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15 results about "Phyllite" patented technology
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Phyllite is a type of foliated metamorphic rock created from slate that is further metamorphosed so that very fine grained white mica achieves a preferred orientation. It is primarily composed of quartz, sericite mica, and chlorite.
Extremely soft phyllite tunnel surrounding rock parameter inversion method and system
The invention discloses an extremely soft phyllite tunnel surrounding rock parameter inversion method and system, and relates to the technical field of tunnel engineering. Comprising the following steps: acquiring basic mechanical parameters, partial pressure parameters and damage parameters of a rock mass; determining to-be-inverted parameters of the rock mass and setting a value range, and performing sensitivity analysis on the to-be-inverted parameters; carrying out a mixed horizontal orthogonal experiment on the to-be-inverted parameters based on a sensitivity analysis result, and carrying out numerical simulation on the rock mass; constructing a prediction model by utilizing a support vector machine (SVM), taking a numerical simulation result as input, and training the model by adopting a random division cross validation method; and predicting the optimal solution of the to-be-inverted parameters of the rock mass by using the trained prediction model. Based on sensitivity analysis of a single to-be-inverted parameter of the HJC model, parameters which greatly influence response variables are identified, so that the proportion of the key factors in a mixed level orthogonal experiment is increased by focusing on the key factors, and the efficiency and accuracy of model training are greatly improved.
Owner:中铁二十四局集团西南建设有限公司 +2
Comprehensive utilization method of waste rocks
PendingCN121198717ATransportation and packagingSolid waste disposalMining engineeringEnvironmental engineering
The invention discloses a comprehensive utilization method of waste rocks, which comprises the following steps: S1, pre-selecting the waste rocks, and sorting the stockpiled waste rocks by using a magnetic pulley; s2, carrying out coarse crushing and fine crushing on the phyllite until the granularity is 0-2mm, and then carrying out fine grinding and superfine jet milling to obtain powder with the medium fineness of 15-20 microns of the inorganic mineral filler for subsequent surface modification of the phyllite; s3, the powder obtained in the step S2 is pulped, meanwhile, octadecylamine is added for modification, and the use amount is 1.2 wt%; s4, the octadecylamine modified powder and an auxiliary agent PP are mixed to be uniform, a mixture is obtained, and the weight ratio of the powder to the auxiliary agent PP is 30: 100; s5, the mixture is compounded with a flame retardant DBDPE and a flame retardant synergist Sb2O3 according to the compounding ratio of 20: 2.5: 7.5, and the flame-retardant phyllite filler is obtained.
Owner:GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
A method for jointly reducing the swelling property of phyllite soil by using red clay and lime
This application relates to a method for jointly reducing the expansibility of phyllite soil by using red clay and lime. The specific steps are as follows: adding dry red clay with a mass of m1 and lime with a mass of m2 to completely weathered phyllite with a mass of m0 for composite improvement. Denote m1 / (m0 + m1) as the mixing ratio λ of red clay, and denote m2 / (m0 + m1) as the lime content η, to form a mixed filler with a free swell ratio lower than 4% and a swelling force not greater than 125 kPa. The range of the mixing ratio of red clay in the mixed filler is 40% - 60%, and the range of the lime content is 3% - 5%. By incorporating a certain proportion of red clay and lime into phyllite soil, the present invention forms a composite improved soil, greatly reducing the swelling force and free swell ratio, and enabling the compacted subgrade soil to have a certain degree of compactness, making the compacted subgrade not easily pulverized, reducing dust, reducing the dosage of lime by incorporating red clay, and at the same time disposing of this special soil of red clay, reducing engineering waste.
Owner:EAST CHINA JIAOTONG UNIVERSITY
Prediction Method, Device and Product for Creep Parameters of Phyllite Tunnel Surrounding Rock
ActiveCN116050273BDesign optimisation/simulationSpecial data processing applicationsMonitoring siteClassical mechanics
An embodiment of the present invention provides a method, device and product for predicting creep parameters of phyllite tunnel surrounding rock, which relates to the field of rock mechanics. In the embodiment of the present invention, first, the indoor creep test results of the rock are fitted with the creep damage constitutive equation to obtain the initial creep parameters of each monitoring point. Then, based on the above initial creep parameters, multiple groups of surrounding rock creep parameters are generated through an orthogonal experimental scheme. Numerical simulation calculations are respectively performed on the multiple groups of surrounding rock creep parameters and the initial creep parameters of other monitoring points to generate multiple groups of training samples corresponding to each monitoring point. A neural network inversion model of the surrounding rock is established through a neural network model. Finally, the actual monitored deformation amount at the tunnel site is substituted into the inversion model to invert the creep parameters of the surrounding rock. In the embodiment of the present invention, according to the engineering geological characteristics of the surrounding rock at each monitoring point, the control variable method is used to establish the inversion models of the surrounding rock near each monitoring point respectively, so as to improve the accuracy of inversion.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
Pile foundation pore-forming slurry construction method suitable for phyllite stratum
The invention relates to a pile foundation pore-forming slurry construction method suitable for a phyllite stratum, and belongs to the technical field of phyllite stratum slurry construction. Sodium carbonate is accurately proportioned to adjust the pH value so as to inhibit rock stratum hydrolysis, bentonite is matched to improve the colloid rate so as to form a compact slurry cake, polyanionic cellulose is introduced as an intelligent conditioning agent, and the pile foundation pore-forming slurry construction method suitable for the phyllite stratum is prepared. The molecular chain structure can form a three-dimensional network to enhance the wall protection effect when a stratum is broken, construction sections are divided according to the integrity of the stratum, a basic formula is adopted for stabilizing the stratum to ensure the hole forming efficiency, a cellulose additive is actively activated in a broken zone to form viscoelastic fluid, and then through combined purification of a positive circulation system and a sediment separator, the construction efficiency is improved. The sand content is strictly controlled, the mud suspension force and the stratum seepage pressure are dynamically balanced in cooperation with specific gravity adjustment, and the problem that the mud performance of the phyllite stratum is dynamically matched with the geological conditions is systematically solved through a synergistic mechanism of formula optimization, staged application, circulating purification and dynamic regulation and control.
