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128 results about "Muck" patented technology

In the World Reference Base for Soil Resources and similar soil classification systems, a sapric is a subtype of a histosol where virtually all of the organic material has undergone sufficient decomposition to prevent the identification of plant parts. Muck is a sapric soil that is naturally waterlogged or is artificially drained.

Intelligent monitoring method for mucky soil foundation based on multi-source data fusion

The invention discloses a mucky soil foundation intelligent monitoring method based on multi-source data fusion, and particularly relates to the technical field of foundation monitoring and early warning. The method comprises the following steps: constructing an original soil body state data set of a mucky soil foundation, and carrying out anomaly elimination and time calibration based on a rheological constitutive model to generate a foundation state characteristic matrix; performing dynamic causal association tracking analysis on the feature matrix in a sliding window mode to generate a water-soil coupling drift parameter set; extracting a stress historical dependency coefficient set by using a nonlinear scale analysis method; and according to the water-soil coupling drift parameter set and the stress historical dependency coefficient set, the stability risk level of the mucky soil foundation is judged, and corresponding early warning information is selected from a preset graded early warning instruction database and output, so that the accuracy and adaptability of anomaly recognition and risk early warning are improved, and the accuracy and the adaptability of abnormal recognition and risk early warning are improved. The method is suitable for long-period stability monitoring and intelligent risk prevention and control of high-soft foundations or silt stratums.
Owner:GUANGZHOU PANYU POLYTECHNIC

Shield muck modified slurry grouting reinforcement effect evaluation method based on multi-data fusion

The invention discloses a shield muck modified slurry grouting reinforcement effect evaluation method based on multi-data fusion, and belongs to the field of shield construction grouting. The method comprises the steps that during field monitoring, a monitoring section is selected according to tunnel geology and structure characteristics, and a sensor is installed; acquiring data of soil pressure, displacement and pore water pressure, calculating corresponding change rate and gradient, and analyzing change trend. According to the numerical simulation, a three-dimensional model is established based on geological exploration and the like to determine parameters, shield propulsion and grouting reinforcement are simulated, and stratum deformation, soil stress and slurry diffusion and permeation data are obtained. And in the data fusion link, the two types of data are subjected to standardization processing, grouting reinforcement effect grades are divided to determine a prior probability, a probability distribution model is established for monitoring indexes, and a posterior probability is calculated through a Bayesian formula to determine an evaluation result. According to the method, various data are integrated, the reinforcement effect can be comprehensively and accurately evaluated, a scientific decision basis is provided for shield tunnel construction, the construction quality and safety are improved, and waste soil resource utilization is optimized.
Owner:SHANDONG JIANZHU UNIV

A full probability risk quantitative assessment method for landslides in muck yards considering the three-dimensional spatial variability of muck

The present invention discloses a full - probability risk quantitative assessment method for the landslide of a muck yard considering the three - dimensional spatial variability of muck, which includes the following steps: conducting borehole exploration of the muck yard site to obtain muck yard data; obtaining random field parameters characterizing the spatial variability of muck; simulating the three - dimensional spatial variation characteristics of muck; based on the limit equilibrium method, conducting the three - dimensional slope stability assessment of the muck yard and estimating the potential landslide volume; simulating the possible migration ranges under various landslide volumes; statistically collecting the life and property data of downstream disaster - bearing bodies, and based on the vulnerability assessment formulas for buildings and personnel, estimating the vulnerability of disaster - bearing bodies according to the landslide intensity; establishing a full - probability risk assessment formula for the muck yard landslide, and conducting quantitative risk assessment and risk rating. The present invention considers the unique spatial variation characteristics of muck, analyzes the stability, potential sliding position and volume from a three - dimensional perspective, and combines with the quantitative vulnerability assessment method to achieve accurate risk assessment.
Owner:ZHEJIANG UNIV

Method and system for predicting full mix proportion strength and modulus of sludge solidified soil

