1967results about "Drilling machines and methods" patented technology

The present invention belongs to the technical field of anchor protection apparatuses. Provided is an automatic anchor protection platform having combined support of anchor rods and anchor cables. The automatic anchor protection platform comprises a movable chassis, a multi-cycle anchor rod drilling rig, an anchor rod drilling rig posture positioning control device, an anchor cable support device, a temporary support device, an electrical system and a hydraulic system. Said automatic anchor protection platform integrates the multi-circle anchor rod drilling rig, the anchor cable support device and the temporary support device, and therefore meets the anchoring and support requirements of roadways under different geological conditions, allows anchor rod and anchor cable parallel support operations to be conducted at the same time, and achieves efficient coordinating matching linkage integrated design, thus further promoting efficient operation processes in limited spaces such as coal mines and tunnels.

The invention relates to a coal seam extraction drilling air bag type memory metal net cover hole collapse prevention device and method, the device comprises an I-type air bag net cover installation unit body, a plurality of II-type air bag net cover installation unit bodies and an inflator pump, an exhaust pipeline is provided with an exhaust control valve, a hole wall is supported through a memory metal net cover, and the air bag net cover installation unit body and the inflator pump are arranged in the hole wall; the memory metal net sleeves can be matched with drill holes with different hole diameters in a self-adaptive mode and can be repeatedly used, the configuration number of the memory metal net sleeves can be greatly reduced, and therefore the processing cost of hole collapse prevention is further reduced; the installation of the memory metal net sleeve is directly controlled by the expansion of the air bag, so that the memory metal net sleeve can be quickly unfolded and reliably contacted with the hole wall; the removal of the memory metal net sleeve is directly controlled by temperature control gas, so that the memory metal net sleeve retracts to an initial state at the recovery temperature and is separated from the hole wall; the mounting and dismounting process of the memory metal net cover has the advantages of being simple, efficient and easy to operate, and the construction efficiency can be further improved.

The present invention relates to the technical field of underground coal mine excavation supporting devices, and in particular to a single-arm wheeled bolt and anchor cable drilling jumbo for a coal mine. The drilling jumbo comprises a wheeled chassis, a multi-degree-of-freedom working arm, and an airborne automatic drilling rig; the wheeled chassis carries the whole drilling jumbo; a main structure is divided into a front frame and a rear frame; one end of the multi-degree-of-freedom working arm is fixedly connected to the tail of the rear frame, and the other end of the multi-degree-of-freedom working arm is connected to the airborne automatic drilling rig and has a plurality of motion degrees of freedom relative to the rear frame; the plurality of motion degrees of freedom constitute two-stage fine tuning acting on the airborne automatic drilling rig; the first-stage fine tuning positioning is achieved by lifting / lowering, left and right swinging, extension and retraction, and rotation of the working arm; the second-stage fine tuning positioning is achieved by left and right swinging, forward and backward folding, and vertical lifting / lowering of a leveling swing mechanism; large-range adjustment of the airborne automatic drilling rig is achieved by means of cooperation of the plurality of motion degrees of freedom, and the requirements of full-section roof, side, and floor bolting are met; and the present invention replaces a traditional mode in which a hand-held pneumatic bolt drilling rig and an existing bolt and anchor cable drilling jumbo are manually operated to perform supplemental bolt and anchor cable installation.

The invention provides a reverse-circulation large-diameter binding type down-hole hammer reamer bit and a slag discharging method. The reverse-circulation large-diameter binding type down-hole hammer reamer bit specifically comprises a drill bit shroud, an air distribution chamber, a central pipe combination, a down-hole sub hammer and a slag suction opening, wherein the slag suction opening is formed in the bottom of a central pipe and used for sucking crushed rock slag into a drill rod through negative pressure so as to discharge the rock slag. For bedrock large-diameter water-containing stratum reaming drilling, the unique slag suction opening is formed in the bottom of the center pipe, tail gas of the down-the-hole hammer forms entrainment airflow to push liquid in a drill hole to return to the ground surface from the slag suction opening, and the stable continuous reverse circulation slag discharging effect is achieved by means of gas lift water level rising of tail gas pressure of the down-the-hole hammer; and the drilling efficiency of the large-diameter binding type down-the-hole hammer is improved, and the stable and continuous deslagging effect is extremely good in construction application.

