39results about How to "Avoid mining" patented technology

A control system for continuous mining machine to control the mining horizons of roof and floor horizons relative to the rock boundaries of an underground coal seam or ore vein. The mining machine is provided with a cutting drum mounted on a pivoted arm to allow for vertical displacement of the cutter to control the mining height. A plurality of sensors is carried on the rotatable arm to locate the roof and floor boundaries. Attitude sensors are mounted on the machine for providing signals indicative of the inclinations of the body of the machine, and, a microprocessor receives the signals from the boundary sensors and the attitude sensors for calculating the required roof cut and floor cut. A display device receives the signals from the microprocessor and displays the calculated results to the machine operator.

A method for making hydrophilic homopolymers and copolymers of poly 2-hydroxyethyl methacrylate. Also disclosed are coatings, films, hydrogels, cosmetic compositions, dermatological compositions, pressure sensitive adhesives containing the hydrophilic homopolymers or copolymers of poly 2-hydroxyethylmethacrylate. Further disclosed are methods of coating substrates with the hydrophilic homopolymers and copolymers of poly 2-hydroxyethyl methacrylate and hydrophilic pressure sensitive adhesives.

The invention discloses a nutrient solution matrix-free seedling raising and cultivating system and a seedling raising method. The system comprises a nutrient solution seedling raising tank, a seedling grid plate, seeding paper and covering paper, wherein the nutrient solution seedling raising tank is filled with water or nutrient solution; the seedling raising grid plate is arranged on the nutrient solution seedling raising tank, and water through holes are formed on the side faces of the grid plate holes of the seedling raising grid plate; the seeding paper is laid on the seedling raising grid plate; and after seeding, the covering paper is covered on the seeding paper bearing seeds. The method comprises: sowing seeds on the seeding paper, covering the covering paper with high water absorbing performance and breathability and covering the perlite or vermiculite on the covering paper; and after the seeds germinate, the roots of the seedlings penetrate the seeding paper to grow downward to absorb water and nutrients from the nutrient solution below. When the system is used, a matrix which is adopted by the conventional industrial seeding raising technique is not used, the overall accurate control over the temperature, water, nutrient and oxygen required by plants for growth in the whole seedling raising process is realized, the industrialization of the seedling raising processis realized, and the uniformity, strong seedling rate and robust degree of the seedlings are improved.

The invention relates to an assembly type anti-seismic anti-freeze-thaw deformation self-adaptive corrugated plate rigid-flexible retaining wall. The retaining wall comprises a bottom plate and a retaining plate above the bottom plate, and the cross section of the retaining wall is in an inverted T shape; the bottom plate transversely comprises a plurality of rows of unit plates which are sequentially a front end bottom plate, a middle connecting bottom plate and a foundation bottom plate from inside to outside and are assembled and connected through inserting grooves and inserting strips in the end faces; the retaining plate comprises a plurality of stand columns and an arched steel corrugated retaining plate among the stand columns, strip-shaped grooves are formed in the two longitudinalside faces of each stand column, and the ends of the arched steel corrugated retaining plate are inserted into the strip-shaped grooves of the stand columns; and the longitudinal inserting grooves are formed in the surface of the foundation bottom plate, and the bottoms of the stand columns and the arched steel corrugated retaining plate are inserted into the inserting grooves of the foundation bottom plate. According to the retaining well, a prefabricated assembly type construction method is adopted, foundation deformation caused by huge horizontal seismic force and frost heaving force and vertical frost heaving force can be adapted, and the cyclic deformation adaptive capacity is achieved.

The invention discloses a travertine-like arabesquitic vat. The forming material of the travertine-like arabesquitic vat mainly comprises a solid material, a blended solution and staple, wherein the solid material comprises the following components in percentage by weight: 30-45% of rapid-hardening sulphoaluminate cement, 45-65% of fine river sand, 1-3% of titanium dioxide, 1-3% of yellow powder and 0.01-0.15% of red powder; the blended solution comprises the following components in percentage by weight: 99-99.9% of water and 0.01-0.1% of polyacrylamide; and the staple is glass fiber of which the length is 5-10cm. The invention also discloses a production technology for the travertine-like arabesquitic vat, which comprises the following steps of: burdening, mixing, cleaning a mold, installing a material mold, installing the staple, demolding, nursing, trimming, repairing, brushing to be smooth, applying a surface coating and the like. The travertine-like arabesquitic vat disclosed by the invention has the advantages of clear and natural texture, good product intensity, light weight, hard surface layer, abrasion resistance, small possibility of delaminating and falling powder, low cost and good decoration effect, is convenient to produce on a large scale and is easy for stable control of product chromatic aberration, natural travertine in the natural world can be prevented from being mined on a large scale, and mine waste can be utilized to protect the ecological environment.