The invention discloses a method and system for predicting the full mix proportion strength and modulus of sludge solidified soil, and relates to the field of building materials, and the method comprises the following steps: obtaining related input data of the sludge solidified soil; constructing a physical information neural network model, and embedding a physical equation describing the mechanical behavior of the sludge solidified soil into the neural network model as a constraint; training a physical information neural network model by using the input data to enable model parameters to converge step by step, and comprehensively considering experimental data errors and physical equation residual errors in the training process; and using the trained and converged physical information neural network model to predict the strength and modulus of the sludge solidified soil. The system comprises all modules for implementing all the steps. According to the method, a traditional neural network is combined with a physical equation for describing the sludge solidified soil, and the problems that a traditional prediction method excessively depends on an empirical formula, the data demand quantity is large, and the generalization performance is poor are effectively solved.
Owner:CCCC HIGHWAY BRIDGES NATIONAL ENGINEERING RESEARCH CENTRE CO LTD

Sludge clay pile foundation drilling parameter regulation and control method and system

The invention discloses a mucky clay pile foundation drilling parameter regulation and control method and system, and belongs to the technical field of pile foundation drilling construction.The method comprises the steps that historical construction data of mucky clay pile foundation drilling is collected and preprocessed, and a data set is constructed; constructing and training a machine learning model based on the data set to obtain a drilling parameter time sequence prediction model; actual drilling parameters in the drilling process are collected in real time and compared with predicted drilling parameters output by the model, and drilling parameter errors are determined; and dynamically adjusting the drilling parameters of the drilling machine based on the drilling parameter error. According to the method, key parameters such as the drilling pressure, the rotating speed and the slurry concentration are intelligently regulated and controlled, so that the pile foundation construction efficiency and the hole forming quality in the complex soft soil stratum are improved, the construction risk is reduced, and the engineering safety is ensured.
Owner:CHINA RAILWAY BEIJING ENG GRP CO LTD +2

Slope environment sampling equipment for water and soil conservation

The invention relates to the technical field of side slope sampling, and discloses side slope environment sampling equipment for water and soil conservation, which comprises a sampling barrel, and further comprises a sampling disc fixedly mounted at the bottom of the sampling barrel; the sludge sampling assembly is arranged on the sampling disc, and the sludge sampling assembly is used for sampling side slope sludge; the sealing disc is slidably arranged in the sampling barrel, and a piston rod is vertically arranged at the top of the sampling barrel; the limiting and unlocking assembly is arranged at the top of the sampling barrel, and the limiting and unlocking assembly is used for limiting the piston rod. The device can sample water and sludge at the slope at the same time, avoids the situation that water and sludge samples need to be collected separately and cannot be collected at the same time, and consequently the overall sampling efficiency is low, and can also indicate when water sampling reaches the specified depth, so that the uniformity, accuracy and uniformity of the water sampling depth are guaranteed, and the sampling efficiency is improved. Therefore, the sampling effect of the equipment on the slope environment is improved.
Owner:GUANGDONG XINGYU WATER CONSERVANCY ENGINEERING CONSULTING CO LTD

Curing agent mix proportion design method for nomadic flow-state stabilized soil production line

The invention provides a curing agent mix proportion design method for a nomadic type flow state solidified soil production line, and belongs to the technical field of computational chemistry, the method comprises the following steps: collecting an original soil sample of a to-be-borrowed area such as a beach culture sludge area, carrying out basic property determination, and establishing a multilayer neural network original soil evaluation system to carry out quantitative evaluation on the adaptability of original soil; constructing a five-layer neural network curing agent constraint system to determine a ratio range; designing a test scheme by adopting a Latin hypercube sampling method; establishing a multi-layer neural network performance evaluation system and a reaction mechanism system for comprehensive evaluation; preparing a standard test block to determine engineering performance; a matching scheme is verified through production line trial production, an engineering performance verification matrix is established, and a fuzzy comprehensive evaluation method is adopted to ensure that the performance meets engineering requirements. According to the scheme, the systematic design and optimization of the curing agent ratio are realized through the synergistic effect of a plurality of neural network models.
Owner:CHINA CONSTR EIGHTH BUREAU DEV & CONSTR CO LTD

