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339results about "Shaft sinking" patented technology

Deep strong permeable fracture soft rock stratum vertical shaft frozen wall analysis method

The invention relates to the technical field of mine freezing construction, in particular to a deep strong permeable fracture soft rock stratum vertical shaft frozen wall analysis method which comprises the steps that freezing points reaching the freezing temperature are collected and fitted into a freezing temperature field; dividing a freezing area according to the position of each freezing point in the freezing temperature field and the time point when the freezing point reaches the freezing temperature, and forming a freezing boundary according to the morphological characteristics of the freezing area; deriving position points at the frozen boundary according to the positions of the frozen boundary in a plurality of time periods, and checking the advancing trend of the frozen boundary according to the spacing distance and the spacing temperature gradient between the position points; based on the advancing trend of the current frozen boundary, setting a boundary condition under the advancing trend; dividing the freezing temperature field into a plurality of evaluation temperature surfaces by using the boundary condition of the current freezing boundary, iterating the freezing temperature field by using the evaluation temperature surfaces, and correcting the freezing boundary; the accuracy of freezing boundary identification is realized, and the safety and efficiency of freezing construction are improved.
Owner:ANHUI UNIV OF SCI & TECH

Comprehensive advanced geological forecasting method for ultra-deep vertical shaft of metal mine

The invention provides a comprehensive advanced geological forecasting method for an ultra-deep vertical shaft of a metal mine, and belongs to the technical field of water prevention and control in construction of the ultra-deep vertical shaft of the metal mine. The conditions that a tectonic fracture zone, a high confined aquifer and the like possibly exist in the deep stratum, have construction hidden dangers and are prone to causing water burst disasters are accurately recognized, and the advanced detection precision of the deep stratum of the shaft is improved; meanwhile, a feedback forecasting process of geological analysis-geological modeling-geophysical prospecting circle target-drilling verification is formed, a multi-level verification system is constructed, the specific geological condition of an abnormal area is clearly detected, and the advanced positioning and judgment accuracy of a geological abnormal body in a deep stratum is remarkably improved; and by integrating and fusing multi-source geological information, the geological abnormal body information is comprehensively analyzed and judged, so that the requirements of deep rock mass mechanical property analysis and water inrush disaster prevention and control are met.
Owner:SANSHANDAO GOLD MINE SHANDONG GOLD MINING LAIZHOU +2

Online high-precision pose measurement and control method and system for vertical shaft heading machine

The invention discloses an online high-precision pose measurement and control method and system for a vertical shaft heading machine, relates to the technical field of vertical shaft construction, and solves the problems that factors considered by an existing pose measurement and control method are not comprehensive enough, the deviation correction amplitude cannot be flexibly adjusted according to the deviation, and the pose change of the heading machine after adjustment cannot be predicted. According to the technical scheme, the method is characterized in that displacement deviation, displacement deviation variable quantity, angle deviation and angle deviation variable quantity of a heading machine pose and a target pose are obtained through a pose measuring system, the deviations are decomposed into XOZ and YOZ planes and input into a combined fuzzy controller of the corresponding planes, and the pressure difference of a supporting oil cylinder and a hydraulic cylinder is obtained; constructing an input feature sequence based on the pressure difference of the supporting oil cylinder and the hydraulic cylinder, inputting the input feature sequence into a pose prediction model based on a neural network, and predicting the displacement deviation and the angle deviation of the heading machine in a future time period, so as to predict the pose change of the heading machine after the pressure difference of the supporting oil cylinder and the hydraulic cylinder is adjusted; the problems are solved.
Owner:SINOHYDRO BUREAU 5 +1

Round working well main body structure

The utility model discloses a circular working well main body structure which comprises a cylindrical hollow side wall, a top plate located at the top is arranged at the upper end of the side wall, a bottom plate located at the bottom is arranged at the lower end of the side wall, #-shaped crossed internal partition walls are arranged in the internal space of the side wall, and the internal partition walls divide the internal space. And four shield launching and receiving holes are reserved in the lining wall on the inner side of the side wall. According to the utility model, the inverted circular lining wall and the enclosure structure form a superposed side wall, the support rigidity of an internal #-shaped crossed longitudinal and transverse beam (wall) system is large, and structural members are permanently and temporarily combined, so that the stability of the multi-hole structure of the ultra-deep circular working well is enhanced, and the formation deformation is effectively controlled. The longitudinal and transverse beam (wall) system is reasonable in space layout, plate span is reduced, a self-balancing space stress system is formed, the thickness of the top plate and the thickness of the bottom plate are small under the condition of large burial depth, the plate face is flat, arching is not needed, construction is convenient, and space utilization is reasonable.
Owner:CHINA RAILWAY DESIGN GRP CO LTD

