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78results about How to "Does not affect normal construction" patented technology
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In-hole jet-suction cuttings removing and reaming method for horizontal directional drilling
ActiveCN103527092ASimple construction operationImprove chip removal efficiencyFlushingDrilling machines and methodsReamerDrill hole
The invention relates to an in-hole jet-suction cuttings removing and reaming method for horizontal directional drilling. The in-hole jet-suction cuttings removing and reaming method includes that after completing drilling of a guide hole, a jet-suction type reamer is connected onto a drill pipe on an unearthed side, a drill pipe or pipeline is connected onto the rear of the reamer, a slurry pump or an air compressor is started up during reaming, and high-pressure fluid is delivered from the a high-pressure rubber hose, a drilling machine and the drill to the inner side of the reamer; the high-pressure fluid is jetted out from a jet flow nozzle at a high speed, negative pressure is generated in a suction chamber, and slurry fluid containing drilling cuttings on the periphery of the reamer is sucked into the suction chamber through suction inlets and blended with the high-pressure fluid jetted out from the nozzle in a throat and expansion section prior to being discharged into an earth surface sedimentation tank through the drilling pipe or the pipeline at the rear of the reamer and flowing back to a drilling hole after purification and blending; the reamer comes out from an earth-digging side to complete primary reaming, and if the drilled hole needs to be further enlarged, then a larger reamer is selected to perform repeated reaming till the hole diameter acquirement is met. By the method, drilling cuttings conveyance speed is dozens of times even a hundred times that of a conventional mode, so that cuttings can be removed thoroughly, and cuttings removal efficiency is high.
Owner:陕西中科非开挖技术股份有限公司
Portable resistivity method advanced forecasting system and method applicable to TBM
ActiveCN105334541AReduce volumeShort completion timeElectric/magnetic detection for well-loggingWater resource assessmentElectricityFracture zone
The invention relates to a portable resistivity method advanced forecasting system applicable to a TBM. The system comprises a plurality of non-polarized electrodes, a terminal control box and an electrode cable series. The non-polarized electrodes are electrically connected with the terminal control box. The terminal control box is electrically connected with the electrode cable series. The non-polarized electrodes are arranged to be capable of stretching out of a TBM cutterhead hob hole and making contact with a tunnel face to detect front geological signals. The terminal control box receives the signals collected by the non-polarized electrodes and predicts a front geologic body. The potential difference between a surrounding rock mass, a shield and the terminal control box is reduced and / or eliminated through electrode cables. According to the system, detection of unfavorable geologic bodies such as a fault fracture zone, a soft and hard layered stratum, a water-bearing cave and an underground river is achieved according to geologic body resistivity difference.
Owner:山东百廿慧通工程科技有限公司
Foundation pit top horizontal displacement monitoring method
ActiveCN104631419ADoes not affect normal constructionHigh measurement accuracyExcavationsIn situ soil foundationStructural engineeringEngineering
The invention discloses a foundation pit top horizontal displacement monitoring method which comprises a longitudinal foundation pit edge monitoring point monitoring link and a transverse foundation pit edge monitoring point monitoring link. The longitudinal foundation pit edge monitoring point monitoring link includes the following steps that 1, firstly a foundation pit corner portion point B1 is selected to serve as a static benchmark point, monitoring points are set on two longitudinal edges of a foundation pit respectively, the monitoring points before excavation are Bi and C i+1 (i=1, 2,......n) respectively, the corresponding monitoring points after excavation become B' i and C' i+1 respectively; 2, before excavation is conducted on the foundation pit, the distance between B i and B i+1 is monitored to be B i * B i+1, and the distance between the B i+1 and the C i+1 is monitored to be B i+1* C i+1; 3, after excavation is conducted on the foundation pit, the distance between the B' i and the C' i+1 is monitored to be B' i *C' i+1, and the distance between the B' i+1 and C' i+1 is monitored to be B' i+1 * C' i+1; 4, the horizontal displacement of the monitoring point Bi and the horizontal displacement of the monitoring point C i are obtained according to the value of the B i * B i+1, the B i+1* C i+1, the B' i *C' i+1 and the B' i+1 * C' i+1. The horizontal displacement monitoring method is high in measuring accuracy and low in requirement for professional skills of monitoring personnel, and monitoring can be finished conveniently just by operation of a single person.
