Compressing-deslagging-drilling dust remover for coal pits

Device for running casing pipes in gas extraction drill hole

The invention provides a device for running casing pipes in a gas extraction drill hole. The device comprises a casing pipe holder and a chunk propeller, wherein a first upper clamping base of the casing pipe holder is buckled on a first lower clamping base of the casing pipe holder to form a first bayonet for clamping one casing pipe, a first movable slips is arranged on the first upper clamping base in a sliding mode, a first adjusting rod penetrates through the first upper clamping base and is connected with the first movable slips, and the casing pipe in the first bayonet is clamped or released by adjusting the first movable slips; a second upper clamping base of the chunk propeller is buckled on a second lower clamping base of the chunk propeller to form a second bayonet for clamping one casing pipe, a second movable slips is arranged on the second upper clamping base in a sliding mode, a second adjusting rod penetrates through the second upper clamping base and is connected with the ...

Intelligent track control method and system for underground coal mine nearly horizontal directional drilling

The invention provides an underground coal mine nearly horizontal directional drilling intelligent track control method and system, and relates to the technical field of underground coal mine drilling.The method comprises the steps that data collection is conducted on a target drilling area, a coal seam detection data set is obtained, and a coal seam section vector diagram is constructed; the method comprises the following steps of: analyzing indexes of each distributed coal seam in three aspects of coal seam hardness, coal seam divergence and coal seam stability by building a stress hidden danger analysis model to obtain a hidden danger coefficient for identifying drilling potential safety hazards; carrying out damage risk analysis on the drilling tool based on the hidden danger coefficient, and giving an instruction of tool face angle switching when a certain risk probability is reached; and transmitting the instruction to a corresponding appliance control system terminal to control the ...

Directional drilling intelligent layout method and system for gas control

The invention provides an intelligent directional drilling layout method and system for gas control, and relates to the technical field of gas drilling control, and the method comprises the steps: obtaining coal seam occurrence information and gas source information, collecting a roadway video, carrying out feature frame recognition, splicing, constructing and collecting a three-dimensional scene, the method comprises the following steps: performing gas drilling initial fitting according to gas control demand information, coal seam occurrence information and gas source information, performing fitting correction on a drilling position of an initial drilling fitting result based on roadway characteristics in a scene, obtaining an adjusted drilling fitting result, performing numerical simulation, generating a numerical simulation node, and performing multi-angle gas control evaluation. According to the method and the device, the technical problem that in the prior art, gas drilling hole distribution ...

Eccentric wheel clamp and method for running casing in drill hole of mine

The invention provides an eccentric wheel clamp and a method for running a casing in a drill hole of a mine. The eccentric wheel clamp provided by the invention comprises an annular casing clamp, an eccentric wheel and a suspension arm, wherein the circumference of the annular casing clamp is provided with a hole; the eccentric wheel is fixed on an extended part of the annular casing clamp on theedge of the hole and extended into the annular casing clamp through the hole; one end of the suspension arm is fixedly connected with the eccentric wheel; and the length of the part of the eccentric wheel extended into the annular casing clamp through the hole is changed by lifting or pressing the suspension arm. The invention also provides the method for running the casing in the drill hole of the mine by using the eccentric wheel; the running of the casing is performed in the mine by using the eccentric wheel clamp; the method is convenient to use, and is suitable for various types of casings ...

Thrust auxiliary reamer bit

The invention relates to a thrust auxiliary reamer bit which comprises a drill rod (1), a multi-blade reamer (2) which is connected to a forcing device (4) and a cylinder (5) to form a whole, and a drill bit (3), all the parts being connected in sequence. The invention is characterized in that the forcing device (4) is a fluid piston type and formed by the cylinder (5), a piston (6) and a piston rod (1) arranged in the cylinder, the piston (6) is fixed on one end of the piston rod (7), the other end projects the cylinder (5) and fixes a taper forcing head (10); an air channel is arranged in a wall of the cylinder, an upper chamber air inlet/exhaust hole (11) at one end of the air channel is through in the piston chamber, an open at the other end is communicated with a Cornish bit wing air passage namely a drill rod air channel, a lower chamber air inlet hole (13) is arranged on the wall of the cylinder and is communicated with outside through the wall of the cylinder; and a reset spring ...