Large vertical shaft and construction method thereof

The embodiment of the invention provides a large vertical shaft and a construction method thereof, and belongs to the technical field of underground constructions.The vertical shaft comprises a shaft body formed by splicing a plurality of segments; the top ring beam is annular and is arranged on the outer side surface of the top of the shaft; the uplift piles are arranged below the top ring beam in the depth direction of the vertical shaft and located on the outer side of the shaft; the bottom end of the uplift pile is lower than the bottom end of the shaft and is integrally connected with the bottom end of the shaft in a pouring mode. The top ends of the uplift piles are fixedly connected with the top ring beam; the horizontal distance between the uplift pile and the outer side face of the shaft is smaller than or equal to the pile diameter of the uplift pile. According to the large vertical shaft and the construction method thereof, the uplift piles, the top ring beam fixed to the stratum and the shaft are fixedly connected into the integrated structure, buoyancy caused by underground water on the periphery of the deep vertical shaft can be resisted, and the large vertical shaft and the construction method thereof can be suitable for building the ultra-large and ultra-deep vertical shaft with the diameter being 16 m or above and the depth being 50 m or above.
Owner:CHINA RAILWAY 15TH BUREAU GROUP CORPORATION LIMITED +2

Large shaft and method of construction thereof

This application provides a large vertical shaft and its construction method, belonging to the field of underground construction technology. The shaft includes: a shaft cylinder composed of multiple ring segments; a ring-shaped top beam located on the outer side of the top of the shaft cylinder; and tension piles positioned below the top ring beam and outside the shaft cylinder along the shaft's depth direction. The bottom of the tension piles is lower than the bottom of the shaft cylinder and is cast integrally with it. The top of the tension piles is fixedly connected to the top ring beam. The horizontal distance between the tension piles and the outer side of the shaft cylinder is less than or equal to the pile diameter. The large vertical shaft and its construction method provided in this application integrate the tension piles, the top ring beam fixed to the ground, and the shaft cylinder into a single structure, capable of resisting the buoyancy caused by groundwater surrounding a deep shaft. This method is suitable for constructing ultra-large and ultra-deep vertical shafts with diameters exceeding 16 meters and depths exceeding 50 meters.
Owner:CHINA RAILWAY 15TH BUREAU GROUP CORPORATION LIMITED +2

Vertical shaft excavation construction method

The invention discloses a vertical shaft excavation construction method, a vertical shaft to be excavated is divided into a first vertical shaft to be excavated and a second vertical shaft to be excavated, and the construction method comprises the following construction steps that S1, an upper flat tunnel is excavated and constructed to the bottom of the first vertical shaft to be excavated to form a first cross section, the lower flat tunnel is excavated to the bottom of the second vertical shaft to be excavated to form a second cross section; s2, a section of the lower portion of the first shaft to be excavated serves as a protection section to be reserved, and construction is conducted on the top of the first shaft to be excavated to the top of the protection section through a normal well method; a slag sliding pilot shaft is constructed downwards along the axis of the second vertical shaft to be excavated through a raise-boring method; s3, after the slag sliding pilot shaft construction is completed, the protection section continues to be constructed to the first cross section through the normal well method; and S4, a second vertical shaft is planned to be excavated to a second cross section through inverse well construction by adopting construction equipment of a normal well method. According to the vertical shaft excavation construction method, the technical problem that the construction difficulty of the deep and large vertical shaft is high is solved.
Owner:POWERCHINA ZHONGNAN ENG +1

Non-blasting excavation construction method and working platform for vertical shaft and inclined shaft

