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1930results about "Rotary drilling" patented technology

Coal mine intelligent directional drill and drilling method therefor

The present invention relates to a coal mine intelligent directional drill and its drilling method, belonging to the technical field of coal mine drills. It comprises a moving platform, machine frame, clamper, main manipulator, power head, drill pipe storage system, control system, and hydraulic system. The power head structure is improved by adding an angle adjuster with accurate angle adjustment, locking, and anti-rotation functions. The angle adjuster is positioned on the gearbox side opposite the main motor, connected via a driving shaft. The control system includes a toolface azimuth detection and initialization system that works with the angle adjuster. This solves prior issues such as the absence of specialized toolface azimuth adjustment devices, low precision, low track adjustment efficiency, and challenges in achieving automatic directional drilling in the prior art. The invention enhances precision and efficiency, enabling automated, intelligent directional drilling.
Owner:CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD

A drill head for use with microtunneling apparatus

This invention relates a drill head (4) for use with a microtunneling apparatus (1) having a cutter bar (12) that is rotatable to produce swarf in a working zone. The drill head (4) includes a movable imaging device (46) that is adapted to capture images in the working zone (13). The imaging device (46) is adapted to move from a position within an annular shell (11) to a position external from the annular shell (11).
Owner:OPTIONX HOLDINGS PTY LTD

Microtunneling apparatus

This invention relates to a reamer assembly (6) for enlarging a substantially horizontal pilot hole (14) in the ground to produce a bore hole (18), including a cutter (21) which is rotatable about an axis X-X. A gear box (20) is positioned on a first side of the cutter (21) for interacting with a drive shaft (33) which is rotated about the axis X-X by a drive apparatus (2) outside the pilot bore hole (14) and a body (15) positioned on a second side of the cutter (21) for transferring thrust from a thrust apparatus (4) outside of the enlarged bore hole (18) to the cutter (21).
Owner:OPTIONX HOLDINGS PTY LTD

Microtunneling apparatus

This invention relates to a drill string (32) for use with micro tunnelling apparatus (1) having a cutter (21) at a distal end of the drill string (32) and external drive mechanism (2) at a proximal end of the drill string (32). The drill string (32) being formed by a plurality of connected string segments (13), each string segment (13) with a drive shaft (33) aligned along the central axis for rotation there about and an elongate casing (34) that houses the drive shaft (33). The front end of one string segment (13) is adapted to connect with the back end of another string segment (13) to form the drill string (32) by way of a latch connection, the latch connection being adjustable so as to vary the tolerance between said front end of one string segment (13) and said back end of another string segment (13) while connected.
Owner:OPTIONX HOLDINGS PTY LTD

Gold mine exploiting and blasting automatic hole opening device and hole opening method of gold mine exploiting and blasting automatic hole opening device

The invention relates to the technical field of mining machinery, in particular to a gold mine mining blasting automatic trepanning device and a trepanning method.The gold mine mining blasting automatic trepanning device comprises a base plate, the base plate is an assembly carrier of the drilling device and can be externally connected with an engineering vehicle or an engineering mechanical arm, a mounting frame is fixedly mounted on the base plate, and the mounting frame is a frame body with an opening in the top; the guide frame is fixedly arranged at the top of the mounting frame, and the guide frame is an annular frame body internally provided with a clamping groove; the gear ring is rotationally mounted in a clamping groove in the guide frame; and the rotating frame is fixedly arranged in the gear ring. By means of the spiral blades on the drill rod, fragments generated in the drilling process are synchronously pushed out, the situation that the fragments are accumulated near the drill bit to affect efficiency is prevented, meanwhile, cooling water is allowed to enter a drilling area through the arrangement of the flow guide through hole and the connecting pipe in the drill bit, the fragments are helped to be flushed out of the hole, and the drilling efficiency is further improved.
Owner:QINGHAI SHANJIN MINING

Anti-jamming coal mining drilling machine with drilling and multi-directional impact functions and use method of anti-jamming coal mining drilling machine