The invention relates to the technical field of mine underground equipment, in particular to crawler-type high-gas coal seam drilling equipment based on a double-channel drill rod, which comprises a walking chassis, the double-channel drill rod, a hydraulic slotting system and a negative pressure deslagging device. Crawler-type composite drilling equipment is provided, process integration is carried out through breakthrough of three core technologies, directional drilling (a diamond drill bit and a spiral groove drill rod), hydraulic slotting and negative pressure deslagging are integrated into single equipment, the working procedure switching time is shortened, synchronous slotting and deslagging operation is achieved through a double-channel drill rod, and the working efficiency is improved. The problems of energy consumption and blockage are solved; and meanwhile, gas accidents are prevented.

The invention discloses a half coal rock digging and anchoring all-in-one machine, and relates to the technical field of mining devices, the half coal rock digging and anchoring all-in-one machine comprises a pair of rear drill arm parts arranged on a machine body part, and each rear drill arm part comprises a swing oil cylinder III and a rear onboard jumbolter; a recoil force grading detection mechanism is arranged between the swing oil cylinder III and the rear onboard jumbolter; the recoil force grading detection mechanism comprises a recoil force sensor, a first microswitch, a buffer mechanism and a connecting mechanism. By arranging the recoil force grading detection mechanism, recoil force is transmitted to the mounting plate during working, the mounting plate drives the swing oil cylinder plate to act through the connecting mechanism, the connecting plate of the buffer mechanism triggers a first microswitch firstly and then abuts against a recoil force sensor, and grading detection of the recoil force is achieved; the mechanism solves the problem that the angle deflection of the rear onboard jumbolter is caused by the recoil force but is lack of effective grading detection, avoids the risk of compensation failure caused by the fault of a single detection element, and improves the detection reliability of the recoil force.

The trestle comprises a main bridge, a moving seat and a rock drilling mechanism, the main bridge and the moving seat can move longitudinally, the rock drilling mechanism can swing transversely, the main bridge is provided with a passing part allowing vehicles to pass and a longitudinal moving rail allowing the moving seat to move, the longitudinal moving rail is arranged below or on the side face of the passing part, and the rock drilling mechanism is connected with the moving seat. The excavation method comprises the steps that S1, the main bridge walks in place; s2, the front approach bridge moves forwards to be in lap joint with a to-be-excavated step, a protective cover moves to an avoiding position, a moving seat drives a rock drilling mechanism to move forwards, and the rock drilling mechanism conducts shot hole rock drilling on the to-be-excavated inverted arch end face; s3, the rock drilling mechanism and the front approach bridge retreat to the safety area, and the protective cover moves to the front of the rock drilling mechanism; s4, charging and blasting in each shot hole of the inverted arch, and removing slag; and S5, the steps S2 to S4 are executed repeatedly till the whole construction interval of the inverted arch is excavated. The device has the advantages that the structure is reliable, rock drilling and vehicle passing deslagging can be considered, and the construction progress can be improved.

The invention discloses a concentric tube geothermal well structure capable of improving heat exchange efficiency. The concentric tube geothermal well structure comprises a first well opening section and a second well opening section. The first well opening section comprises a first casing pipe, and first well cementation cement is arranged between the inner wall of the first well opening section and the first casing pipe; the second well opening section is provided with a second casing pipe, second well cementation cement and a central casing pipe; a distance is arranged between the second casing pipe and the well wall of the second well opening section, second well cementation cement is arranged between the center casing pipe and the second casing pipe, a water stopping device is arranged at the upper end of the second well cementation cement and is of a reducing structure with the diameter sequentially increased from top to bottom, and the inner wall of the top end of the water stopping device is connected with the center casing pipe. The bottom end of the water stop device is connected with the second sleeve; a packing structure is arranged at the bottom end of the second well cementation cement, and a permeable section is arranged at the lower end of the packing structure. The invention further provides a construction method of the geothermal well structure. The structure is reliable, the heat exchange efficiency is improved, and the industrial long-term operation requirement is met.

