60results about How to "Save filling material" patented technology

The invention provides an interval skip-mining type filling coal mining method and belongs to the technical field of coal mine filling coal mining methods. The interval skip-mining type filling coal mining method comprises the steps that a first open-off cut is dug at the tail end of a butt entry, a second open-off cut is dug a certain distance away from the first open-off cut, and mining is conducted at the position of the second open-off cut with the wall type system coal mining method after the second open-off cut is well dug; a third open-off cut is dug a certain distance away from the second open-off cut, a gob formed after mining is conducted at the position of the second open-off cut is filled while the third open-off cut is dug, and the rest operation is conducted by analogy till mining is conducted on a mining stopping line. By the adoption of the interval skip-mining type filling coal mining method, mining can be conducted under the condition that the two ends are supported, sequential mining and sequential filling are achieved, the integrity of a base plate of a roof is guaranteed, movement of overlying rock is reduced, and the purpose of surface subsidence control is achieved; after mining with filling is completed, coal pillars left after mining do not need to be filled, filling materials are reduced, and filling cost is reduced.

An obligate cavity channel gob-side entry retaining wall filling method is characterized in that a cylinder hole is obligated on a formwork, a thin-wall steel cylinder penetrates through the formwork, a lane is located on the high position, a goaf area us located on the low position, a filling wall with a cavity is formed after filling, wall using materials are reduced, and wall strength is not influenced. An open-close door is installed at the hole opening, when the lane deforms, cannot normally use and needs to conduct dinting, a large quantity of gangue produced after lane dinting can be thrown to the inside by opening the door, and the lane is distributed in an air return along groove. Due to existence of a coal bed pitch, inbreak gangue surges up the goaf area of the transportation along grooves under the effect of gravity, in addition, side direction breaking is carried out on the top plate during caving, a lateral breaking angle is formed, a space at a button angle of the filling wall enables the inbreak gangue to be unable to achieving a filling area, a great quantity of spaces are left on the filling wall side, throwing gangue directly enters the goaf area under the effect of gravity, and deposit spaces are provided for processing undercover gangue.

The invention discloses a plate intelligent subpackaging method and device, and belongs to the field of plate-type furniture packaging. The plate intelligent subpackaging method comprises the steps: an order of plate-type furniture is obtained, and the subpackaging state of the order is read; when the order is in an un-subpackaged state, plates not needing to be pre-subpackaged and needing to be packaged in a whole cabinet or whole package mode in the order are filtered, the rest of plates are classified according to the thickness, and all the plates in any category are the same in thickness;the plates of each type are arranged and subpackaged sequentially according to the large, middle and small size sequence till each package meets the reference weight and all the plates are arranged; and all obtained package information is preserved, and the order is updated to be in the subpackaged state. The plate intelligent subpackaging device comprises an acquisition module, a classification module, a subpackaging module and an updating module. The working difficulty and burden of packaging workers of a plate-type furniture workshop are greatly relieved, the productivity of the packaging workshop is improved, and the package quality after the plates are packaged is improved.

The invention discloses a method for conducting goaf partial filling according to roof caving characteristics. The method comprises the steps that high-strength filling strips which are perpendicular or parallel to the mining direction are arranged in a goaf according to an initial caving pace of an immediate roof of the goaf to control caving of the immediate roof; multiple rows of high-strength filling monomers with different shapes are arranged among the filling strips at intervals according to the bending deflection of the immediate roof to control deformation of the immediate roof; large-range filling is conducted on positions with special geological structures to control stress concentration points; a high-strength filling body-immediate roof structure control system is formed, and an upper overlying strata is supported by the high-strength filling body and the immediate roof; narrow filling strip goaf-side retained roadways are arranged, the roadway driving workload of the next working face is reduced, and the goaf is filled in a sealed mode. According to the method for conducting goaf partial filling according to the roof caving characteristics, filling materials are saved, and the filling cost is reduced; the filling structure bodies with different shapes are arranged on key positions, the control effect on the roof is good, and a whole-region chain reaction caused by destruction of partial filling bodies is prevented; a large amount of underground space formed through filling can be reused.

