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45 results about "Parent rock" patented technology

Parent rock, also referred to as substratum, refers to the original rock from which something else was formed. It is mainly used in the context of soil formation where the parent rock (or parent material) normally has a large influence on the nature of the resulting soil. For example,clay soil is derived from shale while sandy soil comes from the weathering of sandstones. The term is also used in the context of metamorphic rocks where again the parent rock or protolith refers to the original rock before metamorphism takes place. Parent rocks can be sedimentary, igneous or metamorphic.

Method for determining rockfill material filling standards and detecting on-site filling quality based on fractal theory

ActiveCN107543775AControl filling qualityGuaranteed constructionParticle size analysisPermeability/surface area analysisPorosityRockfill material
The invention relates to a method for determining rockfill material filling standards and detecting on-site filling quality based on a fractal theory. The method comprises verifying a particle fractaldistribution model, building a relationship between grading parameters and dry density or porosity, building a relationship between grading parameters and a compressive modulus, determining rockfillmaterial filling grading or a grading envelope line satisfying compressive modulus requirements, acquiring a filling porosity index or an index range, carrying out a penetration test, detecting a permeability coefficient, if the permeability coefficient does not satisfy the permeability requirement, reducing and adjusting a grading range until the permeability coefficient satisfies the permeability requirement, and verifying whether the filling porosity under the condition of design relative density satisfies the filling porosity requirement. The method provides double control standards of porosity and relative density, controls rockfill body filling quality, comprehensively considers the influence produced by the grading of the rockfill material, the characteristics of the parent rock anda compaction degree on the deformability of the rockfill body, provides the reliable basis for the whole stability of the rockfill dam and effective deformation control and ensures the construction and operation safety of the dam.
Owner:HOHAI UNIV

Method for determining filling index of coarse granular material and realizing on-site quality control

The invention discloses a method for determining the filling index of a coarse granular material and realizing on-site quality control. According to the method, corresponding gradation statistical models are established according to the components with different particle sizes of the coarse granular material; correlations between the gradations of different model parameters and dry density or porosity are established through relative density tests; by means of compression tests and triaxial tests, correlations between the gradations of the different model parameters and breaking strength are established, and correlations between the gradations of the different model parameters and modulus of compression are established; and with selecting a -modulus of compression as an objective, a filling porosity index or index range is obtained. According to the method of the invention, the filling quality of the coarse granular material is controlled according to the dual-control standard of porosity and relative density; the influences of the gradations, parent rock features and compaction degree of the coarse granular material on the deformation performance of the coarse granular material are comprehensively considered; a reliable basis is provided for the control of the overall stability and effective deformation of rock-fill dams or gravel rock-fill dams, so that the safety of the construction and operation of the dams can be ensured.
Owner:NANJING YIHAI WATER CONSERVANCY ENG TECH CO LTD

Ground stress testing method based on rock core Kaiser effect

The invention discloses a ground stress testing method based on rock core Kaiser effect. The method comprises the following steps of: drilling a plurality of rock core samples on a mother rock in theaxial direction of the mother rock core and in a plurality of directions perpendicular to the axial direction of the mother rock core; carrying out acoustic emission testing on each rock core sample,determining Kaiser effect points on the rock core samples through acoustic emission counting, acoustic emission counting accumulation and / or acoustic emission counting rate increment of the rock coresamples, and determining the stress of the Kaiser effect points on the rock core samples; based on the stress of the Kaiser effect points on the rock core samples, determining the maximum horizontal principal stress and the minimum horizontal principal stress of the mother rock and the included angle between the maximum horizontal principal stress and a marker line; and determining an azimuth angle of the maximum horizontal principal stress relative to a geographical north pole. The method is accurate and effective, improves the precision of the three-dimensional principal stress and directiontest of the coal measure strata, and provides basic reference data for mining area development and roadway arrangement.
Owner:SHENHUA SHENDONG COAL GRP +1

Vertical rotary tiller for promoting rock to form soil on purple soil thin layer slope

