15results about "Drilling using explosives" patented technology

An apparatus, rock drilling rig and drilling method. The apparatus (A) provides position control data (39) for controlling positioning a rock drilling unit (4) of a rock drilling rig (1) for drilling transverse drill hole patterns (13) to an underground tunnel (7). The apparatus comprises a teaching feature (33) for gathering data on manually controlled movements (38) at the location of the drill hole pattern and to thereby detect a movement path which is collision free. The data on the taught collision free movement path (19) is implemented when controlling the rock drilling unit during an actual drilling phase.

The method relates to a method and system for drilling by means of a drill head with an end portion, wherein at least two electrodes are arranged at the end portion, the method comprising: moving, by means of an actuation system, the drill head adjacent to a surface to be broken up; applying, by means of a voltage generator, a voltage between the electrodes resulting in one or more electric discharges between the electrodes, the one or more discharges resulting in one or more electric arcs for breaking up the surface; and wherein a gap distance is provided between the at least two electrodes of the drill head and the surface during generation of the one or more electric arcs.

The invention discloses an underwater pebble covering layer drilling method which comprises the following steps that S1, a variable-diameter casing pipe is pressed into water in a hydraulic pressing-in mode, the bottom of the variable-diameter casing pipe penetrates through a pebble layer and abuts against underwater rock, and the variable-diameter casing pipe comprises a large casing pipe body and a small casing pipe body which are connected with each other; s2, a drill rod is inserted into the variable-diameter casing pipe, and the drill rod is started; and S3, firstly crushing the cobblestones by the drill rod, and then drilling holes in the underwater rock. The variable-diameter casing pipe can penetrate through a cobblestone layer through hydraulic pressing, and the problem that a traditional casing pipe is difficult to penetrate through the cobblestone layer is solved. The large sleeve and the small sleeve form the variable-diameter sleeve, when the variable-diameter sleeve is lowered, the influence of water flow on the large sleeve is small, when the small sleeve penetrates through the cobblestone layer, the diameter of the small sleeve is smaller, the small sleeve can be inserted into the cobblestone layer more easily, the junction of the small sleeve and the large sleeve is in smooth transition, and the large sleeve can be inserted into the cobblestone layer along with the small sleeve conveniently. The small casing pipe is more attached to the drill rod, accurate guiding is conveniently provided for the drill rod, and work of the drill rod is facilitated.

Systems for forming or extending a tunnel or shaft within geologic material may include a ram accelerator assembly for accelerating one or more projectiles into geologic material to weaken a region of the geologic material. The projectile(s) pre-condition the geologic material, such as by forming one or more holes in a central region of the material or to define a perimeter of the region to be displaced. A cutting tool or subsequent projectile impacts may then be used to remove the weakened material. The voids formed by the first projectile(s) cause compressive forces from subsequent impacts or cutting operations to be converted to tension forces that more efficiently break geologic material, which may fall into the voids created by the first projectile(s). The voids created by the projectile impacts may also control the material that is removed and the shape of a resulting section of the tunnel or shaft.

The present application relates to a kind of solid deflagration expansion fixed type ultrasonic wave drilling anchoring device and method, belong to ultrasonic wave drilling anchoring technical field.Solve the problem of insufficient anchoring force.It includes feeding device and drilling anchoring device, the feeding device is established with drilling anchoring device cooperation, feeding device is used to drive drilling anchoring device, drilling anchoring device is used to realize fixed.The present application when reaching certain drilling depth, solid fuel in the end of drill pipe cavity is ignited by electrode, ignites solid fuel nitrocellulose, occurs violent combustion and explosion, produces a large amount of energy, and the end of drill pipe is extruded and deformed;Deformed expansion cavity will extrude the inner wall of borehole, produce certain expansion force, provide larger effective anchoring force for the whole device, realize the fixation of the whole device, provide larger anchoring force for sampler under simple structure.