The invention discloses an anti-jamming coal mining drilling machine with drilling and multidirectional impacting functions and a using method thereof.The anti-jamming coal mining drilling machine comprises a drilling machine body, a high-pressure driving mechanism is arranged on the drilling machine body through a multidirectional guide rail mechanism, and a drilling assembly is connected with the high-pressure driving mechanism; when the drilling machine works, the high-pressure driving mechanism drives the drill rod and the drill bit to conduct rotary drilling, the high-frequency transverse vibration mechanism synchronously generates transverse high-frequency vibration, the high-pressure driving mechanism drives the drill rod and the drill bit to conduct rotary drilling, and the high-frequency transverse vibration mechanism drives the drill rod and the drill bit to conduct rotary drilling. The friction force between the drill bit and rock is reduced, debris accumulation is prevented, efficient deslagging is achieved, when hard rock or drill jamming occurs, the longitudinal vibration impact mechanism triggers longitudinal vibration, impact and drill jamming prevention functions are achieved through cooperative work of transverse vibration and longitudinal vibration, the drill jamming problem under the complex geological condition is effectively solved, the drilling efficiency and equipment reliability are improved, and the drilling cost is reduced. The device is suitable for drilling operation of mining roofs and baseplates, sides and the like.
Owner:HUATING COAL GRP CO LTD +2

Rock drilling and sampling device for highway construction

The invention belongs to the field of rock-soil drilling equipment, and discloses a highway construction rock drilling sampling device which comprises a rack, a sampling device and a sampling device, the drill rod assembly is arranged on the rack and comprises an inner shaft rod and an outer sleeve rod, and the inner shaft rod is rotationally sleeved with the outer sleeve rod; the first driving mechanism at least drives the outer sleeve rod to rotate; and the drill bit assembly is connected with the drill rod assembly. Through the drill rod assembly and the drill bit assembly, a sampling component and a drilling component of the drill bit assembly are matched with a limiting tooth part through a movable ratchet assembly, state switching of the sampling component and the drilling component can be achieved, and when the drilling component is reversely screwed out after drilling, a movable tightening piece can be driven to move by rotating relative to the sampling component; and the movable tightening part of the sampling component can tighten and clamp the sample, so that the friction force in the sampling process can be increased, the sample is not easy to fall off, the structure is simpler, and the operation is easy.
Owner:SICHUAN COMM SURVEYING & DESIGN INST CO LTD

Drilling equipment for tunnel engineering construction

The invention belongs to the technical field of tunnel engineering, and particularly relates to drilling equipment for tunnel engineering construction, which comprises a drill rod, a driving part and a feeding part, the driving part and the feeding part are connected with the drill rod, and a dustproof deslagging unit is further arranged on the drill rod and comprises a blocking cover, a sleeve, a transmission structure and a shifting plate. The blocking cover is of a hemispherical groove structure, and a discharging opening is formed in the side wall of the blocking cover; one end of the sleeve is inserted into the bottom wall of the anti-blocking cover, the sleeve and the anti-blocking cover are rotationally connected, and the drill rod is inserted into the sleeve in a penetrating mode; the transmission structure is arranged between the inner wall of the sleeve and the side wall of the drill rod. The transmission assembly is used for driving the sleeve to rotate in the feeding process of the drill rod. And the shifting plate is fixedly connected with the sleeve and is used for rotating in the anti-blocking cover under the driving of the sleeve. According to the device, dust and disintegrating slag generated in the drilling process of the drill rod can be collected and continuously discharged, accumulation of the dust and the disintegrating slag is effectively avoided, and the protection performance of the drill rod is improved.
Owner:XIAN TECH UNIV +2

