52 results about "Hydraulic mining" patented technology

The invention discloses a coal and gas co-mining three-dimensional physical simulation comprehensive experiment system, and belongs to the technical field of coal and gas safe co-mining. The system comprises a box, a hydraulic mining unit, a hydraulic loading unit, a ventilation roadway unit, a gas injection control unit, and a test unit. The first surface and third surface, which is opposite to the first surface, of the box are both provided with a gas testing hole. The second surface of the box is provided with an air inlet hole and an air return hole. The fourth surface of the box is provided with a wire outlet hole. The hydraulic mining unit comprises parallelly arranged hydraulic cylinders and support steel bars, and two hydraulic cylinders and the bottom of the box connect and support one steel bar. The hydraulic loading unit comprises a loading frame, which is arranged on the guide rails of the box. The guide rails are arranged on two sides of the box. The ventilation roadway comprises a roadway and a ventilating machine. A high pressure steel bottle in the gas injection control unit is communicated with a multi-way air distribution cabinet through an air distribution pipe, the air distribution pipe is communicated with a sub-pipeline; and the test unit comprises a gas testing unit, a stress testing unit, and a slight shock testing unit.

The pressure cell device according to the invention serves for measuring hydraulic pressures in hydraulic mining devices in an inherently secure service region. It is provided with a connection element which can be connected to a pressure reception connection and with a sensor housing, on the inside of which is arranged a hydroelectric pressure transducer which is pressurised by the hydraulic pressure present at the pressure reception connection and converts this into an electrical signal. So as to ensure high measurement accuracy over a long operating period, without it being necessary to have exchanges of the pressure transducer or its new calibration, it is provided according to the invention that the pressure transducer comprises a ceramic pressure measuring cell.

The invention discloses a large-tonnage hydraulic mining vehicle braking system which comprises a hydraulic braking unit, a hydraulic cooling unit and a cooling control system. The hydraulic braking unit comprises a hydraulic oil tank, a double-way prefill valve, a double-way braking valve, a parking brake handle valve, a first hydraulic pump, a first filter, a first overflow valve, a front axle braking energy accumulator, a rear axle braking energy accumulator, a front axle brake, a rear axle brake and a parking brake. The hydraulic cooling unit comprises a cooling fluid tank, a second hydraulic pump, a second filter and a second overflow valve, and the cooling control system comprises a controller, a first temperature sensor, a second temperature sensor, a third temperature sensor, a fourth temperature sensor and a relay. The invention further discloses a large-tonnage hydraulic mining vehicle braking method. The large-tonnage hydraulic mining vehicle braking system is novel and reasonable in design, convenient to achieve and safe and reliable in braking, ensures the vehicle safety, is good in practicability, good in usage effect and suitable for popularization and usage, and the brake is good in cooling effect.

A mining system for extracting ore using directional chilling techniques to obtain access to the orebody. Spaced-apart roadways are formed in the ore formation, with a downhill roadway being lower in elevation than the other roadway, and the downhill roadway having a ditch therein draining downhill. A borehole is formed between roadways in the ore formation using the directional drill bit, and then the end of the drill string is equipped with a jetting nozzle. The jetting nozzle is moved within the borehole to erode the formation and mine the ore. In one embodiment, a slurry of mined ore and jetting fluid flows as a slurry down the intersection of the mined face and the floor towards a ditch formed in the downhill roadway. In another embodiment, a slurry of the mined ore and the jetting fluid flows down the borehole, and then down the ditch formed in the downhill roadway. In each case, the ore flows down the downhill roadway to a sump. From the sump, the ore is carried to the surface for transportation and eventual refining or use.

The invention discloses a mechanical type telescopic water gun based on gear and rack transmission. The mechanical type telescopic water gun mainly comprises a high pressure water pipe, an upper hydraulic pipe, a hydraulic pipe high-pressure rotary connector, a high-pressure water pipe rotary connector, racks, an eccentric adapter locking bolt, an eccentric adapter, a right-angle connector, an ejection rod, the water gun, a water gun high-pressure rotary connector, a sliding plate, gears, brake plate protective plates, a lower hydraulic pipe, a hydraulic cylinder and a brake plate, wherein ina hydraulic mining process, the high pressure water pipe is lowered according to a required stretching angle of the water gun; when the water gun reaches the set stretching angle, a brake system control valve is turned on to enable the brake plate to brake the gears, so that the stretching angle of the water gun can be fixed, and rocks are crushed. According to the mechanical type telescopic watergun disclosed by the invention, the stretching angle of the water gun is freely adjusted, and the water gun is conveniently stretched and retracted; a distance between a spray nozzle of the water gunand a mining layer is controlled according to the design, and the problem that high pressure water energy is severely weakened because of submerged jetting is solved, so that an aim of increasing anenergy utilization ratio of high-pressure water jetting is fulfilled, and finally, the mining efficiency is improved.