Method and device for detecting early consolidation pressure of cohesive soil

The invention provides a cohesive soil early consolidation pressure detection method and device, and belongs to the technical field of geotechnical engineering detection.The cohesive soil early consolidation pressure detection method comprises the steps that a structured database is established based on engineering area historical drilling data and geotechnical test data; extracting data subsets corresponding to the soil texture types from the database, and respectively constructing mucky soil and conventional cohesive soil early consolidation pressure prediction models; acquiring a standard volume soil sample and density and water content data thereof; drilling position coordinates, orifice elevation, sampling depth and soil sample specific gravity parameters are input; selecting a prediction model according to the soil texture type, inputting related data, and outputting an early consolidation pressure value; and comparing the early consolidation pressure value with the current effective self-weight stress, and judging the consolidation state of the soil body. According to the method, the detection period of the early consolidation pressure of the cohesive soil body is shortened, subjective factors in the manual curve drawing process are eliminated, and the data accuracy and the working efficiency are improved.
Owner:CHINA COMM CONSTR FIRST HARBOR CONSULTANTS

Shield muck heavy metal pollution intelligent sorting system and method based on multi-parameter online detection

The invention discloses a shield muck heavy metal pollution intelligent sorting system and method based on multi-parameter online detection, and relates to the field of shield muck sorting, the shield muck heavy metal pollution intelligent sorting system comprises a muck sample pretreatment module, an online detection module, a pollution evaluation analysis module, a sorting execution module and a linkage control feedback module; the muck sample pretreatment module is used for separating coarse particles with the particle size larger than 50 mm and impurities in shield muck through a vibrating screen. According to the method, the initial value of the fine-grained soil content is detected in real time, data is automatically corrected based on a preset intelligent densimeter and a traditional densimeter difference correction model, rapid measurement is achieved, the detection efficiency is improved, a dynamic correlation model of fine-grained soil component changes is constructed by combining auxiliary parameters such as the muck weight, the water content and coarse grain grading, and the detection accuracy is improved. And the working condition adaptation module is linked to automatically improve the fine-grained soil detection frequency when the stratum mutation is identified by the shield PLC parameters, so that the data is ensured to closely follow the stratum change.
Owner:CCCC (CHENGDU) MUNICIPAL CONSTRUCTION CO LTD

Geological punching equipment for mining

The invention relates to the technical field of geological punching, and particularly discloses geological punching equipment for mining, which comprises driving equipment capable of three-dimensionally adjusting, a mounting disc is fixedly mounted at the bottom end of the driving equipment, and a middle shaft is rotatably mounted in the mounting disc; and a rotating cylinder arranged outside the middle shaft in a sleeving mode is rotationally installed in a groove formed in the bottom end of the installation disc, a drill bit is fixedly installed at the end, extending out of the rotating cylinder, of the middle shaft, a spiral conveying groove is formed in the outer wall of the drill bit, and a soil inlet gap is formed between the rotating cylinder and the drill bit. According to the device, the soil inlet gap is formed between the drill bit and the rotating cylinder, so that muck generated during drilling of the drill bit enters the rotating cylinder, the muck is conveyed out of a blast hole along the rotating cylinder through the spiral piece, and the muck can be conveyed in a dry-type soil moving mode; and the phenomenon that the explosion performance or the explosion effect of explosives in the blast hole is affected by too high water content in the blast hole after slurry circulation is avoided.
Owner:SHANGRAO XINHAO OPTICAL CO LTD

Viscous shield muck foundation synchronous grouting utilization method and system, terminal and medium

The invention discloses a viscous shield muck base synchronous grouting utilization method and system, a terminal and a medium. The method comprises the steps that the soil type soil property of a stratum corresponding to shield muck is obtained; when it is judged that the shield muck does not meet the soil filling standard according to the soil properties, mineral components of the shield muck are determined; obtaining a synchronous grouting performance requirement, and determining a target geopolymer according to the synchronous grouting performance requirement; obtaining a grouting material ratio according to the mineral components and the target geopolymer; and after the grouting material is obtained according to the grouting material ratio, the grouting material is injected into a gap between a tunnel and a stratum through a grouting system at the tail of a shield tunneling machine, and monitoring information of ground surface settlement and duct piece floating is obtained in the synchronous grouting and shield tunneling process. The waste muck generated in shield tunnel construction can be effectively treated, the resource utilization rate of the shield muck is increased, and the treatment cost and the influence on the environment are reduced.
Owner:SHENZHEN UNIV