Embedding device for pore pressure sensor

The invention discloses an embedding device for a pore pressure sensor, and relates to the technical field of pore pressure sensor embedding, the embedding device comprises a drill hole cleaning mechanism and a first mounting ring mounted at the bottom of the drill hole cleaning mechanism, a cleaning mounting mechanism is arranged on the outer side of the drill hole cleaning mechanism, and a lifting support is arranged at the top of the cleaning mounting mechanism; the drilling cleaning mechanism comprises a fixing ring, first rotating supports are symmetrically installed on one side of the top of the fixing ring, first rotating motors are fixedly installed on the outer sides of the first rotating supports, and the output ends of the first rotating motors are fixedly connected with first rotating worms. A conveying motor is started to drive a conveying rotating rod and a conveying spiral blade to rotate, soil and stone generated by drilling are conveyed into a collecting box by utilizing the structural characteristics of the conveying spiral blade, a cleaning scraper is driven by a drilling conveying cylinder to rotate, and the conveyed soil and stone can be collected and discharged through a blow-down valve.
Owner:XIAN KANGTUOLI INSTRUMENT EQUIPMENT CO LTD

A mining blasting drilling device

The present invention discloses a mining blasting drilling device, which comprises a frame, a drilling machine top, a positioning frame, and a slide. A retractable cabin is installed on the frame, a pulling rope is led downward from the side bottom of the retractable cabin, a retractable shaft is installed in the retractable cabin, and the retractable shaft rotates to control the length of the pulling rope led to the outside of the retractable cabin. A driving cabin is installed at the bottom of the drilling machine top, and a lifting seat is installed in the driving cabin. A positioning plate is hingedly installed at the end of the positioning frame. The lifting seat descends and pushes the positioning frame to rotate outward, so as to drive the positioning plate to move outward and fit against the inner wall of the drilled hole. The lifting drive assembly can push the slide and drill rod downward and cooperate with the rotation of the drill rod to complete downward drilling. In the present invention, the pulling rope is gradually retracted and extended, so that the drilling structure penetrates deep into the hole. The entire hole is drilled through multiple descents and drillings. The depth of the drilling is not limited by the length of the drill rod, and the drilling depth can be directly controlled by the pulling rope, thereby improving the efficiency of the entire drilling process.
Owner:JCC YINSHAN MINING CO LTD

Split type mountain drilling machine

The utility model provides a split mountain drilling machine which comprises a first module, a second module and a remote gas conveying pipe, and the first module and the second module are arranged in a split mode; the first module comprises a hydraulic submodule and a power head assembly which are connected, the hydraulic submodule is used for conveying hydraulic oil to the power head assembly, and the power head assembly is used for driving a drill rod; the second module comprises an air compressor sub-module, the air compressor sub-module is connected with the first module through a remote air conveying pipe, and the air compressor sub-module is used for remotely conveying compressed air to the power head assembly. Through the arrangement, when drilling operation is carried out, after the first module is carried to a drilling operation point, the second module does not need to be carried to the same position along with the first module, the drilling operation can be smoothly carried out by remotely conveying compressed air to the first module through the second module, and the moving distance of the second module is greatly reduced; and personnel allocation for drilling operation can be reduced, single well consumption is reduced, and the drilling working efficiency is improved.
Owner:CHINA NAT PETROLEUM CORP +1

Straddle seat pit launch directional drill

Disclosed are small model pit launch horizontal direction drills suitable for drilling a substantially horizontal bore hole and laying pipe underground from within a surface dug pit. The devices comprise a stationary frame and a carriage component competent to move forward and back along the frame and drill and retrieve an attached drill stem through an aperture in the frame. The carriage components are configured to allow an operator to straddle the carriage and operate the device from a seated position within the frame component interior.
Owner:RODDIE INC

