40results about How to "Avoid land occupation" patented technology

The invention discloses a goaf waste rock filling coal mining method of a flexible shield support in a half-edge coal seam, comprising the following steps: firstly arranging an alley way before coal mining, wherein the inclined alley way is arranged along a pitching surface according to an angle of 23-25 degrees, mining along the inclined direction from top to bottom and along the trending from east to west; secondly using a flexible shield support for coal mining with coal mining method, using the flexible shield support on a mining surface, tightening among the flexible shield supports by using back boards, using a steel rope to connect into an integral flexible shield support, and separating the goaf waste rock and coal mining space; and finally carrying out goaf waste rock filling. Through the method, safe production of half-edge coal seam can be realized, and simultaneously the handling problem of waste rock produced in underground coal mine can be solved.

The invention relates to the radar anti-interference technical field, in particular to a method for inhibiting ionospheric clutter in portable high frequency groundwave radar. In the invention, a plurality of sets of auxiliary crossed loops are arranged in the vertical direction of original crossed loop antennas of the portable high frequency groundwave radar, adaptive cancellation is carried out on the received signals of auxiliary crossed loop antennas, a main crossed loop and monopole antennas; the received signals of the main crossed loop and the monopole antenna are used as a basic input signal, the difference of the received signals between each auxiliary crossed loop antenna and the main crossed loop antenna are used as a reference signal to input three mutually independent self-adapting filters; an error signal is output from the self-adapting filters to be echoed signals of the main crossed loop and the monopole for inhibiting ionospheric clutter. The invention has the following advantages: an ideal ionospheric clutter reference signal can be obtained and the working efficiency and detection performance of radars can be greatly increased.

The invention discloses a rural urbanization residential domestic sewage and biomass garbage treatment system and method. The system comprises a plurality of garbage crushers and a solid-liquid separator, wherein the plurality of garbage crushers are all connected with the solid-liquid separator through pipelines; a solid outlet of the solid-liquid separator is connected with an anaerobic reactor through a pipeline; a liquid outlet of the solid-liquid separator is connected with an aerobic reactor through a pipeline; the downstream side of the aerobic reactor is connected with a sludge-water separator through a pipeline; a sewage outlet of the sludge-water separator is sequentially connected with a sterilizer and a recycled water storage pool through pipelines and is also connected with the anaerobic reactor through a pipeline. By using the comprehensive treatment system and method disclosed by the invention, the biomass garbage and the sewage can be recycled after being treated, thus the no-waste treatment is realized; in addition, space occupation and environment pollution caused in biomass garbage stacking, transporting and sorting processes are avoided, thus residents are urged to classify garbage from the source.

The invention discloses a process of directly forming and utilizing coal slime of a coal cleaning plant. The process comprises the following steps: directly transporting the coal slime from a filter-pressing workshop of the coal cleaning plant to a dosing machine; adding a certain amount of raw coal and an adhesive in percentage by mass; adopting a double-roller forming machine or a screw extruder to form after stirring and uniformly mixing. According to the process disclosed by the invention, the filter-pressing coal slime is not needed to be dried, and can be directly transported to a forming site, so that the coal slime is prevented from occupying land and being polluted. The forming process is simple, a briquette coal product is good in mechanical strength, so that the calorific value of the coal slime briquette coal can be adjusted by matching with the raw coal, and therefore, the use requirements of different users are satisfied. The process disclosed by the invention can be used for effectively solving the problems that the coal slime of the coal cleaning plant is in excess of demand, occupies land, and is polluted.

The invention relates to an overlying strata isolation grouting filling method for underground emission reduction of coal gangue, and belongs to the field of emission reduction of coal gangue in coal mining. The overlying strata isolation grouting filling method comprises the steps that according to information of a coal face, a grouting filling key layer is determined, and a plurality of branch holes are downwards constructed in a main hole of directional drilling from the directional drilling of an underground roadway to the interior of the grouting filling key layer; and a grouting and filling system is built underground, tunneling gangue and selected gangue of a mine are crushed and ground into filling slurry, cracks below a key layer are filled with the filling slurry through directional drilling, the key layer is effectively supported, and rock stratum movement and surface subsidence are controlled. According to the overlying strata isolation grouting filling method for underground emission reduction of the coal gangue, the coal gangue generated by the mine is directly prepared into the filling slurry underground and then is filled into the overlying strata mining-induced fractures, so that harmless treatment is realized.