The invention discloses a vertical shaft and inclined shaft non-blasting excavation construction method and a working platform. A guide shaft space is constructed through mutual cooperation of a forward drilling machine and a raise boring machine; measuring and setting out the section, determining the construction footage, and generating drilling coordinates according to the geometrical relationship between the pilot well space and the tunnel face; according to a preset rule, splitting hole sites of a staggered hole net are arranged on the outer edge and the interior of the section; according to the drilling coordinates and the splitting hole positions, splitting the rock mass through a splitting rod according to preset parameters; collecting and obtaining hole periphery convergence data in real time, and correcting the construction footage according to the data feedback; collecting the slag charge of the tunnel face to a guide well mouth through mechanical slagging-off operation, and sliding the slag through the guide well; and carrying out primary support and updating support parameters in real time, and entering the next cycle footage after updating is completed. The requirements for low disturbance, early supporting, high safety and high efficiency can be met, adaptation to complex working conditions is achieved through unmanned and remote centralized control, and therefore the construction requirements under the complex working conditions are met.
Owner:HUNAN TAOYUAN PUMPED STORAGE CO LTD +1

Drill rod tension type vertical shaft tunneling process

The invention discloses a drill rod tension type vertical shaft tunneling process which comprises the following steps: constructing a pilot shaft into a stratum by utilizing a raise boring machine, constructing a starting shaft, sequentially hoisting a tunneling machine and a hanging scaffold system into the starting shaft by utilizing hoisting equipment, and driving a tension drill rod to sequentially penetrate through the hanging scaffold system and the tunneling machine by utilizing the raise boring machine, and the tunneling machine continues to be lowered into the lower horizontal roadway and is fixed through the drill rod tensioning device, the tunneling machine starts to conduct tunneling circulating operation downwards along the tension drill rod through the stepping mechanism, and the hanging scaffold system conducts well wall supporting circulating operation downwards along the tension drill rod through the stepping mechanism till the tunneling machine conducts tunneling to the lower horizontal roadway. The tension drill rod serves as a main fixing structure and can bear the weight of the heading machine, the rock breaking positive pressure and the weight of the hanging scaffold, and the heading effect is supported not to be affected and limited by the stratum; the tension drill rod provides guidance, and the tunneling machine is guided on a correct tunneling path in real time, so that the construction efficiency and the tunneling well completion quality are improved.
Owner:BEIJING CHINA COAL MINE ENG CO LTD

Construction technology for discharging slag under dead weight of road tunnel vertical shaft heading machine

The invention provides a self-weight lower deslagging construction technology of a road tunnel vertical shaft heading machine, and relates to the technical field of tunnel vertical shaft construction. Stable conversion of the deslagging process is achieved through the dynamic regulation and control technology, a progressive pressure reduction strategy is adopted to adjust tunneling parameters in four stages to enter the position above a raise-boring working chamber (thrust is decreased from 14000kN to 8000kN, torque is decreased from 3000kNm to 2000kNm), step changing is conducted by reasonably utilizing the positions of a supporting shoe, a stabilizing shoe and a cutterhead relative to an auxiliary transverse channel, and the tunneling efficiency is improved. Therefore, the conversion preparation of the tunneling process is completed.
Owner:CHINA FIRST HIGHWAY ENGINEERING CO LTD +1

Casing for inserting freezing pipe, casing with built-in freezing pipe, and installation method thereof

To provide a casing for inserting a freezing pipe, a casing with a built-in freezing pipe, and an installation method thereof, which can create frozen soil including the ground in an area in contact with an underground structure while installing a freezing pipe close to the underground structure without damaging the underground structure in the ground.SOLUTION: A casing 50 for inserting a freezing pipe comprises a first casing 10 having an open tip 11, a first bit 20 provided at the tip 11, a first hollow 15 provided inside, and a base end 13 adapted to be pushed in, and a check valve 30 provided on the tip 11 side of the first hollow 15. A freezing pipe 60 can be freely inserted into the first hollow 15 from the base end 13 side, and the check valve 30 can freely discharge drilling water supplied from the base end 13 side of the first hollow 15 forward in the drilling direction of the first casing 10.SELECTED DRAWING: Figure 1
Owner:TAISEI CORP +1