Owner:SHAOXING UNIVERSITY +1
Excavation and support method of large cross-section tunnel through fault fracture zone
ActiveCN108843332AThe method steps are simpleReasonable designUnderground chambersTunnel liningSupporting systemFracture zone
The invention discloses an excavation and support method of large cross-section tunnel through fault fracture zone. The initial support structure of tunnel comprises a whole cross-section support system and the lattice girder and shotcrete support structure of the tunnel. A temporary support structure of middle-partition wall is arranged between a left pilot tunnel and a right pilot tunnel. The actual construction includes the steps: 1, excavation of the upper tunnel body; 2, the judgment of the initial support deformation of the tunnel arch wall and the construction of the replacement arch; 3, excavation of the lower tunnel body. The excavation and support method of large cross-section tunnel through the fault fracture zone has reasonable design, simple construction, and good use effect.Only the upper half section of the tunnel is excavated by the center diaphragm method, and the excavation cross-section is reduced so that the stability of the arch roof is ensured. The whole cross-section support system and the temporary support structure of middle-partition wall are supported by the underpass beam and joined together to form a stable monolithic support system, which can avoid the sinking of the supporting arch and ensure the stability of the initial support effectively. Besides, the construction of replacement arch is conducted on only half cross-section of the tunnel and the cost can be saved, and the construction safety can be ensured.
Owner:CHINA RAILWAY 20 BUREAU GRP
Construction method for shield tunneling machine retaining structure taking position firstly and being constructed secondly and for shield shaft excavation
ActiveCN103266896AFlexible arrangement of construction periodDoes not affect normal constructionUnderground chambersTunnel liningStructure of the EarthStructural engineering
The invention discloses a construction method for a shield tunneling machine retaining structure taking a position firstly and being constructed secondly and for shield shaft excavation. The construction method comprises the following steps that step one, a shield tunneling machine takes the position in an arranged position of the retaining structure, and a tunnel face is sealed; step two, the retaining structure is constructed, and a plurality of shielding short piles are arranged; step three, outward radial grouting reinforcement is carried out on duct piece semi-ring soil mass on the position of a duct piece; step four, a temporary support is additionally arranged in a ring duct piece on the tail portion of a tunnel shield; step five, a shield shaft foundation pit is excavated in the retaining structure to a standard section pit bottom, and in the process of foundation pit excavation, soil mass inclined deep hole grouting reinforcement is carried out on the external of an upper ring on the tunnel duct piece outside each shielding short pile in the foundation pit, and anchor cables are arranged outwards on the inner side wall of the retaining structure. The construction method for the shield tunneling machine retaining structure taking the position firstly and being constructed secondly and for the shield shaft excavation can flexibly arrange a station construction period, and a shield section construction period is not limited by station structure construction.
Owner:SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
Measuring device and measuring method for layering horizontal displacement of base pit enclosing structure
The invention provides a measuring device and a measuring method for layering horizontal displacement of a base pit enclosing structure. The measuring device comprises a relative displacement measuring device and an absolute displacement measuring device; the relative displacement device comprises a first wire-fixing device fixedly mounted on the side face of a first enclosing structure, a first laser distance measuring sensor mounted on the first wire-fixing device, and a displacement refractive sheet mounted on a second enclosing structure; the absolute displacement measuring device comprises a second wire-fixing device mounted on the top face of the first enclosing structure, a second laser distance measuring sensor mounted on the second wire-fixing device and a reference refractive sheet outside a base pit; the first and second wire-fixing devices comprise a base ball socket internally provided with a ball socket, and a ball head rotor in spherical match with the ball socket respectively; the ball head rotors are fixedly connected with the first and second laser distance measuring sensors; and locking devices are arranged between the ball socket and the ball head rotors. The measuring device is simple in structure, is simple and fast in measuring process and is high in measuring precision.