The invention discloses a simulation experiment device and method for casing drilling, and relates to an experiment device and method for simulating the smearing effect of casing drilling, and the device comprises a simulation assembly and a manifold assembly. The simulation assembly comprises an experiment kettle, a simulation piece and a casing pipe nipple, and an annular gap is defined between the simulation piece and the casing pipe nipple. The manifold assembly and the annular gap form a flow loop of drilling fluid. The manifold assembly comprises a liquid storage tank, a pump body and a material storage tank, and the pump body and the material storage tank are arranged between the liquid storage tank and the inlet end of the annular gap. Wherein the storage tank can enable the rock debris to enter the annular gap along with drilling fluid pumped by the pump body, and the simulation assembly can enable the casing pipe nipple to rotate at a preset rotating speed under a preset axial acting force under a preset experiment condition, so that the rock debris entering the annular gap forms a mud cake on the inner surface of the simulation piece. The experimental device can be used for analyzing influence factors of the smearing effect of casing drilling and guiding on-site construction of the casing drilling, so that the smearing effect of the casing drilling can play a more remarkable effect.

The invention belongs to the technical field of geotechnical engineering drilling, and particularly relates to an instant pipe-following anti-falling object device for broken stratum drilling, which comprises a drilling machine power head and a drilling rod, a drill bit is arranged at one end of the drilling rod, an inner wall protection sleeve is arranged outside the drilling rod, and the inner wall protection sleeve is connected with the drilling machine power head through a linkage assembly. An outer wall protection sleeve is arranged outside the inner wall protection sleeve, the outer wall protection sleeve and the inner wall protection sleeve are connected through an elastic assembly, a sliding fit clearance cavity is formed between the outer wall protection sleeve and the inner wall protection sleeve, and a sliding guide assembly and a permanent magnet assembly are arranged in the sliding fit clearance cavity; a sensing assembly and a propelling assembly are arranged on the drill rod; according to the device, by integrating the linkage assembly, the elastic assembly, the permanent magnet assembly and the central controller, instant synchronous movement of the wall protection sleeve and the drill bit is achieved, hole wall collapsing objects are effectively blocked, drill burying and drill jamming accidents are completely eradicated, and the construction efficiency is improved.

The invention discloses a reamer electromechanical driving mechanism and method capable of detecting the position state of a blade, and relates to the technical field of tools of petroleum drilling engineering, the reamer electromechanical driving mechanism comprises a power assembly, a lead screw assembly, an ejector rod, a locking assembly, a rotation detector and a displacement detector which are mounted in a drill collar; the power assembly is connected with the lead screw assembly, the lead screw assembly is connected with the ejector rod, the ejector rod is connected with the reamer blade, the power assembly rotates and drives the ejector rod to move up and down through the lead screw assembly, and the ejector rod moves up and down to drive the reamer blade to be unfolded or folded. The locking assembly is assembled on the ejector rod, and after the reamer blade is unfolded in place, mechanical self-locking is conducted on the ejector rod. The rotation detector is assembled beside the lead screw assembly to detect rotation of the lead screw assembly, and the displacement detector is assembled beside the ejector rod to detect up-and-down movement of the ejector rod. The opening and closing state of the cutter wing is measured and uploaded through the rotating detector and the displacement detector, the cutter wing is expanded in place, the underground condition can be judged easily, and controllable multiple reaming is achieved.

The invention relates to the technical field of pile foundation construction, in particular to a long spiral secant pile construction method under water conservancy anti-seepage complex geological conditions, and the construction method comprises the steps that a long spiral pile driver is provided with a first power head and a second power head, a sleeve is pressed downwards through the second power head, and then the first power head is used for driving a drill rod to drill; the sleeve and the drill rod drill down synchronously until the drill bit drills to the elevation of the bed rock surface to form a pile hole; the sleeve is left in the pile hole, the rotary drilling rig is used for drilling the bed rock, a drill rod of the long spiral pile driver is put down to the bottom of the pile hole, concrete is pumped into the pile hole, and when the concrete is poured to the bed rock surface, the drill rod and the sleeve are lifted while the concrete is pumped into the pile hole till pressure pouring is completed. In a complex stratum with a huge thick loose high-permeability sandy gravel covering layer and ultrahigh-strength hard bed rock coexisting, high-precision stable hole forming and collapse prevention are achieved at the same time, hard rock is reliably and accurately drilled to reach the designed depth, and it is ensured that concrete secant piles are tightly engaged to form a continuous and effective diaphragm wall.