To provide position control data for controlling positioning of a rock drilling unit of a rock drilling rig for drilling a cross borehole pattern in an underground tunnel.SOLUTION: An apparatus (A) includes a teaching feature part (33) for collecting data about manually controlled movements at locations of a borehole pattern, thereby detecting a collision-free movement path (19). The data about the taught collision-free movement path (19) is implemented when controlling a rock drilling unit during the actual drilling phase.SELECTED DRAWING: Figure 8

The present invention discloses a drilling device for mining that can detect flaws in high-speed moving drill rods. The device relates to the field of mining technology and includes a drilling unit mounted on a body, a flaw detection unit, a linear motion unit, a first reversing switch, a second reversing switch, and an industrial control computer. The drilling device utilizes a rotating ultrasonic flaw detection head to perform flaw detection on the high-speed rotating drill rod, enabling repeated reciprocating flaw detection of the exposed drill rod. This facilitates timely detection of cracks in the drill rod and avoids missed detections along the detection path.

An apparatus, rock drilling rig and drilling method is provided. The apparatus provides position control data for controlling positioning a rock drilling unit of a rock drilling rig arranged for drilling transverse drill hole patterns in an underground tunnel. The apparatus includes a teaching feature for gathering data on manually controlled movements at the location of the drill hole pattern and to thereby detect a movement path, which is collision free. The data on the taught collision free movement path is implemented when controlling the rock drilling unit during an actual drilling phase.

The invention discloses an integrated blast hole automatic drilling and charging system, which belongs to the technical field of automatic blasting equipment and comprises an advancing mechanism, a downward drilling device, a continuous charging device, a wireless detonator inserting device and an automatic cartridge feeding device. And the advancing mechanism advances on the ground. And the downward drilling device is used for drilling a vertical blast hole underground. And the continuous charging device is used for clamping and bearing the cartridges which are vertically arranged, moves to the position above the drilled hole along with the feeding mechanism and puts the cartridges into the drilled hole. And the wireless detonator inserting device is used for inserting the detonator into the clamped cartridge. And the automatic cartridge feeding device is responsible for supplementing cartridges to the clamping position. According to the device, the processes of drilling, charging, detonator mounting and the like are integrated, mechanization and automation of blasting operation are achieved, the labor intensity of workers and potential safety hazards can be remarkably reduced, and the operation efficiency and reliability are improved.

The invention discloses a mesopore upward well cutting one-time blasting well forming method which comprises the following steps: designing a rectangular hole distribution structure in an ore body well cutting area, arranging at least one first-aperture blast hole in a well center position, uniformly arranging a plurality of first-aperture blast holes around the first-aperture blast hole, additionally arranging second-aperture blast holes between adjacent first-aperture blast holes, and forming a first-aperture blast hole and a second-aperture blast hole between adjacent second-aperture blast holes; the second hole diameter is smaller than the first hole diameter, multiple circles of third-hole-diameter blast holes are formed outwards in a layered mode from the well center in the angular bisector direction, the blast holes in the well center area are not charged and serve as free faces, the first circle of blast holes closest to the well center serve as hole expanding hole charging, subsequent blast holes are charged according to the blasting time sequence, millisecond-level delayed hole-by-hole blasting is adopted, and one-time blasting well forming is achieved. According to the one-time blasting well forming method for the mesopore upward well cutting, the structural form is simple, the roadway tunneling cost is not increased, and due to one-time well forming, the safety risk is controllable, and the effect is good.

The invention relates to the technical field of well completion blasting construction, in particular to a one-time well completion blasting construction process which comprises the following steps: S1, investigating geological conditions of a shaft location in detail, and designing a shaft according to geological data and engineering requirements; s2, according to design requirements, the positions and the number of drilled holes are reasonably arranged, and it is ensured that the shape of a shaft after blasting is regular; s3, according to the rock property, the shaft diameter and the drilling depth parameters, the explosive loading amount of each drilling hole is calculated, and an explosive loading density method is adopted for explosive loading; s4, after charging, a drilling hole opening is blocked by a blocking device, and explosion gas is prevented from leaking; and S5, designing a detonating network, and starting a detonating device according to a preset detonating sequence for blasting. According to the device, through the arrangement of the impact positioning assembly, the situation that potential safety hazards are caused by gas leakage generated by blasting in a drill hole due to the fact that the blocking box is separated from the drill hole under the blasting effect is avoided.