Large-strain consolidation algorithm, equipment and medium for horizontal vacuum dehydration of sludge

The invention relates to a large-strain consolidation algorithm, equipment and medium for horizontal vacuum dehydration of sludge, and the algorithm comprises the following steps: 1, obtaining basic parameters of a constitutive relation of a target soil body through an indoor consolidation experiment and a penetration experiment, 2, obtaining load conditions of the target soil body through surveying a geological exploration report and an engineering design scheme, the method comprises the steps of (1) establishing a one-dimensional PHD consolidation model, (2) establishing a one-dimensional PHD consolidation model and deducing a control equation under equal strain conditions, (3) introducing a virtual time step and calculating the consolidation degree in a manner of carrying out segmented increment processing on time, (4) establishing the one-dimensional PHD consolidation model and deducing a control equation under equal strain conditions, and (5) calculating the final consolidation degree based on the virtual time step and the control equation, and further comprises equipment and a medium. According to the method, the influence of non-uniform consolidation is incorporated into the one-dimensional theoretical consolidation analysis of the Taisha foundation, and the consolidation coefficient is corrected by using the control equation based on the virtual time step and the strain condition, so that convenient and accurate consolidation calculation is realized.
Owner:HENAN UNIVERSITY OF TECHNOLOGY

Shield muck and gravel separation device

The utility model discloses a shield muck and gravel separating device, and belongs to the field of shield muck and gravel. The shield muck and gravel separation device comprises a bucket, the interior of the bucket communicates with a filter cylinder, the surface of the filter cylinder is provided with an adjusting structure, the adjusting structure comprises an adjusting cylinder arranged on the surface of the filter cylinder in a sleeving mode, and the surface of the adjusting cylinder is provided with a through hole communicating with the filter cylinder. The adjusting cylinder can change the staggered communication area of the through hole and the filter cylinder in a rotating mode, a control structure is arranged on the back face of the bucket, and the control structure can control the adjusting cylinder to rotate; small stone and soil are filtered and separated through the filter cylinder by utilizing the through holes communicated with the surface of the adjusting cylinder, and the communicating area of the through holes in the surface and the filter cylinder can be changed by the rotatable adjusting cylinder, so that the effect of adjusting the filtering size is achieved, and the screening and separating requirements of the soil and the stone with different particle sizes are met.
Owner:GUANGZHOU PANYU QIAOXING CONSTR INSTALLATION ENG CO LTD

Method for measuring three-dimensional information of muck pile rock

The invention provides a method for measuring three-dimensional information of muck pile rocks, relates to the technical field of blasting, and aims to identify, analyze and process muck pile images, conveniently acquire a plurality of rocks and respective two-dimensional information from the muck pile images, and construct a plurality of initial three-dimensional models corresponding to the rocks on the basis of the two-dimensional information. Then, a lumpiness distribution curve obtained through actual sampling and screening of the muck pile is used as a benchmark, the data basis is combined, a target three-dimensional model is selected from the multiple initial three-dimensional models corresponding to each rock block, the target three-dimensional model is corrected through the lumpiness distribution curve, and therefore the target three-dimensional model is closer to the actual three-dimensional model of the rock block, and therefore the actual three-dimensional model of the rock block is obtained. The three-dimensional information, obtained according to the target three-dimensional model, of each rock block can accurately represent the actual three-dimensional size of the rock block, so that a reliable basis is provided for accurate evaluation of the blasting effect, and the technical progress of the blasting engineering field is promoted.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI +1

Shield muck ecological influence assessment method based on Hakanson-LCA

The invention discloses a Hakanson-LCA-based shield muck ecological influence assessment method, and relates to the field of shield muck ecological influence assessment. A Hakanson ecological risk assessment method and an LCA method are combined, and meanwhile, the potential ecological risk of heavy metal elements in shield muck and the carbon emission influence generated in the resource utilization and landfill disposal process are assessed; through the dual evaluation method, comprehensive analysis can be carried out on the muck from two dimensions of environmental pollution and climate change, more comprehensive ecological influence evaluation is provided, and a scientific basis is provided for environmental protection and waste management.
Owner:SICHUAN HIGHWAY PLANNING SURVEY DESIGN AND RESEARCH INSTITUTE LTD +3

