1568 results about "Directional drilling" patented technology

The present invention belongs to the technical field of coal mine drilling rigs, and relates to an intelligent directional coal mine drilling rig and a drilling method thereof. The intelligent directional coal mine drilling rig comprises a moving platform, a frame, a clamping device, a main manipulator, a power head, a drill pipe storage system, a control system and a hydraulic system. The present invention improves the structure of a power head by providing an angle adjuster having accurate angle adjusting and anti-rotation locking functions on the side of a transmission away from a main motor, a driving shaft in the transmission connecting the main motor and the angle adjuster; in addition, the control system comprises a tool face angle measurement and initialization system. Therefore, by means of cooperation between the tool face angle measurement and initialization system and the angle adjuster, the present invention solves the problems that drilling rigs in the prior art lack special tool face angle adjusting devices and thus have low precision and efficiency in trajectory adjustment and have difficulty in achieving automatic directional drilling.

The invention discloses a multi-source collaborative advanced geological exploration method based on TBM construction, and belongs to the technical field of tunnel engineering geological exploration. A three-dimensional geological model is constructed through multi-scale collaborative operation of directional long exploration drilling, branch short exploration drilling and in-hole transient electromagnetic detection; the directional long exploration adopts a secondary drilling structure and a screw motor directional drilling technology to realize accurate control of a deep stratum, the branch short exploration realizes dynamic and rapid verification through a TBM integrated drilling machine, meanwhile, in-hole transient electromagnetic exploration adopts three-component measurement and an intelligent inversion algorithm to fill the blank of geological information between drill holes, and by means of mutual data correction of the three methods, the detection accuracy is improved. A three-in-one detection system of drilling, geophysical prospecting and intelligent analysis is formed, and then accurate advanced prediction is achieved, so that the problems that a traditional single detection technology is low in precision and insufficient in coverage range are effectively solved, the water inrush risk is remarkably reduced, construction safety is guaranteed, and the method is effectively suitable for deep tunnel TBM safety construction.

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.

The invention discloses an integral type automatic directional drilling machine suitable for underground directional construction and a control method of the integral type automatic directional drilling machine. The integral type automatic directional drilling machine comprises a walking mechanism, a drilling main machine, a rod loading and unloading mechanical arm, a rod supplementing device, a suspension arm and a power pump station, in the drill rod loading and unloading construction process, the rod loading and unloading mechanical arm can achieve the rod loading and unloading function at different drilling angles, the rod loading and unloading action within the range of 0-90 degrees can be achieved in the mode that linear motion and rotary motion are combined, accurate positioning at multiple angles is achieved in the mode that mechanical limiting and an angle sensor are combined, and the drill rod loading and unloading efficiency and reliability are improved; during rod supplementing operation, the drilling machine has the rod bin capacity meeting the single-shift footage average value in actual construction, single-shift one-time rod supplementing can be achieved, and auxiliary personnel do not need to wait for rod supplementing basically. The drilling machine is suitable for underground coal mine automatic directional drilling machine construction, can achieve integral layout, is compact in structure, is provided with a power system, and does not need to be matched with a special power pump truck for use.

The invention relates to the technical field of directional drilling track control, and discloses a coal mining underground directional drilling track control method and system, and the method comprises the steps: carrying out the fusion track analysis of a drilling machine based on sensor data, drilling parameters and pre-obtained geological hardness parameters, and obtaining a reference track of the drilling machine, a sensor, an azimuth angle sensor and a bit pressure sensor are used for synchronously collecting drill bit attitude data of a drilling machine to generate a real-time track of the drilling machine, then track offset calculation is carried out to obtain inclination angle deviation and azimuth angle deviation, and dynamic gain adjustment analysis is carried out on the drilling machine to obtain adjustment parameters of the drilling machine. And finally, the drill bit posture of the drilling machine is adjusted based on the adjusting parameters. According to the method, the directional control accuracy of the underground drilling track can be improved.

The invention relates to the technical field of data processing, and discloses a coal mine area gas control and safety guarantee method and system under complex geological conditions. The method comprises the steps that geophysical prospecting, drilling and logging exploration are conducted on a coal mine area, and geological parameters are obtained; performing statistical analysis on the data, and constructing a three-dimensional gas model; identifying a high-gas area based on the model, and arranging a directional drilling network; differential extraction and anti-reflection measures are implemented according to the drilling network; fusing extraction and sensor data, and predicting a gas change trend by using a neural network; and performing intelligent diagnosis based on the early warning matrix to form a disposal scheme. Under the complex geological condition, the gas distribution rule is accurately mastered, scientific arrangement of directional drilling and optimization design of differential extraction parameters are achieved, meanwhile, a gas early warning decision support system based on artificial intelligence is established, the accuracy of gas treatment and the timeliness of early warning are improved, and therefore safe production of a coal mine is guaranteed.

