1551 results about "Crushed stone" patented technology

The invention provides a finite element-based method for estimating pulling-out ultimate bearing capacity of a grouting screw anchor in gravelly soil, and relates to the technical field of civil structure engineering.A three-dimensional finite element model containing the grouting screw anchor and surrounding gravelly soil is established, model parameters cover the structure and material characteristics of the grouting screw anchor, and the grouting screw anchor and the surrounding gravelly soil are subjected to finite element modeling; a coordinate axis is established with the center of the anchor bottom as an original point for grid division, a stress concentration area is analyzed, principal stress is calculated to serve as critical bearing stress, vertical pull-out loads are applied step by step through a grouting pull-out test, a pull-out stress influence area is determined, soil stress of the area is analyzed, and soil binding power and friction force are calculated. And a grouting coefficient and a rock crack coefficient are generated, soil parameters are corrected, and the ultimate pulling bearing capacity of the grouting screw anchor is comprehensively obtained. According to the method, the pulling ultimate bearing capacity of the grouting screw anchor is accurately evaluated by establishing the three-dimensional finite element model and the graded loading experiment.

The invention discloses lithotripsy equipment and a control method thereof. The lithotripsy equipment comprises a lithotripsy device, an optical tracking device, a display and control device and an ultrasonic imaging device, the lithotripsy device comprises a mechanical arm module, a shock wave module and a control module; the mechanical arm module and the shock wave module are both electrically connected with the control module, and the control module and the optical tracking device are both electrically connected with the display and control device. The ultrasonic imaging device comprises a handheld ultrasonic probe; the handheld ultrasonic probe is in communication connection with the display and control device; the mechanical arm module comprises a mechanical arm, the shock wave module comprises a shock wave generator, and the shock wave generator is arranged at the front end of the mechanical arm; and a plurality of optical reflection markers are arranged on the backs of the handheld ultrasonic probe and the shock wave generator. According to the lithotripsy equipment provided by the embodiment of the invention, the intelligent degree of the extracorporeal shock wave lithotripsy machine is improved, the extracorporeal shock wave lithotripsy treatment process is simplified, and the treatment positioning precision is improved.

To provide a deep well filtering structure that effectively prevents the subsidence and collapse of the well wall. [Solution] The deep well filtration structure of this invention includes a surface loess layer 1 and a well channel 7, with a concrete well side 8 poured onto the surface of the surface loess layer, a reinforced concrete permeable pipe and a reinforced concrete solid pipe 10 installed in sequence inside the well channel, a well pipe pallet 6 placed at the bottom end of the well channel, and below the surface loess layer, in sequence, a gravel-mixed loess layer 2, a gravel layer 3, a crushed stone-mixed loess layer 4 and an underground loess layer 5, and a clay ball-filled sealing layer 9 filled between the surface loess layer, the gravel-mixed loess layer and the reinforced concrete solid pipe.

The invention provides a surrounding rock back break monitoring and early warning system for a curved tunnel, which relates to the technical field of curved tunnel excavation monitoring and comprises an acquisition module, a tunnel model construction module, a back break analysis module and an evaluation module, the collecting module is used for obtaining the position of a pre-buried blasting point of each area, the preset blasting strength and tunnel inner wall surrounding rock damage data in the blasting excavation process, and the tunnel model building module is used for building a bent tunnel blasting AI analysis model. A blasting impact strength data set, a blasting gravel impact strength data set and a surrounding rock surface strength data set are established, and the over-excavation and under-excavation analysis module is used for constructing a blasting impact influence coefficient Cb, i, a blasting secondary impact influence coefficient Cimpact, i and a surrounding rock surface strength excavation influence coefficient Kh, i of the ith area. According to the system, the collision of the inner wall of the curved tunnel is detected and analyzed twice, the over-excavation and under-excavation conditions are further detected and evaluated, and a corresponding strategy is generated.

