CN104609773B - A kind of preparation method of movable bed sediment model test synthesising biological matter model sasnd - Google Patents

Abstract

The preparation method that the invention discloses a kind of movable bed sediment model test synthesising biological matter model sasnd, carries out timber or carbonization wooden, rice husk raw material processes；Temperature 180 DEG C～800 DEG C；It is crushed to below 300 orders, takes the ratio mixing of biomass carbon 30～40 parts, hargil or superfine talcum powder 10～20 parts, 50～70 parts of phenolic resin, form model sasnd compound；Extruded machine fusion treatment, temperature is 180 DEG C～200 DEG C, more than 2 hours retention time, it is thus achieved that synthesis charcoal consolidation base material；Pulverize sorting, it is thus achieved that being suitable for the model sasnd of test needs, particle size range is 0.08mm～5.0mm.Synthesising biological matter model sasnd, have that unit weight is adjustable, grain diameter is adjustable, particle size range is wide, grain shape is close to natural sand, stable performance, the advantage such as cheap, outstanding husky model, bed-sit model and complete husky model test use can be suitable for simultaneously, provide new choosing sand approach for design of movable model particularly complete husky modelling and choosing sand.

Description

A kind of preparation method of movable bed sediment model test synthesising biological matter model sasnd

Technical field

The invention belongs to the movable bed sediment model experimental technique field of simulating river, relate to a kind of preparation method for water conservancy project, river work and harbor work's movable bed sediment model test synthesising biological matter model sasnd.

Background technology

Model sasnd is indispensable stock in movable bed physical experiments, and model choosing sand is also one of key technology of movable bed sediment model design.For abnormal movable bed model, for meeting unidirectional suspension or starting the model of requirement of similarity, model selects sand to be easier, but if to meet silt and suspend, start and river bed deformed similarity simultaneously, then the requirement of model choosing sand is higher.Due to the husky defect in unit weight, particle diameter, performance etc. of current existing conventional model, the defect that particularly unit weight is fixing, when making modelling, only by adopting the way adjusting grain diameter, reach the requirement that model is similar, model selects sand to be extremely limited, and even sometimes seems very difficult, and this factor becomes restriction at present and affects the main cause of sediment model experiment technical merit and test accuracy.Therefore research and development physical and chemical performance is stable, granule unit weight, particle diameter can be adjusted as required, cheap practicality, the model sasnd of requirement of similarity can be met, for improvement and developmental researches such as simulating river and river course, navigation channel, seashores, there is important theory significance and engineering use value.

For overcoming conventional model husky (such as coal, wood flour, phenolic moulding powder etc.) to consolidate, flake, bubble, go mouldy, refine, the defect such as flocculation, particular for the shortcoming that existing model sasnd unit weight is fixing, adopt certain mineral or chemical material, use new technology and new technique, have developed synthetic model sasnd.nullExisting synthetic model sasnd solves the nonadjustable problem of unit weight preferably，There is unit weight adjust、Color tunable、Particle diameter is adjustable、The obvious advantages such as grain shape is close with natural sand，Existing synthetic is husky，Employing plastics are base material，Solve unit weight preferably、Color、Particle diameter is adjustable and grain shape is close to problems such as natural sands，Its kinetic characteristic and Sediment transport characteristics are superior to conventional model sand，But cause that it is relatively costly because plastic raw materials price is higher，And it is subject to the restriction of existing production technology level，It is difficult to obtain the grain diameter fine sand less than below 0.1mm，Its test application is subject to certain restrictions，But the thinking that synthetic is husky，Provide the adjustable solution of model sasnd unit weight，The reason analyzing its cost high is，The main stock of model sasnd adopts chemical plastic，In short supply along with petroleum resources，The cost of raw material still can gradually step up.Therefore seek model sasnd or the base material substitution material of cheap, environmental protection, adopt artificial synthesis, manufacture model sasnd cheap, function admirable, have broad application prospects.

Summary of the invention

The preparation method that the present invention provides wide, the cheap movable bed sediment model test synthesising biological matter model sasnd of a kind of different unit weight, particle size range.This model sasnd forms through explained hereafter such as carbonization, fusion, pulverizing, the base material adopted is the biological materials such as Linesless charcoal, wood powder, rice hull carbon, carbonized wood, adhesive and hargil powder or Pulvis Talci are auxiliary material, by the different ratio of base material and auxiliary material, it is achieved synthetic unit weight 1.1g/cm³～1.5g/cm³Between adjustable, grind and sorting process again through difference, realize obtaining the model sasnd that particle diameter is the different size between 0.08mm～5.0mm, this model sasnd has that unit weight and grain diameter be adjustable, particle size range wide (particularly grain diameter can obtain less than below 0.1mm), grain shape be close to natural sand, stable performance, the advantage such as cheap, outstanding husky model, bed-sit model and complete husky model test use can be suitable for simultaneously, provide new model sasnd to select approach for design of movable model particularly complete husky modelling and test.

The present invention is achieved through the following technical solutions: the preparation method of a kind of movable bed sediment model test synthesising biological matter model sasnd, specifically carries out according to following steps:

Step 1, carries out timber or carbonization wooden, rice husk raw material processes；

Choosing timber or wooden, rice husk biomass material, adopt kiln process or cracking process to obtain biomass carbon, biomass carbon is Linesless charcoal or rice hull carbon, controls kiln temperature at 180 DEG C～800 DEG C in process；

Step 2, the outfit of model sasnd mixed material；

Biomass carbon is ground to 300 orders, according to parts by weight, take the ratio uniform mixing of biomass carbon 30～40 parts, hargil or superfine talcum powder 10～20 parts, 50～70 parts of phenolic resin, form model sasnd mixed material；

Step 3, the fusion of model sasnd mixed material；

By above-mentioned model sasnd mixed material, extruded machine fusion treatment, the temperature of fusion treatment is 180 DEG C～200 DEG C, more than 2 hours retention time, it is thus achieved that synthesis charcoal consolidation base material；

Step 4, pulverizes；

Synthesis charcoal after merging is consolidated cooling after base material takes out, and carries out pulverizing, sorting, it is thus achieved that being suitable for the model sasnd granule of test needs, after pulverizing, the model sasnd particle size range of acquisition is 0.08mm～5.0mm.