The mine rock drilling robot comprises a walking mechanism, a telescopic mechanical arm and a rock drilling mechanism, the walking mechanism comprises an outer supporting frame and an inner supporting frame, first hydraulic supporting legs are vertically fixed to the four corners of the outer supporting frame, and second hydraulic supporting legs are vertically fixed to the four corners of the inner supporting frame; the inner supporting frame is connected to the outer supporting frame through a moving mechanism, and the first hydraulic supporting leg and the second hydraulic supporting leg can be alternately supported or jointly supported to the ground. The telescopic mechanical arm is installed on the inner supporting frame and used for being folded and stored and stretching out to the position below the rock drilling position. The rock drilling mechanism is installed at the end of the telescopic mechanical arm and comprises a rock drilling machine and a stable supporting mechanism, and the stable supporting mechanism is used for abutting against a top and bottom plate of the stope to stabilize the rock drilling machine. The walking mechanism can adapt to the ground shape, and stable movement is guaranteed; the height requirements of different mining faces are met through the telescopic mechanical arm; the stable supporting mechanism is vertically supported on the mine ground and the top of an ore body, and the safety and stability of equipment are improved.

The invention discloses an analysis control method and system for a hydraulic anchor rod drill carriage for a coal mine, and relates to the technical field of mining mechanical equipment, and the method comprises the steps: constructing a sequential temperature sequence, calculating an actual temperature stability characteristic value, and evaluating the stability of the current temperature fluctuation of the drill carriage; constructing a differential pressure sequence, calculating an actual pressure change rate characteristic value, and identifying whether potential abnormality exists in the hydraulic pressure of the drill carriage; the actual temperature stability characteristic value and the actual pressure change rate characteristic value are constructed into an actual drill carriage state characteristic vector, the actual drill carriage state characteristic vector is input into an operation recognition function, a drill carriage operation normal score is obtained, and drill carriage operation evaluation is carried out; and operation parameters of the drill carriage are dynamically regulated. Parameters of a hydraulic system of the drill carriage are regulated by calculating an actual temperature stability characteristic value, calculating an actual pressure change rate characteristic value, constructing an operation recognition function and dynamically regulating and controlling operation parameters of the drill carriage, and therefore it is guaranteed that the operation parameters of the drill carriage can be matched with the hardness of materials at the operation position.

The present invention discloses an anti-collapse hole casing structure for use in the construction of a grouting pile foundation on the alluvial plain of the Yellow River, belonging to the technical field of grouting pile foundation construction. The anti-collapse hole casing structure for use in the construction of a grouting pile foundation on the alluvial plain of the Yellow River comprises a bottom inner tube assembly, a plurality of connecting inner tube assemblies are provided on the top of the bottom inner tube assembly, a bottom outer tube assembly and a connecting outer tube assembly are respectively provided on the outer walls of the plurality of connecting inner tube assemblies, and a plurality of casing connection mechanisms are installed between the bottom inner tube assembly and the plurality of connecting inner tube assemblies, and between the bottom outer tube assembly and the connecting outer tube assembly. The present invention increases the number of connecting inner tube assemblies and connecting outer tube assemblies that can be installed by designing the bottom outer tube assembly and the connecting outer tube assembly, and increases the installation efficiency of the casing by designing the depth of the plurality of connecting inner tube assemblies and the bottom inner tube assembly. During the deepening of the plurality of connecting inner tube assemblies and the bottom inner tube assembly, the entire inner tube only needs to overcome soil friction below the outer tube, thereby improving the efficiency of casing installation.

The invention discloses a construction method for salt cavern slim hole drilling cavity detection and injection and production well transformation. The construction method mainly comprises the six steps of cavity detection operation, packing operation, conduit operation, first-time reaming and well cementation, second-time reaming and well cementation and third-time open hole cavity penetrating operation. Compared with the prior art, the construction method for detecting the salt cavern slim-hole drilling cavity and transforming the injection and production well has the advantages that the drilling cost input is reduced, the working period is shortened, meanwhile, deflection and borehole wall instability are effectively avoided, and the construction safety is improved.