The invention discloses a vertical rotary tiller for promoting rock to form soil on a purple soil thin layer slope. The vertical rotary tiller comprises a rack and a spiral device, wherein a case is arranged at the top end of the rack, and a generator is arranged in the case; an oil tank is arranged at the top end of the case, and a water tank is arranged at one side of the oil tank; the spiral device is arranged at one end of the rack, and the top end of one side of the spiral device is fixedly provided with a push rod; the bottom of the other end of the rack is welded with a rotating shaft,and the two ends of the rotating shaft are respectively connected with the inner ring of a rolling bearing in a penetrating way. The mud and the shale on the purple soil thin layer slope are spirallyground and crushed by the spiral device to promote the weathering of parent rock into soil and reduce the tillage erosion so that the soil formation rate is greater than the erosion rate and the soillayer thickness is increased, the deep tillage is performed but a soil layer is not disturbed, and a U-shaped groove is formed in a soil deep layer after the tillage is performed by a spiral shaft toeffectively gather interflow. The vertical rotary tiller can complete the traditional plowing, raking and beating operation procedures once, and is favorable for water, gas fertilize balance in the soil through live soil water retention.
Owner:HYDRAULIC SCI RES INST OF SICHUAN PROVINCE +1

Preparation method of true triaxial sample for reflecting occurrence characteristics of weak intercalated rock mass

The invention provides a preparation method of a true triaxial sample reflecting occurrence characteristics of a rock mass containing a weak intercalated layer, which comprises the following steps: firstly, obtaining a stress state of a primary rock, then preparing cuboid rock samples with different combination angles in batches, and polishing a rock structural surface of the sample based on scanning data of a field rock structural surface to obtain a true triaxial sample; adjusting the water content of the weak intercalated layer obtained on site or the weak intercalated layer similar material prepared by uniformly mixing the weak intercalated layer according to the proportion to the required water content, maintaining, adjusting the rotating support to the required angle, sequentially adding the materials into a mold, and finally loading the sample to a primary rock stress state and carrying out later-stage standardization treatment. According to the method, by adjusting the splitting and grinding angle of the mother rock, setting the mold with an inclinable angle and setting different thicknesses of the weak intercalated layers, the weak intercalated layer-mother rock composite samples with different occurrence states and thicknesses are prepared, the weak intercalated layers are distributed more uniformly, and the obtained weak intercalated layer-mother rock composite true triaxial sample is easy to form and has good mechanical properties. And the method is more in line with the actual spatial topology distribution state of the weak intercalated layer on site.
Owner:ZHENGZHOU UNIV

Net-rope-and-plug-linked-type landscape anchoring device used for preventing falling type dangerous rock

The invention discloses a net-rope-and-plug-linked-type landscape anchoring device used for preventing falling type dangerous rock. The net-rope-and-plug-linked-type landscape anchoring device is characterized by comprising a plurality of anchoring units distributed on the periphery of the dangerous rock, a protective net for covering the surface of the dangerous rock and landscape objects attached to the protective net; each anchoring unit comprises a plug and a reverse-pulling cylinder, wherein the plug is inserted and clamped into the reverse-pulling cylinder to achieve connection of the plug and the reverse-pulling cylinder; the reverse-pulling cylinders and a parent rock mass are connected in an anchored mode through mortar; each plug comprises a pencil-shaped body, and each body is provided with a plurality of barb grooves and a plurality of barbs at intervals; the barb grooves of the plugs are cuboid grooves, and the length of the barb grooves is coincident with the length of the barbs; the barbs are hinged to the sides of the barb grooves through studs and meanwhile elastically supported by stretchable devices; the reverse-pulling cylinders of the plugs are rectangular columns, a plurality of barb clamping grooves are evenly formed in each reverse-pulling cylinder, four penetrating reinforcing steel bar holes are preserved in each reversing-pulling cylinder, four penetrating reinforcing steel bars are arranged in each reversing-pulling cylinder, and the barb clamping grooves are wedge-shaped grooves. According to the net-rope-and-plug-linked-type landscape anchoring device, the rock mass of the dangerous rock is not damaged, and construction is rapid and convenient; the net-rope-and-plug-linked-type landscape anchoring device has the advantage of achieving landscape repairing.
Owner:ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Shallow layer landslide type valley debris flow early warning method

The invention discloses a shallow landslide type valley debris flow early warning method, which belongs to the technical field of debris flow prevention and control engineering, and is characterized by comprising the following steps of: a, measuring a full watershed area A of debris flow without accumulation areas; b, measuring the percentage S0 of the sensitive slope area in the whole drainage basin area of the debris flow without the accumulation area and the longitudinal gradient J of the gully bed, and determining a debris flow topographic factor T; c, determining the annual average rainfall R0 of the debris flow channel in the monitoring area and the one-hour rainfall variation coefficient Cv of the debris flow channel, measuring the one-hour excitation rainfall It, determining the mother rock type of the soil, calculating the soil moisture content factor K, and determining the debris flow rainfall factor R; d, calculating a debris flow occurrence index P; and e, judging the occurrence of debris flow. The measurement and calculation result of the method is more in line with the debris flow formation mechanism, the debris flow early warning accuracy is improved, and the method has higher disaster prevention applicability.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Method and device for determining lithology of clastic garnet mineral parent rock