The invention discloses an electrically controlled single-action telescopic drilling tool for borehole hydraulic mining. The telescopic drilling tool consists of a high-pressure water delivery system, a power transmission system, an electrically controlled single-action system, a water gun arm extending-retracting system and a slag discharging pipeline. The designed water gun can stretch out for the design distance along the radial direction, so that the range of borehole hydraulic mining is greatly widened, and the production efficiency is improved. According to the power transmission system, the rotating angle and speed of a stepping motor can be accurately controlled by a computer, so the opening angle of the water gun can be accurately controlled, and the water gun can stably extend and retract by utilizing a transmission mode of a ball screw. Moreover, the drilling tool is provided with the electrically controlled single-action system, the rotation torque of the drilling tool is provided by the stepping motor of the electrically controlled single-action system instead of a drill stem, and a phenomenon that a power transmission cable is damaged in the process of rotating the drill stem is avoided.

The invention discloses an electronic control telescopic drilling tool for borehole hydraulic mining. The electronic control telescopic drilling tool for the borehole hydraulic mining is composed of a high pressure water conveying system, a power transmission system, a hydraulic giant telescopic system and a deslagging channel. A hydraulic giant of the electronic control telescopic drilling tool can stretch out for a designed distance in the radial direction, the range of the borehole hydraulic mining is enlarged greatly, and production efficiency is improved. The electronic control telescopic drilling tool for the borehole hydraulic mining has the advantages that the rotating angle and speed of a stepping motor can be controlled accurately through a computer, the opening angle of the hydraulic giant can be controlled precisely, and the stretching and retracting actions of the hydraulic giant are stable through the transmission mode of a ball screw.

The invention relates to the manufacturing field of a mining machine, in particular to a simple hydraulic mining machine. The simple hydraulic mining machine is characterized in that a high-pressure hydraulic pump unit (3), a front mixing type abradant continuous mixing device (4), a control operating platform (5) and a wastewater recovery processing system (6) are fixed on a self-propelled flat car (7) to form the body of the machine; and a hydraulic cutter moving mechanism (1) is connected with the body through a water sand mixing transport pipe manifold (2). The simple hydraulic mining machine which has the advantages of environmental protection, energy conservation, small size, light weight, low cost, high efficiency, safety and reliability can meet the requirements of extracting lump ores, and improve the labor intensity and working environment of operators.

The invention relates to the manufacturing field of mining machinery, in particular to simple and convenient hydraulic mining method and equipment, characterized in that high-pressure hydraulic cutting equipment is adopted to cut ores on extracting surfaces into a plurality of relatively regular autonomous blocks in geometry regions, and then the ores in the form of the relatively regular autonomous blocks in the geometry regions are broken by a simple ore breaking tool to fall off the ground. The simple and convenient hydraulic mining equipment is characterized by comprising the high-pressure hydraulic cutting equipment and the simple ore breaking tool which are separate mutually and are separately used. The simple and convenient hydraulic mining method and equipment have the advantages of environment protection, energy saving, small size, light weight, low cost, high efficacy, safety and reliability, and can meet the requirement of exploiting large ores and also improve the work intensity and the working conditions of operators.

The invention provides a shortwall hydraulic mining method along strike and belongs to the technical field of coal mining. The mining method is used for solving the problems of difficult face ventilation, serious gas harm, imperfect ventilation system, poor operation safety, unavailability for coal seams with high gas and serious spontaneous combustion tendency, relatively narrow application range, low recovery ratio and the like of the traditional hydraulic mining methods. According to the shortwall hydraulic mining method along strike, stope ventilation is focused and the arrangement of a hydraulic mining tunnel and the support pattern of the working face are improved, and therefore, a mining method conforming to ventilation and gas control requirements is established. The shortwall hydraulic mining method along strike is reasonable in process design, safe and reliable, and capable of well meeting the requirements of the underground hydraulic mining operations; as a result, the effective support for an exposed roof on the hydraulic mining face and the reasonable ventilation of the working face are realized, and the coal mining efficiency and the operational safety are remarkably improved.