The invention discloses an automatic long drilling tool loading and unloading system of a directional drilling machine and a control method. The automatic long drilling tool loading and unloading system comprises a drilling main machine, a rod loading and unloading mechanical arm and a rod supplementing device. In the drill rod loading and unloading construction process, the rod loading and unloading mechanical arm can achieve the rod loading and unloading function at different drilling angles, the rod loading and unloading action within the range of 0-90 degrees can be achieved in the mode that linear motion and rotary motion are combined, accurate positioning at multiple angles is achieved in the mode that mechanical limiting and an angle sensor are combined, and the drill rod loading and unloading efficiency and reliability are improved; during rod supplementing operation, the drilling machine has the rod bin capacity meeting the single-shift footage average value in actual construction, single-shift one-time rod supplementing can be achieved, and auxiliary personnel do not need to wait for rod supplementing basically. The drilling machine is suitable for underground coal mine automatic directional drilling machine construction, can achieve integral layout, is compact in structure, is provided with a power system, and does not need to be matched with a special power pump truck for use.

The invention relates to the technical field of horizontal directional drilling monitoring, and particularly discloses a horizontal directional drilling track real-time dynamic monitoring system which comprises a drilling data acquisition module, a self-adaptive data transmission module, a geological layer analysis module, a three-dimensional track monitoring module and an automatic control module. According to the invention, the geological layer analysis module applies an advanced intelligent analysis technology to carry out deep excavation and accurate identification on dynamic data, and the converted drilling data is further converted into a three-dimensional trajectory diagram, so that an operator of a ground control center can master the full view of the drilling operation in real time, the visual monitoring of the operation process is realized, and the working efficiency is improved. The automatic control module fuses a deep learning algorithm, can intelligently identify route deviation or abnormal conditions in the three-dimensional trajectory diagram, quickly generates a visual adjustment instruction, can find and correct potential problems in the first time, and effectively avoids operation delay or resource waste caused by factors such as trajectory deviation.

Systems and methods for characterizing a subterranean formation that include a drill bit for drilling a deviated wellbore through the formation and that repeatedly changes direction. Also included is a directional drilling system and measurement equipment to detect a property of the formation. A trajectory control system is operable to: receive a well log; determine a property of the wellbore; segment the well log based on the property; and correlate one of the segments with the well log previous to the segment to determine a matching score for the segment. If the matching score is equal to or greater than a minimum threshold, the segment was taken in the formation and at the same stratigraphical true vertical depth (“STVD”). If the matching score is less than the minimum threshold, the segment was not taken in the formation and not at the same STVD and the STVD is estimated.

An automated directional drilling machine for a coal mine, comprising: a moving platform (1), a rack (2), a clamping device (3), a main mechanical arm (4), a power head (5), a drill rod storage system (8), a control system (6), and a hydraulic system (7). By improving the structure of the power head (5), an angle adjustor (503) is arranged on the side of a transmission (502) away from a main motor (501), and a transmission shaft (50301) in the angle adjustor (503) is circumferentially and fixedly connected to a driving shaft (50201), so that accurate and efficient adjustment of a tool face angle is achieved by means of the angle adjustor (503) having the functions of accurate angle adjustment and locking to prevent rotation, and the structure of a rotation braking device of the main motor (501) is simplified.

A system and method that may include receiving real-time downhole data from one or more sensors of a drillstring disposed in a borehole in a subsurface geologic region during a directional drilling operation. The system and method also include selecting a drillstring drilling mode from a plurality of drillstring drilling modes. The system and method may additionally include predicting, in real-time, characteristics of a hole bottom of the borehole using the drilling mode model and at least a portion of the real-time downhole data. The system and method may further include controlling the directional drilling operation using one or more of the characteristics.

