CN1792990A - Iron spar powder, guartz sand cement rock-soil similar material and preparation process thereof - Google Patents

Iron spar powder, guartz sand cement rock-soil similar material and preparation process thereof Download PDF

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CN1792990A
CN1792990A CN 200510104581 CN200510104581A CN1792990A CN 1792990 A CN1792990 A CN 1792990A CN 200510104581 CN200510104581 CN 200510104581 CN 200510104581 A CN200510104581 A CN 200510104581A CN 1792990 A CN1792990 A CN 1792990A
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rosin
iron ore
quartz sand
sand
barium sulfate
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CN100336769C (en
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张强勇
李术才
朱维申
尤春安
郭小红
马国良
陈继光
李勇
王汉鹏
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Shandong University
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Shandong University
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Abstract

The invention relates to a method to produce equivalent material of iron crystal sand cemented rock soil that uses iron ore, barite powder and quartz sand as main aggregate, uses solution that is made up from rosin and alcohol as cementing agent, and uses gesso as regulator. Whisking the iron ore, barite powder and quartz sand, gesso, resin-alcohol solution to equal, pouring into steel mould, pressing the mixture, opening the mould, drying for 2-3 days, the invention could be gained. The invention has the advantages of high unit weight, large range of mechanics parameter, easy to process and low cost.

Description

Iron spar powder, guartz sand cement rock-soil similar material and preparation method thereof
Technical field
The present invention relates to water conservancy, traffic, mine, energy project field, relate in particular to these fields in the rock soil medium physico mechanical characteristic keep similar analog material.
Background technology
Enter the new millennium, along with the sustainable development of national economy and the enforcement of strategy to develop western regions, China has welcome the peak period that large-scale engineering is built, as putting into operation of heavy constructions such as Three Gorges, the south water to north, projects to divert gas and electricity from the western to the eastern regions, Qinghai-Tibet Railway on the one hand to accelerating the Chinese national economy development, uplift the people's living standard and keep social sustainable development to play great promoter action, develop these heavy construction projects simultaneously and will face a large amount of ground excavations, relate to many problems about ground strength failure, deformation instability and consolidation process.To these challenge, to go research by theoretical analysis, digital computer simulation method on the one hand, on the other hand, to solve by ground geomechanical model test means more.Geomechanics model is the reproduction of actual physical entity, under the condition that satisfies similarity principle substantially, can reflect the basic physico mechanical characteristic of rock soil medium truly.
Carry out geomechanical model test, must have to the rock soil medium physico mechanical characteristic to keep similar analog material, the present Research of at present relevant ground analog material is as follows:
" Wuhan Water Conservancy and Electric Power Univ's journal " the 2nd phase in 1997 has been introduced and has a kind ofly mixed the analog material that forms by ground barium sulfate, glued membrane iron powder and rosin spirituous solution, is called for short the MIB material.The distinguishing feature of this material is that its Young's modulus can be adjusted according to film thickness, and its shortcoming is that the neoprene latex as the iron powder tackiness agent contains toluene, and is bigger to the toxic side effect of human body.The introduction of " Guangdong building and building " the 12nd phase in 2002 selects for use cement gypsum as the rock simulation material, by a large amount of cement gypsum shop experiments, the physical and mechanical property of cement gypsum analog material is studied.The characteristics of this type of material be cheap, be easy to processing and fabricating, but model is dry slow, curing time is long, material can not reuse." water power journal " the 1st phase in 2004 has been introduced a kind of NIOS geomechanics model material, and it is made up of magnetite concentrate powder, river sand, binding agent gypsum or cement, mixing water and additive.The characteristics of this material are that unit weight is big, cheap, stable performance, but model is dry slowly, curing time is long, and material can not reuse." engineering geology journal " the 2nd phase in 1994 is selected barite for use when being presented in simulation Xi'an area faulted structural activity, and gypsum, quartz sand, water, the mixture of latex be as basic cast material, glycerine, and citric acid is as the auxiliary material agent.The characteristics of this material are that material is cheap and easy to get, but model is long time of drying, add white glue with vinyl after, easily crack at some position of model and influence characteristic of material mechanics." western mineral exploration engineering " the 12nd phase in 2003 is introduced the geological mining condition according to the mining area, Yanzhou, and adopting river sand, mica is aggregate, and lime carbonate, gypsum are the analog material of cementing matter, study the overlying strata destructive characteristics that the big band longwall top coal caving causes.For table soil and coal, because unit weight is little, add an amount of sawdust to reduce the unit weight of analog material, this material only is fit to the geotechnical engineering characteristic of simulation this area and does not possess ubiquity.