Hydraulic control and hydraulic drive coiled tubing tractor

The invention provides a hydraulic control and hydraulic drive coiled tubing tractor. The problems that an existing tractor is complex in structure and low in control stability are solved. The first piston cylinder, the second piston cylinder and the third piston cylinder are sequentially arranged on the center pipe in the length direction of the center pipe. Connecting rod supporting mechanisms are arranged at the ends, away from the second piston cylinder, of the first piston cylinder and the third piston cylinder, and the first piston cylinder and the third piston cylinder are used for controlling the two connecting rod supporting mechanisms to be folded and unfolded alternately; the first piston cylinder and the second piston cylinder are installed on the center pipe, the third piston cylinder is installed on a piston rod of the second piston cylinder, a hydraulic control driving assembly used for controlling the first piston cylinder, the second piston cylinder and the third piston cylinder to move is installed on the outer wall of the center pipe, and a drilling fluid inlet is formed in the side wall of the center pipe and communicated with the liquid inlet end of the hydraulic control driving assembly. The single telescopic hydraulic cylinder is adopted, the traction period is shortened, the traction speed is increased, meanwhile, only the pressure of drilling fluid needs to be controlled in the traction process of the tractor, and the system operation stability is high.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Pavement hole forming device for urban road construction

The invention discloses an urban road construction pavement hole forming device which comprises an equipment frame and a moving frame located in the equipment frame, a pushing mechanism matched with the moving frame is arranged on the equipment frame, a drilling mechanism is arranged in the moving frame, and a cleaning mechanism is arranged on the drilling mechanism. The invention relates to the technical field of road construction. According to the pavement hole forming device for urban road construction, a third hydraulic telescopic rod is controlled to extend to push a protection box to move downwards, the protection box can drive a rotating rod and a spiral drilling piece to move downwards, meanwhile, a motor is controlled to drive the rotating rod to rotate, the rotating rod drives the spiral drilling piece to rotate, and the spiral drilling piece rotates downwards to drill the ground; and soil in the hole enters the soil guide cylinder and overflows upwards, and the overflowed soil falls into the annular cylinder, so that the soil in the hole can be well collected, the soil is effectively prevented from flowing back into the hole, manual cleaning is not needed, and cleaning is convenient.
Owner:HUNAN SANJIANG ROAD & BRIDGE ENGINEERING CO LTD

Drilling and cutting head, drilling and cutting device, gob-side entry retaining slotting method and roof cutting pressure relief method

The invention discloses a drilling and cutting head, a drilling and cutting device, a gob-side entry retaining slotting method and a roof cutting pressure relief method, and belongs to the technical field of mine drilling and cutting. The drilling and cutting head comprises a vehicle body, a drilling rod and the drilling and cutting head, and the vehicle body is rotationally provided with a drilling rod conveying driving mechanism through a connecting base and a rotary table; a water cutting system is further installed on the vehicle body. The drilling and cutting head comprises a mounting seat, a plurality of drill bit seats and drill bit blocks, an inner cavity is formed in one end of the mounting seat, and mounting holes are formed in the side wall of the mounting seat; a spray hole is formed in the middle of the spray head. And the end part of the inner cavity of the drilling and cutting head is connected with the head drill rod. Through one device, two operation procedures of drilling and water cutting can be achieved, high efficiency of the gob-side entry retaining slotting method and the top cutting pressure relief method can be achieved, the device cost is effectively reduced, the device can be flexibly and conveniently used in a roadway, the operation efficiency is effectively improved, and the device cost is reduced.
Owner:LIAONING AIRE ELECTROMECHANICAL TECH CO LTD

Perpendicular disturbance grouting vertical drilling and grouting all-in-one machine in subway tunnel hole and technological method

The invention relates to the field of tunnel engineering, and discloses a vertical drilling and grouting all-in-one machine for micro-disturbance grouting in a subway tunnel hole and a technological method.The vertical drilling and grouting all-in-one machine comprises a base used for supporting the whole device, a sliding rail is installed on the inner wall of the base, and a supporting frame is installed at the end, close to the center line of the base, of the sliding rail; a drilling and injecting mechanism is arranged on the outer wall of the sliding rail, and a sealing assembly is arranged on the upper surface of the base. The drilling and injecting mechanism comprises a sliding frame, the sliding frame is slidably connected to the outer wall of the sliding rail, the front surface of the sliding frame is fixedly connected with a supporting plate, the lower surface of the supporting plate is rotatably connected with a drilling rod, and the lower end of the drilling rod is in threaded connection with a connector. According to the drilling and grouting device, the drilling and grouting mechanism is arranged, the hollow drill rod is adopted for drilling, during grouting operation, drilling operation can be achieved through rotation of the drill rod, then the drill rod can be directly connected with grouting equipment, and therefore grouting can be achieved through the drill rod directly.
Owner:WUHAN METRO BRIDGE & TUNNEL MANAGEMENT CO LTD +1