This invention relates to a construction method for driving piles using a vibratory driven pile unit. The original walking pile frame is replaced with a crawler crane. Utilizing the flexible movement of the crawler crane, the machine can move immediately after driving one pile to drive the next. At this time, crushed stone can be added to the previous pile, and then the pile can be extracted. This back-and-forth operation greatly improves construction efficiency. The crawler crane is equipped with an adjustment frame, which is fixed at the bottom by a bottom-fixing cylinder. The mast adjusts the upper position of the pile frame, and the adjustment frame adjusts the lower position of the pile frame, ensuring the verticality of the crushed stone piles during driving and extraction. During use, the mast adjusts the position of the pile frame, and the vibratory lifting mechanism drives the hoisting rope to move the vibratory hammer up and down through the slide frame for driving or extracting piles.

The invention relates to the technical field of macadam paving, in particular to equipment and a method for quickly paving macadam on a polyurethane pavement, a discharge port is formed in the lower end of a distribution bin, a gap-adjustable baffle is arranged on the outer side of the discharge port, and a rotating roller rotationally mounted through a bearing is arranged at the lower end of a lower end port of the discharge port; the device has the beneficial effects that by arranging the packing auger with the rotary stirring function, full mixing and stirring of gravel raw materials are achieved, meanwhile, the purpose of adjusting the angle of the baffle is achieved through adjustment of a pneumatic telescopic rod and rotary installation of the baffle, the device is simple in structure, the practicability is high, and the device is suitable for popularization and application. Meanwhile, the purpose of cleaning the gap groove is achieved through the rotating roller which continuously rotates, broken stones are prevented from being clamped in the gap, and the laying quality and the laying thickness uniformity are improved.

The invention relates to the technical field of concrete construction, in particular to a green low-carbon concrete construction operation device which comprises a vehicle body, a stirring tank is fixedly mounted on one side of the upper end of the vehicle body, a feeding cylinder is fixedly mounted on one side of the upper end of the stirring tank, and a feeding hopper is fixedly mounted at the upper end of the feeding cylinder. A first motor is started to drive a crushing roller and a rotating roller to rotate, the crushing roller crushes stones, the crushed stones fall at the upper end of an inclined plate, the rotating roller evenly throws the crushed stones to the upper end of a sieve plate, the stones are filtered, and the matched stone fragments fall into a stirring tank and are mixed with additives such as cement and sand to form concrete. Then a valve on the discharging pipe is opened, the vehicle body is pulled towards the concrete outlet side, the pressing cylinder rotates while moving up and down on the concrete, the surface of the concrete is vibrated to be flat, the concrete surface is leveled through the patter and the leveling plate, secondary leveling of workers is not needed, the labor intensity is reduced, and the efficiency is improved.

The application provides an underwater broken stone base leveling device and a leveling method thereof, which comprises a ship body, the bottom of the ship body is provided with a leveling device, the leveling device comprises an outer frame, outer support leg oil cylinders are arranged at four corners of the outer frame, a sliding leveling mechanism is arranged on the outer frame, inner support leg oil cylinders are arranged at four corners of the leveling mechanism, and an elevation adjusting oil cylinder is arranged at the top of the leveling mechanism. The leveling device is automatically adjusted to be in a horizontal state, then the height of the outer frame is measured, the leveling head is automatically adjusted to a required height according to a set leveling thickness, the movement of the propelling oil cylinder is controlled, the leveling head is leveled at one station of the frame of the support, the walking type advancement of the leveling robot is realized through the interactive support of the four outer support leg oil cylinders and the four inner support leg oil cylinders, the overall device utilizes the fusion and coordination of multiple sensors, the automatic leveling of the underwater broken stone outer frame can be realized, the overall device is automatically leveled, and the problems that the traditional method is difficult to adapt to deep water and has low construction efficiency are overcome.

The utility model relates to the field of vibro-replacement gravel piles, and discloses a vibro-replacement gravel pile perpendicularity control auxiliary device which comprises an auxiliary main supporting frame, a circular through hole is formed in the top face of the auxiliary main supporting frame, and a vibro-replacement gravel pile body is arranged in the circular through hole. An auxiliary control mechanism used for limiting the vibration stone breaking pile body is arranged in the circular through hole, the auxiliary control mechanism comprises push plates, hydraulic telescopic cylinders, springs, limiting clamping plates, laser displacement sensors and a control box body, the multiple push plates are arranged in the circular through hole, the hydraulic telescopic cylinders push the push plates to move, and the hydraulic telescopic cylinders push the limiting clamping plates to move. According to the device, the vibro-replacement gravel pile body can be efficiently clamped and limited, the perpendicularity of the vibro-replacement gravel pile body can be maintained, when the vibro-replacement gravel pile body deviates, correction can be conducted in time by means of the multiple hydraulic telescopic cylinders, and the construction quality and the engineering stability are improved.