The invention has the beneficial effects as follows, the present invention is that a kind of cost is low, riverbed bed ripples is less, the synthesising biological matter charcoal model sasnd that particle size range is wide, its objective is to provide unit weight adjustable for silt movable bed physical model, granule is thinner, stable performance, the model sasnd that cost is low, solve existing conventional model sand and synthetic model sand selects the defect of inadequate resource in sand in movable-bed model test, the utilization of this kind of model sasnd, new resource is provided for design of movable model and test, and it is greatly improved movable-bed model test precision, can be widely used in river, river mouth, water sand basic theories experimentation that seashore is relevant and the model investigation of development and usage.

Detailed description of the invention

Embodiment one

Unit weight is set as 1.20g/cm below with one³The preparation of the synthesis Linesless charcoal model sasnd of left and right is that the present invention is described in detail by example:

Choosing timber is raw material, adopts kiln process to acquire Linesless charcoal, controls kiln temperature at 180 DEG C in process, and Linesless charcoal pick-up rate is 25%～30%；Being ground by Linesless charcoal to 300 orders, obtain model sasnd mixed material according to following weight proportion, its proportioning is: Linesless charcoal: 30 parts, liquid phenolic resin: 50 parts, superfine talcum powder 10 parts；Above-mentioned model sasnd compound adding stirring in blender, mixing, and carries out in baking oven merging consolidation process by putting into after extruded for the material of mix homogeneously machine extrusion, oven temperature controls at 180 degree, and keeps 2 hours；Cooling after mixing cementing material after fusion is taken out, and carry out pulverizing, sorting the model sasnd obtaining movable-bed model test needs, the model sasnd particle size range of the method acquisition is at 0.08mm～5.0mm, and the unit weight of model sasnd is at 1.13g/cm³～1.21g/cm³Between.

Embodiment two

Unit weight is set as 1.25g/cm below with one³The preparation that the synthesis mud wooden mold of left and right is husky is that the present invention is described in detail by example:

Choosing timber is raw material, adopts kiln process to acquire carbonized wood, controls kiln temperature at 300 DEG C in process, and the pick-up rate of carbonized wood is typically in 70～80%；Being ground by carbonized wood to 300 orders, obtain model sasnd mixed material according to following weight proportion, its proportioning is: carbonized wood: 40 parts, hargil powder: 20 parts, liquid phenolic resin: 70 parts；Above-mentioned model sasnd compound adding stirring in blender, mixing, and carries out in baking oven merging consolidation process by putting into after extruded for the material of mix homogeneously machine extrusion, oven temperature controls at 200 degree, and keeps 2 hours；Mixing cementing material after merging being taken out cooling, and carries out pulverizing, sorting the model sasnd obtaining movable-bed model test needs, the model sasnd particle size range that the method obtains is at 0.08mm～5.0mm, and the unit weight of model sasnd is at 1.2g/cm³～1.3g/cm³Between.

Embodiment three

Unit weight is set as 1.30g/cm below with one³The preparation of the synthesis Linesless charcoal model sasnd of left and right is that the present invention is described in detail by example:

Choose rice husk biomass material, adopt cracking process to obtain rice hull carbon, process controls kiln temperature at 800 DEG C；Biomass carbon is ground to 300 orders, according to parts by weight, take the ratio uniform mixing of biomass carbon 35 parts, hargil 15 parts, 60 parts of phenolic resin, form model sasnd mixed material；By above-mentioned model sasnd mixed material, extruded machine fusion treatment, the temperature of fusion treatment is 190 DEG C, more than 2 hours retention time, it is thus achieved that synthesis charcoal consolidation base material；Synthesis charcoal after merging is consolidated cooling after base material takes out, and carries out pulverizing, sorting, it is thus achieved that being suitable for the model sasnd granule of test needs, after pulverizing, the model sasnd particle size range of acquisition is 0.08mm～5.0mm, and the unit weight of model sasnd is at 1.3g/cm³Left and right.

Claims (1)

1. the movable bed sediment model test preparation method of synthesising biological matter model sasnd, it is characterised in that specifically carry out according to following steps:

Step 1, carries out carbonization wooden, rice husk raw material and processes；

Choosing wooden, rice husk biomass material, adopt kiln process or cracking process to obtain biomass carbon, biomass carbon is Linesless charcoal or rice hull carbon, controls kiln temperature at 180 DEG C～800 DEG C in process；

Step 2, the outfit of model sasnd mixed material；

Biomass carbon is ground to 300 orders, according to parts by weight, take the ratio uniform mixing of biomass carbon 30～40 parts, hargil or superfine talcum powder 10～20 parts, 50～70 parts of phenolic resin, form model sasnd mixed material；

Step 3, the fusion of model sasnd mixed material；

By above-mentioned model sasnd mixed material, extruded machine fusion treatment, the temperature of fusion treatment is 180 DEG C～200 DEG C, more than 2 hours retention time, it is thus achieved that synthesis charcoal consolidation base material；

Step 4, pulverizes；

Synthesis charcoal after merging is consolidated cooling after base material takes out, and carries out pulverizing, sorting, it is thus achieved that being suitable for the model sasnd granule of test needs, after pulverizing, the model sasnd particle size range of acquisition is 0.08mm～5.0mm.