33results about How to "Realize continuous mining" patented technology

The invention discloses a stepped on-pillar continuous filling mining method for deep well super high large breaking ore body panel. An ore body is divided into a front part and a rear part in a super high large breaking ore body center by an transportation roadway, then the front part and the rear part are respectively divided into a plurality of panels, no pillar exists between pillars, each panel is partitioned into a primary extracting drift and a second extracting drift, the panels in the front part are extracted at first and then the panels in the rear part are extracted, the front and rear panels are extracted in a stepped manner, each production technology is carried out in the same level, and procedures can not influence each other; after the stop back production is finished, the primary extracting drift is filled with cement and the secondary extracting drift is filled by classifying tailings while roof-contacted filling is ensured; and the primary extraction drift and the secondary extraction drift adopt high strength filling topping, and binding materials are added in the filling tailings so as to improve the compression strength of a topping layer. The invention has the characteristics of high extraction safety, small loss and dilution, high mechanical degree, large stope amount, large back production strength, high production capability, short back production time and the like.

The invention discloses a medium-length hole mining method in multiple blasting free faces of high dipping thin veins. The medium-length hole mining method is characterized by comprising the steps of: arranging ore blocks along the trend of a core body, dividing the ore body into a medium section and a segment in the altitude; drilling a gate way in the segment and arranging in veins along the ore body; arranging a flat ore removal structure on the bottom along the veins; arranging a cutting raise from one ends of the ore blocks, arranging a manway at the other ends of the ore blocks; and upwards and downwards punching forwards leaning medium-length holes, with the cutting raise as free faces, and blasting caved ores in the segment by multiple free faces, and withdrawing the ore centrally at the bottom. The medium-length hole mining method has the remarkable characteristics of high mining safety, little resource dilution rate, good production continuity, high level of mechanization, low cost, high efficiency, low labor intensity and the like.

The invention discloses a central outside-vein house pillar type combined crosscut two-end inside-vein continuous segment filling mining method for medium-thickness inclined crushed phosphorus ores. The method comprises the following steps: dividing an ore into middle segments, dividing each of the middle segments into panels, dividing each of the panels into segments, dividing the center of each of the segments into ore houses and ore pillars, and dividing two ends of each of the segment along an inside-vein drilling ore-removal level non-pillar into recovery units; adopting a hanging side outside-vein trackless mining system which is formed by a panel ramp, a concentrated ore-removal ore-pass, segment levels at the central outside-vein and shifting to inside-vein at two sides, and an connection lane commonly used by the ore houses and the ore pillars; recovering the ore houses in the middle segments, filling close to back, and recovering the ore pillars; and carrying out parallel operations of technologies comprising drilling, exploding, supporting, ore removal, filling and the like of a plurality of the ore houses to realize continuous mining. The method disclosed in the invention has the substantial characteristics of improvement of the recovery safety and the panel productivity, reduction of the resource dilution rate and the mining-cutting ratio, increase of enterprise benefits and the like.

The invention discloses a diskless region type connection roadway continuous sectional cut-and-filling stoping method shared by a chamber and jambs for an inclined fractured ore body with medium thickness. The stoping method comprises the following steps that: the ore body comprises middle sections, wherein each middle section is internally connected with a fragmented transport roadway along the direction of the ore body by adopting a screw type ramp; the fragments separates the chamber and the jambs in a continuous way; and when the chamber is exploited, the connection roadway is advanced towards the centers of the jambs, the level of the ore drift is advanced along the hanging wall of the ore body till reaching the whole chamber, and the chamber and the jambs share one connection roadway; a filling retaining wall is constructed on the joint of the chamber and the jambs after recovery, the cemented filling is carried on a worked-out section from the upper subsection, in the middle sections, the chamber is recovered first and filled close the back, and then the jambs are recovered; after the jambs are recovered, a filling retaining wall is constructed in the connection roadway after recovery of the jambs, and non-cemented or cemented surfaces with thickness of 1m are used for filling; and continuous mining is realized through a plurality of technological parallel workings including drilling, blasting, supporting, ore removal, filling and the like in one subjection. The method provided by the invention has the remarkable characteristics of low accurate mining ratio, low ore loss factor, safety and efficiency, capacity of increasing enterprise revenues and the like.