The invention discloses an energy-saving stone transportation device for a gabion, and belongs to the technical field of stone transportation, the energy-saving stone transportation device for the gabion comprises a conveying mechanism used for conveying stones, and the conveying mechanism is provided with a screening mechanism used for removing small-particle-size stones and a gabion loading mechanism used for loading the stones into the gabion; through the screening mechanism composed of the shaking hopper, the eccentric plate and the spring, broken stones and dust which do not meet the particle size requirement can be automatically screened out, it is guaranteed that the sizes of stones entering the gabion are uniform, and the structural stability and the protection effect of the gabion are improved; according to the conveying mechanism, the conveying belt is driven to operate under the assistance of the gravity of stones, and the motor load is reduced; according to the gabion loading mechanism, the function of alternately loading two gabion gabions is achieved through the design of a switching electric cylinder and double discharge ports, stone conveying can still be kept uninterrupted when empty gabions are replaced, the shutdown waiting time is greatly shortened, and the overall operation efficiency is improved.

The invention discloses a gravel pile composite foundation reinforcement effect evaluation method based on dynamic sounding. The method comprises the steps that a target area is selected; the dynamic penetration hammering number N, the dynamic penetration resistance F and the composite foundation bearing capacity data are obtained; the unconfined compressive strength Cu of soil between piles and the friction angle delta p in the piles are obtained; on the basis of the unconfined compressive strength Cu of the soil between the piles and the friction angle delta p in the pile body, the theoretical ultimate bearing capacity fef of the gravel pile is obtained; and based on the ultimate bearing capacity fef of the gravel pile theory, the bearing capacity fsp, d of the composite foundation is obtained. The method can establish an empirical relationship between the dynamic penetration hammering number or the dynamic penetration resistance and the bearing capacity of the composite foundation on a semi-infinite foundation, is used for evaluating the bearing capacity of the composite foundation, solves the problem of insufficient number of existing load plate tests, can be used for reinforcing effect evaluation and bearing capacity estimation of the gravel pile composite foundation, and also can be used for evaluating the bearing capacity of the composite foundation. And the method can also be widely applied to reinforcing effect evaluation and bearing capacity estimation of discrete material pile composite foundations such as sand piles.

The invention discloses a broken stone sorting device for mine mining, and relates to the technical field of mine mining, the broken stone sorting device comprises a vibration screening machine main body, a placing cavity, a discharging groove, a fixing shaft and a fixing roller, the placing cavity is formed in the vibration screening machine main body, and the discharging groove is formed in one side of the vibration screening machine main body; the distances between the fixing shafts are changed through deformation of the connecting rod assemblies, broken stones can be sorted by adjusting the gaps between the fixing rollers, so that the broken stones are convenient to sort, the gaps between the fixing rollers can be synchronously changed, the positions of the fixing shafts do not need to be independently changed, and the working efficiency is improved. According to the gravel sorting device, it can be guaranteed that the positions of the fixing shafts and the first partition plates are aligned, the situation that the positions of the first partition plates are independently adjusted can be avoided, a second connecting strip and a third connecting sleeve can knock an iron sheet plate, and therefore sorted gravel can be rapidly discharged from the iron sheet plate, discharging of the gravel from a containing cavity is accelerated, and the gravel sorting efficiency is improved.

The utility model discloses a template for retaining wall graded broken stone inverted filter construction, which comprises a template body and a rib plate arranged on one side of the end face of the template body, and the rib plate is provided with a reference part with the width consistent with the thickness of an inverted filter to be constructed. The thickness consistency of the inverted filter layer can be guaranteed, the construction quality is guaranteed, the construction difficulty is reduced, the construction efficiency is improved, resource waste is reduced, and the construction cost is controlled.