Drilling rig for geological exploration

The invention provides a drilling rig for geological exploration, and relates to the technical field of drilling, the drilling rig comprises a motor mounted on a lifting frame, the extending end of the motor is connected to an inner rod, an outer wheel is coaxially arranged outside the inner rod, a plurality of fixing rods are arranged at the upper end of the outer wheel at equal intervals, and the fixing rods are connected to the inner rod. The drilling device has the most prominent advantage that the drilling device has a unique anti-jamming protection mechanism, when a sampling pipe is jammed by a hard stratum or foreign matters in the drilling process, the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism, and the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism, so that the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism. Power transmission between the motor and the sampling pipe is not rigid connection any more, controlled separation is achieved through a designed combination of a gear system and a friction disc, the motor continues to operate, but not all torque is directly transmitted to the clamped sampling pipe, part of energy is converted into surrounding motion through a rotating wheel system, and therefore the sampling pipe can be separated. And the risk of burnout of the motor due to overload is effectively avoided.
Owner:INNER MONGOLIA GAOERQI MINING CO LTD

Combined sand drain drainage structure suitable for high slope and construction method of combined sand drain drainage structure

The invention provides a combined sand drain drainage structure suitable for a high slope. The combined well drainage structure comprises a row of vertical sand well structures arranged in the side slope along the slope surface line of the side slope and siphon drainage structures arranged at the bottom ends of the row of vertical sand well structures. The vertical sand well structure comprises a vertical well hole, a water permeable pipe and a gravel inverted filter layer, and the water permeable pipe is filled with gravel; the siphon drainage structure comprises a siphon water guide pipe, a horizontal drainage well structure and an inclined drainage pipe. Rainwater of the high slope is collected through the sand wells, the rainwater is collected into the horizontal drainage wells under the action of gravity, underground water collected by the horizontal drainage wells is drained from the drainage holes in the lowest end of the supporting structure through the siphon guide pipes, then negative pressure is generated in the horizontal drainage wells, and drainage of the vertical sand wells is further accelerated. The construction difficulty of the deep drainage structure of the high slope is reduced, and it is guaranteed that underground water enriched under the effects of rainfall, underground pipeline water leakage and the like can be drained in time and rapidly.
Owner:WUHAN SURVEYING GEOTECHN RES INST OF MCC

Soil sampling device for drilling

The invention relates to a soil sampling device for drilling, which comprises an outer drill rod, a sampling rod, an outer sampling pipe, a sampling drill bit, a sealing pipe, a sealing sleeve, an elastic binding belt, a cutting rod and the like, and is characterized in that the foldable sealing sleeve is gradually unfolded along with the entering process of a soil sample, and then the elastic binding belt is tightened to realize effective sample sealing; the overturning type cutting-off rod is driven by the sampling drill bit to evenly cut off a soil sample, disturbance is reduced, the sliding groove is formed between the sealing pipe and the guide rod to prevent mutual rotation, sealing liquid can be provided for the drill bit and the drill block through the through hole, abrasion is reduced, external pollution is blocked, and the device is compact in structure, convenient to install and disassemble, high in sampling efficiency and good in sample integrity. The method is suitable for the fields of geotechnical engineering investigation, environment monitoring and the like.
Owner:SICHUAN TIANYUAN HONGCHUANG MECHANICAL & ELECTRICAL EQUIPMENT CO LTD