The invention discloses an underground selection, screening and stirring integrated gangue cementation construction filling system and method. The system comprises an underground coal and gangue separating device, an underground gangue crushing and screening device, an underground filling material weighing and stirring device, an underground filling material slurry conveying device, an underground filling material slurry casting device and a PLC control device. The filling method comprises the steps that raw coal mined from a driving working face and a mining working face is transported to a raw coal bunker of a mining area, separated clean coal is transported to a clean coal bunker and is lifted by a main well, separated gangues are fed into a gangue crushing machine, and the gangues undergoing secondary smashing are fed into a gangue screening device; various raw filling materials are respectively fed into a burdening hopper, and filtered mine water is added to obtain filling material pulp through stirring after even and drying stirring; the filling material pulp is transported to a filling working face by a stirring transportation truck, then is cast into a filling formwork by a movable filling pump truck and is evenly vibrated by using a vibration device. By adopting the system and method, the mine transportation and lifting pressure is reduced, the working efficiency is improved, and the mining-filling balance of coal mine waste is achieved.

The invention discloses a method for filling a friction stir welding keyhole by using a T-shaped filling block and a bitless stirring head. The method comprises the following steps of: (1) performing chambering on the upper part of the friction stir welding keyhole, machining to form a table conical shape of which the upper side is wide and the lower side is narrow, and precleaning the inner wall of the friction stir welding keyhole; (2) preparing the T-shaped filling block; (3) prearranging the T-shaped filling block in a table conical hole, so that a T-shaped endshield is exposed with a certain height; (4) starting the bitless stirring head to rotate and press, so that the T-shaped filling block is subjected to rotary extrusion towards the keyhole; (5) when the stirring head is pressed to be flush with upper surfaces of workpieces to be subjected to repair welding basically, performing in-situ friction for a certain time; and (6) removing trimmings, so that the filling surface is smooth and beautiful. The method has the advantages that: tools (bitless tools) are easy to design and manufacture, the tools are not needed to be replaced when the keyholes are repaired in batch, the filling material is saved, the keyhole is not thinned or is thinned slightly after being welded, and membranes of the side wall and the bottom are well removed, so that the side wall and the bottom can be combined compactly. The method also can be used for repairing defects of casting surfaces and weld joints.

The invention discloses an extra-thick coal seam stratified non-integral filling mining method. The extra-thick coal seam stratified non-integral filling mining method is used for mining "three-lower"extra-thick coal seam and stratifying synthetically by combing coal quality property and devices, and the stratified height is determined; then methods of upper room column non-integral filling recovering coal pillar and lower strip-type filling and mining are used, coal seams are sequentially mined by the two methods, and the upper layer is mined firstly then the lower layer is mined until the whole layer of coal are mined completely. The extra-thick coal seam stratified non-integral filling mining method makes good use of coal seam instead of artificial false roof, the material wastage is greatly reduced, a filling method realizes non-integral filling, and filling materials are saved; a method of combing mining and filling is realized in the process of mining, in the absence of a coal pillar, solid cemented filling materials are quickly used instead of the coal pillar, sharp change of overlying rock is strictly controlled, the safety of ground buildings is ensured, and the upper andlower structures are matched to control ground depression.

The invention discloses underground filling equipment, an underground filling system and an underground filling method. The underground filling equipment comprises a filling mold frame and an inflatable bag supply device used for supplying inflatable bags into the filling mold frame; the rear portion of the filling mold frame is provided with a mold frame rear opening, and the front portion of thefilling mold frame is provided with at least one mold frame front opening used for clamping the inflatable bags; the inflatable bag supply device is located on the front side of the filling mold frame; and the inflatable bag supply device can process non-inflated and continuous bag barrels into the inflatable bags and push the inflatable bags into the mold frame front opening, and the inflatablebags can seal the mold frame front opening. According to the underground filling equipment, the underground filling system and the underground filling method, the inflatable bags can be added into a filling body, so that a hole is formed in the filling body, the filling material is saved, and the filling cost is reduced.