The invention discloses a multi-stage gradient reinforced composite filler for a high-filling embankment and a construction process of the multi-stage gradient reinforced composite filler, and belongs to the technical field of embankment fillers, and in the multi-stage gradient reinforced composite filler, the overall structure stability is remarkably improved through layered material combination. The self-locking structure of the three-level aggregate enhances the non-deformability of the filler, the large-particle-size broken stones form skeleton support, the modified fly ash fills pores to improve the compactness, and the machine-made sand surface treatment technology enhances the cohesive force among particles. The cementitious material realizes synergistic development of early strength and later strength, rapid hardening of the sulphoaluminate cement and continuous hydration of the superfine slag powder cooperate with each other, and the microstructure is optimized in cooperation with the nano material. The gradient reinforcement system exerts characteristics of different materials in a layered mode, the deep steel-plastic belt anchors the foundation to prevent slippage, the middle-layer fiber grid disperses stress, the surface-layer non-woven fabric inhibits shallow-layer cracking, three-dimensional protection from inside to outside is formed, microcracks are continuously repaired through the microbial agent, shrinkage deformation is compensated through the expanding agent, and the long-term service performance is comprehensively guaranteed.

The invention relates to the field of tunnel blasting quality monitoring, and discloses an SAM model-based tunnel blasting gravel morphology automatic identification and analysis system and method, and the system comprises an image collection unit, an intelligent triggering unit, an auxiliary illumination unit and a central processing and control unit which are installed at the top of a tunnel. The method comprises the steps of detecting a transport vehicle in real time through a laser distance sensor serving as an intelligent triggering unit, and judging whether the vehicle is in a full-load broken stone state or not according to a distance threshold value; after confirmation, the camera and the light source are automatically triggered to complete image acquisition; the central processing and control unit calls a pre-trained SAM visual model to carry out panoramic instance segmentation on the collected images, an effective broken stone mask is extracted through a multi-stage post-processing algorithm, the equivalent physical diameter of each broken stone is calculated, and finally statistical analysis is carried out and a report is generated. According to the method, unattended operation and intelligentization of blasting rock particle size analysis are achieved, a model does not need to be trained for specific working conditions, and the analysis result is objective and accurate.

The invention relates to the field of ocean pile foundation maintenance, and discloses a construction method for reinforcing a soil body around a pile based on microbial capsules and a reinforcing structure. The construction method comprises the following steps: culturing urease-producing bacteria; the method comprises the following steps: mixing a first water-soluble capsule for encapsulating cementing powder, a second water-soluble capsule for encapsulating bacterial sludge and graded broken stone and grit to form a mixture; and the mixture is placed in an expected reinforcement area around the pile. Bacterial sludge and cementation powder are packaged through two kinds of capsules respectively and mixed with graded broken stone, then the mixture is put around a pile, the capsules are supplemented regularly, and microorganism-induced mineralization reinforcement is achieved. According to the reinforcement method combining the microbial capsules with the gravel, the anti-scouring capacity of the soil around the pile can be effectively enhanced through the calcium carbonate deposition reaction generated by microorganisms, and compared with a traditional physical protection and chemical reinforcement method, better environmental adaptability and sustainability are achieved; and salt erosion and pollution of a traditional chemical grouting material are avoided.

The utility model discloses a modular horizontal subsurface flow wetland structure, and belongs to the field of municipal drainage. The modular horizontal subsurface flow wetland structure comprises an integrated wetland, the integrated wetland is composed of a first gravel area, wetland plants, a second gravel area, medium-coarse sand and broken stones, the first gravel area is located on one side of the broken stones, the second gravel area is located on the other side of the broken stones, and the wetland plants are located at the upper ends of the broken stones. The utility model solves the problems that the existing traditional method can not adjust and switch between an aerobic mode and an anaerobic mode when treating wastewater, and the whole structure can not adjust the flow track of sewage by responding to the switching of the modes, and after the flow track of liquid is adjusted through the first manual gate valve, the flow track of the liquid can be adjusted through the adjustment of the electronic valve. Sewage flows into the first gravel area at different positions, and is discharged from the position of the second water pipe in the second gravel area after being in contact with gravel.