A system and method that may include receiving real-time downhole data from one or more sensors of a drillstring disposed in a borehole in a subsurface geologic region during a directional drilling operation. The system and method also include selecting a drillstring drilling mode from a plurality of drillstring drilling modes. The system and method may additionally include predicting, in real-time, characteristics of a hole bottom of the borehole using the drilling mode model and at least a portion of the real-time downhole data. The system and method may further include controlling the directional drilling operation using one or more of the characteristics.

The invention discloses a continuous deflecting coring method for realizing wire-line coring orientation, which relates to the technical field of drilling, and specifically comprises the following steps of: selecting a bent screw drill and a matched wire-line coring tool according to geological conditions and a designed drilling track, assembling and connecting the bent screw drill and the matched wire-line coring tool, and putting the bent screw drill and the matched wire-line coring tool into a drilling hole; in the drilling process, the hole bottom power drilling tool provides drilling power, a bent angle of the bent screw drilling tool enables a drilled hole to be inclined according to the design direction, and a rotor cavity of the hollow screw drilling tool allows an internal assembly and a core barrel to pass through. According to the continuous deflecting coring method for wire-line coring orientation, the high-precision directional drilling technology and the wire-line coring technology are organically combined, the problem of exploration of irregular deposited ore deposits and concealed ore deposits is solved, the precision and efficiency of geological exploration are improved, and by adopting the bent screw drill and the matched wire-line coring tool, the geological exploration efficiency is improved. Continuous directional drilling and continuous wire-line coring are carried out at the same time, the number of times of drill lifting is reduced, and the auxiliary time is shortened.

Disclosed in the present invention is a method for draining water of coal mine goafs by crossing an adjacent goaf. An applicable environment of the method comprises a first goaf, a second goaf and a third goaf which are successively arranged on a side of a tunnel, directional drilling mechanisms being provided between the tunnel and the second goaf and between the tunnel and the third goaf, and the directional drilling mechanisms penetrating through a coal seam floor located at the bottom of the goafs so as to communicate with the second goaf and the third goaf. Directional holes comprise a first directional hole and a second directional hole, the first directional hole leading to the second goaf, the second directional hole leading to the third goaf, and a sleeve structure being mounted in the first directional hole. The present invention uses directional drilling, and the directional holes penetrate into and out of the coal seam floor, so as to cross the adjacent goaf, thus increasing the range of explored and drained goafs and the hole length so as to drain in advance water accumulated in the remaining goafs that cannot be drained in a traditional coal mine drilling mode. The present invention can be popularized and used in the field of coal mines to solve the present threat of goaf water to coal mine production.

The invention discloses a directional drilling track accurate control technology based on machine learning, and relates to the technical field of drilling engineering. The directional drilling track accurate control technology comprises the following steps that underground parameters of a drilling tool during underground operation are obtained; establishing a dynamic model based on the drilling tool structure and the motion state; based on the dynamic model, introducing a long-short-term memory neural network, and constructing a hybrid prediction model; drilling parameters are input into the hybrid prediction model, and trend information of multiple tracks is output; based on current geological conditions, drilling tool configuration and operation safety constraints, performing simulation evaluation on the trend information of the plurality of candidate tracks, and screening out an optimal track meeting track precision and underground safety requirements from the candidate tracks; based on the optimal track, control strategy input is constructed, and a state space containing a tool face angle, target azimuth deviation and a drilling tool state is set; and through a deep reinforcement learning method, an advanced adjustment instruction for the guiding tool is generated, and drilling operation is executed according to the optimal track and the advanced adjustment instruction.

The invention discloses a device and a method for three-dimensional intelligent monitoring and prevention of spontaneous ignition in a composite goaf during short-distance coal seam group mining, and the method comprises the following steps: firstly, determining the overall layout and construction of a directional drilling hole in a high-position fissure zone, and then sequentially installing a three-loop switching device, an expansion bag plug and an intelligent analysis control box; during normal gas extraction, different drilling gas is extracted to detect and analyze the concentration change of the index gas, the position and depth of the position are determined when a natural ignition hidden danger occurs, a closed nitrogen injection space is constructed, nitrogen is accurately injected, after coal in the area is fully inerted and cooled, gas extraction is recovered, and the index gas detection is enhanced; the upper natural fire risk of the composite goaf is eliminated. According to the method, through the mode that one hole is used for multiple purposes by replacing a roadway with a hole, the natural ignition hidden danger of the upper portion of the composite goaf can be intelligently monitored while gas of an adjacent layer and the goaf is treated, the specific position of a hidden danger area is determined in a short time, nitrogen is accurately injected, and natural ignition three-dimensional intelligent monitoring and prevention are truly achieved; a powerful support is provided for solving the problem that the upper natural ignition hidden danger cannot be monitored and prevented due to the complex internal environment of the composite goaf at present, and safe production of the mining working face of the close-range coal seam group is guaranteed.

