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

The invention discloses a thin ore-body mechanized highly-layering continuous mining method. The method comprises the following steps: (a) a vein division stage: dividing a vein into a plurality of parallelogram ore blocks by utilizing 15 to 20 percent gradient slope ramps along the direction of an ore body; (b) arranging a pedestrian ventilation raise and a filling raise, and pouring an artificial fake bottom; (c) carrying out layering extraction from an undercutting layer of a stope room, and forming a complete in-vein slope ramp; (d) dividing the stope room into a rock drilling working face, an ore production working face and a filling working face, wherein the three working faces are alternately operated in parallel; (e) carrying out layering operation on a stope, wherein the layering operation includes rock drilling, explosive loading, detonation, ventilation, prying, ore discharging, ore powder clearing, arranging of an on-the-way ore chute, filling, stope support and laying of a concrete soleplate; (f) recovering a bottom column after the stope room is extracted. By adopting the method, the slope ramp stope preparation in the vein, fully mechanized operation and highly-layering filling can be realized. The method has the advantages of high mining safety, small mining-cutting ratio, small ore loss and depletion and high production efficiency.

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 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 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, theprimary 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 relates to an downhole mechanized continuous mining method for hard mineral aggregates. The downhole mechanized continuous mining method includes forming a conveying channel, a working face channel and a power channel, which are communicated in sequence, around a region block where a to-be-extracted ore body is located, wherein one end of each of the conveying channel and the power channel leads to the ground, and one side face, facing the working face channel, of the region block is a working face mining ore wall; initially weakening the ore body of the region block; dividing different ore layers on the working face mining ore wall according to the different grades of the mineral aggregates, mining the one layers by a cylindrical mining machine one by one, weakening a near-working-face ore body once before mining of each follow-up working face or continuous multiple working faces, performing ore body composition detection once before mining of each working face or the continuous multiple working faces, and dividing different ore layers on the working face mining ore wall according to detection results and the grades of the mineral aggregates. The downhole mechanizedcontinuous mining method has the advantages that the grades of the mineral aggregates can be improved, the extraction cost can be reduced, the mining economy is high, and the method can be applicableto mining of the hard mineral aggregates with different rigidities.

The invention discloses a segmental filling mining method for inclined medium-thick ore bodies, the steps of which are: stope structure and ore block layout, mining alignment and cutting, mining, stope ventilation, stope filling, and ore pillar recovery. The overall box-column frame bearing structure of "rhombic stope + mine pillar" is adopted to ensure the stability of the mining roadway and reduce the impact of mining and cutting engineering on stope mining. Divide the stope into a rhombus structure to improve the stability of the stope, combine the deep hole mining in the diamond stope with large structural parameters and the shallow hole mining with the upward horizontal layered filling method, improve the production capacity and efficiency of the stope, and ensure the safety of ore Recycling, reducing ore depletion. Through the staggered arrangement of diamond-shaped stopes up and down, continuous mining without top and bottom pillars is realized. The diamond-shaped stope structure is more suitable for the geometric shape of gently inclined and inclined ore bodies, and reduces the dilution rate of mined ore. Build a bottom trench structure that integrates rock drilling and ore extraction to reduce the amount of mining and cutting work. The inverted V-shaped structure at the top of the diamond-shaped stope is conducive to the bearing of the filling body and reduces the requirements for filling and top connection.

A mining method for thick and large ore bodies, comprising the following steps: a stope is arranged vertically in the direction of the ore body, divided into stages on the vertical height, a mining quasi-raise is arranged in the center of the stope, and an annular transport road with a cutting trench ore structure is arranged at the bottom of the stope , the lifting chamber is arranged on the top of the stope; the down-the-hole drilling rig drills annular horizontal deep holes from both sides of the patio, concentrates rock drilling, blasts in stages, strengthens the ore extraction, and then fills. The invention has the advantages of less mining and cutting engineering, high degree of mechanized operation, high production efficiency, large production capacity, no need for personnel to enter the stope for operation, and good safety conditions.

The invention belongs to the field of oil well drilling and workover development, and particularly relates to an oil well sand removal device based on a pulsed jet technology and a hydrocyclone separation mechanism. The main structures of the oil well sand removal device include a pulsed jet sand pumping system, a ground buffer system, a three-phase hydrocyclone deaeration and sand removal system,a connecting pipeline, a control system and a power system. A jet pump is adopted to change traditional hydraulic sand washing into hydraulic sand suction, during the downhole sand removal operation,working fluid enters the jet pump at a high speed from a working fluid inlet pipe and passes through a throat pipe of the jet pump at a high speed, a low pressure area in which the pressure is lowerthan the pressure in a well is formed inside the throat pipe, so that mixed fluid mixed up with a large amount of sand is sucked into the jet pump, and high-speed fluid does not carry part of oil gas,sand and the like to rush into an oil reservoir to damage the formation structure and affect the exploitation of petroleum and the like; and the system can realize the intelligent control over a whole sand removal system, greatly reduces the labor intensity of workers and improves the sand removal efficiency of a downhole and the yield of an oil well.