The invention discloses a complex travertine. The complex travertine is made of the following materials in weight percentage: 15 to 45 percent of gelled material, 55 to 85 percent of filler, 1.5 and 2.5 percent of additive and the balance being proper quantity of toners. The invention also discloses a method for preparing the complex travertine, and the method comprises the steps of mixture making, blending, material distribution, heating, demolding, cutting and fine grinding treatment, etc. All cutting faces of the complex travertine of the invention have clear, regular and uniform textures, and the products with different textures, patterns and holes can be made according to the requirements of a customer, and the product is beautiful and elegant in appearance; at the same time, the natural rocks in nature are avoided form being exploited, and the mining waste materials can be recovered, thereby protecting the ecological environment.

A window roller blind assembly for motor vehicles which includes a roller blind that can be drawn from a wind-up shaft by a motor driven driving element engageable with a pull rod of the roller blind. To prevent pinching as a result of the pull rod engaging an obstacle during operation of the roller blind assembly, an electrical system is provided for monitoring operation of the roller blind motor. The system is operable for switching off current to the motor when a preset value is exceed, which is interpreted as a signal that pinching or squeezing of an obstacle is occurring.

The invention discloses a method for purification of dichlorosilane from dry method recovered materials, and comprises the following steps of: a) obtaining a dry-method recovered material by recovering from reduction tail gas of the polysilicon production process by a dry method, feeding the recovered material into a first dry method rectifying tower for rectification, recovering a first low-boiling-point substance from the tower top of the first dry method rectifying tower, and recovering intermediate chlorosilane from the tower bottom of the first dry method rectifying tower; b) feeding the first low-boiling-point substance into a separation column for separation, recovering boron impurity from the top of the separation column, and recovering dichlorosilane from the bottom of the separation column; c) feeding the intermediate chlorosilane into a second dry method rectifying tower for rectification, recovering a second low-boiling-point substance from the tower top of the second dry method rectifying tower, and recovering silicon tetrachloride from the tower bottom of the second dry method rectifying tower. According to the method of the invention, the second low-boiling-point substance is a mixture of dichlorosilane and trichlorosilane which can be directly fed into a reducing furnace for reduction reaction, thereby saving the process of mixing the dichlorosilane and the trichlorosilane.

A method for rapidly acquiring multi-field response of mining-induced coal rock is provided. Based on 3D printing, the method achieves the control of material deformation and turns from 3D to 4D, thus saving manpower and material resources; further, repeated experiments may still be carried out under approximately the same conditions after each printing, so that the similarity of similarity simulations is greatly improved and a stable and reliable scientific law is conveniently obtained; besides, a BP neural network model may be built based on the data collected from similarity simulations to rapidly acquire an accurate and real coal seam mining response.

The invention discloses a flower vat imitating travertine. The molding material is mainly composed of solid materials, blending solution and short fibers. The weight percentage of the solid materials: 30-45% rapid hardening sulfoaluminate cement, 65% fine river sand, 1-3% titanium dioxide, 1-3% yellow powder, 0.01-0.15% red powder; the weight percentage of the blended solution: 99-99.9% water, 0.01-0.1% polyacrylamide; The staple fibers described above: glass fibers with a length of 5 to 10 cm; the present invention also discloses a process for producing the above-mentioned imitation travertine flower vats, including batching, mixing, mold cleaning, feeding molds, upper staple fibers, and demoulding. , Maintenance, trimming, repairing, brushing, surface coating and other steps. The imitation travertine flower vat of the present invention has clear and natural texture, good product strength, light weight, hard surface, wear-resistant, not easy to delaminate and powder, convenient for mass production, low cost, easy to control product color difference stably, The decorative effect is good, and at the same time, it can avoid a large amount of mining of natural travertine in nature, and can digest mine waste to protect the ecological environment.