The ubiquitous deficiency of above-mentioned ground analog material is: analog material unit weight is low, time of drying slow, the mechanics parameter variation range is narrow, material can not be reused.
Summary of the invention
Geomechanical model test is a kind of method of specific engineering geological problems being carried out reduced scale research according to certain similarity principle, and wherein the selection of cast material plays crucial effects to the success or not of geomechanical model test.In the geotechnical engineering geomechanical model test, analog material as simulation rock-soil mechanics characteristic must possess basic characteristics such as high unit weight, low strength, low modulus of deformation and transformable internal friction angle, and the material that satisfies these requirements is non-existent at nature, must make up with manual method to obtain.According to our years of researches experience,, generally follow the following fundamental principle to the development of analog material:
(1) analog material should be made up of bulk solid.Building block glued through jointing compound and suppress into certain size in mould could guarantee fine and close structure and bigger internal friction angle.(2) bulk solid should be selected the material of big proportion for use, and presses optimum gradation composition by thick, fine particle, to obtain maximum unit weight and less porosity.(3) jointing compound of the weak cementing properties of employing is to reduce the intensity of formed material.(4) molded material should have higher electric insulation degree, and the influence that not changed by temperature and humidity, and the mechanical property of material is more stable in the simulation process.(5) should adopt starting material cheap and easy to get, to reduce material cost of manufacture and model trial funds.(6) the material manufacture craft strives for simplification, and energy rapid drying after the moulding is to accelerate the model trial process.(7) but the mechanics parameter of analog material has bigger variation range, to adapt to the needs of simulation DIFFERENT SOIL medium.(8) human body there is not any toxic action.
Above-mentioned oranon according to analog material, we are through the mechanics of materials parameter testing of more than 200 groups, nearly more than 600 test specimens, developed a kind of novel ground analog material, it is that ((Rosin and Alcohol) solution mixes according to certain proportioning and evenly stirs a kind of matrix material that forms, and is called iron spar powder, guartz sand cement rock-soil similar material by powdered iron ore (Iron ore powder), ground barium sulfate (Blancfix powder), quartz sand (Sand), terra alba (Gypsum powder), rosin alcohol.Mechanics of materials parameter testing shows, this material has that unit weight height, mechanics parameter variation range are wide, stable performance, cheap, manufacture craft is simple and reusable remarkable advantage.
The technical scheme of iron spar powder, guartz sand cement rock-soil similar material of the present invention is: selecting powdered iron ore, ground barium sulfate, quartz sand, terra alba, one-level rosin and purity is that 99.9% industrial spirit is made starting material, wherein, powdered iron ore, ground barium sulfate and quartz sand are as main aggregate, the solution of rosin and alcohol preparation is as jointing compound, and terra alba is as conditioning agent.Because powdered iron ore, ground barium sulfate are too thin,, in material, add quartz sand and make coarse aggregate in order to optimize grating and to regulate the mechanical characteristic of material.
The material mixture ratio that preferably obtains constitutes: the weight proportion of powdered iron ore, ground barium sulfate and quartz sand is: 1: 0.67～1.5: 0.17～0.37, terra alba is as conditioning agent, its weight is 0～4% of material gross weight, the rosin spirituous solution is as jointing compound, and its volumetric molar concentration is 5～25%, weight is 3%～6% of material gross weight.
The manufacture craft process of iron spar powder, guartz sand cement rock-soil similar material of the present invention is: earlier the proportioning weighing and pouring in the stirrer according to the rules of powdered iron ore, ground barium sulfate, quartz sand and terra alba is stirred, adding the rosin spirituous solution then further mixes and stirs, with the compound that mixes and stirs, pour in the steel die, and under pressing machine with the pressure about 1.5～2.0MPa with the compound compacting, at last mould is taken, is taken out apart the test specimen of compression moulding, show labelledly at test specimen, placed dry 2～3 days at normal temperatures.
The first weighing amount of dried material test specimen, measured altitude calculate unit weight γ.The mechanics parameter of test material test specimen on trier mainly comprises elastic modulus E, Poisson's ratio μ, ultimate compression strength σ subsequently c, tensile strength sigma t, internalfrictionangle and cohesion C.