Owner:TONGJI UNIV +1
Novel tunnel non-contact deformation monitoring method
ActiveCN104061871AReduce human resource consumptionAvoid data loss and damageUsing optical meansCable transmissionMonitoring data
The invention discloses a tunnel rock soil deformation monitoring method, and particularly discloses a novel tunnel non-contact deformation monitoring method. A thickness R0 value of a plastic area is calculated. A sensor installing hole is drilled in a surrounding rock. One anchoring end is arranged at the tail end of an optical fiber single point displacement sensor. The anchoring end penetrates from the installing hole through the plastic area to be buried in an elastic area and fixed. The optical fiber single point displacement sensor is arranged in the plastic area. The top end, i.e. a flexible point, of a telescoping probe of the sensor is fixed on a tunnel excavation interface and used for measuring data. Deformation of the plastic area is calculated according to the value measured by the optical fiber single point displacement sensor. The monitoring data are transmitted to a tunnel port via optical fibers. During the process, consumption of manpower resource is low, the monitoring data are not manually influenced, loss and damage of the data in cable transmission can be effectively avoided, and an objective of automatic real-time monitoring can be realized via arrangement of the sensor device.
Owner:重庆市建筑科学研究院有限公司
Plane sensor used for detecting strain between asphalt road surfaces
InactiveCN102095364AHigh sensitivityStrong anti-noise abilityElectrical/magnetic solid deformation measurementTemperature resistanceElastic modulus
The invention discloses a plane sensor used for detecting strain between asphalt road surfaces, comprising an elastic element, a sensitive element, a hemispheric protective sleeve, a waterproof adhesive layer and a fixing element, wherein the elastic element is made of a material with similar elastic modulus and asphalt concrete modulus and is subjected to harmonious deformation together with an asphalt mixture; the sensitive element is installed in the middle of the elastic element and can detect the dynamic strain between the asphalt road surfaces; the waterproof adhesive layer is compactly filled in the hemispheric protective sleeve; the fixing element guarantees the harmonious deformation of the elastic element and the detected road surface asphalt mixture and prevents the direction of the elastic element from changing during the detection process; and the sensitive element is a strain rosette composed of three strain gages for detecting the dynamic strains of vehicle driving direction, direction vertical to the vehicle driving direction, and direction having an included angle of 45 degrees respectively with the two directions in real time. The plane sensor has the advantages of simple structure, small volume, low cost, high temperature resistance and high detection sensitivity, and can be used for solving the practical problem that the complex strained condition of strain between asphalt road surfaces can not be accurately and reliably detected in the prior art.
Owner:CHANGAN UNIV
Active field nuclear magnetic resonance detection device and detection method
ActiveCN107966737AAvoid loweringIncreased macroscopic magnetizationDetection using electron/nuclear magnetic resonanceNMR - Nuclear magnetic resonanceSignal-to-noise ratio (imaging)
The invention relates to an active field nuclear magnetic resonance detection device and detection method. The device comprises a pre-polarized control circuit used for controlling a transmitting coilthrough a switching switch for generating the pre-polarized magnetic field larger than the natural earth magnetic field, a release circuit which is connected with the transmitting coil through a switch and is used for quickly shutting off remaining energy of a circuit release transmitting coil, an alternating magnetic field control circuit used for controlling the transmitting coil through the switching switch for generating the alternating magnetic field to excite a target water body, and a main control unit used for emitting a control signal to switch and control the pre-polarized control circuit, the release circuit and the alternating magnetic field control circuit. The device is advantaged in that the pre-polarized field (Bp) and the alternating magnetic field (Bac) generated by thecombined current detect the disaster water around a tunnel, the Bp field is used for increasing the signal of the target water and improving the detection signal-to-noise ratio, and the Bac field is used for detecting a detection area layer by layer and can accurately locate the disaster water and realize non-intrusive detection of disaster water bodies under multi-angle and super-noise environments in the tunnel.
Owner:JILIN UNIV
Simple automatic water-saving spraying and dedusting system of temporarily constructed road
ActiveCN105126503AEfficient dust removalSimple structureUsing liquid separation agentWater sourceEngineering
The invention belongs to a simple automatic water-saving spraying and dedusting system of a temporarily constructed road. The system is composed of a ground art and an underground part. The ground part is composed of water pumps, a dust inductor, supporting columns, a spraying water pipe and fixing bases. The hollow supporting columns are located on one side or two sides of the temporarily constructed road at intervals through the fixing bases. The upper ends of the supporting columns are fixedly provided with water pipe support grooves, and the upper ends of the water pipe support grooves support the transverse spraying water pipe. The side, towards the temporarily constructed road, of the spraying water pipe is provided with buckle type spherical spray nozzles at intervals. Water inlets of the water pumps are communicated with a water storage pond, and water outlets of the water pumps are communicated with the two ends and the middle of the spraying water pipe respectively. The dust inductor control operation of the water pumps through a controller. The underground part comprises a basement dewatering well, a drainage ditch, the water storage pond and a settlement pond. The constructed road can be effectively dedusted through the method, pollution-free construction is guaranteed, and the system has the advantages of being simple and practical in structure, capable of saving water sources, low in pollution control cost, capable of recycling sewage in site and good in use effect.