The invention provides a hydraulic fracturing pressure relief method for a multi-layer thick and hard top plate of an extra-thick coal seam. The method comprises the steps that the rock stratum occurrence of the multi-layer thick and hard top plate is obtained through a top plate drilling method; based on a rock mechanics experiment method and a roof peeping method, the stability of the multi-layer thick and hard roof is evaluated, and a fracturing target layer in the multi-layer thick and hard roof is judged; directional drill holes are formed in the fracturing target layer according to the rock stratum occurrence; the fractured target layer is subjected to fracture forming in the directional drilling process through abrasive jet and staged fracturing; and the crack expansion range of the fractured target layer is monitored in real time based on the in-hole micro-seismic monitoring method, and fracturing construction parameters are dynamically adjusted according to the crack expansion range. According to the hydraulic fracturing pressure relief method for the multi-layer thick and hard roof of the extra-thick coal seam, by means of rock stratum testing before fracturing, determination of fracturing construction key parameters and monitoring after fracturing, the good pressure relief effect of the multi-layer thick and hard roof is guaranteed, and effective prevention and control of strong mine pressure disasters of the multi-layer thick and hard roof are achieved.

The embodiment of the invention provides an underground tool face dynamic control method and system based on reinforcement learning, and belongs to the technical field of directional drilling. The method comprises the steps of collecting drilling state data of a target well, performing data preprocessing on the drilling state data, and constructing a corresponding state vector based on the preprocessed drilling state data; calling an action decision model obtained by training based on a DDPG algorithm based on the state vector to obtain an action instruction; wherein the network strategy parameter of the action decision model is obtained by correcting the previous network strategy parameter based on the deviation between the current drilling state data and a pre-constructed reward function; analyzing the action instruction to determine a target physical action; and executing top drive torsional pendulum based on the target physical action, and recycling an execution result until the execution result indicates that the tool face angle meets the expectation. According to the scheme, the stability and the real-time control effect under the working conditions of complex well sections and severe disturbance are improved.

The invention relates to a geotechnical engineering geological investigation system and an investigation method thereof, which are used for solving the problems of drilling redundancy, repeated model correction and long period caused by traditional uniform hole distribution. The system comprises a geophysical exploration module, a rock-soil body structure feature extraction module, a geological abnormal area identification module, a survey detection point dynamic optimization module, a drilling sampling analysis module and a geotechnical engineering stability evaluation module. Earth material exploration is carried out on representative points to obtain a comprehensive geophysical prospecting data set, inversion is carried out according to the comprehensive geophysical prospecting data set to obtain a three-dimensional rock-soil structure, an abnormal area is recognized, accordingly, the drilling layout is dynamically optimized, and stability evaluation is completed at a time after a small amount of directional drilling sampling is carried out. By adopting the system, a high-precision geologic model and a stable evaluation result can be obtained with fewer drilled holes in a preliminary exploration stage, the cost is remarkably reduced, and the period is shortened.

The invention relates to the field of radar systems, in particular to directional drilling radar equipment, which comprises a transmitting unit provided with an angle-adjustable array antenna and capable of transmitting radar waves in any direction to realize directional coverage of a target area; the receiving unit adopts a multi-angle receiving array antenna and is combined with a signal filtering technology, so that the receiving sensitivity and accuracy of weak signals can be effectively improved; the positioning unit is provided with a high-precision inertial navigation system and a depth sensor, and accurate positioning and posture correction of equipment in a drill hole are ensured; the transmitting unit supports a high-frequency working mode and a low-frequency working mode which are respectively used for shallow high-resolution imaging and deep high-penetration detection. The invention provides directional drilling radar equipment and a detection method thereof, which are used for solving the defects of control host performance and directional drilling radar technology in the aspect of imaging technology in the prior art.