The invention discloses a compact four-core ribbon cable which is of a flat structure. The center of the cable is provided with three parallel phase cable cores. A plurality of ground cable core conductors are distributed outside the phase cable cores in parallel. Wrapping tape wraps the ground cable conductors. Protecting sleeves wrap the wrapping tape in an extruding mode. The compact four-core ribbon cable has the advantages of being capable of being moved repeatedly, bent and vertically used, compact in structure, small in outer diameter, easy to process, convenient to construct and the like.

The invention discloses a flat four-core composite mineral fire-proof control cable comprising an insulated cable core and a control cable core that are arranged in parallel. Three insulating wire cores are arranged in parallel at the center of the insulated cable core; a plurality of ground wire core conductors are distributed in parallel at the peripheries of the three insulating wire cores; andthe outsides of the ground wire core conductors and the three insulating wire cores are extruded by an inner inorganic mineral metal sheath. A plurality of control wire cores are twisted and then aninner inorganic mineral metal sheath extrudes the outsides of the plurality of control wire cores to form the control cable core. The gap between the insulated cable core and the control cable core isfilled with glass fiber filaments. The outsides of the insulated cable core and the control cable core are extruded by an outer flat inorganic mineral metal sheath. The cable having advantages of compact structure, small outer diameter, and reduced occupied space can be moved repeatedly, be bent, and be used vertically and is also easy to process and convenient to construct.

The invention discloses a method for conducting goaf partial filling according to ground surface subsidence characteristics. The method comprises the steps that the positions of filling bodies are designed according to a ground surface subsidence contour map; complete filling is conducted within a central area range, and a subsidence center is controlled; multiple circles of filling strips are arranged outside the complete filling range, and a larger subsidence region is controlled; multiple rows of filling monomers are arranged outside the filling strips, and a subsidence edge region is controlled; the filling bodies with different shapes are arranged in a goaf in a targeted mode, deformation destruction and ground surface subsidence of a roof are controlled, a filling body-roof structure control system is formed, and deformation destruction and ground surface subsidence of an upper overlying strata are controlled; narrow filling strip goaf-side retained roadways are arranged, the roadway driving workload of the next working face is reduced, and the goaf is filled in a sealed mode. According to the method for conducting goaf partial filling according to the ground surface subsidence characteristics, deformation destruction and ground surface subsidence of the roof can be effectively controlled, the recovery rate of coal mining under buildings, railways and water bodies is increased, and the environment is protected; filling materials are saved, the filling cost is reduced, and a large amount of underground space formed through filling is reused.

The invention provides an interval skip-mining type filling coal mining method and belongs to the technical field of coal mine filling coal mining methods. The interval skip-mining type filling coal mining method comprises the steps that a first open-off cut is dug at the tail end of a butt entry, a second open-off cut is dug a certain distance away from the first open-off cut, and mining is conducted at the position of the second open-off cut with the wall type system coal mining method after the second open-off cut is well dug; a third open-off cut is dug a certain distance away from the second open-off cut, a gob formed after mining is conducted at the position of the second open-off cut is filled while the third open-off cut is dug, and the rest operation is conducted by analogy till mining is conducted on a mining stopping line. By the adoption of the interval skip-mining type filling coal mining method, mining can be conducted under the condition that the two ends are supported, sequential mining and sequential filling are achieved, the integrity of a base plate of a roof is guaranteed, movement of overlying rock is reduced, and the purpose of surface subsidence control is achieved; after mining with filling is completed, coal pillars left after mining do not need to be filled, filling materials are reduced, and filling cost is reduced.