Owner:CHINA CONSTR MUNICIPAL ENG +1
Tunnel early-stage support clearance-intrusion processing method and construction ancillary equipment of tunnel early-stage support clearance-intrusion processing method
ActiveCN104989419ADoes not affect normal constructionEasy constructionUnderground chambersTunnel liningEngineeringContour line
The invention discloses a tunnel early-stage support clearance-intrusion processing method and construction ancillary equipment of the tunnel early-stage support clearance-intrusion processing method. The method comprises the following steps of: performing optimized design on a design inner contour line of a tunnel (the design inner contour line of the arch part of the tunnel is lowered to be used as an optimum inner contour line of the arch part on the premise of keeping the tunnel design elevation unchanged; the optimized inner contour line of the arch part is positioned between a tunnel building boundary line and the design inner contour line of the arch part; the side wall circular arc line of the optimized inner contour line of the arch part is in consequent connection with the side wall circular arc line of the design inner contour line of the tunnel; the optimized inner contour line of the tunnel is obtained; and an optimization design drawing is determined); (2) reinforcing a clearance-intrusion section of the tunnel; (3) performing construction according to the optimization design drawing (lining is constructed on the clearance-intrusion section of the tunnel according to the optimized inner contour line; a secondary lining arch part of a non-clearance-intrusion section adjacent to the clearance-intrusion section in the longitudinal direction is in consequent connection transition with the constructed lining arch part of the clearance-intrusion section). The method and the equipment have the advantages that simplicity is realized; implementation is easy; the cost is low; the work efficiency is high; and the normal construction of the tunnel is facilitated.
Owner:广东省九域工程技术咨询有限公司
Tunnel arch wall primary support limit-intruding arch-replacing construction method based on gantry-type supporting
ActiveCN108915728AThe method steps are simpleReasonable designUnderground chambersTunnel liningSteel frameStructural integrity
Owner:CHINA RAILWAY 20 BUREAU GRP +1
Processing method of weak surrounding rock of substrate of novel tunnel invert
InactiveCN108386198AReduce the impact of settlementGuarantee the quality of the projectUnderground chambersTunnel liningSoluble glassSlurry
The invention relates to a processing method of weak surrounding rock of a substrate of a novel tunnel invert and belongs to the technical field of construction engineering. The processing method comprises the following specific steps: 1) excavation and leveling of the tunnel invert: excavating the tunnel invert according to the size of a design drawing, and artificially leveling the excavated tunnel invert; 2) performing primary support on the invert; 3) drilling: vertically drilling the primary support surface of the invert by adopting a hand drill, mounting steel pipes of which the diameteris phi 50mm at an interval of 1m in a quincuncial shape, and drilling grouting holes in the pipe walls of the steel pipes in a quincuncial shape; 4) grouting: filling cement grout after the steel pipes are drilled, when the underground water of the substrate of the invert is larger, filling cement-soluble glass grout, and during construction, when the grouting pressure in each hole reaches the designed grouting pressure, finishing grouting; and 5) after construction of the cement grout of the steel pipes is completed, normally constructing the invert and filling the invert according to the requirements of the design drawing. The processing method provided by the invention reduces the influence of foundation settlement of the weak surrounding rock as much as possible and ensures the quality of the main structure of the tunnel, the engineering quality and the operation safety of the tunnel.
