary spraying holes are formed in the edge of the karst cave, and segmented grouting holes are formed between the high-pressure rotary spraying holes; high-pressure jet grouting reinforcement is carried out firstly, and segmented grouting reinforcement is carried out after the high-pressure jet grouting reinforcement structure stands still and is stable; the homogenization of a filling body is realized through high-pressure jet grouting pretreatment, micro gaps are filled through grouting reinforcement, the uniformity and compactness of a consolidated body are remarkably improved, and the bearing capacity and the impermeability are superior to those of a single method; the problems that slurry is prone to layering when the karst cave is filled with pure slurry and soil of the karst cave filled with cohesive soil is difficult to break are solved, the uniformity of a consolidated body is improved, and the requirement for stability of a shield tunnel face is met. And the reinforcing effect (bearing capacity and impermeability) and the construction efficiency are both considered.

This invention discloses an auxiliary process for laying vertical buried pipes for shallow geothermal energy in karst areas, belonging to the field of vertical buried pipe technology. The process includes the following steps: detecting the distribution of karst caves in the vertical direction of the heat exchange hole, planning the grouting location of the karst caves, and the distribution of rammed earth and grouting layers in the heat exchange hole; lowering a U-shaped pipe through a ramming hammer, with the U-shaped pipe bend fixedly installed on an anchoring precast plate, to the bottom of the heat exchange hole; lowering the ramming hammer to the designed height of the first grouting layer, and starting grouting into the heat exchange hole; raising the ramming hammer to the designed height of the first rammed earth layer, releasing soil into the heat exchange hole, and repeatedly raising and lowering the ramming hammer to compact the soil; raising the ramming hammer to the designed height of the second grouting layer, and starting grouting into the heat exchange hole. This invention uses grouting layers to block karst caves in the heat exchange hole in karst areas, and the alternating distribution of grouting and rammed earth layers improves the heat exchange efficiency of the U-shaped pipe.

The present application relates to a kind of underground TBM disassembly cave construction method, the TBM disassembly cave includes TBM receiving cave, cutterhead main machine retreat cave, blasting buffer zone, TBM disassembly cave, TBM loading transport cave in turn by one end to the other end longitudinally, TBM disassembly cave includes lower step, middle step, upper step;Including the following steps: first TBM tunneling cave construction, second lower step blasting excavation support, third middle step blasting excavation support, finally lower step blasting excavation support, finally construction gantry crane rail foundation, install gantry crane inside the disassembly cave.This application changes the traditional drill and blast method bench method excavation sequence, and combines with shallow hole loose weak blasting, increases the blasting free surface, reduces the minimum resistance line, so as to reduce the shock wave and flying stone distance produced by blasting vibration, increase the protection to the lining structure of finished hole section, greatly improve the construction efficiency, construction risk is low, lay the foundation for the advance disassembly of TBM, with good economic benefit.

The present application belongs to the technical field of oil and gas well drilling, and particularly relates to an experimental device and method for simulating overflow and leakage coexisting well killing process of fracture-cave type stratum. The device comprises a simulated wellbore system, a simulated drilling fluid circulation system, a simulated fracture-cave type stratum structure system, a simulated gas injection system, a data acquisition system and a data processing system. The simulated wellbore system is used for simulating the drill string and the wellbore in the experiment. The simulated drilling fluid circulation system is connected with the upper part of the wellbore system and is used for simulating the injection and return of the drilling fluid. The simulated fracture-cave type stratum structure system is connected with the lower part of the wellbore system and is used for simulating the fractures and the caves in the experiment. The simulated gas injection system is used for injecting gas into the fracture-cave type stratum structure system. The data acquisition system and the data processing system are used for collecting and processing the experimental data in the experimental device. The experimental device and method provided by the present application aim to solve the problem that the prior art cannot comprehensively simulate the overflow and leakage coexisting well killing process of the fracture-cave type stratum.

The utility model relates to the technical field of karst cave treatment, in particular to a karst cave treatment device used in pile foundation construction, which comprises a movable support frame, a slurry stirring structure is clamped and embedded on the movable support frame, and a slurry flow increasing pressure structure is arranged on one side of the slurry stirring structure. The slurry flow increasing pressure structure comprises a compressed air tank, an air compressor, an exhaust pipe and a ball valve adjusting switch, the air compressor comprises a compression cavity, a rapid reciprocating telescopic rod, a compression sliding plug and an air inlet groove hole which are arranged side by side, the bottom of the slurry stirring structure is communicated with a slurry discharging pipe, and the tail end of the exhaust pipe is connected with the slurry discharging pipe. According to the utility model, pressurization, storage and one-way discharge of air can be integrated through the slurry flow-increasing pressure structure, so that compressed air does not need to be supplemented from the outside during operation during long-time operation, the preparation work before the device is used is simple, and workers can use the device in different operation places conveniently.