Mechanics of materials parameter testing is carried out on electronic universal tester and triaxial shear equipment, through nearly more than 200 groups, the mechanics parameter test of more than 600 material test specimen altogether, develops iron spar powder, guartz sand cement rock-soil similar material.
The Main physical mechanics parameter of iron spar powder, guartz sand cement rock-soil similar material
(1) Main physical mechanics parameter
The main shear strength parameter of material that table 1 records for different proportionings, the material Main physical mechanics parameter that table 2 records for different proportionings.
The main shear strength parameter of material that the different proportionings of table 1 record
Sequence number Material mixture ratio Quartzy Grains number (order) Cohesive force (KPa) Internal friction angle (°)
Powdered iron ore: ground barium sulfate: quartz sand Gypsum accounts for the per-cent of material gross weight Rosin spirituous solution volumetric molar concentration The rosin spirituous solution accounts for the per-cent of material gross weight
1 1∶0.67∶0.20 2.5％ 7.5％ 5.0％ 20～40 102.0 37.6
2 1∶0.67∶0.25 2.5％ 7.5％ 5.0％ 20～40 103.8 40.1
3 1∶0.67∶0.30 2.5％ 7.5％ 5.0％ 20～40 106.6 42.5
4 1∶0.67∶0.35 2.5％ 7.5％ 5.0％ 20～40 108.7 36.5
5 1∶0.67∶0.30 2.5％ 5.0％ 5.0％ 20～40 47.8 40.5
6 1∶0.67∶0.30 2.5％ 6.0％ 5.0％ 20～40 98.3 36.0
7 1∶0.67∶0.30 2.5％ 9.0％ 5.0％ 20～40 156.7 37.4
8 1∶0.67∶0.30 2.5％ 10.0％ 5.0％ 20～40 117.5 35.6
9 1∶0.67∶0.30 2.5％ 12.5％ 5.0％ 20～40 167.5 39.9
10 1∶0.67∶0.30 2.5％ 15.0％ 5.0％ 20～40 301.8 37.1
11 1∶0.67∶0.30 2.5％ 7.5％ 5.0％ 5～10 33.3 43.3
12 1∶0.67∶0.30 2.5％ 7.5％ 5.0％ 50～60 87.8 39.5
The material Main physical mechanics parameter that the different proportionings of table 2 record
Sequence number Material mixture ratio Unit weight (KN/m3) Ultimate compression strength (MPa) Play mould (MPa) Tensile strength (MPa)
Powdered iron ore: ground barium sulfate: quartz sand Gypsum accounts for the per-cent of material gross weight Rosin spirituous solution volumetric molar concentration The rosin spirituous solution accounts for the per-cent of material gross weight
1 1∶1∶0.22 3.0％ 17.5％ 5.0％ 2.88 0.380 31.81 0.04
2 1∶1∶0.22 3.5％ 17.5％ 5.0％ 2.74 0.412 44.89 0.04
3 1∶1.5∶0.28 3.0％ 17.5％ 5.0％ 2.68 0.331 45.04 0.03
4 1∶1∶0.22 4.0％ 17.5％ 5.0％ 2.71 0.309 48.08 0.03
5 1∶1∶0.22 2.0％ 17.5％ 5.0％ 2.72 0.479 57.91 0.05