Owner:HUBEI JIAOTONG TOU SHIWUNAN EXPRESSWAY CO LTD +1
Mineralized filter material and method of making and mineralized filter
The application provides a mineralized filter material, a preparation method thereof and a mineralized filter core. The mineralized filter material comprises modified calcite carbonate rock, modified crystalline limestone, modified phyllite and modified granodiorite porphyry. The mineralized filter material comprises modified geological materials with specific components, and when used in a mineralized filter core of a reverse osmosis water purifier, can precipitate various beneficial elements such as calcium, magnesium, lithium, strontium, zinc and boron, and improve the water quality of the reverse osmosis water purifier, and obtain drinking water based on Kunlun Mountain spring water.
Owner:青岛海尔施特劳斯科技有限公司 +2
Phyllite tunnel surrounding rock large deformation risk discrimination method, device and product
ActiveCN116167295BData processing applicationsDesign optimisation/simulationResidual strengthLarge deformation
The embodiment of the present application provides a phyllite tunnel surrounding rock large deformation risk discrimination method, device and product, and relates to the field of rock mechanics. In the embodiment of the present application, based on Hoek-Brown criterion, the value of soft rock GSI is quantified by introducing rock mass blockiness index coefficient RBI and rock block damage index VI, the surrounding rock geological damage degree is obtained by using the residual strength method, compared with the maximum creep cracking damage obtained by indoor test, and the preliminary identification method of the large deformation of the surrounding rock in the field is established. Thus, the engineering geological characteristics can be obtained by surveying the unexcavated surrounding rock, and then the rock mass geological damage degree and the maximum creep cracking damage are calculated based on the engineering geological characteristics, so as to preliminarily identify whether the surrounding rock of the unexcavated section of the tunnel has the large deformation risk, thereby guiding the tunnel excavation and support of the subsequent to-be-excavated section, and providing a reliable basis for the disaster reduction and prevention of large deformation disasters in the field of tunnels and underground engineering.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
Reinforced phyllite soil and stone mixed filling vibration rolling reinforcing device
Owner:安徽交控工程集团有限公司
Grouting reinforcement method for-780m inclined shaft mining transfer double-chamber-connection roadway
The invention discloses a grouting reinforcement method for-780m inclined shaft mining transfer double-chamber-connection roadway, which adopts a'short-long-connection roadway 'three-stage synergistic process aiming at the geological problems of carbonaceous phyllite and surrounding rock crushing, high ground pressure, easiness in argillization and the like: in the first stage, a loose circle is quickly closed through a 2.3 m shallow hole; in the second stage, a three-dimensional arch shell is constructed at the position, 5-10 m away from the periphery of the chamber, of the 25 m deep hole to bear deep ground stress; and in the third stage, a transverse support is formed in the 15 m connection roadway, and a shell-arch-beam combined bearing system is achieved. P.O42.5 cement and composite additives (a water reducing agent, bentonite, an expanding agent and an accelerator) are adopted for grouting, the viscosity is 38-40 s, and the 24-hour strength is larger than or equal to 6 MPa. The construction process comprises sequential densification grouting, staged drilling, plugging with a plugging agent, pressure control and the like, the strength of surrounding rock after grouting is improved to 50-150 MPa, deformation is remarkably reduced, and the method is suitable for deep complex geology large-span chamber reinforcement.