The invention relates to a method for constructing a wall body for retaining and protecting a roadway along a goaf by filling a net cage with aeolian sand. The method includes the following steps: firstly, filling the net cage to be filled which consists of a steel wire net cage and geotextile and is closed at four corners and opened at the upper part with the aeolian sand, vibrating and compacting, wherein the aeolian sand has the bearing capacity due to lateral restraint provided by the steel wire net cage and the geotextile; and effectively controlling the rotation and subsidence of roof strata of the retained roadway along the goaf after the wall body for retaining and protecting the roadway along the goaf built by the net cage filled with the aeolian sand is connected to the roof. According to the method for constructing the wall body for retaining and protecting the roadway along the goaf by filling the net cage with the aeolian sand, on the premise of not consuming water resources, the bearing performance of the aeolian sand is fully brought into play, and the effective support from the wall body for retaining and protecting the roadway along the goaf constructed by fillingthe net cage with the aeolian sand to the roof strata of the retained roadway along the goaf is guaranteed, so that the cost of retained the roadway along the goaf in the desertified arid mining areais reduced, the coal resource extraction rate in the mining area is improved, and meanwhile, the influence and damage of mining activities on the water resources and the local ecological environment are reduced.

The invention discloses a method of combining gas replacement with a vibration field for extracting a natural gas hydrate reservoir. The method includes the steps that (1) a CO2 medium injection welland a natural gas production well are deployed on the natural gas hydrate reservoir; (2) partial free gas is extracted, and the pressure of the hydrate reservoir is decreased to 3-5 MPa; (3) a vibrator is put into the hydrate reservoir, and a CO2 medium is injected into the reservoir to achieve replacement of the natural gas in hydrates; (4) the vibrator is continuously or intermittently turned on, and vibration waves are utilized to promote dispersion of CO2 in a settled layer; (5) when the concentration of CO2 in the free gas of the reservoir is unchanged or changes slowly, the work load ofthe vibrator is increased, and the energy of the vibration waves is utilized to generate cracks in a CO2-natural gas hydrate mixed reservoir and the hydrate reservoir; (6) when the concentration of CO2 in the free gas of the hydrate reservoir is lower than 30 mol%, production of natural gas is carried out. By means of the method, the efficiency of CO2 medium replacement for extraction of natural gas hydrates can be improved, and the speed of the CO2 medium replacement for the extraction of the natural gas hydrates can be increased. Meanwhile, the stability of the reservoirs is maintained, anda broad application prospect is provided.

The invention relates to a drum-type continuous excavator, which comprises a power system, a control system and an excavation system, wherein the excavation system comprises a bucket. The invention is characterized in that the bucket is a drum-type bucket, the oblique lower part of the drum-type bucket is connected with the low end of a chain-type closed-loop loading system formed by a driving chain wheel installed at the upper part of a frame, a guide chain wheel installed at the lower part of the frame and a plurality of loading buckets and chains. The invention has the advantages that the continuous excavation can be realized, the operating speed is fast and the work efficiency is high. The drum-type continuous excavator is particularly suitable for construction in sandy soil fields and muddy fields, removal and transportation of construction wastes on construction sites and the like.

The invention relates to a strip mine continuous mining system. The strip mine continuous mining system comprises a mining machine, a transfer loading conveyor and a working face conveyor, the rear end of a middle conveying device of the mining machine is hinged with the front end of the transfer loading conveyor through a front-stage connection mechanism, the hinging axis extends vertically, therear end of the middle conveying device is located on the upper position, universal wheels are arranged at at least one position below the main body of the transfer loading conveyor, the rear end of the transfer loading conveyor is hinged with a back-stage connection mechanism, the hinging axis extends vertically, the back-stage connection mechanism is provided with a back-stage material receivinghopper, the back-stage material receiving hopper is located below the rear end of the transfer loading conveyor, an unloading port of the back-stage material receiving hopper is located above the working face conveyor, the working face conveyor extends left and right, and the back-stage connection mechanism is slidably connected relative to the left and right directions of the working face conveyor. The strip mine continuous mining system can achieve all procedures of cutting, collecting, conveying in a host machine, transfer loading, working face conveying and the like, is low in purchasingand management cost, easy to maintain, and particularly suitable for mining small and medium-sized mine ore deposits.