Shield mud-water separation comprehensive treatment system and method in complex geological environment

The invention discloses a shield mud-water separation comprehensive processing system and method in a complex geological environment, and relates to the technical field of shield construction, and the method comprises the steps: collecting geological parameters and mud parameters of a construction area in real time, and synchronizing the geological parameters and mud parameters to a data processing unit through an Internet of Things transmission protocol; the propelling speed of hydraulic equipment of the shield tunneling machine and operation parameters of mud-water separation equipment are synchronously adjusted, and the mud separation efficiency and the shield tunneling speed are dynamically matched; monitoring performance indexes of the separated mud in real time, feeding back the performance indexes to a geological data fusion algorithm and a reinforcement learning algorithm, and updating a dynamic correction coefficient and a reward function weight; and carrying out filter-pressing dehydration on the solid muck after mud-water separation, detecting the heavy metal content, and uploading the heavy metal content to a block chain distributed account book in real time for evidence storage. On the basis of a feedback closed loop of real-time monitoring data, processing parameters and algorithm weights are continuously adjusted, the adaptive capacity to sudden change working conditions of a complex geological environment is enhanced, and efficient matching of the slurry separation efficiency and the tunneling speed is achieved.
Owner:GUANGZHOU WEISHI ENVIRONMENTAL PROTECTION TECH CO LTD

Shield muck fine-grained soil content real-time detection system based on multi-parameter fusion and deduction method

The invention relates to the technical field of shield construction, in particular to a shield muck fine-grained soil content real-time detection system and deduction method based on multi-parameter fusion, and the system comprises a multi-parameter sensor unit, a data acquisition and transmission unit, a data processing and analysis unit and a display unit. According to the system, the content of fine-grained soil in muddy water separated from the muck is rapidly detected by using an intelligent densimeter after the muddy water is precipitated, a correction algorithm based on a data difference rule obtained by an indoor test is introduced, fine-grained soil content data detected by the intelligent densimeter is corrected, and a multi-parameter fusion algorithm is applied to determine the content of the fine-grained soil in the muddy water. Various processed shield muck data are comprehensively analyzed, rapid detection and analysis of fine-grained soil component changes in the shield muck are achieved, the problems that a traditional densimeter method is long in time consumption, complex in operation and poor in adaptability are solved through the system, real-time monitoring of the fine-grained soil content is achieved through the detection system, and the detection accuracy of the fine-grained soil component changes in the shield muck is improved. And a basis is provided for resource utilization of the muck.
Owner:CCCC (CHENGDU) MUNICIPAL CONSTRUCTION CO LTD

Fluidized solidified soil prepared from engineering residue soil and preparation method thereof

The invention discloses fluid-state solidified soil prepared from engineering residue soil and a preparation method thereof, belongs to the technical field of building materials, and aims to effectively improve the impermeability, strength and flowability of the fluid-state solidified soil and solve the problems of poor seawater erosion resistance, poor flowability, weak stability and the like of the fluid-state solidified soil in a marine environment in the prior art. A large amount of wastes such as the engineering residue soil, the fly ash and the slag powder are used, dependence on natural resources is reduced, and meanwhile, the environmental protection problem of the wastes is effectively solved. And industrial waste is converted into useful building materials, so that the recycling of resources is promoted, and the concept of sustainable development is met.
Owner:SHENZHEN SPECIAL ECONOMIC ZONE CONSTR ENG SOLID WASTE RECYCLING CO LTD

Layered backfilling and ecological regreening system for flow-state solidified soil of anchoring ditch of refuse landfill

PendingCN121589101AHops/wine cultivationTransportation and packagingSustainable engineeringMuck
The invention discloses a layered backfilling and ecological regreening system for flow-state solidified soil of an anchoring ditch of a refuse landfill. The layered backfilling and ecological regreening system comprises a muck (weathered rock) pretreatment unit, a flow-state solidified soil production unit, an ecological regreening unit, a pumping backfilling unit and an intelligent regulation and control unit. According to the system, the structure reinforcing function and the ecological restoration function are successfully integrated, and a brand-new and sustainable engineering residue soil (weathered rock) resource utilization and ecological backfill solution is provided.
Owner:GEZHOUBA ZHONGGU TECH CO LTD +1