The invention discloses a method for increasing mine tailing storage reserve based on the designed storage capacity, which belongs to the field of increasing the storage capacity of a mine tailing storehouse. The method comprises the following steps: firstly, laying a layer of working face on original mine tailing slurry in a mine tailing storehouse, arranging a vertical drainage channel in the working face, and setting a horizontal drainage channel on the working face so as to discharge water in the original mine tailing slurry discharges through the vertical drainage channel and the horizontal drainage channel due to the dead weight of solidified tailing soil or tedded tailing soil subsequently stacked on the mine tailing slurry to turn the slurry into a self-supporting soil body with sufficient strength by drainage solidification; and secondly solidifying or tedding tailing slurry subsequently injected to turn the slurry into self-supporting tailing soil with sufficient strength and then stacking the tailing soil on the working face in layers till the final stacking height is achieved.

The invention provides a flexible direct current transmission system for connecting alternating current networks with different voltage classes, which belongs to the technical field of direct current transmission. When the rated line voltage value of a first alternating current system is more than the rated line voltage value of a second alternating current system, a first modularization multi-level current converter, a direct current transmission line and a second modularization multi-level current converter are sequentially connected between the first alternating current system and the second alternating current system in series. The two modularization multi-level current converters are subjected to the same direct current voltage, sub modules with the same rated voltage are also adopted, but the modularization multi-level current converter for being connected with the alternating current system with the lower voltage class can be directly connected with the alternating current system without a transformer, and moreover, a relatively smaller sub module cascade number can be adopted. After the transmission system provided by the invention is adopted, the cost of the modularization multi-level current converters is lowered through reducing the number of the sub modules; and additionally, the occupied area and cost problems which are brought by the alternating current transformer can also be solved.

The invention discloses a sheet material integrating filtering dust removal and catalytic denitration, and a manufacturing method thereof, wherein the sheet material comprises a base sheet capable offiltering flue gas, and a catalyst for denitration is attached to the base sheet. The manufacturing method comprises: 1, mixing polyphenylene sulfide (PPS) fiber and polytetrafluoroethylene (PTFE) fiber to prepare a base sheet; 2, preparing a viscous filtering material from part of the base sheet; 3, preparing nano-scale catalyst powder from the viscous filtering material, Mn, Ce, Zr, Ti, Fe, Cu and other elements; 4, preparing a manganese-based oxide emulsion from the prepared powder; and 5, immersing the base sheet into the manganese-based oxide emulsion to prepare the sheet material. According to the present invention, the sheet material is placed into the cloth bag dust removing device, such that the flue ash in the industrial flue gas can be filtered while the industrial flue gas is subjected to catalytic denitration treatment, the occupation problem is avoided, the investment is low, and the promotion application of the cloth bag dust removal is easily achieved.

The invention relates to a method for analyzing galloping characteristics of a 10kV overhead insulated line under different wind load and icing conditions. The method comprises the following steps: determining different load and icing conditions of a line according to possible meteorological conditions during operation of the 10kV overhead insulated line; building an insulated line 3D model according to a proportion of 1:1; and carrying out reasonable analysis of galloping characteristics of the 10kV overhead insulated line under different wind load and icing conditions. According to the invention, static and dynamic cloud pictures of displacement of the 10kV overhead insulation line under different wind loads and different icing conditions are obtained, static and dynamic change rules of the displacement are obtained, a theoretical basis is laid for analysis of a galloping mechanism of the 10kV overhead insulation line, and the galloping characteristics and mechanism of the 10kV overhead insulation line are explored in principle. Therefore, precaution and early warning of line galloping are facilitated, and safe operation of power transmission lines is ensured.

The invention discloses a flue gas mercury oxidation catalyst and application thereof. The flue gas mercury oxidation catalyst is metal smelting water quenched slag based on copper smelting or nickel smelting. The flue gas mercury oxidation catalyst has a very strong capability of catalytically oxidating elemental mercury in coal-fired flue gas, has a very high elemental mercury oxidating rate even under the condition that the concentration of hydrogen chloride in the flue gas is relatively low, can be recycled and reused by virtue of own magnetism, and does not affect the subsequent utilization of fly ash after entering the fly ash. The flue gas mercury oxidation catalyst is in contact with the flue gas through particle spraying, a fluidized bed or a fixed bed or other ways, and can achieve high-efficiency oxidation of the elemental mercury in the flue gas. The flue gas mercury oxidation catalyst and the application thereof have the advantages of simplicity, feasibility, less investment, no secondary pollution and the like, and have a wide market application prospect.

