67results about How to "Reduce the amount of mining and cutting" patented technology

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 novel mining method of gently-inclined thin and medium thickness ore bodies. According to the method, ore bodies in one stope are stoped by dividing the stope into two stope areas through steps: firstly, stoping is performed at the stope area (1) by using a pillarless sublevel caving method: the ore bodies are directly caved in single sublevel by using medium-length blastholes; a certain empty area formed after ore removal is used as a free surface for stoping of the stope area (2); then, the stoping is performed at the stope area (2) by using a blasting force carrying mining method; fan-shaped medium-length blastholes are arranged in a manner perpendicular to the ore body tendency, and are filled with powder according to sections, the decking parts are the parts from the lower disc boundaries of the ore bodies to the hole bottoms; the empty area formed during the stoping of the stope area (1) is used as a free surface for blasting row by row; ores in the stope area (2) are thrown in the empty area by using the blasting force. The method integrates the pillarless sublevel caving method and the blast force carrying mining method, so that the supporting difficulty and the workload are reduced, the operation is safer, the mining cost is low, and the labor productivity is high.

The invention discloses a diagonal ore-break-down medium-length hole mining method for a steeply-inclined thin vein ore body. The method comprises the following steps: arranging a stope according to the strike of the ore body, dividing rooms, pillars and sections according to the inclination direction of the ore body and arranging a level haulage roadway along the vein of the ore body from the footwall of the ore body; driving ore-drawing crosscuts into the ore body from where the level haulage roadway is located; horizontally arranging an undercutting roadway along the vein and parallely driving rock-drilling prospecting rises along slant height; arranging ore drop shafts to abut against the haulage roadway; starting stoping from one side of the stope, stopping stoping when the undercutting roadway is driven to the position of the first rock-drilling prospecting rise and then driving the rock-drilling prospecting rise; allowing a medium-length hole drilling machine to gradually travels from undercutting roadway to rock-drilling prospecting rise, drilling medium-length upward blast hole, carrying out denotation and drawing ore out from the bottom ore-drawing crosscuts; and after the first rock-drilling prospecting rise reaches a certain position, continuing driving the undercutting roadway until the position of the second rock-drilling prospecting rise is arrived at, carrying out medium-length hole mining, and repeating the above-mentioned operations until stoping of the stope is completed. The diagonal ore-break-down medium-length hole mining method has the advantages of high production efficiency, great production capacity and good operation security.

The invention discloses a full-staged combination drilling with blasting mining method. A stage haulage roadway, an ore drawing access road and a cutting undercut roadway are arranged at the bottom of a room. The ore drawing access road serves as a haulage channel of caved ores in the whole stage. The undercutting roadway serves as a construction space of a fan-shaped medium-depth hole on the lower portion, the fan-shaped medium-depth hole is drilled upwards, and after blasting, trench undercut is formed. A cut raise is formed through one-time blasting of a large-diameter deep hole, and then a cut groove is formed through the cut raise to serve as an ore caving compensation space. A drilling chamber or a roadway which communicates with a transverse drift is formed on the top of the room to serve as a construction space of the large-diameter deep hole on the upper portion. The large-diameter deep hole and the fan-shaped medium-depth hole at the lower portion are combined for drilling. After the large-diameter deep hole and the fan-shaped medium-depth hole drilling is finished, the cutting groove serves as a free face and combined, or separate charging is conducted to blast for lateral caving. The mining and cutting engineering quantity is small, the preparation time of stoping is reduced greatly, the production capacity of the room is large, and the investment cost is saved.

The invention discloses a medium-length hole raise mining subsequent filling method. Ore blocks are arranged in the ore body direction, and divided into stages in the vertical height. The two ends of the ore blocks are provided with mining preparation raises. The bottoms of the ore blocks are provided with a flat bottom ore removal structure. The upper portions of the ore blocks are provided with a raise boring machine chamber. A raise boring machine is adopted for drilling mining preparation raises; a raise boring machine lifting system is adopted for lifting and drilling rock and exploding a working platform, a down-the-hole drill drills horizontal parallel or annular medium-length hole blast holes from the two sides of the raise, and concentrated rock drilling, split blasting, concentrated ore removal and subsequent filling are carried out. The method is mainly applicable to heavy pitch thin and medium thickness ore bodies, the problems of a shrinkage method, a sublevel open stop mining method or a cut-and-fill mining method are solved, and the method has the advantages that the mining and cutting work amount is small, the stope mechanical operation degree is high, production efficiency is high, production capacity is large, workers do not need to enter a stope for work, and safety conditions are good.