The invention discloses a punching installation device for a water conservancy slope protection anchor rod, and relates to the technical field of punching equipment.The punching installation device comprises a rack and a traction mechanism, walking wheels are arranged at the bottom of the rack, the traction mechanism is used for driving the rack to move along the surface of a slope protection, and a pushing frame is arranged on the rack in a sliding mode; a propelling device used for driving a propelling frame to slide is arranged on the machine frame, a drill rod is rotatably arranged on the propelling frame, the length direction of the drill rod is parallel to the sliding direction of the propelling frame, a first motor used for driving the drill rod to rotate is arranged on the propelling frame, and a fixing structure used for being connected with an anchor rod is arranged on the drill rod. The hydraulic engineering slope protection anchor rod punching device solves the problem that a punching device is inconvenient to move and fix, and the construction efficiency of hydraulic engineering slope protection anchor rod punching installation can be improved.

The invention provides a coal mine crawler-type full-hydraulic underground drill rig, and belongs to the technical field of drilling mechanical equipment, the coal mine crawler-type full-hydraulic underground drill rig comprises a crawler chassis, the upper end of the crawler chassis is provided with a driving mechanism, an angle adjusting mechanism and a height adjusting mechanism, the height adjusting mechanism is provided with a mounting table, and the upper end of the mounting table is provided with a drilling mechanism; the driving mechanism comprises a lifting plate, a rotating shaft is rotatably mounted in the lower end of the lifting plate, and a rotating gear is arranged on the circumferential surface of the rotating shaft; by means of the arranged driving mechanism, a single servo motor serves as core power, power is distributed to an angle executing mechanism, a height executing mechanism and a drilling executing mechanism according to needs through a liftable rotating gear and a precise toothed plate transmission system, a redundant structure formed by stacking a plurality of drives is abandoned, the whole drilling machine driving system is highly integrated in layout, and the drilling efficiency is improved. The size is greatly reduced, the device perfectly adapts to a narrow tunnel space, and meanwhile the manufacturing cost is reduced.

The invention discloses electric-drive automatic workover operation equipment for a vertical derrick. The electric-drive automatic workover operation equipment comprises a self-propelled chassis, the vertical self-balancing derrick, a traveling block guide rail, a traveling block, an electric winch, a wellhead automatic platform and a hydraulic pipe conveying machine. The self-propelled chassis is installed at the bottom of the main vehicle and provided with four stepping supporting legs, and a stepping device is arranged below each stepping supporting leg. A balance beam type crown block is mounted at the top end of the upright self-balancing derrick; the traveling block guide rail is arranged along the front side of the upright self-balancing derrick; the traveling block moves up and down along the traveling block guide rail; the wellhead automatic platform is integrated with a hydraulic clamp, a righting manipulator and an automatic hoop finder; the hydraulic pipe conveying machine adopts a horizontal-to-vertical bidirectional lifting mechanism, the vertical self-balancing derrick is configured, a loaded crown block is small in offset, the derrick is configured with a traveling block guide rail, a traveling block moves along with the guide rail and is small in wind load drift, the wellhead pipe column handover processing efficiency is high, and the time for a traveling crane system of the workover rig to participate in pipe column handover is shorter; and the overall efficiency of the automatic tubular column processing operation of the workover rig is improved.

The invention discloses a drilling device for mine engineering blasting. The drilling device comprises a crawler chassis, a mounting table, a main control box, an electric telescopic rod, a clamping base, a first motor, a sound wave detector, a multispectral sensor, a second motor, a laser range finder and other components. The main control box integrates a drilling track planning module, a self-adaptive adjustment module and an error compensation module, rock stratum changes are sensed through a multispectral sensor and a sound wave detector, and data support is provided for the modules. The laser range finder monitors the drilling depth and the axis offset, and visual and intelligent control is achieved. The lateral impact force of the drill bit is counteracted through the supporting rod, shaking is reduced, and the drilling straightness is guaranteed; the inclination angle of the drill rod is accurately adjusted through a worm and worm gear transmission structure, and design requirements are met; the design of spring buffering, guide rod resistance reduction and the like improves the equipment stability and prolongs the service life. The device can actively adapt to complex geology, manual intervention is reduced, and the precision, flexibility and operation efficiency of mine blasting drilling operation are remarkably improved.