The invention provides a Chinese yam planting device facilitating harvesting. The Chinese yam planting device comprises a box body, the box body is divided into a plurality of planting cavities and growth cavities, the planting cavities are located above the growth cavities and communicate with the growth cavities through circular holes in a box body structure, stem block fixing mechanisms are arranged at joints of the planting cavities and the circular holes, and a climbing frame is fixed to the top of the box body. Guide ropes are arranged on the two sides of the climbing frame and connectedto the outer sides of the planting cavities, side frames are arranged in the growth cavities, the side frames are hinged to the side face of the box body through hinge assemblies at the bottom, and collecting barrels are arranged in the side frames and located under the stem block fixing mechanisms. Through the collecting barrels and cutting mechanisms, integrity of collected Chinese yams is guaranteed, damage is reduced, excavation is not needed, time and labor are saved, meanwhile, the remaining Chinese yams can be directly used for planting of the next season after being disinfected, repeated excavation of ditches for planting the Chinese yams is not needed, a large amount of labor is saved, the labor intensity is reduced, and good development prospects are achieved.

The invention discloses a green low-carbon environment-friendly road structure adopting regenerative material. The structure comprises a subgrade and a pavement which are sequentially arranged from bottom to top; the subgrade comprises an embankment and a road bed which are sequentially arranged from bottom to top, wherein the embankment is prepared from urban building waste regenerative mixture,and the road bed is prepared from urban building waste regenerative grading mixture; and the pavement comprises a cushion layer, a bottom base layer, a base layer, a lower layer, a middle layer and anupper layer which are sequentially arranged from bottom to top, and the cushion layer is prepared from building waste regenerative grading aggregate. According to the structure, the requirements of the existing traffic development can be guaranteed, the environmental problems left due to the urban development are resolved, and the problem of destructive mining on natural resources due to the foundation engineering construction is solved.

The invention discloses a formula for a polyolefin foaming building template and a technology and relates to the technical field of high polymer materials. The technology comprises the steps of mixing, granulation, drying, stirring, extrusion, cooling, shaping and cutting. A side feed manner is adopted, so that the product performance of the polyolefin foaming building template is improved; the problems of poor toughness, low strength, high possibility of contraction deformation and nonuniform product foaming density of a polyolefin foaming material are solved; a prepared product can be widelyapplied the field of buildings and the like; a high infrared radiation foaming oven is adopted for foaming of an extruded plate; the product quality and production efficiency are improved; and the formula and the technology have good market prospects.

The invention provides a carbon dioxide trapping agent and a preparation method thereof, and relates to the technical field of energy conservation and emission reduction. The carbon dioxide trapping agent comprises the following raw materials: calcium orthosilicate and an alkali metal carbonate, wherein the molar quantity of the alkali metal carbonate accounts for 60% or more of the total molar quantity of the calcium orthosilicate and the alkali metal carbonate. The method has the advantages that the carbon dioxide trapping agent is wide in raw material source, low in preparation cost, low intrapping temperature and capable of achieving rapid regeneration, and no pollutant is generated in the whole process.

The invention belongs to the field of foundation pit dewatering excavation construction, and particularly relates to a foundation pit dewatering construction method in a stratum containing a laminar flow supply source. According to the method, a foundation pit is excavated in a layered mode, and when an aquifer is excavated, the aquifer is divided into two or more excavation sections for dewatering and excavation; according to the stratum water replenishing speed of each excavation section, the following modes are adopted for dewatering the corresponding excavation section: (1) firstly, tube well pre-dewatering is adopted, and then water collection pit open drainage continues to drain water for dewatering; in the second mode, tube well pre-precipitation is adopted firstly, before tube well pre-precipitation is finished, water collecting pit open drainage is adopted for collaborative precipitation, and after collaborative setting time is finished, water collecting pit open drainage is adopted for precipitation; (3) tube well pre-precipitation is adopted firstly, before tube well pre-precipitation is finished, water collection pit open drainage collaborative precipitation is adopted, and tube well precipitation at least lasts until excavation of the excavation section is completed; and the stratum water replenishing speeds of the excavation sections corresponding to the mode 1, the mode 2 and the mode 3 are sequentially increased, and low-cost and environment-friendly rainfall in the construction period is achieved.

An embodiment of the invention discloses an environment-friendly food material edge-wrapped honeycomb and a production and packing method. The honeycomb comprises a bottom supporting plate and throughholes formed in four corners of a bottom supporting plate, a supporting vertical rod is fixedly mounted in each through hole, a vertical through hole is formed in each supporting vertical rod, a foodmaterial edge wrapping plate is arranged between each two adjacent supporting vertical rods, and a plurality of layers of protective films wrap the outer side of each food material edge wrapping plate. The production and packing method specifically comprises the following steps: placing the food material edge-wrapped honeycomb into a beehive, and making beehives and producing honey by bees in thefood material edge-wrapped honeycomb; forming a beeswax honeycomb by waxing the food material edge wrapping plates, and taking out the food material edge-wrapped honeycomb after honey brewing is finished; taking out the food material edge-wrapped honeycomb to drive out the bees, and directly placing the food material edge-wrapped honeycomb into a packaging box. An edible material is adopted as the design of wrapping edges around the honey, so that the honey can be directly fed into the mouth to be eaten, and meanwhile, the circumstance that the honey is damaged and leaked during transportation is prevented.