The invention discloses a spherical drain water collector for hydraulic mining. The spherical drain water collector includes a spherical water collector body, a plurality of drainage holes are formedin the water collector body, an upper connecting pipe is formed at the top end of the water collector body, and a lower connecting pipe is formed at the bottom end of the water collector body. A semispherical lower shell is fixed to the lower connecting pipe in an inserting-sleeving mode, the outer side of the water collector body is sleeved with the lower shell in an inserting mode, and a horizontal and annular lower retaining side is formed on the upper side edge of the lower shell. The upper connecting pipe is sleeved with a semispherical upper shell in an inserting mode, an opening of theupper shell faces down, a horizontal and annular upper retaining side is formed on the lower side edge of the upper shell, an annular floating ring is fixed to the upper end face of the upper retaining side, and a limiting ferrule is fixed to the upper connecting pipe and located on the upper side of the upper shell in an inserting-sleeving mode. The spherical drain water collector for hydraulic mining is simple in structure and conducive to the drainage in a mine tunnel, and at the same time, the blockage condition can be reduced.

The present invention relates to a raking support device for a multi-functional coal mining hydraulic protective arm. The device includes: an overturning cover beam, an overturning cover beam jack, a top beam, a hydraulic column, a cover beam, a front connecting rod, a rear connecting rod, a base, Scraper conveyor, protective arm support jack, energy-absorbing protective plate, protective arm, rake coal hopper jack, telescopic arm jack, telescopic arm, rake coal hopper, the flip cover beam is connected with the flip cover beam jack, the flip The cover beam, the overturn cover beam jack, the hydraulic column, and the cover beam are respectively connected with the top beam, the cover beam is connected with the front link and the rear link, and the hydraulic column, scraper conveyor, front link, rear link and The base is connected, the telescopic arm jack is connected with the telescopic arm, the protective arm support jack is connected with the protective arm, the protective arm is connected with the energy-absorbing protective plate, and the protective arm is arranged on the multifunctional coal mining hydraulic protective arm. Rake mount bracket unit front.

The invention discloses a spherical draining and water-collecting device for hydraulic mining. The spherical draining and water-collecting device comprises a spherical water collector. Draining holesare formed in the water collector. An upper connecting pipe is formed at the top end of the water collector, and a lower connecting pipe is formed at the bottom end of the water collector. A hemispherical lower shell is fixed to the lower connecting pipe in an inserted-sleeving mode. The upper connecting pipe is sleeved with a hemispherical upper shell in an inserted mode. An annular upper retaining side is formed at the side edge of the lower end of the upper shell. An annular lower retaining side is formed at the side edge of the upper end of the lower shell. An inclined annular flanging isformed at the outer side edge of the upper retaining side. A spherical sealed body can be formed by the upper shell and the lower shell. A plurality of inserted-connecting blocks are formed on the inner wall of the upper end of the upper shell. A plurality of vertical guiding grooves are formed in the outer wall of the upper connecting pipe. The inserted-connecting blocks are connected into the guiding grooves in an inserted mode. Pressure springs are arranged in the guiding grooves. The two ends of the pressure springs abut against the inserted-connecting blocks and the inner walls of the bottoms of the guiding grooves correspondingly. According to the spherical draining and water-collecting device, draining in a mine can be facilitated, and meanwhile, the blockage condition can be reduced.

The invention belongs to the technical field of hydrate mining test simulation, and specifically relates to a test system and method for simulating geological deformation caused by hydrate thermal mining, in order to study the occurrence process of geological disasters in the thermal mining process; the system includes a test cabin and a stress control device , temperature control system, geological deformation monitoring system and hydrate mining system, the test cabin is equipped with a hydrate layer and an upper covering layer, the upper covering layer is used to simulate the soil cover above the hydrate; the stress control device is used to apply Stress; the temperature control system is used to simulate the temperature of the deep seabed; the geological deformation monitoring system is used to collect the deformation information of optical fiber components in real time; the hydrate mining system package is used to heat the hydrate layer and collect the decomposed gas hydrate; The invention can obtain mapping data of geological deformation caused by ground stress, temperature during mining, and mining efficiency, and provide reliable parameter guidance for hydrate mining.