Vertical shaft tunneling and supporting integrated trolley

The invention relates to a vertical shaft tunneling and supporting integrated trolley which comprises a barrel-shaped frame body which moves up and down along a vertical shaft. The crushing and slagging-off arm support system comprises a slagging-off crushing device, and the slagging-off crushing device is used for slagging-off and / or crushing and trimming operation; the crushing and slagging-off arm frame system slides along the axis direction of the cylindrical frame body; the rock drilling arm frame system comprises at least two sets of first rock drilling arm frames, the first rock drilling arm frames have a folded state in which the first rock drilling arm frames are attached to the inner wall of the cylindrical frame body and an unfolded state in which the first rock drilling arm frames face the vertical shaft tunnel face to conduct rock drilling operation, and when the rock drilling arm frame system is in the folded state, the rock drilling arm frame system is arranged in the cylindrical frame body. The vertical shaft tunneling and supporting integrated trolley provided by the invention can realize whole-process operation of vertical shaft expanding excavation drilling, slagging-off and supporting operation.
Owner:CHINA RAILWAY SUNWARD ENG EQUIP CO LTD

Shaft sinking machine and method of construction thereof

The application discloses a shaft tunneling machine and a construction method thereof. The shaft tunneling machine comprises a tunneling host connected with a ring supporting shoe device through a stepping device, the ring supporting shoe device is connected with the tunneling host through a supporting shield body, the supporting shield body is connected with a fixed part of a ring rotary drive of the tunneling host through an extension device, a rotary part of the ring rotary drive is connected with an oscillatable cutting device, the cutting device is used for excavation, different diameters of excavation can be realized by controlling oscillation of the cutting device and extension stroke of the ring supporting shoe device, and the reconstruction of the tunneling host can be completed by replacing the supporting shield body when the diameter is changed. The stepping device is arranged between the ring supporting shoe device and the supporting shield body, and the extension device is arranged between the supporting shield body and the tunneling host, so that the extension stroke of the cutting device can be effectively enlarged, frequent descending of the whole shaft tunneling machine is avoided, the tunneling efficiency is improved, and the disturbance of frequent stepping to the soil body of a hole wall is effectively reduced.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD

Drill head for creating a borehole in the ground

PendingEP4617472A3Drill bitsConstructions
The invention relates to a drill head for creating a substantially vertical bore in the ground, comprising a body which can be connected to a rotary drive of a drilling device, with drilling tools arranged on the body for loosening the soil at a working face of the bore, with a suction device for transporting away the loosened soil at the working face, which suction device can be connected to a pump, wherein the suction device has an opening region arranged on the body with at least one opening in the region of the drilling tools at the working face.It is advantageous that at least one nozzle for emitting a jet of a medium, preferably air or a liquid, is provided on the underside of the drill head, and that the jet causes the loosened soil to move into an area of ​​the working face which is crossed by the opening when the drill head rotates, that the jet strikes a guide plate, thereby changing the direction of movement of the loosened soil in the direction of the opening area, and that the guide plate is arranged as a straight or curved element on the underside of the drill head, and that the arrangement is diagonal or at least partially circumferential.
Owner:HERRENKNECHT AG

Shaft rapid excavation apparatus

ActiveCN117231223BIncrease the rate of excavationeasy dischargeShaft sinkingStructural engineeringDrill bit
The application discloses a vertical shaft rapid excavation equipment, which comprises a base body, a deep pit groove is formed in the top of the base body, a base and a second ring beam are arranged in the deep pit groove, a fixing assembly for positioning the second ring beam is arranged on the top of the base, a positioning frame is fixedly connected to the circumferential inner wall of the second ring beam, a moving groove is formed in one side of the positioning frame, a sliding column is fixedly connected to the bottom inner wall of the moving groove, and a moving block is sleeved with the circumferential outer wall of the sliding column. In the application, the drill bit can be driven to rotate together with the horizontal plate during the circumferential movement of the horizontal plate, the drilling depth and position of the drill bit can be adjusted by starting the hydraulic rod during the drilling of the drill bit, the drilling area of the drill bit is enlarged, the drilling demand of people on the vertical shaft is met, the whole drilling process does not need manual work to go deep into the bottom of the vertical shaft, the safety of the whole equipment is further improved, and the drilling efficiency on the vertical shaft is improved.
Owner:CHINA RAILWAY SEVENTH GRP CO LTD +2

Upper foundation pit and lower tunnel combined construction structure and construction method in saturated soft soil layer