Owner:五矿世纪矿业(鞍山)有限公司
Carbonaceous phyllite soft stratum tunnel structure and excavation method thereof
ActiveCN119616496Areduce softnessreduce landslidesUnderground chambersHydro energy generationRock boltPhyllite
Owner:CRPCEC SHENZHEN ENG +1
Phyllite stratum TBM tunnel combined support surrounding rock stability machine learning evaluation method
The invention relates to the field of underground engineering technology and mechanical equipment, in particular to a phyllite stratum TBM tunnel combined support surrounding rock stability machine learning evaluation method, which comprises the following steps: constructing a three-dimensional continuous-discrete coupling model; simulating the model, and constructing a structured data set based on a simulation result; the method comprises the steps that a data set is preprocessed, the preprocessed data set is divided into a training set and a test set, a stacked integrated learning model is built, the stacked integrated learning model comprises a base classifier and a meta classifier, the base classifier is trained through a k-fold cross validation method, the test set is predicted through the trained base classifier, prediction features are used as a new test set, and the new test set is used as the test set. Training a meta-classifier by using the new training set and the new test set to obtain a trained meta-classifier, and constructing a trained stacked ensemble learning model; and inputting the new training set into the trained stacked ensemble learning model to verify the model. According to the invention, efficient and accurate evaluation of the surrounding rock stability can be realized.
Owner:ANSTEEL GROUP MINING CO LTD
Deformation-allowed tunnel lining structure in voluntary system phyllite stratum
The utility model discloses a deformation-allowed tunnel lining structure in a voluntary system phyllite stratum. The tunnel lining structure sequentially comprises a secondary lining layer, an asphalt concrete layer, a primary lining layer and a surrounding rock layer from outside to inside, a deformation release assembly is connected between the primary lining layer and the secondary lining layer and arranged in the length direction of the tunnel, the top face of the deformation release assembly is attached and fixed to the primary lining layer, the bottom face of the deformation release assembly is attached and fixed to the secondary lining layer, and a cavity between the primary lining layer and the secondary lining layer is filled with an asphalt concrete layer. The deformation release assembly comprises an upper steel plate and a lower steel plate, the lower steel plate is located under the upper steel plate and arranged in parallel, a rubber elastic support and a sliding ball joint are further arranged between the upper steel plate and the lower steel plate, the rubber elastic support is located on the left side of the deformation release assembly, and the sliding ball joint is located on the right side of the deformation release assembly.
Owner:CHINA RAILWAY NO 9 BUREAU GRP NO 1 CONSTR CO LTD +3
Composite filter element capable of simulating quality of underground water in Kunlun Mountain and preparation method thereof
The invention discloses a composite filter element capable of simulating the quality of underground water in Kunlun Mountain and a preparation method. The composite filter element comprises modified phyllite, modified granite, modified jade carbonate rock, modified crystal limestone and a binder. The modified phyllite, the modified granite, the modified jade carbonate rock and the modified crystal limestone are large in pore volume, pore diameter and specific surface area, when the composite filter element is used for filtering water, the contact area of the modified rock and the water is large, the content of Al and Ca in silicate rock mineral lattices is reduced, the content of Mg and Si is increased, and the water quality is improved. The modified rock can release mineral substances such as Ca, Si and Mg into water, the calcium-magnesium ratio in the water is reduced, the water quality is close to the water quality of Kunlun Mountain underground water, in addition, the modified rock can dissolve out trace elements such as strontium, lithium and boron, and a water source with the same water quality as the Kunlun Mountain underground water is obtained. In addition, the invention further provides a preparation method of the composite filter element.
Owner:WUHAN ZONDY W&R ENVIRONMENTAL TECH CO LTD
Blasting excavation construction method for manual hole digging piles in Yuyun phyllite rock area
The invention relates to the technical field of geotechnical engineering and blasting construction, in particular to a blasting excavation construction method for a manual hole digging pile in a silk phyllite region, which comprises the following steps of: selecting rock emulsion explosive and a second delay electric detonator, preparing a portable exploder, arranging a drilling point, drilling by adopting a rock drill, cutting a straight hole, and connecting a blasting network in a bunchy manner. The bundles are connected through a four-way joint, and detonating is conducted through a detonating tube. Original manual rock crushing is changed into accurate blasting one-time forming crushing, the hole forming efficiency of a single pile hole is greatly improved, the overall construction period of pile foundation construction is effectively shortened, the total number of workers needed for pile hole excavation is reduced, and the under-hole operation time of operators is shortened.
Owner:CHINA MCC22 GROUP CORP LTD
A method for regulating and adjusting the expansion and contraction ratio of phyllite soil with different subgrade depths
This application relates to a method for adjusting the swelling and shrinkage rate of phyllite soil at different subgrade depths. It includes the following steps: preparing test soil samples using red clay and cement-based permeable crystalline waterproofing material CCCW as phyllite soil improvement components; calculating the vertical pressure corresponding to different subgrade depths h and establishing the correlation between vertical pressure and subgrade depth; establishing a linear mathematical model of the total swelling and shrinkage rate of the improved soil under load with the red clay admixture ratio and CCCW admixture content through orthogonal experiments; finally, using a total swelling and shrinkage rate of 0.7% and 2.5% as control targets, coupling the depth load model with the linear mathematical model between red clay and depth, determining the appropriate phyllite-red clay-CCCW composite filler ratio and filling scheme for different subgrade depths. This invention achieves precise customization of the improved filler ratio under different subgrade depth conditions, effectively suppressing the swelling and shrinkage deformation of phyllite soil, improving the long-term stability of the subgrade, and reducing engineering costs.
Owner:EAST CHINA JIAOTONG UNIVERSITY