An endoscopic or laparoscopic introducer, a medical device to assist the surgeon with the insertion, maneuvering, and removal of an endoscope, laparoscope, biopsy device, or medical device from a patient's body during endoscopic or laparoscopic surgery. The advancement relates to an introducer and specifically to an autoclavable modular introducer. Introducer is modular and is capable of attachment to numerous types of fittings and thereby capable of coupling and decoupling to numerous types of endoscopes, cannulas, insufflation flow sources, biopsy devices, and other medical devices. Introducer is autoclavable in that it is capable of sterilization by autoclave without incurring deterioration or degradation. This invention incorporates a biopsy port in the modular introducer system for the surgeon to extract cells and tissues for biopsy procedure.

The invention discloses a GIS spatio-temporal data model for underground illegal mining identification. The GIS spatio-temporal data model comprises a geometric element model layer, a spatio-temporal process model layer, a spatio-temporal inversion model layer and an illegal identification model layer.The four model hierarchies are mutually associated and interacted, expression of spatio-temporal processes of mine geological objects such as ore bodies, roadways, rock masses, mining right ranges, underground mining faces and goaf under the multi-time granularity and multi-space scale, fusion of multi-level and multi-source earth observation data and response of multi-level illegal mining events can be comprehensively supported. The GIS spatio-temporal data model for underground illegal mining identification is established by combining actual requirements of real-time monitoring of underground illegal mining and simulating and describing a mining subsidence spatio-temporal change process on the basis of analyzing and expressing mining subsidence spatio-temporal change, and a platform guarantee is provided for subsequent identification and monitoring of different types of illegal mining events.

The invention discloses a compression-resistant and carbonation-resistant recycled concrete and a preparation method thereof, belonging to the technical field of concrete. Concrete raw materials include 250-290 parts of cement, 55-70 parts of silica fume, 30-45 parts of fly ash, 1050-1120 parts of modified recycled coarse aggregate, 700-730 parts of sand, and 10-15 parts of redispersible latex powder 3-5 parts of water reducing agent, 140-160 parts of water. Preparation of modified recycled coarse aggregate: 100 parts of water glass with a mass concentration of 5%, 20-30 parts of diatomaceous earth, 10-20 parts of zeolite powder, 8-15 parts of colloidal graphite powder, 1-15 parts of silane coupling agent Mix 3 parts evenly to obtain aggregate modification solution, soak the recycled coarse aggregate raw material in it, drain, and roast at 180-200°C for 1-2h. Preparation of concrete: Prepare modified recycled coarse aggregate; mix cement, sand, redispersible latex powder, and water evenly, add modified recycled coarse aggregate and mix evenly, add water reducing agent, silica fume and fly ash and mix evenly . All the concrete of the invention adopts the modified recycled coarse aggregate as the coarse aggregate, and the final prepared concrete has the characteristics of compression resistance and carbonation resistance.

The invention relates to a production method of cement clinker, in particular to a low-cost production method of cement clinker. The ratio of raw materials on a dry basis used in the present invention is 79.89 to 82.47 parts of limestone, 3.11 to 5.4 parts of wet ash, 2.13 to 7.47 parts of Yellow River silt, 2.86 to 4.42 parts of converter slag, 2.81 to 6.17 parts of iron tailings, and 1.24 to 2.31 parts of sandstone. share. By making full use of waste such as Yellow River silt, converter slag, and wet ash discharged from power plants, the cost of raw materials has been reduced from an average of 19.75 yuan / ton of clinker to an average of 17.41-18.13 yuan / ton of clinker; a decrease of 1.62-2.34 yuan / ton of clinker; The wear rate of the machine can save 285,000 yuan per year for the raw material grinding roller skin and disk welding repair wire; the working efficiency of the raw material grinding table can be increased by 20 tons / hour; the annual estimated cost savings is nearly 10 million yuan.