A kind of saturated soft soil stratum upper foundation pit-under tunnel combined construction structure and construction method, structure includes foundation pit, the bottom of foundation pit is connected with tunnel by shaft, and geogrid is arranged above the bottom of foundation pit;The outside of foundation pit is provided with steel sheet pile from inside to outside, pit interior dewatering well, bored pile, rotary jetting pile water-stop curtain and pit exterior dewatering well;First, bored pile and rotary jetting pile are constructed in site, intercept groundwater outside foundation pit, pit exterior dewatering is carried out by driving pit exterior dewatering well in water-stop curtain periphery, after completion of pit exterior dewatering, foundation pit is excavated in stages, steel sheet pile is driven to support after completion of excavation of section I, dewatering well is driven to carry out internal dewatering of foundation pit;Excavate section II to predetermined depth, geogrid is reinforced at the bottom of foundation pit, excavate shaft in foundation pit to the same depth of lower tunnel, excavate horizontal passage to tunnel interior to tunnel body, and carry out excavation support;Effectively control the deformation of tunnel section, reduce the influence on foundation pit, and then ensure construction safety, reduce the influence between foundation pit and tunnel.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Cantilever type partial section tunneling system for vertical shaft

PendingCN122082768AIncreased crushing and excavation speedImprove crushing and excavation efficiencyShaft sinkingConveyor partsClassical mechanicsCantilever
The invention discloses a vertical shaft cantilever type partial section tunneling system which comprises a working platform and further comprises an excavating and loading main body structure arranged at the lower end of the working platform. The plurality of horizontal conveyors are uniformly distributed on the working surface of the shaft bottom of the vertical shaft; the multiple sets of excavating equipment are arranged on the excavating and loading main body structure and are arranged between every two adjacent horizontal conveyors at intervals; the vertical conveying device is arranged on the working platform, a plurality of horizontal conveyors are arranged, excavating equipment is arranged between every two adjacent horizontal conveyors, the working face of the bottom of the vertical shaft can be evenly divided into a plurality of working areas, and therefore the crushing and tunneling speed of a rock stratum is multiplied. The crushing and tunneling efficiency is improved, meanwhile, the equipment cost can be reduced, and the device is suitable for different section geological conditions, more flexible to use and easy to maintain.
Owner:HEFEI DESIGN & RES INST LLC OF COAL IND +1

Shaft sinking machine attitude determination system and attitude determination method

The application relates to the technical field of shaft tunneling machines, in particular to a shaft tunneling machine posture determination system and a posture determination method, which comprises a computer, a plumb instrument assembly, a support platform and a posture acquisition module, wherein: the posture acquisition module is arranged on a load platform at the top of the shaft tunneling machine and comprises a gyroscope, a two-axis inclinometer, a control box and a camera; the support platform is multilayered and arranged above the load platform; the computer is arranged on the upper support platform and is in communication connection with the control box; the plumb instrument assembly is arranged on the inner wall of the shaft and irradiates on the load platform through the measuring channels of the multilayer support platform. The application adopts the combined mode of the plumb instrument, the camera, the two-axis inclinometer and the gyroscope, calculates the posture of the shaft tunneling machine, eliminates the influence of the horizontal deviation value caused by the self-rotation angle of the shaft tunneling machine, and can accurately calculate the horizontal deviation posture of the shaft tunneling machine.
Owner:TIANHE MECHANICAL EQUIP MFG

Vertical shaft tunneling device with supporting structure

The invention discloses a vertical shaft tunneling device with a supporting structure, and relates to the technical field of vertical shaft tunneling. In order to solve the problems that an existing device is low in tunneling efficiency, poor in supporting stability, inflexible in depth adjustment and the like, the vertical shaft tunneling device with the supporting structure comprises a tunneling assembly and further comprises a supporting assembly fixed to the upper portion of a vertical shaft, and an adjusting assembly is connected to the supporting assembly; the depth exploration assembly slidably penetrates through the center of the supporting assembly and is connected with the adjusting assembly, and the center of the supporting assembly and the center of the adjusting assembly are kept coaxially aligned; the tunneling assembly is connected to the tail end of the depth exploration assembly; the adjusting assembly is matched with the depth exploration assembly to achieve adjustment of the first depth, the second depth and the third depth of the tunneling assembly in the tunneling direction. Flexible adjustment, safety and stability of vertical shaft tunneling operation are guaranteed.
Owner:BEIJING MUNICIPAL ROAD & BRIDGE