The invention discloses water body in-situ repairing equipment. The water body in-situ repairing equipment comprises a paving and planting system, a substrate improving system, a pipeline system, a water distribution system, a solar power supply system and a control system; a water taking pump is arranged at the middle position of a riverway; the bottom improving system is arranged above the watertaking pump; the pipeline system is paved above the substrate improving system; revetments are symmetrically arranged on the left side and the right side of the substrate improving system correspondingly; and the paving and planting system is paved on the surface of each revetment. The invention also discloses a repairing method of the water body in-situ repairing equipment. The riverway is completely utilized to dredge waste, such as bottom mud and urban garden waste, which is greatly generated by the city and is difficult to consume, and the aim of treating the waste by the waste is fulfilled; and by adoption of the water body in-situ repairing equipment and the repairing method thereof, the landscape effect of the riverway can be greatly improved, the rigid impression on people by thehard revetment is changed, and the equipment is particularly suitable for the riverway which does not have transformation space in an urban built-up area.

The invention relates to the field of transmission line poles, in particular to a 110 kV drill-span dual-purpose tension tower, which comprises a tower leg and a tower body arranged on the tower leg.The 110 kV drill-span dual-purpose tension tower is characterized in that an upper layer road cross arm and a lower layer road cross arm are arranged on the tower body from top to bottom respectively, the upper layer road cross arm is composed of an upper layer ground wire cross arm, an upper layer upper-phase wire cross arm, and an upper layer lower-phase wire cross arm which are arranged from top to bottom, and the lower layer road crossarm is composed of a lower layer ground wire crossarm, a lower layer upper-phase wire cross arm, and a lower layer lower-phase wire crossarm which are arranged from top to bottom. The unique feature of the 110 kV drill-span dual-purpose tension tower is that when encountering a line which needs to be drilled or crossed, it is not necessary to newly build a pole tower, the upper layer road cross arm is used for achievingspanningand the lower layer road cross arm is used for achieving drilling by utilizing the vertical height of the pole towerunder the premise of ensuring a safe electrical clearance, occupation of land by the newly builtpole tower can be avoided, the110 kV drill-span dual-purpose tension tower can adapt to various working conditions, and the suitable application range is wide.

The invention discloses a solar energy and wind power impulse turbine power generation all-in-one machine which comprises a supporting and guiding system, a solar water heating system and a wind power generation system. The supporting and guiding system is used for supporting the all-in-one machine and enabling an inlet of the current collector to face the incoming flow direction of wind all the time; the solar water heating system is used for enabling water flow to absorb solar heat and heating incoming flow air entering from the current collector; the wind power generation system boosts, heats and expands incoming flow air entering the heating current collector, then pushes the movable blades to rotate and converts the incoming flow air into electric energy of the power generator. Wind energy and solar energy of the top layer of the high-rise building in the city are utilized, the device can be arranged on the top layer of the high-rise building in the city, and extra land occupation is not needed.

The invention discloses a consultancy table for business information consultancy. The consultancy table comprises a main body, a glass insertion groove, a top plate and a work table, wherein fixing discs are uniformly welded on the bottom end of the main body. Through the arrangement of a base plate, a seat plate, clamp posts, clamp grooves, a bottom plate and slide blocks, the self structure of the consultancy table is optimized; on one hand, through the arrangement of the base plate and the seat plate, a seat is provided for a worker for office working; the additional arrangement of a chairwith the matched size is not needed; the humanization degree is higher; through the effects of the slide blocks and slide grooves formed in the bottom plate, when the seat plate is unused, the base plate slides to be pushed to a position under the work table arranged inside the main body, so that the storage effect is achieved, and the space occupation is avoided; on the other hand, through the cooperative effect of the clamp posts and the clamp grooves, a user can conveniently dismount and maintain the base plate; and in addition, a sponge comfortable layer covers the outer side wall of the seat plate, and the comfort degree of the device in the use process is improved, so that the functionality of the device is enhanced.