Intelligent directional device for full rotation of drill string

An electronically controlled full rotary clutch controller includes a drive assembly, an executive assembly and an auxiliary assembly. The device can have two working states: directional drilling and compound drilling. When compound drilling, drilling parameter information is obtained through the main control board, and the data is fed back to a ground processing system, which transmits a control signal to the main control board. The main control board controls a rotating motor, and pushes a screw sleeve and a push block shaft on a ball screw. The push block shaft pushes a push block radially, and a mandrel shell transmits torque to a roller shell through the push block. The roller shell and the mandrel shell rotate together to realize compound drilling. When directional drilling, the main control board reverses the rotary motor, the push block shaft pulls the push block radially, and the roller shell does not rotate.
Owner:SOUTHWEST PETROLEUM UNIV +1

Wrapped pile drilling and filling all-in-one machine

The utility model discloses a wrapped pile drilling and filling all-in-one machine which comprises a foundation mechanism and an executing mechanism, and the executing mechanism is connected to the foundation mechanism in a lifting mode. The basic mechanism comprises a power assembly, a walking assembly, a stand column and a supporting assembly, the stand column is arranged on one side of the walking assembly in a supported mode and supported through the supporting assembly, and the power assembly is arranged on the walking assembly and used for lifting the executing mechanism; the executing mechanism comprises a drilling assembly and a sleeve, the drilling assembly is arranged on the sliding rail of the stand column in a sleeving mode, and the drilling assembly is sleeved with the sleeve in a liftable mode; the power assembly comprises a main winch and an auxiliary winch. The all-in-one machine is suitable for treating mucky soil and soft plastic clayed soil foundations with undrained shear strength smaller than 20 kPa, and is particularly suitable for punching and pouring construction of saturated salinized soil foundation wrapped piles.
Owner:SHAANXI CHANGJIA CONSTR ENG CO LTD

In-situ coring system and method for soft rock extension roadway bottom plate

The invention discloses an in-situ coring system and method for a soft rock extension roadway bottom plate. The system comprises a stable anchoring base, a drilling driving and propelling module, a stress adjusting module, a low-disturbance coring module, a rock core in-situ packaging and fidelity module and an intelligent integrated control unit. The stable anchoring base is used for fixing the system on a roadway bottom plate; the drilling driving and propelling module provides rotating power and axial feeding force for the drilling tool; the stress adjusting module is used for adjusting the stress state around the rock core; the low-disturbance coring module comprises a composite function coring drill bit and a double-layer coring pipe, and low-disturbance cutting and containing of a rock core are achieved. The rock core in-situ packaging and fidelity module is used for sealing and packaging the rock core in real time; and the intelligent integrated control unit adaptively controls the coring process according to sensor data. According to the invention, low-disturbance, high-precision and in-situ fidelity rock core acquisition of the soft rock roadway bottom plate can be realized, and the problems of large soft rock coring disturbance, difficulty in fidelity, low intelligent degree and the like are effectively solved.
Owner:XINWEN MINING GRP (ILI) ENERGY DEV CO LTD +1

Gyrator for coal mine directional drilling machine and using method

The invention relates to the technical field of coal mine underground drilling equipment, in particular to a gyrator for a coal mine directional drilling machine and a using method.The gyrator comprises a shell, an input shaft and an output shaft, the shaft extension end of the output shaft is provided with a pressure balance type multiple dynamic sealing system, and the sealing system comprises a main sealing unit, a pressure balance unit and a dustproof sealing unit; the pressure balance unit comprises a sealing cavity, a lubricating grease injection channel and a grease injection nozzle; pressure lubricating grease is injected into the sealing cavity through the grease injection nozzle, so that a dynamic positive pressure barrier higher than the internal medium pressure of the gyrator and the external pressure of the environment is formed in the sealing cavity; through a triple sealing structure formed by combining the spring seal main seal, the pressurization balance cavity and the V-shaped dustproof ring and by combining an active injection and dynamic balance using method, passive blocking of traditional sealing is converted into active defense, the problem of invasion of high-pressure slurry and pulverized coal is effectively solved, and the service life of the sealing device is prolonged. And the working reliability and the service life of the equipment are obviously improved.
Owner:SHAANXI XUNYI QINGGANGPING MINING CO LTD +1