Slag storage system and method of operation thereof

The application discloses a kind of residue storage systems and working method thereof, belong to tunnel construction equipment technical field, to solve the problem of powdery slag into fan in the existing slagging process, the residue storage system includes residue storage device (5) and negative pressure generating system, residue storage device (5) contains first residue storage tank (501), second residue storage tank (505) and residue discharge pipe (504), the negative pressure generating system can make the air pressure in second residue storage tank (505) less than the air pressure in residue discharge pipe (504), the residue in residue discharge pipe (504) in the process of entering first residue storage tank (501), the small particle residue in the residue, which is smaller than the inner diameter of powdery slag passage (502), can enter second residue storage tank (505).The residue storage system can separately pick out (or filter out) and store powdery slag and large block slag during the slagging process, to avoid powdery slag into fan in the end of slagging main pipeline.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD

Vertical shaft excavation drilling tool and device based on urease

The vertical shaft excavation drilling tool comprises a liquid injection mechanism used for injecting a urease solution and a drill rod, a drill bit is fixedly installed at one end of the drill rod, a groove is formed in the side wall of the drill rod and extends in the length direction of the drill rod, and the liquid injection mechanism is used for injecting the urease solution. A liquid inlet hole and a plurality of liquid outlet holes which are communicated with the groove are formed in the side wall of the drill rod, the liquid inlet hole is located at the end, away from the drill bit, of the drill rod, the liquid outlet holes are distributed in the length direction of the groove and located at the end, close to the drill bit, of the drill rod, and the liquid injection mechanism is communicated with the liquid inlet hole. The utility model aims to solve the problems that in the prior art, cement slurry materials or cement-water glass mixed slurry is mostly adopted to block cracks after water leakage of the side wall of a vertical shaft, but the cement slurry materials can shrink after being hardened, small cracks are easily generated, the cracks are gradually enlarged under hydraulic scouring, and the water blocking effect is poor. And the construction difficulty of plugging the crack after water leakage is high.
Owner:ROAD & BRIDGE INT CO LTD +2

Multi-stage gripper shoe type reaming vertical shaft heading machine

The invention discloses a multi-stage gripper shoe type chambering vertical shaft heading machine, and belongs to the technical field of vertical shaft heading. The equipment comprises a tunneling module used for reaming excavation of a vertical shaft; the lining module is arranged above the tunneling module and used for subsequent pouring lining of the wall face of the vertical shaft, and the lining module comprises a step changing unit; the rear matched supporting columns are arranged between the tunneling module and the lining module, and the rear matched supporting columns are used for connecting the tunneling module and the lining module and providing supporting points for descending and propelling of the subsequent lining module; according to the invention, during the tunneling process, the weight of the lining module is directly transmitted to the double-layer gripper shoe assembly in the tunneling module through the rear supporting column, so that the requirement on the hoisting capacity of a wellhead is reduced, and the well wall lining support closely follows the excavation operation, so that the bareness time of surrounding rock is shortened; in the step changing process, the weight of the tunneling module is borne by the lining module and does not depend on the integrity and strength of the rock stratum in front of the cutterhead any more, and the construction safety is improved.
Owner:HANGZHOU EAST CHINA UNDERGROUND ENG INTELLIGENT EQUIP RES INST CO LTD +2

A vertical shaft method for constructing a ventilation shaft of an extra-long highway tunnel

The application provides a special long highway tunnel ventilation shaft vertical shaft method construction method, comprising the following steps: S1, measuring and lofting; S2, shaft mouth section construction; S3, vertical shaft lifting equipment installation; S4, shaft body construction; S5, equipment inspection, adjustment and next S4 until excavation and support are completed; S6, middle line re-measurement, shaft bottom construction, shaft bottom leveling, layer lining and backfilling, and hoist platform modification; S7, measuring and lofting, adjusting the hoist platform center to the vertical shaft design center, shaft inner anti-drainage layer construction, steel bar binding, form erection, concrete pouring, finishing and maintenance, and second lining construction of the vertical shaft; S8, lifting the hoist platform, and next S7 until the second lining is completed; S9, dismounting the lifting equipment. The application has strong applicability in project construction under poor geological conditions and strict construction period requirements; the construction period can be freely set, is not affected by the main tunnel construction period, is more scientific and reasonable, the construction process is reasonably connected, and the construction quality is safe and reliable.
Owner:CHINA RAILWAY 21ST BUREAU GROUP FIFTH ENGINEERING CO LTD