The application discloses a sampling device for geological exploration, which comprises a geological sampling mechanism and a scale expansion mechanism. The geological sampling mechanism comprises a bottom plate, and a gas cylinder is fixedly connected to the top of the bottom plate. The application relates to the technical field of exploration sampling. The sampling device for geological exploration is combined with the geological sampling mechanism and the scale expansion mechanism. The two mechanisms are arranged so that when the sampling cylinder is lowered for sampling, the U-shaped supporting frame extends out of the side groove by the pressure of the core column. When the sampling cylinder drives the core column to rise, the U-shaped supporting frame supports the lifting supporting piece. The inclined pressing plate, the inner groove sliding frame and the tooth block are matched, so that the seal block can continuously and uniformly pass through the side groove and expand on both sides of the core column. Therefore, the scale line can be marked in advance when the core column is still in a whole in the sampling cylinder.

A method of drilling a borehole into a subsurface region. The method includes identifying, based on a depth of the drill bit in the subsurface region, a collaring stage of drilling the borehole. A sensor a measured parameter of the drill during drilling. The method also includes identifying, based on the collaring stage, a reference value for a drilling parameter of the drill. The method also includes generating a difference between the measured parameter and the reference value. The method also includes determining, from the difference, an adjustment factor to the drilling parameter. The method also includes adjusting the drilling parameter according to the adjustment factor to generate an adjusted drilling parameter. The method also includes modifying, during drilling and with the drill controller, operation of the drill according to the adjusted drilling parameter to change the measured parameter to a new measured parameter.

The invention belongs to the technical field of roadway support, and particularly relates to roadway drilling and anchoring equipment which comprises a crawler, a lifting arm is arranged on the crawler, a base is arranged on the lifting arm, a rotating mechanism is arranged on the base, a drilling device and an anchor rod filling device are arranged on the rotating mechanism, and the anchor rod filling device is arranged on the drilling device. The anchor rod filling device comprises an anchor rod switching mechanism and an anchor rod inserting mechanism, the anchor rod switching mechanism is arranged above the anchor rod inserting mechanism, and the anchor rod inserting mechanism is used for sequentially inserting anchor rods provided by the anchor rod switching mechanism into drill holes. The drilling, anchor rod supplying, inserting and supporting functions are integrated, and coherent operation is achieved through a hydraulic motor, threaded rod transmission and an automatic control system. Automatic anchor rod supply is achieved, anchor rod insertion is completed through the ejector rod pushing mechanism, manual intervention and procedure connection time are shortened, and the supporting efficiency is improved; the equipment can be compatible with anchor rods of different specifications, the application range is expanded, and the multi-scene requirement is met.

The invention discloses self-adaptive variable-diameter drilling equipment for a high and cold frozen soil region and a stable-temperature construction method, and relates to the technical field of constructional engineering construction equipment, in particular to the self-adaptive variable-diameter drilling equipment for the high and cold frozen soil region, the self-adaptive variable-diameter drilling equipment comprises a main body, and the top of the main body is fixedly connected with a drilling assembly; a multi-blade structure is utilized, each blade is provided with an independent electric heating wire, the electric heating wires can preheat the blades in the drilling process, the blades are prevented from being embrittled due to low temperature, the service life of the drill bit is prolonged, the multiple telescopic auxiliary rotary drill bits are evenly distributed around the main drill bit, and the drilling efficiency is improved. The telescopic rod controls the auxiliary rotary drill bit to automatically adjust the telescopic length of the auxiliary rotary drill bit according to the hardness of the frozen soil layer and the drilling depth, so that the total diameter of the drill bit is changed to meet the drilling requirements of different diameters.

A method of retrofitting a service rig includes obtaining a service rig having a plurality of mechanically powered equipment for performing well service operations. The method also includes retrofitting the service rig with a plurality of electrically powered equipment for performing well service operations.

The invention discloses a drilling device for hydraulic ring geological exploration, and particularly relates to the technical field of geological exploration, the drilling device comprises a driving assembly, the driving assembly is provided with a direction adjusting assembly used for adjusting the angle, the direction adjusting assembly is provided with a drilling assembly used for drilling work, and the driving assembly is provided with a feeding adjusting assembly. According to the drilling device for hydraulic ring geological exploration, power is provided for the hydraulic telescopic rod through the hydraulic oil pumping assembly, stable axial feeding of the drilling assembly is achieved, the drilling depth is accurately controlled, the pressure relief assembly monitors the pressure of a hydraulic system in real time, and when the pressure exceeds a set threshold value, the hydraulic telescopic rod is driven to rotate; the electromagnetic ring drives the movable pipe to slide to expose the pressure relief hole, pressure relief is achieved through backflow of hydraulic oil, the situation that the device is damaged due to too large pressure caused by hard rock strata and the like is avoided, the elastic piece pushes the movable pipe to reset to close the pressure relief hole after the pressure is recovered, stable and balanced feeding pressure is guaranteed, self-adaptive pressure adjustment is achieved, and operation safety and reliability are improved.