The utility model discloses a light overhead roadbed structure which comprises an upper main body structure, the upper main body structure is in a segment type, an expansion joint is arranged between the adjacent upper main body structures in the line direction, the lower end of the upper main body structure is provided with a joist structure connected with the upper main body structure, and the joist structure is supported by a pile structure. And thick broken stone hardcore layers in contact with the upper main body structure are further paved between the beam structures. The middle of the overhead roadbed structure is hollow, the overhead roadbed structure has the advantages of being small in filler amount, light in weight, small in soil body additional stress and capable of remarkably reducing post-construction settlement caused by the additional stress. The overhead roadbed structure is small in structural size in the cross section direction, has the advantage of being small in occupied area, and can save land. The overhead roadbed structure adopts a foundation form of the joists and the cast-in-situ bored piles, has the characteristics of high stability and strong lateral deformation resistance, and is safe and reliable in structure.

The invention relates to anti-crack expansive concrete and a preparation method thereof, and relates to the technical field of building materials. The concrete is prepared from the following components in parts by mass: Portland cement, fly ash, slag powder, silica fume, an expansion composition, nano calcium carbonate, sand, gravel, water, a hydration temperature rise inhibitor, a polycarboxylic acid water reducer and carboxyl modified polypropylene fibers. The preparation method comprises the steps of primary mixing and final mixing. According to the anti-crack expansive concrete disclosed by the invention, the hydration temperature rise inhibitor is added to reduce hydration heat, meanwhile, the early-stage and short-term strength is improved, and the early-stage and short-term strength loss caused by temperature cracks generated by reduction of the hydration heat is avoided.

The invention provides a high-filling slope ecological protection construction method, and relates to the technical field of slope protection engineering. The construction method comprises the following implementation steps: step 1, slope pretreatment; the method comprises the following steps: firstly, shaping and trimming a high-filled side slope, cleaning surface topsoil, gravels and weeds, and synchronously presetting a through-type drainage system at the top, the waist and the toe of the side slope; comprising the four steps of anchor rod laying, grouting and anchoring, lattice beam pouring and geogrid laying, specifically, drilling is conducted on the trimmed slope surface of the side slope, anchor rods are laid, lattice beams fixedly connected with the anchor rods are formed through pouring, then the geogrids are flatly laid in the coverage area of the lattice beams, and double fixing is completed. The anti-sliding stability of the slope body is enhanced, the geogrids can disperse the load of the slope body, the shear strength of the surface soil body of the slope is improved, the overall stability of the high-filled slope is remarkably improved, and geological disasters such as landslide and collapse of the slope are effectively prevented.

The whole reservoir anti-seepage reservoir of the pumped storage power station comprises a seepage control structure, a drainage collection system and a seepage monitoring system, the seepage control structure comprises a reservoir bottom seepage control structure and a reservoir bank seepage control structure, and the reservoir bottom seepage control structure comprises a geomembrane, a broken stone hardcore, a reservoir bottom transition layer, a geotechnical mat and geotechnical cloth; the reservoir bank seepage control structure comprises a geomembrane, a reservoir bank cushion layer, high-strength woven geotechnical cloth and a wave wall. On the basis of the characteristics of deformation and the like of different areas of the reservoir basin, adaptive seepage control types are designed and combined to form a complete full-reservoir-basin seepage control structure, seepage pressure value information of monitoring points is collected in real time through the seepage monitoring system, and the seepage pressure value information of the monitoring points is acquired in real time. And a leakage point position judgment method is provided to determine a local leakage point area.

The invention relates to the field of buildings, and particularly discloses a roadbed structure based on a slag-gypsum-based cementing material and a construction process of the roadbed structure. A roadbed structure based on a slag-gypsum-based cementing material is characterized by comprising the following raw materials in parts by weight: 60-70 parts of slag, 85-100 parts of industrial byproduct gypsum, 10-20 parts of cement, 40-50 parts of water, 5-7 parts of a composite alkali activator, 2-3 parts of calcium sulphoaluminate, 7-10 parts of organic silicon resin modified steel fibers, 3-4 parts of a water reducer and 250-300 parts of gravel. The organic silicon resin modified steel fiber comprises the following raw materials: hydrogen-containing organic silicon resin, polyborosiloxane and steel fiber in a mass ratio of 32: 1.6: (40-50). The slag-gypsum-based cementing material disclosed by the invention has the advantages that the crushing resistance is high, and the crack resistance of a cured roadbed structure is good.