Vertical shaft construction method

The invention discloses a vertical shaft construction method, and belongs to the technical field of building construction. The problems of water burst collapse and low procedure connection efficiency caused by long exposure time of shaft surrounding rock in the traditional process are mainly solved. The method comprises the steps that an initial shaft section is excavated at the design position of the shaft, a prefabricated concrete shaft wall arc plate is installed, and a grouting pipe is pre-buried on the outer side of the arc plate and an annular water stop steel plate is welded; injecting cement-water glass double-liquid slurry into the annular gap to form a sealing layer; a directional grouting floral tube is driven in along the outline of the well bottom, and quick-setting type double grout is injected to form an annular grouting reinforcing body; after the telescopic baffle system is installed, segmental excavation is conducted, and the baffle system is synchronously contracted to support the shaft surrounding rock; and after a cushion layer is laid, a next section of well wall arc plate is installed and connected with the annular water stop steel plate through a flange, and grouting and excavation are repeated till the designed depth is reached. The method is suitable for safe and efficient construction of water-rich sand layers and fractured stratum vertical shafts.
Owner:SINOHYDRO BUREAU 6 CO LTD

Ultrasonic infrared laser device for detecting vertical shaft pilot tunnel

The invention discloses an ultrasonic infrared laser device for detecting a vertical shaft pilot tunnel, and the device comprises a mounting seat plate which is disposed in a cutterhead crown. The device mounting frame is mounted on the mounting seat plate; the ultrasonic radar and the infrared laser are both mounted on the device mounting rack; the control box is connected with the ultrasonic radar and the infrared laser; the system comprises an integrated sensor, an adjustable installation structure and a wireless control system, the integrated sensor is provided with a wireless sensor, the terminal host is provided with a wireless receiver, the control box can transmit data to the wireless receiver in a wireless mode, and the terminal host analyzes the blockage condition through the data. An ultrasonic radar and an infrared laser are integrated, and the complementary advantages of long ultrasonic detection distance and clear infrared laser contour recognition are utilized to accurately recognize the anomalies such as blockage and collapse in the pilot tunnel.
Owner:CHINA THREE GORGES PROJECTS DEV CO LTD +3

Advanced grouting pipe splicing construction method and casing pipe

The invention belongs to the technical field of small tunnel construction, and particularly relates to an advanced grouting pipe splicing construction method and a casing pipe, and the method comprises the following steps: S1, excavating a working vertical shaft; s2, transverse advanced grouting is conducted on the first section; s3, excavating a first-section transverse channel; s4, mounting a transverse sleeve; s5, constructing a transverse channel; and S6, placing the pipeline. Soil in front of the vertical shaft and the channel is solidified through advanced grouting, the collapse risk in the excavation process is reduced, and construction safety is guaranteed; the process of circulating grouting, excavation and supporting is adopted, modular line production is formed, the method is suitable for excavation of small tunnels, and a series of problems caused by the fact that the whole road surface needs to be excavated when an underground pipe network is laid at present are solved; the working vertical shaft serves as an earthwork centralized transportation channel, and blocking of ground traffic caused by traditional open excavation is avoided; and finally, a pipeline is installed in the prefabricated transverse sleeve, it is ensured that the pipeline is accurately positioned and is prevented from being extruded by the stratum, and the engineering quality is improved.
Owner:STATE GRID BEIJING ELECTRIC POWER CO +2

Reverse well pipe jacking construction system and method and application of reverse well pipe jacking construction system and method