The utility model discloses a kind of closed construction framework and prefabricated mould device for multilayer karst geology pile foundation, comprising: pile hole structure;Tool steel casing, positioning setting in the pile hole structure;Prefabricated closed ring assembly is provided with several groups of prefabricated closed ring;Several groups of prefabricated closed ring are all located inside the pile hole structure, and several groups of prefabricated closed ring are based on the tool steel casing and sequentially adjustable long type joint connection setting.Solved the technical problem that permanent steel casing follows and fills in when carrying out pile foundation construction in the prior art for the karst cave deeper and the geological of multiple karst caves in string-bead type layered distribution.

The application belongs to the field of karst cave detection, and specifically discloses a device and a method for detecting the edge of an underground karst cave, which comprises a supporting rod, a fixed seat arranged at the lower end of the supporting rod, a first probe arranged on the bottom surface of the fixed seat, a plurality of telescopic rods circumferentially hinged to the fixed seat, a second probe arranged at the distal end of each telescopic rod, a magnet block arranged above the telescopic rods on the fixed seat, a driving motor detachably connected to the upper end of the supporting rod, and the driving motor drives the supporting rod to rotate at a gradually increasing rotating speed, the telescopic rods first rotate in a horizontal state and are attracted by the magnet block in the process of increasing the rotating speed, and then the telescopic rods are in an elongated state and drive the second probe to approach the edge of the karst cave as the rotating speed continues to increase. The device detects and samples the internal structure of the karst cave in the form of photographing, can detect the detail area of the side wall of the karst cave at the same time, is convenient for analyzing the structural features of the karst cave, and is more conducive to determining the amount of filling material.

The application discloses a kind of pile foundation karst cave rapid leak stoppage method, belong to the field of pile foundation construction in geotechnical engineering.The method is aimed at the technical problems such as mud loss when pile foundation drilling hole meets fissure or karst cave in karst area, traditional method is high in cost, low in efficiency, a kind of fast and efficient leak stoppage scheme is presented.The core is that: in ground, sulphoaluminate fast hardening cement blanket is connected by magic tape at the beginning and end, and is prefabricated into sleeve structure wrapped annular hydraulic water bag;The whole pre-assembled body is lowered to the leakage passage in the pile hole;Water is filled into the water bag to make it expand radially, and the magic tape is opened, so that the cement blanket is pressed tightly on the side wall of the pile hole and covers the leakage passage;Maintain water bag support until cement blanket solidifies to form a wall.The method integrates detection, prefabrication and overall construction, realizes the accurate positioning and rapid curing of leak stoppage material, significantly improves the construction efficiency, success rate and reliability, and greatly reduces the treatment cost.

The application discloses a drainage device based on a karst area tunnel, a first water well is vertically arranged on a water gushing side of a water-rich karst cave, a second water well is vertically arranged on a water gushing side of the water-rich karst cave, the karst tunnel is provided with a drainage groove, the drainage groove is communicated with the bottom of the second water well through a drainage pipeline, the left and right ends of a first connecting pipeline are respectively communicated with the first water well and the second water well, the communication position of the first connecting pipeline and the first water well is above the middle part of the first water well, and the sludge in normal water flow is affected by gravity and is settled on the bottom of the first water well; when the water level in the well is higher than the first connecting pipeline, the water flows into the second water well from the first connecting pipeline and is finally drained from the drainage groove, so that the sludge and the normal water flow are separated, the device is suitable for water-rich karst caves in various forms, has small limitations, wide application range and good application prospect.

The application discloses a kind of based on unmanned aerial vehicle remote sensing and deep learning's coastal beach benthic animal cave methane emission total flux estimation method and system, belong to double carbon environmental monitoring and remote sensing technology cross field, method includes: in low tide period, using unmanned aerial vehicle aerial survey to obtain original remote sensing data, generate sub-centimeter level digital orthophoto that can identify cave individual;Digital orthophoto is segmented using sliding window strategy;Image subset is input into deep learning detection model of integrated attention mechanism, and the output cave detection result;Based on geographic coordinates, the detection results of each subset are fused and deduplicated, and the total number of caves is counted;Based on the total number of caves and the average methane emission flux of measured single cave, estimate the regional methane emission total flux.The present application realizes the high-precision identification and automatic counting of microorganism structure, and can effectively count the increase and decrease of the total methane emission flux caused by benthic animal caves in the coastal beach.