Helmet display method and device for rock mass structural surface recognition

The invention discloses a helmet display method and device for rock mass structural surface recognition, and relates to the field of image recognition and analysis. The method comprises the following steps: acquiring a target rock mass image, positioning and attitude determination data and an external environment light brightness signal; establishing a refined point cloud data fusion model of the target rock mass according to the target rock mass image and the positioning and attitude determination data; recognizing and marking structural surface distribution information of a target rock mass according to the refined point cloud data fusion model; generating brightness adjustment information according to the external environment light brightness signal; and adjusting the display brightness of the structural surface distribution information of the target rock mass according to the brightness adjustment information. According to the invention, rapid, high-precision and real-time identification ...

Compressed air slag discharge drilling deduster for use under coal mines

The invention discloses a compressed air slag discharge drilling deduster for use under coal mines, which relates to a ventilating and dedusting device for use under coal mines, and comprises a Venturi tube mixer, wherein the Venturi tube mixer comprises an air inlet chamber, a contracted tube section, a straight tube section and a conical diffusion section, wherein a high-pressure air inlet tube is arranged in the air inlet chamber; the outer end of the high-pressure air inlet tube is arranged outside the air inlet chamber; the inner end of the high-pressure air inlet tube is connected with at least one straight tube which is parallel to the central axis of the Venturi tube mixer; the other end of the straight tube is provided with a high-pressure air nozzle, and the outlet of the high-pressure air nozzle is arranged in the Venturi tube mixer; the high-pressure air inlet tube is also connected with an injector which is connection with a liquid tank through a connecting pipe; and the liquid ...

Eccentric wheel clamp and method for running casing in drill hole of mine

Deduster

The invention discloses a deduster, relating to an underground dust removal and ventilation device. The deduster comprises a Venturi tube mixer, wherein the Venturi tube mixer comprises an inlet chamber, a shrinking tube section, a straight tube section and a tapered diffusion section; the inlet chamber is internally provided with a high-pressure gas inlet tube; the outer end of the high-pressure gas inlet tube is arranged outside the inlet chamber, and the inner end of the high-pressure gas inlet tube is connected with at least one straight tube which is in parallel with the central axis of the Venturi tube mixer; the other end of the straight tube is provided with a high-pressure gas shower nozzle, and the outlet of the high-pressure gas shower nozzle is arranged in the Venturi tube mixer; the high-pressure gas inlet tube is also connected with an ejector, the ejector is connected with a liquid storage tank through a connecting tube, and the liquid storage tank is arranged outside the ...

Compressing-deslagging-drilling dust remover for coal pits

The invention discloses a compressing-deslagging-drilling dust remover for coal pits, which relates to a device for ventilation and dust removal in a coal pit. The dust remover comprises a Venturi tube mixer, wherein the Venturi tube mixer comprises a gas inlet chamber, a constricted tube section, a straight tube section and a conical divergent section; a high pressure gas inlet tube is arranged in the gas inlet chamber; the outer end of the high pressure gas inlet tube is arranged outside the gas inlet chamber; the inner end of the high pressure gas inlet tube is connected with at least one straight tube which is parallel to the central axis of the Venturi tube mixer; the other end of the straight tube is provided with a high pressure gas injection head; the outlet of the high pressure gas injection head is arranged in the Venturi tube mixer; the Venturi tube mixer is also provided with a water inlet tube; the water inlet tube is provided with a valve; the inner end of the water inlet ...

Rib drill rod

The invention relates to a rib drill rod. The drill rod comprises a rod body and a helical blade, wherein the width of the helical blade is 18mm minus or plus 0.5mm. The rib drill rod of the invention has small rotary resistance in drilling process, deslagging effect is good, and screwing and unscrewing efficiency is high, thus being applicable to various stratums.

Fixed-point grouting drilling tool and method

The invention provides a fixed-point grouting drilling tool and method. The drilling tool comprises a reducing connector, a safety connector, a check valve, a grout stopper, a pressure limiting valve and a guide head which are sequentially connected from back to front. The method comprises the steps of determining the grouting depth and the setting position, lowering a drillable grouting drilling tool, setting a grout stopper, grouting under pressure, lifting and washing a drilling rod outwards, waiting for grout setting and cleaning holes. Fixed-point setting is achieved through the grout stopping device, the flow direction of grouting grout is controlled through the pressure limiting valve, the drilling tool is matched with the high-pressure sealing drilling rod, fixed-point grouting of the long-drilling-hole fault zone (fracture zone) stratum can be achieved, waste caused by full-hole-section grouting is avoided, the drilling construction efficiency is improved, and the drilling construction ...