Ore component detection device

The invention relates to the technical field of ore composition detection, and discloses an ore composition detection device which comprises a base, a sliding frame is fixedly assembled at the top of the base, a sliding block is slidably connected to the inner wall of the sliding frame, a rotating bottom plate is rotatably connected to the inner wall of the sliding block, and a round rod is fixedly assembled at the top of the rotating bottom plate. The outer edge of the round rod is sleeved with a cylinder in a sliding mode. The side face of a sliding block slides on the inner wall of a sliding frame to assist a fixing frame in height adjustment, the bottom of a storage barrel and the bottom of a partition barrel are in lap joint with the bottom of the inner wall of an outer drilling barrel, the outer drilling barrel drives a drill bit to move downwards, and therefore the inner wall of the drill bit slides upwards on the outer edge of the bottom of the outer drilling barrel; gas in an auxiliary containing cavity passes through a gas inlet cylinder to a clamping cylinder, so that a clamping frame and a rolling shaft are pushed to limit a storage cylinder, when a drill bit moves upwards, an adjusting gear is pushed through a square rod and an L-shaped toothed plate to drive a material guide plate to rotate, and an arc-shaped guide rod assists in guiding crushed mineral aggregate into the storage cylinder.
Owner:YANTAI ZHONGJIA MINING CO LTD

Deformation control method for double-line shield tunnel underneath passing existing railway soft soil roadbed

The invention relates to the field of underground engineering and rail traffic engineering, in particular to a deformation control method for a double-line shield tunnel to underpass an existing railway soft soil roadbed, which comprises the following steps: S1, determining a grouting reinforcement range; s2, pile position and grouting hole position lofting is conducted in the reinforcing area, and a groove is excavated; s3, construction is conducted after the MJS pile main machine is in place, and drill bit trial spraying is conducted before a drill rod is placed; s4, after the drill rod reaches the specified depth, jet grouting is conducted till the designed elevation is reached, and the MJS pile main machine is moved to the next pile position sample placing point; s5, after the MJS pile reaches the designed strength, a drilling machine is arranged in place, and a formed hole is drilled to the designed depth; and S6, grouting is conducted, and then grouting and grout stopping section construction is conducted. The method has the advantages that corresponding reinforcement measures are taken in combination with the model, the shear strength of the soft soil is improved, the shear damage risk of the soft soil is reduced, deformation of the soft soil roadbed is controlled in time, and safety and stability in the shield underneath pass construction process are ensured.
Owner:HUAHAI ENG CO LTD OF CREC SHANGHAI +3

Ore body positioning method for prediction and evaluation of niobium-tantalum ore target region and rapid sampling device

The invention belongs to the technical field of geological prospecting evaluation, and discloses an ore body positioning method and a rapid sampling device for niobium-tantalum ore target region prediction and evaluation. According to the method, based on existing geological data, various geologic bodies in a 1: 250,000-1: 10,000 geological map are analyzed, distribution, form, invasion contact relation, formation times and other characteristics of alkaline rock masses are found out, and a favorable metallogenic area is delineated; a linear structure, an annular structure and alteration information are recognized through satellites and aerial images, and target area positioning is assisted; the method comprises the following steps: exploring and detecting ore-bearing rock mass and fracture structures through a magnetic method, delineating potential positions of ore bodies, and inferring geological attributes of abnormal sources in combination with geological data; measuring the total amount of gamma at different positions in the niobium-tantalum prediction target area by using radioactive detection equipment, and preliminarily judging the position of the niobium-tantalum ore according to a gamma abnormal result; and carrying out systematic sampling and assay analysis on the target area by using the rapid sampling device. By means of the method and device, the metallogenic geological condition and the prospecting prospect can be evaluated, and the exploration network degree is optimized.
Owner:THE 4TH GEOLOGICAL BRIGADE OF SICHUAN