Sludge in-situ solidification embankment technology intelligent control system and full-process quality control method

The invention discloses an intelligent control system and a full-process quality control method for a sludge in-situ solidification embankment technology, the system comprises a solidification material slurry preparation and closed-loop control module, an on-line density meter is used for monitoring the slurry density in real time and feeding back and adjusting ingredients, and it is ensured that the slurry quality is stable; the construction front-end intelligent sensing and regulating module is used for inverting a soil body state through mechanical dynamics data such as torque and rotating speed, and regulating slurry or clear water injection parameters in a self-adaptive manner; the intelligent stuffy material time prediction module is used for predicting the optimal stuffy material time length based on the environment and material data; the digital twinning and quality tracing module integrates multi-source data and realizes visualization and quality tracing of the whole construction process; according to the invention, intelligent closed-loop control of slurry preparation, stirring construction and material covering processes is realized, soil texture variation is effectively dealt with, and the uniformity and reliability of construction quality are remarkably improved.
Owner:NANJING HYDRAULIC RES INST

Improved deep learning-based solidified soil strength prediction method and related device

The invention discloses a solidified soil strength prediction method based on improved deep learning and a related device, and the prediction method comprises the steps: inputting a to-be-predicted soil sample basic physical characteristic parameter and a solidification test sample preparation parameter into a pre-trained deep learning neural network model, and outputting a soil sample strength index prediction result; the model construction and training method comprises the following steps: acquiring a sample data set; performing pretreatment; constructing a multi-layer neural network architecture, determining an optimal hidden layer number and an optimal hidden layer node number based on the sample data set, and obtaining a target neural network; and optimizing the weight of the target neural network by adopting the sample data set to obtain a trained deep learning neural network model. According to the method, a two-stage optimization mechanism is adopted, global optimization of the model structure and the model weight is achieved, the prediction effect is remarkably improved, the model training efficiency is improved, an interpretable machine learning technology is innovatively introduced, and an innovative solution is provided for intelligentization of resource utilization of muck and slurry.
Owner:SHANGHAI MUNICIPAL ENG DESIGN INST (GRP) CO LTD

Wet magnetic separation repair process for heavy metal residue soil mixture

The invention relates to the technical field of soil remediation processes, and provides a heavy metal muck mixture wet magnetic separation remediation process, which comprises the following steps: ectopic soil sampling: carrying out three-dimensional deep soil sampling on a marked land parcel and ectopic storage; pretreatment is conducted, specifically, the soil stored in different positions is subjected to crushing treatment; pulping: adding water into the crushed ex-situ soil, and stirring to obtain slurry; local dilution and magnetic suction impurity removal are conducted, specifically, the slurry penetrates through a magnetic suction area in a flowing mode, local dilution is conducted on the magnetic suction area, and adsorbed impurities in the magnetic suction area are removed; performing dehydration detection, namely dehydrating the mud subjected to magnetic suction impurity removal, performing heavy metal detection, and judging whether detection is qualified or not; and backfilling is conducted, specifically, the soil is backfilled after detection is qualified. By means of the technical scheme, the problem that in the prior art, the traditional ex-situ leaching remediation effect of the soil polluted by the heavy metal muck mixture is poor is solved.
Owner:上海久澄环境工程有限公司

A rapid comprehensive evaluation method and device for the performance of tunnel muck used in manufactured sand and gravel

The present invention relates to a method and device for rapidly and comprehensively evaluating the performance of tunnel muck used for manufactured sand, comprising the following steps: 1) Specimen preparation: Using a vibration device (1), a temperature control device (3), and a weighing device (10) to rapidly obtain dried and saturated surface-dry specimens. 2) Apparent density and water absorption test: Measuring the mass of water discharged by a known mass of saturated surface-dry specimens and heating to obtain the mass of the dried specimens. 3) Crushing index and softening coefficient test: Pressurizing, automatically screening, and weighing the dried and saturated surface-dry specimens respectively. 4) Soundness test: Realizing the rapid test of soundness based on temperature control, automatic screening, and weighing. 5) Automatic data acquisition and processing: Automatically acquiring and processing the above data. The evaluation method and device proposed by the present invention can simultaneously and rapidly test the physical and mechanical properties and durability of muck, solve the problems such as long test cycle and single test result of muck performance, and are applicable to the rapid evaluation of manufactured sand parent rocks such as muck, pebbles / gravels.
Owner:RAILWAY CONSTR RES INST OF CHINA ACAD OF RAILWAY SCI CO LTD +2