'pre-control roof open stoping spallation subsequent filling mining method' is characterized in that advantages of backfill mining method and spallation mining method are adopted, respective disadvantages are made up, a bran new mining technology is formed, and the method has the advantages of low ratio of mined tonnage to development, high efficiency, good safety and strong practicability and is especially applicable to the mine industry.

The invention discloses a recovery method of underground mine goaf remaining studs. The recovery method comprises the following steps that an ore removal roadway is tunneled into a stub (16) on one side of a middle section transportation roadway (1) to reach an ore body hanging wall, and the top of the ore removal roadway is expanded by adopting a fan-shaped medium-length hole to form a horn-mouth-shaped bottom structure; a cutting raise (12) and a pedestrian ventilation raise (3) are arranged in the stud pillar hanging wall ore rock contact face and the footwall surrounding rock respectivelyand communicate with an upper middle section air return roadway, layered connection ways (9) are tunneled in the pedestrian ventilation raise (3) in the vertical direction at intervals of a certain height to reach the stud pillar footwall boundary, the operation links that upward parallel blast holes (11) are drilled layer by layer in circulating mode one by one from bottom to top, charging blasting, forced ventilation and caving ore discharging are conducted till whole interval column is completely mined, then the caved ore (7) is completely discharged through a carry-scraper and fills the goaf, the recovery rate of the stud ore is increased, the ore dilution rate is reduced, and the working environment of a working surface is improved.

The invention discloses a gently-inclined broken thin lode medium-depth hole mining method. According to the mining method, the sizes of ore rooms and ore pillars are determined according to the mechanical properties of rock mass and the explosion power cast blasting energy distance so as to rationally divide and arrange the ore rooms and the ore pillars; medium-depth blast holes are drilled in the ore pillars, and ore mining is performed; and by combing explosion power transportation and mechanical transportation, the caving ore is transported, such that the safe and efficient mining is performed on the gently-inclined broken thin lode. According to the present invention, by using the medium-depth mining ore extraction method, the operation of the construction personnel under the stope roof can be avoided so as to ensure the safety of the construction personnel and improve the production capacity and the production efficiency of the stope; by using the explosion power transportation technology, the caving ore transportation efficiency is improved, the mining cutting engineering arrangement is optimized, the mining cutting engineering amount is reduced, and the mining process is simplified; and with the method, the problems of low production efficiency, high safety risk of the construction personnel and the like of the traditional room and pillar method can be effectively improved, and the wide practicality is provided.

The invention discloses an approach open stope subsequent filling mining method for a gently inclined medium-thick ore body. The approach open stope subsequent filling mining method for the gently inclined medium-thick ore body comprises the following steps that panel layout is carried out, specifically, panel dividing is carried out in the direction of the ore body, and columns are arranged between panels; a plurality of strip-shaped approach stopes are arranged in each panel in the ore body inclination; ore removal roadways are arranged at the bottom layer outside the vein of the ore body inthe ore body inclination, ore removal transverse drifts are arranged at the bottom of ore pillars reserved at the lower ends of the panels, drilling roadways are arranged at the bottoms of the strip-shaped approach stopes in the panels, and the ore removal transverse drifts and drilling roadways separately communicate with the ore removal roadways; filling ventilation connection channels are arranged at the positions, near the upper panel vein of the ore body, of the inner parts of the columns to connect the strip-shaped approach stopes; extraction and ore removal are carried out, specifically, medium-deep hole drilling trolley is used for drilling upward fan-shaped blast holes in the drilling roadways, and centralized charge blasting is carried out; the blasted ore is discharged to a jack shaft through a scraper through the drilling roadways, the ore removal roadways and the ore removal transverse drifts; and filling is carried out, specifically, once the extraction of the strip-shaped approach stopes is completed, one-time filling concentrating is carried out. The approach open stope subsequent filling mining method for the gently inclined medium-thick ore body greatly reduces the amount of mining and cutting work and has high ore removal and transportation efficiency.