The composite stone material is produced with the material including cementing material 35-45 wt%, filler 55-65 wt%, additive 1-5 wt% and proper amount of pigment. The production process of the composite stone material includes the steps of compounding material, mixing, distributing material, heating, demolding, curing, cutting, air drying, repairing, permeating glue, polishing, etc. The composite stone material of the present invention has clear and regular grains capable of being customized, beautiful appearance and environment friendship.

The invention relates to the field of dredging, in particular to the field of mud dumping and diking in the dredging field. A mud dumping and diking boat comprises a mud dumping boat, a mud transporting dolly, a dolly running truss and a supporting truss, wherein the dolly running truss is fixedly connected with the bow of the mud dumping boat; the supporting truss is arranged at the stern of themud dumping boat; a connecting truss is connected between the dolly running truss and the supporting truss; the included angle between the dolly running truss and the horizontal plane is 3-8 DEG; a leading sheave is respectively arranged at two ends of the dolly running truss; a first steel wire rope is connected between the leading sheaves and the mud transporting dolly; a winch is arranged on the mud dumping boat; and a second steel wire rope is connected between the winch and the mud transporting dolly. The mud dumping and diking boat provided by the invention has the advantages of little used equipment, simpleness and safety in diking and low cost.

The invention provides a carrier for loading precipitates, a preparation method of the carrier and a method for loading flocculent precipitates. The carrier comprises an inner core and an outer core, the adsorption layer coats the periphery of the inner core, and the adsorption layer is made of a porous adsorption material; the inner core comprises a plurality of prefabricated particles which are particulate matters composed of waste gas recovery powder; and the auxiliary agent is filled in gaps among the plurality of prefabricated particles, the plurality of prefabricated particles are bonded together to form the inner core, and the carrier for loading the precipitates, the preparation method of the carrier and the method for loading the flocculent precipitates have the advantages of economy and high efficiency.

The invention relates to high-strength concrete prepared from low-grade magnesite. The high-strength concrete comprises the following raw materials of: in parts by weight, 1017-1123 parts of magnesitewith particle size of not less than 2 mm and not more than 25 mm, 663-731 parts of sand, 467-515 parts of cement with the label of 42.5, 143-157 parts of water, 3.8-4.2 parts of polycarboxylate superplasticizer and 36.1-39.9 parts of silicon powder, and the prepared high-strength concrete has a strength grade of C60 or above. The prepared high-strength concrete has the strength grade of C60 or above and stable performance, so that magnesium ore resources are fully utilized, excessive mining of stones is avoided, and environmental protection and reduction of production cost are facilitated.

The embodiment of the invention discloses an environment-friendly food material edge-wrapped honeycomb and a production and boxing method. The honeycomb includes a bottom support plate and through holes arranged on the four corners of the bottom support plate. A support is fixedly installed in each through hole. Vertical rods, the inside of the supporting vertical rods are provided with vertical through holes, and there is a food material wrapping board between two adjacent support vertical rods, and several layers of protective films are wrapped on the outside of the food material side boards; the production box The specific method is as follows: put the food-wrapped honeycomb into the beehive, and the bees make a nest in the food-wrapped honeycomb to produce honey; the food-wrapped board is waxed to form a beeswax honeycomb; After taking out the edge honeycomb, drive out the bees, and directly put the edge honeycomb into the packaging box; the edible material is used as the edge wrapping design around the honeycomb, so that the honeycomb can be directly sent to the mouth for consumption, and at the same time prevent the honeycomb from being in the mouth. In case of damage and leakage of honey during transportation.

The invention discloses a nutrient solution matrix-free seedling raising and cultivating system and a seedling raising method. The system comprises a nutrient solution seedling raising tank, a seedling grid plate, seeding paper and covering paper, wherein the nutrient solution seedling raising tank is filled with water or nutrient solution; the seedling raising grid plate is arranged on the nutrient solution seedling raising tank, and water through holes are formed on the side faces of the grid plate holes of the seedling raising grid plate; the seeding paper is laid on the seedling raising grid plate; and after seeding, the covering paper is covered on the seeding paper bearing seeds. The method comprises: sowing seeds on the seeding paper, covering the covering paper with high water absorbing performance and breathability and covering the perlite or vermiculite on the covering paper; and after the seeds germinate, the roots of the seedlings penetrate the seeding paper to grow downward to absorb water and nutrients from the nutrient solution below. When the system is used, a matrix which is adopted by the conventional industrial seeding raising technique is not used, the overall accurate control over the temperature, water, nutrient and oxygen required by plants for growth in the whole seedling raising process is realized, the industrialization of the seedling raising processis realized, and the uniformity, strong seedling rate and robust degree of the seedlings are improved.