Owner:SINOHYDRO BUREAU 14 CO LTD
Ventilation heating system for tunnels in high-altitude and cold regions as well as ventilation heating construction method
ActiveCN105134278ASimple structureReasonable designTunnel/mines ventillationSteel tubeTunnel construction
The invention discloses a ventilation heating system for tunnels in high-altitude and cold regions as well as a ventilation heating construction method. The ventilation heating system comprises an axial-flow ventilator, an air pipe and a ventilation heating pipe for heating cold air introduced into a tunnel, wherein the ventilation heating pipe is mounted on the air pipe and comprises a round heating pipe, an air outlet and an air inlet; the round heating pipe comprises an outer steel pipe, an inner steel pipe and a ventilation heating device mounted in the inner steel pipe. The ventilation heating construction method comprises the following steps: 1, mounting the axial-flow ventilator; 2, excavating the tunnel and performing ventilation heating construction; adopting the axial-flow ventilator for press-in ventilation and adopting the ventilation heating pipe to heat the cold air introduced by the axial-flow ventilator in a tunnel excavating construction process. The ventilation heating system and the ventilation heating construction method have the advantages as follows: the design is reasonable, the construction is convenient, the use effect is good, and the problems of influence caused by proneness to collision on tunnel construction, poorer heating effect, failure in meeting the heating requirement in a low-temperature environment and the like when the existing tunnel environment heating method is adopted can be solved.
Owner:CHINA RAILWAY FIRST GRP CO LTD +1
Remote monitoring system for shield machine
InactiveCN101916082AReduce investmentLow costProgramme controlComputer controlShield machineProtocol converter
The invention discloses a remote monitoring system for a shield machine. The system comprises a tunnel communication system (6) and a ground communication system (8) which are connected through a telephone line or an optical fiber (7), wherein the tunnel communication system (6) comprises a programmable logic controller (PLC) (1); the PLC (1) is connected with a network switch (3) through a network line (2); the network switch (3) is connected with a protocol converter (5) through a network line (4); and the ground communication system (8) comprises a ground monitoring system (11) and a protocol converter (9) which are connected through a network line (10). Through the remote monitoring system for the shield machine provided by the invention, technicians, managers and the like in a local area network and the Internet can know the working conditions and analyze historical data of the shield machine in real time and make correct judgment timely; and a plurality of computers for monitoring and analytic application run simultaneously.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
Secondary lining trolley structure in standard section of tunnel and splicing method
PendingCN107587885AEasy to assembleImprove work efficiencyUnderground chambersTunnel liningEngineeringPortal frame
The invention discloses a secondary lining trolley structure in a standard section of a tunnel and a splicing method. The secondary lining trolley structure comprises a lining trolley which comprisesa plurality of portal frames, two lower longitudinal beams and a walking device arranged below the lower longitudinal beams; a track device is arranged below the walking device; a template device is arranged out of the lining trolley; a plurality of hanging devices and embedded parts are arranged on the outer side of the template device. The invention also provides a splicing method of the secondary lining trolley structure. Primary mounting work of the secondary lining trolley is performed by means of chain blocks. According to the secondary lining trolley structure disclosed by the invention, the plurality of hanging devices for assembling the secondary lining trolley and a plurality of embedded parts for fixing the hanging devices are arranged on the outer side of the template device, the chain blocks are hanged on the hanging devices, and the primary mounting work of the secondary lining trolley is performed by means of the chain blocks, so that use of large mechanical equipment isreduced to a great extent, the secondary lining trolley structure is simple to operate, the steps and workload are reduced, and normal construction of a tunnel is not affected, and the work efficiency is increased.
Owner:中铁十局集团第二工程有限公司
Reinforced structure used for concrete displacement of shear wall and construction method of reinforced structure
The invention provides a reinforced structure used for concrete displacement of a shear wall and a construction method of the reinforced structure. The reinforced structure includes a newly poured concrete wall surface and a number of permanent steel stand columns, wherein the permanent steel stand columns are arranged in the newly poured concrete wall surface side by side at intervals; the two sides, parallel to the wall surface, of each permanent steel stand column are provided with reinforcing steel bar nets, and each permanent steel stand column includes a center steel column, a connection steel plate located at the upper end of the center steel column, a nut located at the upper end of the connection steel plate, and a screw rod; the top ends of the screw rods on the upper portions of the permanent steel stand columns are welded with upper steel plates, the bottom portions of the steel columns are welded with lower steel plates, the upper steel plates are fixed with upper floor slabs, and the lower steel plates are fixed with ground floor slabs; a horizontal support is arranged between every two adjacent steel columns so as to increase the stabilization of the permanent steel stand columns and prevent the lateral deformation of the steel stand columns. According to the reinforced structure and the construction method of the reinforced structure, the mode in which concrete is dismantled in sections and the permanent steel stand columns are built in the concrete is adopted, the normal construction of the upper structure is not affected, that is, the shear wall displacement and the upper structure construction are conducted at the same time, the progress of the whole project is ensured, and the whole construction period is not affected.