Comprehensive evaluation method for slope restoration effect and ecological carbon sink potential of improved sludge

A comprehensive evaluation method for the slope restoration effect and the ecological carbon sink potential of improved sludge comprises the steps that S1, the weights of a stability index and an ecological carbon sink potential index are determined to be A1 and B1 respectively, and A1 + B1 = 1; s2, the weights of the anti-scouring property and the adhesion property are determined and are a1 and a2 respectively, and a1 + a2 = 1; s3, assigning Aa1 to the anti-scouring property in the step S2, and assigning Aa2 to the adhesion property; s4, the weights of the vegetation growth condition and the microbial conversion efficiency are determined to be b1 and b2 respectively, and b1 + b2 = 1; s5, assigning Bb1 to the growth condition of the vegetation on the surface layer of the side slope in the step S4, and assigning Bb2 to the microbial conversion efficiency of the improved sludge; and S6, performing comprehensive evaluation according to the evaluation elements, the weights A1, B1, a1, a2, b1 and b2 and the assigned values Aa1, Aa2, Bb1 and Bb2 of the evaluation indexes. According to the method, a basis can be provided for evaluating the longevity and stability of exposed side slope alien soil ecological restoration, later maintenance of exposed side slope ecological restoration is guided, and whether repeated restoration needs to be carried out or not is evaluated.
Owner:HUAIYIN INSTITUTE OF TECHNOLOGY

Fluidized solidified soil as well as preparation method and application thereof

The invention relates to the technical field of building materials, in particular to flow-state solidified soil as well as a preparation method and application thereof. The flow-state solidified soil comprises the following components in percentage by mass: 50%-60% of muck, 35%-40% of water and 5%-13% of a curing agent, wherein the curing agent is prepared from the following components in parts by weight: 5 to 25 parts of cement clinker, 25 to 50 parts of superfine slag powder, 10 to 25 parts of fly ash, 10 to 20 parts of waste gypsum, 10 to 20 parts of mountain flour slag, 1 to 3 parts of anti-dispersing agent and 1 to 5 parts of water reducing agent. According to the invention, the defect that the plugging effect is poor when cement paste is used as a drilling hole exploration plugging agent at present can be improved.
Owner:SHENZHEN HONGYEJI GEOTECHNICAL TECH CO LTD

A method, system, storage medium and slurry shield machine for analyzing the flow velocity to prevent the formation of mud cakes on the excavation face of a slurry shield

The present invention discloses a flow velocity analysis method, system, storage medium, and slurry shield machine for preventing mud cake formation on the excavation face of a slurry shield. The method includes the following steps: obtaining the soil physical properties, mud parameters, and stratum parameters of the current shield excavation; obtaining the soil viscosity index, undrained shear strength, and interfacial shear strength; obtaining the soil adhesion, soil cohesion, and fluid forces acting on soil particles; establishing a mathematical model of the critical flow velocity for different starting methods under different working conditions; obtaining the critical slurry flow velocity for different starting methods under different working conditions; and obtaining the critical flow velocity for preventing mud cake formation. The present invention can adapt to different working conditions and different starting methods, quickly determine the critical flow velocity for preventing mud cake formation, avoid the tedious process of frequently adjusting the mud flow velocity in traditional construction, and significantly improve construction efficiency.
Owner:CENT SOUTH UNIV