The invention discloses a long-distance subarea step-by-step fracturing coal seam permeability increasing method and system, and the method comprises the steps: dividing a target coal seam into different subareas, setting a plurality of perforation point locations according to fracturing requirements, and obtaining fracturing construction parameters of the subareas of the target coal seam; according to the fracturing construction parameters, directional perforation fracturing is conducted on the target coal seam through a kilometer directional drilling machine provided with a laser device; the deepest perforation of the target coal seam is sealed through a hole packer, a conductive ion solution is injected into the hole, and secondary single-hole local fracturing is conducted through the liquid-electric effect; and respectively connecting the positive electrode and the negative electrode to the walls of two adjacent perforation holes, and performing three-stage two-hole block fracturing by utilizing an electric crushing effect until the coal seam in the partition is completely fractured. According to the method, three-stage step-by-step fracturing permeability increasing of the target coal seam can be achieved, consumption of water resources and energy loss of high-voltage cables are reduced to a great extent, and the energy utilization rate is increased.

The invention discloses a directional deflecting wire-line coring drilling device and a directional deflecting wire-line coring drilling method, relates to the field of drilling of soil layers or rocks, and solves the problems that an existing drilling device is high in deflecting direction control difficulty and small in deflecting amplitude. According to the technical scheme, the directional deflecting wire-line coring drilling device comprises a deflecting short section, a top short section and a bottom short section, the top short section and the bottom short section are arranged at the upper end and the lower end of the deflecting short section, a drill rod connector is arranged at the upper end of the top short section, and the lower end of the bottom short section is connected with a hollow motor. A cylindrical coring cavity is formed in the top short section, the deflecting short section, the bottom short section, the hollow motor and the drill bit; the top short section and the deflecting short section, every two adjacent deflecting short sections and the deflecting short section and the bottom short section are connected through deflecting connecting structures, two pull rope holes are formed between the top short section and the upper end face and the lower end face of each deflecting short section, pull ropes penetrate through the pull rope holes, and the postures of the deflecting connecting structures can be adjusted through the pull ropes. And linear drilling and directional drilling are realized.

A method can include receiving data for a bottom hole assembly of a drillstring and a drill plan; generating candidate trajectories using at least a portion of the data; generating drill command schedules for the candidate trajectories; ranking the candidate trajectories based at least in part on the drill command schedules; and outputting at least a top ranked candidate trajectory and its corresponding drill command schedule.

A short radius drilling tool and a trajectory-controllable lateral drilling tool and method, including a lateral drilling section with high passing ability and a power transmission section, wherein the lateral drilling section with high passing ability can drill the extension well section of a short to ultra-short radius well section that extends laterally from a main wellbore. The designed trajectory-controllable lateral drilling tool allows a wellbore to be subjected to directional drilling with a short to ultra-short radius from a tail end or any position of the original wellbore trajectory, and then implements lateral extension drilling. Furthermore, the device has engineering feasibility and practical value for thin reservoir exploitation, remaining oil potential tapping, exploitation of horizontal wells in sub-salt reservoirs, combined exploitation of thin interbed, coalbed methane exploitation, underground gasification exploitation of coal mine, unconventional oil and gas exploitation, (seabed) shallow horizontal well drilling, and exploitation of other minerals.

A system and method that may include receiving real-time downhole data from one or more sensors of a drillstring disposed in a borehole in a subsurface geologic region during a directional drilling operation. The system and method also include selecting a drillstring drilling mode from a plurality of drillstring drilling modes. The system and method may additionally include predicting, in real-time, characteristics of a hole bottom of the borehole using the drilling mode model and at least a portion of the real-time downhole data. The system and method may further include controlling the directional drilling operation using one or more of the characteristics.

The invention discloses a full-length expanded-head anchor cable jet grouting reaming rapid construction process, which comprises the following steps: firstly, equipment is fully prepared and has strong pertinence, and a drill rod, a steel bearing body, a hydraulic extrusion sleeve and other parts act synergistically to ensure stable drilling of an anchor cable; secondly, surveying and setting-out are accurate, and accurate arrangement of anchor cable hole positions and real-time deviation correction of a drilling track are achieved by utilizing equipment such as a total station and a level gauge in combination with a drill rod inclination angle adjusting formula and a directional drilling track design formula; and finally, the staged drilling process is scientific and reasonable, primary drilling and secondary drilling are combined, a reaming method is flexibly selected according to different geological conditions, a hard stratum and a complex space environment are effectively dealt with, the hole forming quality is guaranteed, all links are tightly connected from equipment disassembly to high-pressure rotary guniting fluid back pulling to anchor cable tensioning and locking, and the drilling efficiency is greatly improved. And finally, stable anchoring of the anchor cable under complex geological conditions is achieved, and reliable prestress guarantee is provided for slope or foundation pit supporting.