Owner:WUHAN UNIV
Temporary shoring system of tunnel arch wall initial shoring intruding limiting arch replacing construction
PendingCN108868834ASimple structureReasonable designUnderground chambersTunnel liningTunnel constructionSteel frame
The invention discloses a temporary shoring system of tunnel arch wall initial shoring intruding limiting arch replacing construction. The system comprises a temporary inverted arch arranged in a to-be-changed arch section and multiple portal type supporting structures which are arranged from front to back, and the temporary inverted arch is located at the inner side bottom of a tunnel upper portion hole; in the to-be-changed arch section, to-be-changed arch frames are to-be-supported arch frames except an initial replacing arch frame, each to-be-supported arch frame is supported through one portal type supporting structure, the temporary inverted arch comprises multiple temporary inverted arch supporting frames and longitudinal connecting structures, and each portal type supporting structure comprises a portal type supporting frame and a supporting assembly which is arranged on the same tunnel cross section with the portal type supporting frame. The system has the advantages of reasonable design, convenient construction and good using effect, the temporary inverted arch is taken as the basis and the portal type supporting structures are adopted, the structural comprehensiveness ishigh, the foundation is firm, the problems of tilting and collapsing of tunnel arch replacing steel frames can be effectively solved, the arch replacing construction process is safe and reliable, andthe tunnel construction process is not influenced.
Owner:CHINA RAILWAY 20 BUREAU GRP
Method of constructing center division of upper bench of tunnel crossing stratum fracture zone
ActiveCN108979667AThe method steps are simpleReasonable designUnderground chambersTunnel liningSupporting systemFracture zone
The invention discloses a method of constructing a center division of an upper bench of a tunnel crossing a stratum fracture zone. Upper bench excavation is performed on a construction tunnel from rear to front so as to obtain an excavated tunnel upper hole; a center division temporary support structure is arranged in the tunnel upper hole; a tunnel primary support structure of the tunnel upper hole includes an arch wall anchor net spray support structure and an arch wall rigid support system. The upper bench excavation includes I, excavating a left guide hole, and carrying out primary supporting; II, excavating a right guide hole and carrying out primary supporting. The method has simple steps, reasonable design, good construction simplicity and good service effect; a tunnel upper half section is excavated by means of a center division method, excavation section is narrowed, and stability of an arch top is guaranteed; both the arch wall rigid support system and the center division temporary support structure are supported via a lower bearing beam and are connected into an integrated stable-structure support system; settling of a primary support arch frame in the upper hole can beavoided, and stability of primary supporting can be effectively guaranteed.
Owner:CHINA RAILWAY 20 BUREAU GRP
Mounting method for bridge closure segment wavy steel web
ActiveCN107558376ASimple hole openingLow costBridge erection/assemblyBridge materialsOpen holeArchitectural engineering
The invention discloses a mounting method for a bridge closure segment wavy steel web. A circular hole is formed in the fixing end of the wavy steel web, a circular hole of the free end of the wavy steel web is subjected to transverse broaching to form a long-strip-shaped open hole, and finally the wavy steel web is mounted. Firstly, the mounting angle of a bridge closure segment is well adjusted,then welding is conducted after a nut corresponding to a bolt of the fixing end is tightened up in a constant temperature field, and then welding is conducted after a nut corresponding to a bolt of the free end is tightened up in a closure environment. The form of circular hole forming in the free end of a traditional closure segment wavy steel web is adjusted to be a long-hole form so as to adapt to the condition that the hole positions are hard to align at due to uncertainty of the length of the closure segment, the hole forming mode is simple, the cost is low, on-site mounting is convenient, normal construction is not affected, the adjustable quantity is large, the adaptability is high, and accurate mounting of the closure segment wavy steel web is achieved.