In the context of downhole tools, bulkhead igniter assemblies having snap-on insulators are disclosed. In some embodiments the bulkhead igniter assemblies have a bulkhead with a first end formed with at least one ridge or groove, a pressure block, a setting tool, and a snap-on insulator. The snap-on insulator has an annular body having a tubular channel through a center portion. Ridges or groves on the snap-on insulator mate with ridges or grooves on the bulkhead igniter to hold the snap-on insulator in place on the bulkhead igniter by interaction of the ridge or groove of the snap-on insulator with the ridge or groove on the first end of the bulkhead igniter. Other embodiments are disclosed.

The invention relates to the technical field of drilling equipment, and discloses a blasting drilling device which comprises a fixing box, a supporting plate fixedly installed on the inner surface of the fixing box, a servo motor installed on the outer surface of the supporting plate in a matched mode, a connecting column fixedly connected to the output end of the servo motor through a coupler, and a spiral blade welded to the outer surface of the connecting column. The drill bit is fixedly connected to the outer end face of the connecting column; and the slag removing mechanism comprises a slag collecting assembly which is arranged below the fixing box and used for conveying the broken stones into an inner cavity of the fixing box. According to the drilling device, through cooperation of the slag assembly, the leakage assembly and the lifting assembly, in the drilling process, disintegrating slag generated during drilling can be collected and transferred to the bearing barrel in time, the disintegrating slag is prevented from being accumulated in a drilling area, it is guaranteed that drilling operation is conducted smoothly, the drilling depth can be precisely controlled, and the drilling efficiency is improved. And the reworking problem caused by improper drilling depth is greatly reduced, so that the effect of improving the overall construction quality is achieved while the follow-up cleaning workload and cleaning cost are reduced.

The application provides a soft cover layer end bearing rock-embedded pile forming system and a construction method, the soft cover layer end bearing rock-embedded pile forming system comprises a thick soft clay cover layer retaining and water stopping curtain body, a strong weathered rock stratum rock wall supporting ring wall body and a medium weathered rock stratum bottom expansion cavity body; firstly, a group construction micro-inclined SMW method pile ring, a reinforced concrete pile top ring beam and a soft clay partition excavation are used to form the thick soft clay cover layer retaining and water stopping curtain body in the thick soft clay cover layer; then, the strong weathered rock stratum is excavated and constructed to form the strong weathered rock stratum rock wall supporting ring wall body; then, the medium weathered rock stratum is excavated and constructed to form the weathered rock stratum bottom expansion cavity body; finally, the bottom virtual soil is cleaned, a steel reinforcement cage is placed and concrete is poured to form a pile. The thick soft clay cover layer retaining and water stopping curtain body is formed by using multiple groups of micro-inclined SMW method pile rings and multiple groups of reinforced concrete ring beams, the pile hole wall is effectively formed, the water stopping effect is good, and the negative friction resistance after pile forming is avoided.

The present invention provides a construction method for rigidly connecting two ships in series for reef blasting in inland waterways. The specific steps and features include rigidly connecting two drill and blast ships in series as a whole for anchor positioning, simultaneously conducting drill and blast operations, and simultaneously shifting the drill and blast ships. This method can avoid problems such as the mutual crossing and interference of the main cables and back cables between ships when multiple drill and blast ships are arranged separately, difficulties in safe avoidance during blasting, and a large occupation of the construction area. After the number of drill and blast ships increases, the progress of reef blasting construction is greatly improved, and the construction period is saved.