The invention relates to the technical field of hydraulic systems, and discloses a directional drilling hydraulic system of a kilometer directional drilling machine, which comprises a hydraulic pump station, a walking unit, a drilling main unit, a drilling auxiliary unit and a stabilizing unit, the hydraulic pump station is connected with the walking unit, the drilling main unit, the drilling auxiliary unit and the stabilizing unit; the main pump assembly and the auxiliary pump assembly do not influence each other and run independently relatively, so that two systems for providing hydraulic power by the main pump assembly and the auxiliary pump assembly work simultaneously but do not interfere with each other, the stability and reliability of the systems are ensured, the operation steps of the directional drilling machine are simplified, the construction safety of the drilling machine is improved, and the failure rate of the hydraulic system of the drilling machine is reduced. The main pump assembly and the auxiliary pump assembly work independently, the main pump assembly provides hydraulic power for the walking unit and the drilling main unit, the auxiliary pump assembly provides hydraulic power for the drilling auxiliary unit and the stabilizing unit, drilling machine faults caused by misoperation are reduced, the construction safety of the drilling machine is improved, and the drilling efficiency of the drilling machine is effectively improved.

The invention discloses an earth surface directional drilling high-pressure deep hole grouting construction method based on steel sleeve hole fixing. The earth surface directional drilling high-pressure deep hole grouting construction method comprises the following steps that firstly, a directional drilling machine is used for vertically drilling a grouting hole downwards; secondly, a plurality of steel floral tubes are sequentially put down in the three-opening first branch grouting hole; thirdly, cement-bentonite-based sleeve shell materials are continuously injected into the first section of the steel floral tube to the inner bottom of a first branch grouting hole of the three-opening hole, and an annular space between the first branch grouting hole of the three-opening hole and the steel floral tube string is filled with the cement-bentonite-based sleeve shell materials; fourthly, a packer is lowered to the bottom of the three-opening first branch grouting hole; a packing section is formed in front of the packer; and fifthly, cement grout is injected into the grouting pipe, grouting is conducted on the packing section, the finally-set cement-bentonite-based casing material is split and damaged under the effect of grouting pressure, and the grouting grout is injected into the stratum to be reinforced through the grout channel. According to the method, the hole collapse phenomenon when the grouting hole penetrates through the unfavorable geological section can be prevented, the grouting stopping effect of the packer is guaranteed, and retreating type segmented grouting construction is guaranteed.

The invention discloses a drilling device for geological mineral exploration, and relates to the technical field of geological exploration, and the drilling device comprises a supporting and bearing device which is fixed on the ground where a target position is located; the rotating device is rotationally arranged on the supporting and bearing device; the positioning and adjusting device is fixed on the rotating device and is positioned above the supporting and bearing device; the lifting adjusting device is fixed to the rotating device and located on the outer side of the positioning adjusting device; the driving assembly is arranged on the lifting adjusting device in a sliding mode and located above the positioning adjusting device; the conveying device is fixed on the side part of the rotating device; and the drilling assembly is arranged in the middle of the positioning adjusting device in a sliding mode and connected with the bottom of the driving assembly, and the drilling assembly is rotationally connected with the positioning adjusting device. The drilling rod is limited in the drilling process, so that the drilling assembly performs drilling according to the set direction, and directional drilling can be performed by selecting a proper angle according to requirements.

The invention relates to the technical field of drilling, in particular to a horizontal directional drilling device for underground excavation of an electric power tunnel. According to the horizontal directional drilling device for underground excavation of the electric power tunnel, the drill rods to be spliced can be limited and locked, the situation that the drill rods fall off from the limiting frame due to soil pressure is avoided, and the construction safety and efficiency are improved. An electric power tunnel underground excavation horizontal directional drilling device comprises a mounting frame, moving wheels, a drilling mechanism and the like, the lower side of the mounting frame is rotationally connected with the multiple moving wheels, and the drilling mechanism capable of conducting horizontal directional drilling is arranged on the mounting frame. When the drill rod slides rightwards, the drill rod pushes the friction wheel to rotate, at the moment, the top frame cannot move, then the drill rod cannot push the friction wheel to rotate, and the effects that the drill rod to be spliced can be limited and locked, the drill rod is prevented from falling off the limiting frame due to soil pressure, and the construction safety and efficiency are improved are achieved.