Owner:中铁四局集团市政工程有限公司
Construction method for lifting out shield tunneling machine under condition of envelop enclosure
ActiveCN104047607ADoes not affect normal constructionFlexible arrangement of construction periodTunnelsEngineeringShield tunneling
The invention discloses a construction method for lifting out a shield tunneling machine under the condition of an envelop enclosure. The construction method comprises the following steps: (1) implementing the envelop enclosure in a place where the shield tunneling machine is to be lifted out; (2) reinforcing a cutting edge part, which cuts the envelop enclosure, of the shield tunneling machine; (3) moving the shield tunneling machine forward to gradually enter the envelop enclosure; (4) stopping the shield tunneling machine after moving two to three circular segments within the envelop enclosure forward, and sealing a working face; (5) additionally arranging temporary supports in the circular segments; (6) excavating a shield shaft foundation ditch to a base of the shield tunneling machine within the envelop enclosure, and during the process of excavating the foundation ditch, driving anchor cables outward in the inner side walls of the envelop enclosure; (7) sloping to excavate earthwork under the base of the shield tunneling machine, building a shield tunneling machine pedestal, and finally lifting out the shield tunneling machine. By applying the construction method, as the construction period of a station can be flexibly arranged, the construction period of a shield zone is not restricted by the construction of station structures.
Owner:SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
Underground engineering induced polarization advance geological forecast wireless rapid acquisition system and method
ActiveCN106199730AQuick installationEasy to installTransmission systemsElectric/magnetic detectionWireless transmissionAutomatic control
The invention discloses an underground engineering polarization advance geological forecast wireless rapid acquisition system, including a support, a seal ring and a wireless acquisition and communication module. One side of the support is provided with a non-polarizing electrode, and the other side of the support is provided with a vacuum generation module used for adhering the support to a tunnel face. The seal ring is arranged on the surface of the tunnel face and used for supporting the support. The wireless acquisition and communication module is arranged on the support and comprises a wireless transmission module and a data acquisition module, and the data acquisition module is connected with the non-polarizing electrode. The rapid acquisition system provided by the invention controls electrode switching through wireless communication, so that manual changing of electrode is prevented, automatic control of detection electrode acquisition, transmission and switching is achieved, each electrode is acquired by each corresponding independent single-way acquisition module, the traditional sequential acquisition mode is improved, and the acquisition time is greatly shortened. The rapid acquisition system provided by the invention is advantaged in that the whole detection process is fast, the efficiency is high, detection can be immediately performed after installation and can be completed during each construction process gap in the tunnel, and normal construction cannot be influenced.
Owner:山东百廿慧通工程科技有限公司
Full-line automatic scanning device for tunnel second lining quality detecting and detecting method thereof
ActiveCN109959931AEasy to scanScan shortcutRadio wave reradiation/reflectionElectrical and Electronics engineeringEngineering
Owner:SHANDONG UNIV
Integrated steel anchor pipe foundation structure of highway guardrail and sound barrier and a construction method thereof.
ActiveCN109736156AFast constructionEasy constructionRoadwaysBulkheads/pilesMaterials preparationSound barrier
The invention discloses an integrated steel anchor pipe foundation structure of a highway guardrail and a sound barrier and a construction method thereof. A steel anchor pipe has the advantages of rapid construction and low cost construction, and the key is that the superior anchoring performance of the steel anchor pipe, which is deeply anchored in the ground, can provide large horizontal resistance for the guardrail and the sound barrier and ensure long-term safe use of an upper structure; and at the same time, the reinforcement of steel anchor pipe can improve the stability of subgrade slope. The construction method comprises the following construction methods of material preparation and manufacture, measuring and placing of steel anchor pipe pile positions, driving holes into steel pipes, preparing grouting liquid and working procedures, first grouting, embedding vertical ribs and installing grout sealing sheets and the like. The technology is mature, the working procedures are reasonable, the construction is carried out simultaneously with subgrade and pavement construction, and the construction method has the characteristics of rapid construction. A wide application prospectfor a road equipped with the guardrails and the sound barrier is achieved.