This utility model provides a karst cave treatment device for pile foundation construction, comprising: a mounting base, a circular hollow base, a connecting pipe, a pipeline, a valve, a conveying assembly, two discharge heads, and a discharge assembly; the connecting pipe is located at the center of the mounting base; the circular hollow base is connected to the bottom of the connecting pipe; the pipeline is connected to the surface of the circular hollow base; the valve is installed on multiple pipelines; the conveying assembly is located at one end of the valve; and the discharge assembly is located at the bottom of the circular hollow base. This utility model provides a karst cave treatment device for pile foundation construction. This device facilitates the conveying of concrete through the conveying pipe and connecting pipe into the interior of the circular hollow base. The side karst caves can then be filled using the pipeline and conveying assembly. The discharge assembly at the bottom of the circular hollow base allows for filling of the bottom karst caves, thereby increasing the convenience of using the entire device in karst caves.

The application discloses a kind of methods and systems for generating palaeokarst cave planar distribution map, it is related to oil reservoir exploration and development technical field, method includes: the drilling, well logging, well logging data of single well are comprehensively interpreted, and single well cave development is comprehensively interpreted;Collect and arrange the coordinates of sample well in research area to form coordinate plane, and show;Obtain relatively sensitive seismic attribute of cave in research area;Cave threshold calibration is carried out to the extracted seismic attribute, and the development range of predicted cave reservoir is determined;Determined cave threshold contour is used as cave boundary range curve data output;The cave boundary curve output is processed;Cave planar distribution map is generated.A kind of system for generating palaeokarst cave planar distribution map is used to realize a kind of method for generating palaeokarst cave planar distribution map.The application has supporting effect for well site deployment, reserves estimation, remaining oil distribution prediction and other aspects in oil and gas field development, and can be used to guide the development of carbonate reservoir.

The application discloses a kind of fracture-cave type reservoir flow channel and cave structure inversion method, comprising the following steps: S1: establishing fracture-cave type reservoir oil-gas-water three-phase multicomponent flow mathematical model, obtains fracture-cave type reservoir fluid flow numerical simulation method;S2: construct inversion variable space, establish production dynamic fitting objective function;S3: extract multi-source data constraint information, and flow channel and cave structure inversion are carried out according to multi-source data constraint information.The beneficial effects of the present application are: not only can explain the geometric structure of flow channel and cave in fracture-cave type reservoir, but also can explain the flow property of flow channel and the effective volume space of cave, realize the dynamic connectivity analysis of flow channel and cave structure in fracture-cave type reservoir, and through the explanation of flow channel and cave structure and property, it can also provide scientific basis for developers, and can realize the efficient development of fracture-cave type oil and gas reservoir.

The application discloses a karst tunnel large-scale cave treatment method, relates to the technical field of building construction, and acquires the accurate position and attribute data of the underground cave through an advanced detection robot, adopts an artificial intelligence algorithm and a data analysis platform, automatically identifies and classifies the cave, generates a three-dimensional model of the cave, improves the efficiency and accuracy of treating the cave, reduces the labor and time cost, presents the position, size and attribute of the cave in a visual manner, and automatically grouts the device and intelligently plans the path to make the grouting engineering more accurate and controllable, the grouting strategy can be adjusted in real time, adapts to the change of the geological condition and the distribution of the cave, reduces waste, issues an alarm immediately when an abnormality occurs through real-time monitoring of the surface subsidence, the underground water level and the grouting effect, and the real-time monitoring and feedback mechanism is helpful to timely find problems and take necessary measures, so that the safety of the engineering is improved.

The invention discloses an earth surface directional drilling construction method for penetrating through an underground karst cave, relates to the technical field of earth surface directional drilling construction, and aims to solve the problems that hole collapse and slurry leakage are easily caused and treatment is not economical when drilling holes in a karst area penetrate through the karst cave. The technical scheme comprises: detecting karst cave distribution; designing a step-by-step casing sequence containing a risk response section and a final hole construction section; and dynamically selecting a casing isolation or local reinforcement process for treatment according to the filling state, the scale and the property of the karst cave in the drill hole until a final hole is formed. According to the method, safe, economical and efficient karst cave stratum drilling construction is achieved.