A method for pit-in-pit construction in a mucky soil area

The application discloses a kind of mucky soil area pit-in-pit construction methods, the method comprises: one, construction pit bottom reinforcing construction structure;Two, construction steel sheet pile;Three, excavate top layer earthwork;Four, excavate and support inside earthwork excavation area;Five, excavate first layer annular soil pit and third layer inside soil pit;Six, excavate second layer annular soil pit and fourth layer inside soil pit;Seven, pour pit-in-pit pile cap and remove steel sheet pile.The application is excavated before whole earthwork, and steel sheet pile is struck, and pit-in-pit and steel sheet pile outside earthwork excavation are formed under the premise of guaranteeing construction safety, and the construction period of whole raft is greatly shortened, and large foundation pit whole supporting system is formed faster, and the exposure time of deep foundation pit is reduced, and the construction operation risk of mucky soil deep foundation pit is reduced;Through the process of pre-striking steel sheet pile, steel sheet pile whole pile is completed once, and the strength of steel sheet pile body and water-resisting effect are guaranteed.
Owner:SHAANXI CONSTR ENG GRP NO 7 BUILDING ENG

Tailing pond drainage culvert transformed seepage water collecting well

The utility model provides a tailing pond drainage culvert transformation seepage water collecting well which comprises a foundation soil layer, a vertically-extending collecting well body is arranged on the foundation soil layer, an obliquely-arranged intercepting grating is detachably connected to a well opening of the collecting well body, the left end of the intercepting grating is lower than the right end of the intercepting grating, and a settling pond with an upper opening structure is arranged on the left side of the collecting well body. The top of the sedimentation tank is flush with the left end of the interception grating; water seepage holes are formed in the inner side wall of the collecting well; the outer side of the collecting well is wrapped with a filtering layer, and the filtering layer is used for filtering seepage water seeping from the water seepage holes; the collecting well is internally provided with a sludge scraper capable of moving up and down, radial gaps of the collecting well are filled with the sludge scraper, the sludge scraper extends upwards, and the top of the sludge scraper is provided with an inclined plane inclined towards the axis of the sludge scraper. Meanwhile, impurities on the interception grating are washed through seepage water and are uniformly collected in the sedimentation tank.
Owner:河南安钢集团舞阳矿业有限责任公司 +1

Vertical stirring device for ultra-deep and large-volume flowing muck

The utility model relates to a vertical stirring device for ultra-deep and large-volume flowable muck. When a traditional excavator conducts mixing and stirring operation, certain radian exists, full covering of muck is difficult to achieve, and due to the fact that the one-time excavation volume of a muck hopper is large, even mixing is difficult to achieve, and the mixing efficiency is low. The vertical stirring device is arranged above a slag pool and comprises a supporting mechanism, a vertical stirring mechanism and two longitudinal walking mechanisms, the longitudinal walking mechanisms are arranged at the upper ends of the two longitudinal side walls of the slag pool respectively and can longitudinally move along the slag pool, the two ends of the supporting mechanism are arranged above the longitudinal walking mechanisms, the vertical stirring mechanism is suspended on the supporting mechanism, and the vertical stirring mechanism is arranged on the vertical stirring mechanism. And the vertical stirring mechanism can transversely move along the supporting mechanism. According to the utility model, the full coverage of ultra-deep and large-volume muck stirring can be realized, the mixing uniformity of various large-volume materials is improved, and the construction efficiency of mixing and stirring materials such as large-volume flowable muck is further improved.
Owner:CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP

Self-water-absorption fracturing device for mucky soil and grouting method for mucky soil

The invention relates to a self-water-absorption fracturing device for mucky soil and a grouting method for the mucky soil, the self-water-absorption fracturing device comprises a water-absorption fracturing assembly, the water-absorption fracturing assembly comprises a water-absorption resin body, a water-permeable forming layer and a water-permeable supporting layer, a containing space is formed in the inner side of the water-permeable forming layer, the water-absorption resin body is located in the containing space, and the water-permeable supporting layer is located in the containing space. The accommodating space is used for accommodating a plurality of water-absorbent resin particles so as to form a water-absorbent resin body on the inner side of the water-permeable forming layer; the periphery of the water-permeable forming layer is coated with the water-permeable supporting layer, and the water-permeable supporting layer is used for supporting the formed water-absorbent resin body; and the water absorption fracturing assembly is inserted into a grouting hole pre-formed in the mucky soil, so that water in the mucky soil is absorbed through the water absorption resin body, and the mucky soil cracks through water absorption expansion of the water absorption resin. The technical problems that slurry for reinforcing mucky soil diffuses unevenly, and the reinforcing effect is poor are solved.
Owner:GUANGDONG ELECTRIC POWER PLANNING SURVEY & DESIGN INST +1