Owner:CHINA FIRST HIGHWAY ENG +1
Hole Reaming Method of Injection Suction Chip Removal in Horizontal Directional Drilling
ActiveCN103527092BSolution to short lifeSimple construction operationFlushingDrilling machines and methodsComing outHigh pressure
Owner:陕西中科非开挖技术股份有限公司
Method for continuously monitoring side wall deformation in tunnel invert excavation process
InactiveCN110595375AEasy to installDoes not affect normal constructionHeight/levelling measurementUsing optical meansInfraredEngineering
The invention discloses a method for continuously monitoring side wall deformation in a tunnel invert excavation process. The method solves the problem that the side wall deformation is lack of continuous and reliable monitoring in the existing tunnel invert excavation process. The method comprises the steps of: fixedly installing an infrared ray generator on each of two side walls of a constructed invert section; fixedly installing an infrared ray receiver on each of two side walls, close to one end of a tunnel face, of an invert excavation section; installing a plurality of infrared ray penetrating rings on two side walls of an invert construction section; adjusting positions and angles of the infrared ray penetrating rings, so that infrared rays emitted by the infrared ray generators penetrate through each infrared ray penetrating ring on the same side and then reach the infrared ray receivers on the same side; and carrying out invert excavation, giving an alarm by means of each infrared ray receiver when the infrared ray receiver does not receive infrared ray signals emitted from the infrared ray generator on the same side, and determining that the side wall on the same side has deformed.
Owner:CHINA RAILWAY TUNNEL GROUP CO LTD +1
Method for monitoring axial force of foundation pit steel support by means of laser distance measuring sensor
The invention relates to a method for monitoring the axial force of a foundation pit steel support by means of a laser distance measuring sensor. The method comprises the following steps that (1), after the foundation pit steel support is erected and before pre-tightening force is applied, a fixing device is welded to a foundation pit steel support end steel base plate on one side, and a reflector is arranged at the corresponding position of a foundation pit steel support steel base plate on the other side; (2), the laser distance measuring sensor and the fixing device are connected, laser points of the laser distance measuring sensor irradiate the center of the reflector to be subjected to point measurement, and then readings are read; and (3), according to the specified measurement frequency, the above measurement steps are repeated, the readings are recorded, the difference between the readings and the measured value of the first time is steel support deformation at various monitoring time points, and the axial force of the steel support can be calculated based on the Hooke's law. According to the method for monitoring the axial force of the foundation pit steel support, the structure is simple, mounting is convenient, operation is fast, and the precision requirement can be met; and the manufacturing cost is low, and application and popularization are easy.
Owner:SHAOXING UNIVERSITY
Push-down settlement united test method and test device of foundation and road bed
The invention relates to a push-down settlement united test method of a foundation and a road bed, which comprises the following steps: a. punching a test hole on the foundation, wherein the depth of the test hole is the foundation settlement test range; b. distributing a traditional layering settlement gauge in the test hole, leveling the surface of the foundation after finishing the laying; arranging a hidden settlement test device; laying one hidden settlement test device every 1-2m following the increment of the filling height; c. starting the test of the settlement of the foundation and the road bed when the road bed is started to fill, measuring the absolute settlement of the surface of the road bed and the foundation by using the hidden settlement test devices, measuring the relative settlement of the hole bottom and the ground by the layering settlement gauge; setting the relative settlement of the hole bottom and the ground to be Delta s and the absolute settlement of the ground to be s0 as well as the absolute settlement s of the hole bottom to be s, wherein s is equal to s0-Delta s. The invention also discloses a hidden settlement test device. The invention tests the settlement of the road bed without influencing the road bed construction, and the absolute settlement test of any point in the foundation only needs punching within the test range.
Owner:SHANDONG UNIV
Tunnel tunneling trolley
PendingCN107893661AEliminates the inconvenience of evacuating from dangerous areasDrilling efficiency increasedTunnelsSlagRock tunnel
The invention provides a tunnel tunneling trolley. The tunnel tunneling trolley comprises a trolley body, a rock drilling system, a rock-breaking system, a slagging off system and a slag soil conveying system, wherein the rock drilling system, the rock-breaking system, the slagging off system and the slag soil conveying system are mounted on the trolley body. The rock drilling system comprises a plurality of movable rock drilling machines located at the front end of the trolley body. The rock-breaking system includes a retractable rock-breaking arm and a rock-breaking device mounted at the front end of the rock-breaking arm. The slagging off system comprises a retractable slagging off arm and a digging bucket mounted at the front end of the slagging off arm. The slag soil conveying systemcomprises a conveying belt extending from the front end of the trolley body to the back end. The tunnel tunneling trolley integrates functions of rock drilling, rock breaking, slagging off and earthwork conveying and greatly improves the construction efficiency.
Owner:成都一格机械有限公司
Ventilation and heating system and ventilation and heating construction method for tunnels in high-altitude and cold regions
Owner:CHINA RAILWAY FIRST GRP CO LTD +1
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