The invention provides a method and device for determining lithology of clastic garnet mineral mother rock. The method comprises steps of preliminarily determining the lithology of the clastic garnetmineral mother rock through employing a garnet Mg-Fe+Mn-Ca main element discrimination graph according to a main element analysis result of a to-be-detected clastic garnet mineral; and when the main element analysis result of the to-be-detected chip garnet mineral falls in the Type A, Type B or Type D region of the discrimination graph, further determining the parent rock lithology of the to-be-detected chip garnet mineral by utilizing the trace element analysis result of the to-be-detected chip garnet mineral. According to the method, garnets from a basic rock source and a variable basic rocksource can be more systematically and accurately distinguished, garnets from different types of skarn sources can be distinguished, and garnets from a granite source, a high-grade granite phase-change argillaceous rock source and a medium-low-grade hornstone phase-change argillaceous rock source can be distinguished; and therefore, the method plays an important role in the aspects of material source recovery research, even basin-mountain coupling relationship research and the like.
Owner:PETROCHINA CO LTD

Source-sink system quantitative evaluation method

PendingCN113960288AEffectively analyze the coupling relationshipEarth material testingSeismic signal processingQuantitative modelParent rock
The invention discloses a source-sink system quantitative evaluation method, and belongs to the field of sediment source analysis. The method comprises: constructing a conceptual model based on geological data; determining simulation parameters under the guidance of the conceptual model, and establishing a sedimentary stratum quantitative model through stratum forward modeling based on the hydrodynamic principle; based on the principle of conservation of substances, combining with real geological data to verify that the sedimentary model is reasonable, and extracting sedimentary thicknesses from different material sources in different time steps by using the model after the material source input mode is changed; and calculating and processing the thickness of the sediments from different material sources in the simulation time step length, and analyzing the contribution of the sediments from different material sources. The method solves the problems that an existing method cannot carry out work in areas without wells or with few wells, and sediments from different material sources in the basin cannot be quantitatively distinguished. In consideration of internal and external dynamic geological effects such as reference surface lifting and structural activity, the method has the characteristic of quantitatively evaluating the relative contribution of sediments from different mother rock areas in the basin in different time steps in the source-sink system.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Tail end process for improving quality of machine-made sand

The invention relates to the technical field of machine-made sand, in particular to a tail end process for improving the quality of machine-made sand. The tail end process comprises the following steps of S1, selecting rock blocks; S2, crushing rock blocks; S3, conducting screening; S4, performing dust removal; and S5, obtaining machine-made sand. A sand washer water tank is provided with a watersupply system; and the water supply system comprises a high-water-level liquid level meter, a middle-water-level liquid level meter, a low-water-level liquid level meter, a submerged pump, a sewage pump, a water adding valve and a liquid level controller. A square-hole screen is selected as the screen; the size of each sieve pore is 3.5 to 4.5 mm; the inclination angle of the screen surface is generally about 20 degrees; good screening efficiency and treatment capacity of the materials can be achieved; the water volume in water tank is effectively controlled; the submerged pump is protected; the water is saved; the saturated surface drying effect of the machine-made sand is achieved; the national requirements are met; and the quality of the machine-made sand can be effectively improved, and the performance of machine-made sand concrete is improved through the technical requirements of mine mother rock, the technical requirements of a vibration feeding screen, a material crushing methodand the mechanism of the material crushing method in the machine-made sand production technological process.
Owner:JIANGSU SHANBAO GRP

Protective structure and treatment method for side slope overhang body

PendingCN110565664AWill not be damaged by vibrationAvoid Vibration DamageExcavationsBulkheads/pilesTreatment effectRebar
The invention discloses a protective structure and a treatment method for a side slope overhang body. The protective structure comprises anchor rods arranged on the two sides of the overhang body andpenetrating into a parent rock body, steel strands are connected between the exposed sections, outside the parent rock body, of the two-side anchor rods, the steel strand are tightened and closely fitted along the waist outer wall of the overhang body, ringed steel bars are further arranged between the adjacent steel strands, a concrete supporting pier arranged in a cavity of the parent rock bodyunder the overhang body is further included, a slope inner anchor rod is installed on the inner side of a cavity slope of the parent rock body, a substrate anchor rod is installed at the bottom of thecavity of the parent rock body, and the exposed sections of the slope inner anchor rod and the substrate anchor rod are correspondingly connected with steel bars in the concrete supporting pier. According to the protective structure for the side slop overhang body, the anchor rods are arranged on the two sides of the overhang body, the waist of the overhang body is fixed by the steel strands, theconcrete supporting pier is arranged under the overhang body to support the overhang body, vibration damage to the overhang body cannot be produced, the effects of strengthening the overhang body andpreventing the further deformation of the overhang body are achieved, the construction safety risk is small, and the treatment effect on the overhang body is good.
Owner:POWERCHINA CHENGDU ENG