The invention provides a downward parallel middle-deep hole sublevel fill stoping mining method for a steep and medium-thick hard-to-mine ore body, and belongs to the technical field of mining. The ore body is divided into a plurality of sublevels according to the middle sublevel, stope rooms and stope pillars are divided in the ore body direction, the middle sublevel is divided in the inclined direction of the ore body, sublevel rock drilling roadways are arranged along veins, artificial false roofs and false bottoms are constructed in the sublevel rock drilling roadways in advance, and middle-deep hole stoping ore blocks are adopted from top to bottom. After the stope rooms are mined, the stope rooms are filled with filling materials. After the stope pillars are mined, the stope pillarsare filled with full tailings and/or barren rock powder. The content of particles with the particle size being less than or equal to 30[mu]m in the full tailings for the filling materials accounts for75-77%; the content of the particles with the particle size being less than or equal to 35[mu]m in slag accounts for 86-88%; and an activator is prepared from glauberite and green vitriol with a weight ratio of 1 to (0.5-0.7). According to the downward parallel middle-deep hole sublevel fill stoping mining method, safe, efficient and low-cost mining of the ore body can be realized, continuous mining in an area can be realized, and the sublevel fill stoping mining method is mainly suitable for a gold mine with an inclination of 50-90 degrees and a horizontal thickness of 4-10 m.

A thick and large ore body mining method comprises the following steps that a stope is arranged in the direction perpendicular to an ore body, stages are divided in the vertical height direction, a stope preparation raise is arranged in the center of the stope, an annular conveying channel of a trench ore removal structure is arranged at the bottom of the stope, and a lifting chamber is arranged at the top of the stope; a down-the-hole drill drills annular horizontal deep holes from the two sides of a raise, and centralized rock drilling, fractional blasting, reinforced ore removal and delayedfilling are conducted. The mining and cutting work amount is small, the mechanical operation degree is high, the production efficiency is high, the production capacity is large, personnel do not needto enter a stope for operation, and safety conditions are good.

The invention relates to a mineral aggregate mechanized continuous production method. The method comprises the steps that the area where to-be-exploited mineral aggregate bodies are located is explored firstly to form an underground seam model, mineral aggregate grade level distributing situation data is obtained, primary parameters of mineral aggregate exploitation equipment are determined, a mine shaft is exploited, fitting exploitation equipment is arranged, and continuous exploitation is conducted; when the continuous exploitation is conducted, different seams are divided on a working surface exploitation mine wall according to the difference of mineral aggregate grade levels, or one or more working sections are transversely divided simultaneously, one-by-one seam exploitation is conducted on the working surface exploitation mine wall by using a mining machine according to the sequence from high mineral aggregate grade levels to low mineral aggregate grade level or the mining machine is used for exploiting the working sections one by one in the moving process from one end of the working surface to the other end of the working surface, and the seams are exploited one by one in each working section according to the sequence from high mineral aggregate grade level to low mineral aggregate grade level. The method has the advantages that the grade level of the mineral aggregatescan be improved, the refining cost is reduced, the exploitation economical performance is good, and the method can adapt to the exploitation of hard mineral aggregates with different hardness levels.

The invention discloses a method used for reciprocating impact excavation by arranging a discharge port for discharging, and a reciprocating impact excavator used for implementing the method by arranging the discharge pot for discharging. The reciprocating impact excavator comprises an impact blanking mechanism. The impact blanking mechanism comprises an impact power box, a powered impact component, an impact guiding element, and an impact head; the impact head is composed of a supporting seat, a discharge port frame, and impact teeth, or is composed of the supporting seat and the impact teeth; the discharge port frame is arranged on the supporting seat; the discharge port frame comprises one or more discharge ports; the discharge port is advantageous for discharging material punched out by teeth for impacting the inner material layer; the impact blanking mechanism is arranged on a machine body, a travelling mechanism is arranged on the machine body; the impact head is driven by the powered impact component to complete reciprocating motion, the discharge port is used for discharging materials; so that the machine body is capable of moving smoothly; continuous excavation is realized; a problem that continuous excavation can not be realized because materials clamped between the impact teeth can not be discharged is solved; material collection, material discharge and material charging of the excavator provided with the impact head are realized smoothly; and excavation efficiency is increased.