The invention discloses a ready-mixed mortar thin plastering construction method, which comprises the following key steps of: 1, treating a base layer; 2, paying off is controlled; 3, mortar pre-mixing: dry-mixed mortar is adopted, water is added in proportion on site, and the mixture is stirred by a machine for standby application; fourthly, joint treatment is conducted, specifically, when the mortar is stirred through the machine in the last step, the operation of hanging reinforcing nets or net cloth on the joint portions of different wall materials is conducted; 5, automatic spraying is carried out; uniformly spraying the stirred mortar on the wall surface by using automatic spraying equipment, and trowelling and compacting; in the implementation process of all the steps, a network camera is installed on a safety helmet of a worker, and the camera transmits a site construction picture to a project supervision server in real time. The device has the beneficial effects that the occupied area is small, flying dust is little, the construction environment is better, the construction quality is guaranteed, slurry cannot fall off after construction, and the cost is lower.

The invention relates to a preparation device for modified physical-property-reconstructed steel slag micro powder and an application method. The preparation device comprises a filler chamber, a centrifugal external field carbonization furnace, a waste heat recovery system, a phosphorus powder recovery system and a grinding-magnetic separation multi-force-field coupling regulation and control device; the centrifugal external field carbonization furnace comprises a feed hopper, a discharge port and a baffle plate, wherein the feed hopper is connected to the filler chamber, and the discharge port is connected to the waste heat recovery system; and the waste heat recovery system is connected to the phosphorus powder recovery system and the grinding-magnetic separation multi-force-field coupling regulation and control device. According to the preparation device, a reaction interface is enlarged by utilizing a centrifugal external field, steel slag phase reconstruction and element migrationkinetics are accelerated, multi-component efficient separation is realized by adopting multi-force-field coupling regulation and control, the modified physical-property-reconstructed steel slag micropowder is used for being blown into a blast furnace, so that the modified physical-property-reconstructed steel slag micro powder serves as secondary energy to be utilized, waste is turned into wealth, in addition, conditions are created for eradicating land occupation of waste slag and curbing environmental pollution, and the preparation device has important significance in recycling the waste slag and saving energy.

The invention discloses a fiberboard and a preparing method of the fiberboard. For the current situation that the seaweed resource in China is rich while the wood resource is in shortage, the high-density fiberboard is prepared with production waste of the seaweed industry and agriculture as raw materials, the seaweed waste is sufficiently utilized, land resource occupation caused by traditional burying treatment is avoided, meanwhile, the wood raw materials are saved, and the forest resource is protected. Specific limitation is made for the seaweed waste drying degree and particle granularity, seaweed slag particles and a bonding agent are bonded under the condition, and the load bearing capability can be effectively improved. Limitation is made for the proportion relation between a urea-formaldehyde resin adhesive and gelatin and the proportion relation between the total mass of the urea-formaldehyde resin adhesive and the gelatin and the mass of seaweed slag, and the fiberboard obtained under the proportion relation can reach the national high-density fiberboard performance standard and has ultralow formaldehyde emission.

The invention relates to a cyanide-containing wastewater purification and cyanide recovering device and a recovering method and belongs to the technical field of environmental protection. A cyanide-containing wastewater storage tank is connected with a heater connected with an acidification reactor; a sulfuric acid storage tank is connected with the acidification reactor; an acidizing fluid circulating pump is connected with the bottom and the upper part of the acidification reactor, the top of the acidification reactor is connected with a jet device, a centrifugal pump is connected with the bottom of an absorption tower and connected with the jet device, a pipeline connected with the jet device is inserted into the bottom of the absorption tower, and an absorption liquid circulating pumpis connected with the bottom and the upper part of the absorption tower; the acidification reactor and an efficient thickening device are connected through an acidizing fluid discharging pump; the bottom of the efficient thickening device is connected with a filtering device through a slurry pump; the upper part of the efficient thickening device and the filtering device are connected with a neutralization reactor. The device and the method have the advantages that the treatment effect is good, the treatment efficiency is high, system operation is stable, industrial application is convenient to realize, and treated wastewater can be returned to a production technological process to be used as reclaimed water.