Rope-Plug Linkage Landscape Anchors for Falling Dangerous Rock Prevention

The invention discloses a net-rope-and-plug-linked-type landscape anchoring device used for preventing falling type dangerous rock. The net-rope-and-plug-linked-type landscape anchoring device is characterized by comprising a plurality of anchoring units distributed on the periphery of the dangerous rock, a protective net for covering the surface of the dangerous rock and landscape objects attached to the protective net; each anchoring unit comprises a plug and a reverse-pulling cylinder, wherein the plug is inserted and clamped into the reverse-pulling cylinder to achieve connection of the plug and the reverse-pulling cylinder; the reverse-pulling cylinders and a parent rock mass are connected in an anchored mode through mortar; each plug comprises a pencil-shaped body, and each body is provided with a plurality of barb grooves and a plurality of barbs at intervals; the barb grooves of the plugs are cuboid grooves, and the length of the barb grooves is coincident with the length of the barbs; the barbs are hinged to the sides of the barb grooves through studs and meanwhile elastically supported by stretchable devices; the reverse-pulling cylinders of the plugs are rectangular columns, a plurality of barb clamping grooves are evenly formed in each reverse-pulling cylinder, four penetrating reinforcing steel bar holes are preserved in each reversing-pulling cylinder, four penetrating reinforcing steel bars are arranged in each reversing-pulling cylinder, and the barb clamping grooves are wedge-shaped grooves. According to the net-rope-and-plug-linked-type landscape anchoring device, the rock mass of the dangerous rock is not damaged, and construction is rapid and convenient; the net-rope-and-plug-linked-type landscape anchoring device has the advantage of achieving landscape repairing.
Owner:ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Construction method for converting dangerous rock treatment blasting material into dam filling-level burdening

The invention discloses a construction method for converting dangerous rock treatment blasting material into dam filling-level burdening. The construction method comprises the following steps that 1),slope cutting construction is carried out through a deep hole bench blasting method, and sloping is carried out on trailing edge mother rock; 2), blast hole drilling operation is performed by using adrilling machine, and the blast hole drilling angle is the same as the designed slope angle; 3), the blast holes are filled with explosives in an interval charging mode, and detonating is carried outby adopting a single-hole single-sound detonation network; and 4), after layered and sectioned excavation, the blasting slag materials are transferred through a dump truck, and the blasting slag materials are pushed to a material taking platform through a bulldozer. By the adoption of the method, the purpose of changing blasting gradation is achieved by optimizing blasting parameters, the proportion of large-diameter stones after blasting is increased, and when the large-diameter stones are blasted and pushed to the material taking platform, stone sources meeting other construction projects are formed by means of collision of the large-diameter stones, and the purpose of directly applying the blasting slag materials to dam construction can be achieved.
Owner:CHINA GEZHOUBA (GRP) FIRST ENG CO LTD

Discriminating method for utilization of tunnel waste slag as building material aggregate

The invention relates to a discriminating method for utilization of tunnel waste slag as building material aggregate. The method comprises the following steps of: acquiring a first tunnel rock samplealong a railway to be constructed; performing a rock sample test on the first tunnel rock sample to obtain geological mapping data and a surrounding rock grade, the geological mapping data including engineering geological characteristics, structural characteristics, a complete state and surrounding rock stability; preliminarily determining an available surrounding rock target range based on the geological mapping data and the surrounding rock grade; sampling the surrounding rock in the target range to obtain a second tunnel rock sample; and based on the mother rock strength, the alkali activity, the stone powder content and the crushing index of the second tunnel rock sample, determining tunnel waste slag capable of being used as building material aggregate. The technical scheme of the embodiment of the invention is suitable for the early-stage design stage of railway engineering, the design quality and accuracy are improved, the waste slag utilization rate is increased, and the influence of railway construction on the environment is reduced.
Owner:CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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