The invention provides a mining method which has a small mining work amount and is easy and convenient for ore removal specific to the situation that a complete ore block cannot be formed in a region where upward pinch-out of an inclined thin ore body occurs. The mining method mainly comprises the following steps of: digging a short ore drawing jack shaft upwardly on one side of a travelling roadway; digging an electric rake road along the lateral trending direction of a foot wall of the ore body; digging funnel through holes of 1 meters on the electric rake road at the intervals of 5 meters; digging ore collecting funnels from the funnel through holes; and enlarging the funnels into a funnel shape, and forming undercutting and raise to complete major mining and cutting work. Ore automatically flows into the electric rake road through the ore collecting funnels, is raked into the short ore drawing jack shaft through an electric rake, and is intensively raked into the short jack shaft through the electric rake road, so that the length of a funnel neck can be reduced effectively, the accurate mining work amount is reduced, and a better economic benefit is achieved.

The invention provides a gently inclined medium-thick-thick large ore body remaining ore stopping method which is applicable to stopping of gently inclined medium-thick-thick large ore body remainingore with a high ore grade and a high value. According to the method, firstly, an original room-and-pillar method goaf is filled with a high-intensity cemented filling body; and during filling, a vacant area being 1.5 to 2 m on the top is reserved to be used as a free surface and a compensation space for upper layer ore body stopping. According to the thickness of an upper layer ore body, a shallowhole room-and-pillar method or a point pillar type upward layered filling method is used for stopping the upper layer ore body according to different conditions, and roof-contacted filling is performed; and then, an upward layering drift-and-fill method is used for stopping a lower layer ore body. Compared with the prior art, the gently inclined medium-thick-thick large ore body remaining ore stopping method has the advantages of safe stopping operation, high ore recovery rate, low dilution rate, maneuverability, flexibility and the like.

The invention discloses a structural arrangement of multi-stope synchronous mining of steeply inclined thick and large ore bodies with stable ore rocks. The structural arrangement is divided into a plurality of panel areas (20) along the ore body trend, and the panel areas (20) are divided into 4 stopes; a vein-crossing transportation roadway (5) is tunneled in the center position of the bottoms of the panel areas (20); a plurality of ore removal access ways (11) are tunneled at two sides of the vein-crossing transportation roadway (5) to penetrate through all stopes and to be served as shoveling and transporting passages during stope ore removal; and an ore collecting trench (15) and a bottom pulling space (7) are arranged at the bottom of each stope. All stopes in the panel areas (20) share one vein-crossing transportation roadway (5). The structural arrangement provided by the invention has the advantages that only one vein-crossing transportation roadway needs to be arranged in thecenter of the bottoms of the panel areas, and all stopes in the panel areas share the vein-crossing transportation roadway, so that the thousand-ton mining and cutting ratio is reduced by about 35%,the mining preparation work specific gravity is reduced by about 29%, and the mining and cutting engineering quantity is effectively reduced.

The invention provides a stoping blast mining process for a thick and large ore body. Rock drilling roadways of upper and lower layers are arranged in the thick and large ore body in the direction ofthe ore body, and double rows of rock drilling roadways are arranged at each layer. Upward vertical fan-shaped recovery medium-depth holes are formed in each rock drilling roadway, the medium-depth holes of every two rows are subjected to simultaneous line-connection blasting, and in the blasting recovery process, the step-shaped retreat mining from top to bottom is adopted. An original method that a thick and large ore body is subjected to stoping by adopting vertically-arranged rock drilling roadways is changed to the method that the thick and large ore body of a copper mine is subjected tostoping by double rock drilling roadways in the ore body direction, so that the construction amount of mining preparation roadways and deep holes is effectively reduced, the production cost of the copper mine is reduced, and the mining efficiency is high.