The invention discloses a method for determining the pile spacing of ultra-deep vibro-replacement gravel piles based on the pile-soil volume replacement rate, which comprises the following steps: before vibro-replacement gravel pile construction, selecting a plurality of representative construction sites in a construction area as ultra-deep vibro-replacement gravel pile construction pile spacing test sites; in each test site, taking a square, and constructing gravel piles for foundation reinforcement at four vertexes of the square to form four gravel piles distributed in a square shape; according to the square area of each test site and the depths of the four gravel piles, the pile-soil volume replacement rate of each test site is calculated; the pile-soil volume replacement rate obtained through calculation of each test site is compared with a pre-designed replacement rate, and the optimal pile-soil volume replacement rate is obtained; and according to the optimal pile-soil volume replacement rate, the pile spacing of the ultra-deep vibro-replacement gravel piles in the construction area is determined, so that the gravel piles are planned and constructed in the construction area according to the determined pile spacing.

The invention discloses high-durability pavement concrete suitable for a plateau environment and a preparation method of the high-durability pavement concrete. Each cubic meter of the concrete comprises the following raw materials: 350-380 kg / m < 3 > of cement, 610-650 kg / m < 3 > of sand, 1250-1300 kg / m < 3 > of gravel, 0.35-0.38 kg / m < 3 > of a plateau air entraining agent, 1.75-1.9 kg / m < 3 > of a water reducing agent, 0.35-0.76 kg / m < 3 > of an internal curing agent, 3.5-3.8 kg / m < 3 > of nano silicon dioxide, 0.35-0.76 kg / m < 3 > of modified mesoporous silicon dioxide and the balance of water, and the water-binder ratio is less than or equal to 0.4. The 28d strength of the concrete is greater than 40MPa, and the pore spacing factor is less than 250 microns. And compared with concrete prepared under the same condition, the durability of the pavement concrete in the plateau area is greatly improved.

The invention provides a drainage channel structure of a geological disaster control project and a construction method of the drainage channel structure, and relates to the technical field of drainage channels. The drainage channel structure of the geological disaster control project comprises an excavated U-shaped drainage channel body, a channel body supporting structure is arranged in the drainage channel body, and the channel body supporting structure comprises a first supporting layer and a second supporting layer arranged on the inner side of the first supporting layer; the first supporting layer comprises U-shaped supporting walls and a U-shaped concrete platform which are matched with the U-shaped drainage channel body, the U-shaped supporting walls are embedded in supporting wall setting cavities so as to form the first supporting layer with the U-shaped concrete platform, and the U-shaped supporting walls are formed by filling stone cages with broken stones; the second supporting layer is a concrete layer, and waterproof geotechnical cloth is arranged between the second supporting layer and the first supporting layer. The concrete layer of the second layer is not prone to cracking or damage, the canal body supporting structure is more stable, and the service life is longer.

The invention discloses a seabed immersed tube tunnel reinforcing device, a construction method and a resetting method, and belongs to the technical field of tunnels. A seabed immersed tube tunnel reinforcing device comprises a tunnel body installed on a seabed foundation, a plurality of composite pile pieces are arranged in the seabed foundation, a broken stone hardcore connected with the composite pile pieces is installed on the surface of the seabed foundation, and a bag base layer is arranged on the upper surface of the broken stone hardcore. A bag adjusting layer connected with the tunnel body is mounted on the upper surface of the bag base layer; in an operation period and a post-earthquake observation period, attitude data of the tunnel body can be obtained in real time by utilizing a dynamic monitoring and adjusting mechanism constructed by the bag adjusting layer, the grouting device and the detection system, and once it is monitored that the attitude of the tunnel body deviates, the grouting device can be allocated in time, and according to data fed back by the detection system, the attitude of the tunnel body can be accurately detected. And grouting operation is rapidly conducted on the bag adjusting layer, and posture adjustment can be conducted on the specific portion of the tunnel body in a targeted mode by controlling the grouting pressure and the grouting amount.