Coal mine drilling machine with drill bit convenient to replace

The invention relates to the technical field of drilling machines, and discloses a coal mine drilling machine with a drill bit convenient to replace, which comprises a main machine, a limiting seat is arranged on one side of the main machine, a shaft rod is fixedly butted to the output end of one side, close to the limiting seat, of the main machine, and a screw is fixedly connected to one end, away from the main machine, of the shaft rod; a telescopic rod is slidably connected to the side, close to the limiting seat, of the metal drill bit, a limiting ring is fixedly connected to the end, away from the metal drill bit, of the telescopic rod, a gear ring is fixedly connected to the side, close to the metal drill bit, of the limiting ring, a bearing is rotatably connected to the side, close to the metal drill bit, of the limiting seat, and a mounting rod is rotatably connected to the side, close to the gear ring, of the limiting seat. According to the coal mine drilling machine with the drill bit convenient to replace, the problem that when the drill bit just completes drilling work, the temperature of the drill bit is high, so that the drill bit cannot be replaced in time, and the drilling work efficiency is affected can be solved.
Owner:徐州市苏文机械设备制造有限公司

Rock-soil exploration self-adaptive drilling device based on modular design

The invention discloses a rock-soil exploration self-adaptive drilling device based on modular design, and relates to the technical field of drilling, the rock-soil exploration self-adaptive drilling device comprises a drill bit, a plurality of rotating shafts are rotationally connected to the drill bit, cones are arranged on the rotating shafts, the rock-soil exploration self-adaptive drilling device further comprises a displacement assembly, the displacement assembly comprises guide grooves formed in the cones, the rotating shafts are in sliding connection with the guide grooves, and the displacement assembly is arranged in the guide grooves. The displacement assembly is arranged on the rotating shaft and used for driving the cone to deviate, the crushing assembly is arranged on the rotating shaft in a sliding mode and used for crushing obstacles, the crushing assembly comprises a push rod connected with the rotating shaft in a sliding mode, an ejector rod is fixedly connected to the push rod, and the power assembly is arranged between the displacement assembly and the crushing assembly. The power assembly is used for driving the crushing assembly to slide back and forth, the power assembly comprises a power wheel rotationally connected with the rotating shaft, and when the power wheel rotates, the power wheel drives the push rod to move back and forth through the ejector rod; when the drill bit is clamped, rock soil can be crushed in a self-adaptive mode, and meanwhile abrasion of the drill bit is reduced.
Owner:ZHENGZHOU UNIV +1

Penetrator system for electrical submersible pumps

The present disclosure relates to a wellhead penetrator system comprising a penetrator body comprising a hollowed cylindrical frame connecting a top end to a bottom end; a cable seal located within the penetrator body, comprising: a cylindrical core made of a polymer having three cylinder-shaped port holes configured to each provide a path for of the three insulated electrical wires; a top side, wherein the port holes extend upward from the top side of the cable seal; and a bottom side facing into the cavity located in the bottom end of the penetrator body, wherein the port holes extend downward from the bottom side of the cable seal; and a follower comprising a cylindrical metal body and cylindrical holes, wherein the follower seats against the bottom side of the cable seal so that port holes of the cable seal protrude through the cylindrical holes of the follower.
Owner:SONIC CONNECTORS LTD

Drilling machine hole forming method suitable for different rock stratums

The invention relates to the field of pore-forming control, and particularly discloses a drilling machine pore-forming method suitable for different rock stratums, comprising the following steps: S1, acquiring stratum data; s2, obtaining different rock stratum distribution data of the operation area according to the stratum data, and constructing a three-dimensional geologic model; s3, according to the three-dimensional geologic model, simulating to obtain an optimal drilling path without damaging the ground; s4, simulating an interaction mechanism of the drill bit and different rock stratums according to the optimal drilling path to obtain working parameters of the drill bit with the optimal hole forming quality in the different rock stratums; and S5, the working parameters of the drill bit in the different rock stratums are input into a control system of the jumbolter, and the control system adjusts the drill bit to the matched working parameters according to the data of the different rock stratums. The method can greatly improve the hole forming quality of the weathered rock stratum, improve the construction progress and reduce the engineering cost.
Owner:BEIJING VIBROFLOTATION ENG