The invention discloses a novel mining method suitable for multi-stope synchronous mining of thick and large ore bodies. The method comprises the following steps of: dividing the ore bodies into a plurality of panel areas (20) along the trend of the ore bodies, and dividing the panel areas (20) into four stopes; and a vein-crossing transportation roadway (5) is tunneled in the center of the bottoms of the panel areas (20), a plurality of ore removal access ways (11) are tunneled from the two sides of the vein-crossing transportation roadway (5) to penetrate through all the stopes to serve as shoveling and transporting channels during stope ore removal, and an ore collecting trench (15) and a bottom pulling space (7) are arranged at the bottom of each stope. All the stopes in the panel areas (20) share one vein-crossing transportation roadway (5), the first stope (16) and the fourth stope (19) are stoped synchronously, and after stoping is finished and filling is conducted, the remaining two stopes are mined synchronously. Air flow communication can be achieved, and the working environment of a working face is improved; all the stopes share one vein-crossing transportation roadway (5), so that the mining and cutting work amount is reduced, and the mining production cost is reduced; and one panel area (20) is synchronously mined in two times, so that the ore production efficiencyis improved.

The invention discloses a mining method for stoping inclined extremely-thin mineral veins. The mining method for stoping the inclined extremely-thin mineral veins comprises the steps that mining areasare divided in the direction of an ore body for continuous stoping; a working face is arranged in a forward pseudo-inclining mode; mining is carried out in the unit of pseudo-inclining strips, and the bottoms of all the strips are cut firstly; a rubber cushion is laid on waste rock after waste discarding is completed, and then upper-layer ore is blasted down; bottom cutting blast holes are parallelly formed in the inclining direction of the ore body, and the blasting direction points to one side of a mined area; ore caving blast holes are parallelly formed in the direction of the ore body andare perpendicular to the bottom cutting blast holes, and the blasting points to an ore body bottom plate and the lower parts of the mining areas; and directional pinpoint blasting is carried out by means of sublevel millisecond ignition. According to the mining method for stoping the inclined extremely-thin mineral veins, improvement of safety of the working face is facilitated, the ore recoveryrate and mined ore grade of the mining of the inclined extremely-thin mineral veins are improved, the stope preparation work amount is less, and the mining cost is low.

The invention provides a hydraulic fracturing comprehensive mechanized continuous mining method for gently inclined hard rocks. The hydraulic fracturing comprehensive mechanized continuous mining method for the gently inclined hard rocks comprises the following steps of (1) determining ore block structure parameters; (2) arranging a mining and cutting project, and forming a mining working face; (3) forming fracturing holes in the mining working face; (4) hydraulically fracturing an ore body in the fracturing holes; (5) adopting comprehensive mechanized stoping; and (6) filling a goaf. Compared with the prior art, when the hydraulic fracturing comprehensive mechanized continuous mining method for the gently inclined hard rocks is used for mining the hard rocks, the mining and cutting engineering amount, the fixed number of workers and the ventilation energy consumption are greatly reduced, and the production efficiency is improved.

The invention belongs to the technical field of metallic mineral deposit underground mining methods and discloses a gently inclined-inclined medium-thick orebody mining method which aims to slove the problems existing in inclined and gently inclined orebody mining in the prior art. The method comprises the steps of ore block division and ore block division section, each section is subdivided into a section ore room and a section top column, an intraminal diagonal slope path is tunnelled from a stage transport roadway to an upper stage transport roadway and one ore-pass is arranged at an opening of each section of the intraminal diagonal slope path, a rock drilling trolley enters the section ore rooms through the intraminal diagonal slope path to drill ore room mining blast holes and enters section ore room mined-out areas through the intraminal diagonal slope path to drill top column mining blast holes to the section top columns, collapsed top column ore is transported to the ore-passes through a scraper, and permanent interstitial columns are left every 5-8 m. According to the gently inclined-inclined medium-thick orebody mining method, by means of the advanced rock drilling trolley technology, the gently inclined-inclined medium-thick orebody mining method has the advantages of a sublevel open field method, a room column mining method and the large-section roadway tunneling technology at the same time and has the advantages of being simple in process, small in mining cutting engineering quantity and the like.