The invention relates to the field of spraying, and particularly discloses a high-pressure rotary-cut type dust catching and spraying device for a down-the-hole drill, which comprises a mobile vehicle body, a lifting assembly is arranged on the mobile vehicle body, a drilling assembly is arranged at the output end of the lifting assembly, and a water supply assembly is arranged on the mobile vehicle body. A communicating assembly communicating with the water supply assembly is arranged on the movable vehicle body, and a capturing assembly used for capturing dust is arranged between the communicating assembly and the drilling assembly. During early drilling, the first-stage spraying assembly and the second-stage spraying assembly can synchronously capture dust, the second-stage spraying assembly has a compensation effect on the first-stage spraying assembly, and dust escape is avoided; and during later drilling, the effect of catching dust in the catching assembly by the second-stage spraying assembly can be achieved, the dust falling effect is achieved, meanwhile, two water curtains are formed, the dust blocking effect is achieved, dust escape is further reduced, and the dust catching effect is greatly improved.

The invention provides a prospecting method for a brine type lithium-potassium-boron ore deposit in a foreland basin carbonate rock stratum. The prospecting method comprises the steps that the type of a metallogenic potential structure unit is determined; determining a mineralization brine supply potential source type; determining the type of a favorable metallogenic structure unit; calculating a construction unit comprehensive evaluation coefficient, and screening favorable exploration construction units; carrying out metallogenic brine carbonate reservoir analysis on the favorable exploration structure unit, and delineating a favorable exploration target area; and performing drilling verification on the favorable exploration target area, and evaluating the economic value of the favorable exploration target area. According to the method, multi-level prospecting prediction from full-basin-scale optimal construction units to local target area fine evaluation is realized, and the exploration efficiency and the success rate of the brine type lithium potassium boron deposit are remarkably improved.

The utility model relates to the technical field of tunnel construction, and discloses a tunnel punching device which comprises a vehicle plate, a bearing seat is fixedly mounted at the top of the vehicle plate, a multi-axis mechanical arm is fixedly mounted at the top of the bearing seat, and a tunnel punching mechanism is fixedly mounted on the multi-axis mechanical arm; the tunnel punching mechanism comprises a mounting base, a first hydraulic cylinder, a mounting plate, a drilling machine, a drill bit, an electric telescopic rod, a stop block, a laser distance measuring sensor, a guide sliding plate and a propping plate, the mounting base is fixedly mounted on the multi-axis mechanical arm, a first groove is formed in the side, away from the multi-axis mechanical arm, of the mounting base, and the first hydraulic cylinder is fixedly mounted in the first groove; the mounting plate is fixedly mounted at the output shaft end of the first hydraulic cylinder. Compared with the prior art, the tunnel drilling device has the following advantages and effects that a hole with the needed depth can be accurately drilled in the wall in the tunnel according to the requirement, operation is easy and convenient, the working efficiency is improved, and the accuracy of the drilling depth is ensured.

Disclosed is a rupture disc assembly for use in making a temporary seal in a vessel such as a casing string. The rupture disc assembly may include a rupture disc having a side surface that has a shallow angle taper inward towards a bottom surface of the rupture disc, and a mounting apparatus to support the rupture disc so that the rupture disc forms the temporary seal. When a disc working pressure is applied to a top surface of the rupture disc, engagement / force transmission between the rupture disc and the mounting apparatus produces enough radial compression in the rupture disc due to the shallow angle taper to significantly mitigate or cancel tensile stresses thereby avoiding the rupture disc from breaking. The rupture disc may be configured to break when the rupture disc is subjected to a disc working pressure that is greater than the disc rupture pressure, thereby removing the temporary seal. An axial abutment surface feature may be provided which is configured and operable to limit downward axial movement of the rupture disc relative to said disc support mechanism and thus be operable to restrict the amount of compression said tapered wall surface of said disc support mechanism can exert on said at least a portion of said rupture disc when the top surface of the rupture disc is subjected to said hydraulic pressure within the well.