The invention discloses a top-down well pipe-jacking construction system and method and application of the top-down well pipe-jacking construction system and method, and relates to the technical field of vertical well wall construction.The top-down well pipe-jacking construction system comprises an earth excavation module, a formwork supporting module, a steel bar arrangement module, a concrete pouring module and a concrete strength calculation module.The formwork structure can be conveniently and integrally hoisted through hoisting equipment, and anchoring rods are arranged; the whole formwork structure can be kept fixed during pouring, when the formwork structure is disassembled, the formwork structure only needs to be hoisted after being demolded, when the formwork structure is arranged, the formwork structure only needs to be hoisted into the pouring space in a hoisting mode, and rapid arrangement of the formwork structure can be achieved. The problem that inconvenience is caused due to the fact that a plurality of formworks need to be hoisted for multiple times when a traditional formwork is hoisted is solved, meanwhile, when the formwork is arranged and dismantled, manual participation is not needed, the formwork structure can be recycled, the material loss rate and the construction cost are reduced, and the construction efficiency is guaranteed on the premise that personnel safety is guaranteed.
Owner:SHANXI NO 3 CONSTR ENG

Vertical heading machine with switchable upper and lower deslagging modes and hard rock cutterhead of vertical heading machine

The invention discloses a vertical heading machine with switchable upper and lower deslagging modes and a hard rock cutterhead thereof. When the cutterhead adopts the upper deslagging mode, a slag suction pump is arranged in the center of the back of the cutterhead, the slag suction pump is connected with a slag suction pipe, and a suction port of the slag suction pipe is arranged at the position of a panel of the cutterhead; and when the cutter head adopts a lower deslagging mode, the slag suction pump and the slag suction pipe are detached, a raise boring machine is erected on the back of the cutter head, construction of a lower deslagging pilot tunnel is completed through the raise boring machine, and a water and air spraying device is arranged at a spoke of the cutter head. The cutter head structure is directly applied to the vertical heading machine. The vertical heading machine hard rock cutterhead capable of switching the upper deslagging mode and the lower deslagging mode aims to adapt to the upper deslagging mode and the lower deslagging mode through the cutterhead, complex structural transformation does not need to be conducted on the whole cutterhead during mode switching, and switching of the two modes can be achieved only through fine adjustment.
Owner:TIANHE MECHANICAL EQUIP MFG

Rail sliding table device applied to inclined shaft excavation trolley

The utility model relates to the technical field of excavation equipment of water diversion inclined shaft sections, and discloses a track sliding table device applied to an inclined shaft excavation trolley, which comprises a truss, guide ways are fixedly connected to opposite ends of the top side of the truss, and sliding tables are slidably connected to the top sides of the two guide ways. The front ends of the far sides of the sliding tables are hinged to moving assemblies through upper pin shafts, the moving assemblies facilitate moving of the sliding tables, the rear ends of the far sides of the sliding tables are hinged to lower mounting plates, and the interiors of the lower mounting plates are rotationally connected with a plurality of lower supporting wheels through a plurality of pins. And two upper rubber cushion blocks are fixedly connected to the right end of the top side of the sliding table. According to the utility model, the rolling bodies are respectively arranged on the two sides of the hinge point of the mounting plate, so that the gap between the sliding table and the guide channel can be changed when the angle of the sliding table and the mounting plate is changed, the sliding table cannot be clamped in the moving process, and the working efficiency and the continuity are further improved.
Owner:LUOYANG XINBANG TECHNOLOGY CO LTD +3

Construction method of vertical shield tunneling system with annular multi-machine head cutting

A vertical shield tunneling system with circumferential multi-head cutting and its construction method are disclosed. This relates to the field of underground engineering. This method excavates only the soil and rock within the annular shaft wall, avoiding full-face excavation, and can temporarily or permanently retain the central soil. The equipment has a compact structure, low installed power, distributed power, and low carbon emissions, reducing energy consumption. It requires less excavation work, is safer and more efficient, reduces mud and slag discharge, and is environmentally friendly. The use of hollow segments reduces the weight of individual segments, lowers the requirements for hoisting equipment, and enhances the active anti-buoyancy resistance during segment sinking. Utilizing cutting edge box assemblies matched to the vertical shield, segments are assembled while excavating in an annular pattern, forming a point-matrix annular excavation, prefabricated box-shaped segment overall advancement, stable box wall support, and retention of central soil excavation mode. This significantly expands the breadth and depth of shaft construction, improves construction efficiency, and reduces construction costs. By changing the shape of the cutting edge box assembly, shaft excavation with circular, rectangular, and other cross-sectional shapes can be achieved.
Owner:GUANGZHOU GOLDEN EARTH GEOTECHNICAL ENG TECH CO LTD +1