The invention provides a method for controlling the surrounding rock stability of a weathered and expanded soft rock roadway, and belongs to the technical field of underground mine roadway surrounding rock control. The method comprises the following steps: spraying a macromolecular waterproof material on the whole section of the surrounding rock surface of the roadway to form a water-resisting layer to prevent water vapor from infiltrating into the surrounding rock; a graded supporting structure is arranged in a roadway, and an active supporting layer with shallow anchor rod reinforcement and deep anchor cable suspension cooperating with each other is formed; spraying steel fiber reinforced concrete on the surface of the active support layer of the roadway to form a passive support layer coupled with the active support layer; the bottom face of the roadway is excavated into an arch wave face, a plane corresponding to the arch wave face is an arch plate face, an anti-arch space is defined by the arch wave face and the arch plate face, gravel concrete is poured into the anti-arch space, and an anti-arch structure is formed at the bottom of the roadway. The method can effectively control deformation and instability of the surrounding rock, solves the problems of waterproof failure, support system mismatch and floor heave out-of-control of the easily-weathered expansion soft rock roadway, and realizes long-term safety and stability of the easily-weathered expansion soft rock roadway.

The invention discloses a pile forming form and inter-pile soil compactness evaluation method based on vibro-replacement gravel pile construction data. The method comprises the steps of finding a pseudo-residual vibration working section according to a real-time construction depth-time curve, determining a key stage according to a real-time construction filling amount-time curve, finally finding a time node of downward insertion / upward pulling of a gravel pile by a vibroflot according to an amplitude change rule of a real-time construction current-time curve, calculating a transverse extrusion and expansion range after reinforcement, and finally determining a reinforcement result. And the pile forming form is estimated, and the average compactness of the soil between the piles of the reinforced field is calculated. According to the method, evaluation of the pile forming form and the compactness of the soil between the piles is achieved through on-site construction data, and the method has the advantages of being high in evaluation speed, high in accuracy and the like and is suitable for reinforcing effect evaluation of the vibro-replacement gravel pile treatment foundation with the down-inserting and up-pulling construction technology.

The invention discloses a lithotomy and lithotripsy handle and a lithotomy and lithotripsy integrated medical instrument, and belongs to the technical field of medical instruments, the lithotomy and lithotripsy handle comprises an operation part and a guide sheath tube capable of collecting a mesh basket, the guide sheath tube is installed on the operation part, the operation part is provided with an operation device, and the operation device at least has a lithotomy mode and a lithotripsy mode; the lithotomy and lithotripsy integrated medical instrument comprises a mesh basket and a lithotomy and lithotripsy handle. In the calculus removing mode, the operation device can convert external force applied by an operator into driving force for driving the mesh basket to move in the axial direction of the guiding sheath tube, and the mesh basket is driven to be released or recycled through the guiding sheath tube so that calculus removing can be achieved. In the lithotripsy mode, the operation device can convert external force applied by an operator into lithotripsy force for driving the mesh basket to be collected to the guiding sheath tube in the axial direction, so that the mesh basket collects the lithotripsy under the constraining force of the guiding sheath tube. The lithotripter has the advantages that lithotripsy can be carried out during lithotripsy in the bile duct and during lithotripsy, a lithotripsy handle does not need to be externally connected independently, economic cost is low, operation is easy, and the risk of cross infection is avoided.

The utility model relates to the technical field of geological exploration, and discloses a drilling device for geological exploration, which comprises a working frame, the four connecting plates are fixedly connected to the four side surfaces of the working frame; the four fixing nails penetrate through the top faces of the four connecting plates in a sliding mode and extend to the positions below the four connecting plates, and a protection assembly is arranged on the inner side of the working frame. A drilling assembly is arranged in the protection assembly, the protection assembly comprises a protection frame, a sliding groove is formed in the top face of the working frame in a penetrating mode, and the bottom end face of the protection frame slidably penetrates through the top face of the working frame and extends into the sliding groove. Through the protection assembly, a first electric push rod is used for driving a supporting plate to ascend and descend, so that a protection frame slides in a sliding groove, the protection frame and a working frame block splashing substances such as broken stones drilled by a drill rod, the situation that surrounding workers are injured due to splashing of chippings is avoided, and potential safety hazards are reduced; and the safety of the device during drilling in geological exploration is improved.