The invention belongs to the technical field of buildings, and relates to a continuous excavator digging arm assembly. The technical problem that digging efficiency is low in the prior art is solved. The continuous excavator digging arm assembly comprises a digging arm. A digging bucket fixing rack is fixed to the side wall of the end of the digging arm. A digging bucket is connected in the digging bucket fixing rack in a rotating mode. A driver is fixed to the side wall of the digging bucket fixing rack. The driver is connected with the digging bucket so that the digging bucket can be driven to rotate circumferentially. The continuous excavator digging arm assembly can be used in an excavator; the driver can drive the digging bucket to rotate in a circulating mode, and thus the excavation speed is increased; the bucket can achieve continuous digging, and a conveying belt mechanism can continuously convey materials excavated by the bucket.

The invention relates to a natural caving mining method of rounded table-shaped ore accumulation. The rounded table-shaped ore-accumulating trough is arranged in a determinant manner, the top surface of the rounded table is used as the entrance of the caving ore, and the lower top surface of the rounded table is connected to the chute as the ore outlet, which can make the natural The caving ore falls into the ore-gathering tank of the inverted round table and slides into the chute, which has the advantages of reducing operation links, reducing operating costs, and realizing continuous ore extraction. It is suitable for mining metal mines.

The invention discloses a multilayer inclined ore body ore and waste separation collaborative mining method. An interlayer serves as an ore body in the ore body mining process, the mining is conductedaccording to the continuous thick large ore body, a conventional low-efficiency layered independent stoping mode is changed, a high-efficiency deep hole is adopted to conduct rock drilling, the ore body and the interlayer are orderly caved by themselves, the ore which is caved is completely sent out, and the waste rock of the interlayer which is caved is reserved at the bottom of the interior ofa stope and serves as the filling waste rock. The footwall ore body is extracted, then a goaf region which is reserved by the mining of the bottom ore body is utilized to serve as a free space, the interlayer is caved at one time, the waste rock which is caved is completely reserved inside the goaf region, the surface of the waste rock is treated, and the ore and waste separation is achieved. Thegoaf region which is formed by the caving operation of the bottom ore body and the interlayer is utilized to serve as a blasting compensation space of the stoping operation of the hanging wall ore body, the large-scale ore caving operation is carried out, and then the large-scale ore removal is conducted. The multilayer inclined ore body ore and waste separation collaborative mining method can achieve the safe efficient and waste-free mining of the multilayer inclined ore body.

The invention discloses a concrete modular gob-side roadway support structure for mining without coal pillars, which belongs to the technical field of mineral resource mining; on the basis of the technology of flexible mold concrete gob-side roadway retention, a concrete modular gobside roadway for mining without coal pillars is proposed. Empty roadway support structure, the concrete modular wall consists of three parts: the upper roof unloading module, the middle wall layer module, and the lower foundation module, wherein the roof unloading module includes the roofing intermediate concrete module and the roofing concrete module 1. A concrete module connected to the roof gap, the top surface of the wall layer module is provided with a plurality of strip-shaped semicircular protrusions and semicircular grooves to prevent the module from sliding; The number of excavated roadways reduces the cost of roadway maintenance, and the modular concrete can be recycled and reused, which greatly reduces the support production cost.

The invention discloses a continuous mining method of a medium-thick heavy pitch ore body empty field. The continuous mining method includes the following steps: dividing an extraction area and extraction units in the extraction area; determining the total extraction sequence of the extraction area; generally arranging the mining preparation project of the extraction area; cutting and strengthening the mining extraction units; constructing a temporary pillar recovery safe mining environment; recovering temporary pillars step by step. The continuous mining method of the medium-thick heavy pitch ore body empty field can achieve safe, efficient and low-cost mining of the ore body and adopts sectional step-by-step mining; chambers in the extraction area with sectional empty fields are extracted, then pillars in the extraction area are extracted on the basis of building the safe mining environment, so continuous mining in the area is achieved, and the continuous mining method can be applied to the non-consolidated filled mines with allowable surface subsidence, especially is applicable to medium-thick heavy pitch ore body resource extension mining, and can achieve continuous mining.