6 1∶0.67∶0.29 2.5％ 6.0％ 5.0％ 2.52 0.29 60.00 0.03
7 1∶0.67∶0.28 4.0％ 6.0％ 5.0％ 2.53 0.22 60.00 0.02
8 1∶1.5∶0.28 2.5％ 17.5％ 5.0％ 2.70 0.774 68.65 0.08
9 1∶0.67∶0.19 2.5％ 6.0％ 5.0％ 2.50 0.38 70.00 0.04
10 1∶1.5∶0.28 3.5％ 17.5％ 5.0％ 2.72 0.778 74.22 0.08
11 1∶0.67∶0.19 2.5％ 6.0％ 5.0％ 2.63 0.49 80.00 0.05
12 1∶0.54∶0.17 2.5％ 6.0％ 5.0％ 2.57 0.38 80.00 0.04
13 1∶1∶0.35 3.5％ 6.0％ 5.0％ 2.53 0.39 82.00 0.04
14 1∶1.5∶0.28 2.5％ 17.5％ 5.0％ 2.72 0.742 87.09 0.07
15 1∶0.67∶0.29 3.5％ 6.0％ 5.0％ 2.66 0.30 90.00 0.03
16 1∶0.67∶0.19 2.5％ 7.5％ 5.0％ 2.42 0.48 90.00 0.05
17 1∶0.67∶0.29 2.5％ 7.5％ 5.0％ 2.53 0.42 90.00 0.04
18 1∶1∶0.35 2.5％ 6.0％ 5.0％ 2.53 0.30 90.00 0.03
19 1∶1∶0.35 3.5％ 7.5％ 5.0％ 2.55 0.40 90.00 0.04
20 1∶0.67∶0.19 2.5％ 8.0％ 5.0％ 2.64 0.79 90.00 0.08
21 1∶0.54∶0.17 2.5％ 8.0％ 5.0％ 2.58 0.54 90.00 0.05
22 1∶1.5∶0.28 2.0％ 17.5％ 5.0％ 2.73 0.652 92.65 0.07
23 1∶1.5∶0.28 3.5％ 17.5％ 5.0％ 2.67 0.621 93.98 0.06
24 1∶1.5∶0.28 3.5％ 17.5％ 5.0％ 2.71 0.900 94.63 0.09
The material Main physical mechanics parameter that the continuous different proportionings of table 2 record
25 1∶0.67∶0.29 0.0％ 8.0％ 5.0％ 2.52 0.62 100.00 0.06
26 1∶0.67∶0.19 2.5％ 8.0％ 5.0％ 2.50 0.49 100.00 0.05
27 1∶0.67∶0.19 2.5％ 10.0％ 5.0％ 2.54 0.80 100.00 0.08
28 1∶0.67∶0.29 2.5％ 8.0％ 5.0％ 2.49 0.66 100.00 0.07
29 1∶0.67∶0.19 0.0％ 6.0％ 5.0％ 2.52 0.55 100.00 0.06
30 1∶0.67∶0.19 0.0％ 7.5％ 5.0％ 2.57 0.53 100.00 0.05
31 1∶0.67∶0.29 0.0％ 6.0％ 5.0％ 2.57 0.45 100.00 0.04
32 1∶1∶0.35 2.5％ 8.0％ 5.0％ 2.62 0.52 100.00 0.05
33 1∶1∶0.35 3.5％ 7.5％ 5.0％ 2.54 0.65 100.00 0.06
34 1∶0.67∶0.30 2.5％ 7.5％ 5.0％ 2.75 0.48 102.00 0.05
35 1∶0.67∶0.29 0.0％ 10.0％ 5.0％ 2.59 0.98 110.00 0.10
36 1∶1∶0.35 2.5％ 6.0％ 5.0％ 2.56 0.46 110.00 0.05
37 1∶1∶0.35 2.5％ 6.0％ 5.0％ 2.57 0.73 110.00 0.07
38 1∶1∶0.35 3.5％ 6.0％ 5.0％ 2.53 0.69 110.00 0.07
39 1∶0.54∶0.17 2.5％ 7.5％ 5.0％ 2.58 0.53 110.00 0.05
40 1∶0.67∶0.19 2.5％ 7.5％ 5.0％ 2.46 0.43 120.00 0.04
41 1∶0.67∶0.29 2.5％ 7.5％ 5.0％ 2.51 0.46 120.00 0.05
42 1∶0.67∶0.19 0.0％ 10.0％ 5.0％ 2.58 1.02 120.00 0.10
43 1∶0.67∶0.29 0.0％ 7.5％ 5.0％ 2.57 0.58 120.00 0.06
44 1∶0.67∶0.29 0.0％ 8.0％ 5.0％ 2.55 0.63 120.00 0.06
45 1∶0.67∶0.19 0.0％ 8.0％ 5.0％ 2.53 0.58 130.00 0.06
46 1∶1.5∶0.28 2.0％ 25.0％ 5.0％ 2.70 1.031 138.60 0.10
47 1∶0.67∶0.29 0.0％ 6.0％ 5.0％ 2.55 0.53 140.00 0.05
48 1∶0.67∶0.29 0.0％ 7.5％ 5.0％ 2.56 0.77 140.00 0.08
49 1∶1∶0.22 2.5％ 10.0％ 5.0％ 2.64 0.62 150.00 006
50 1∶0.67∶0.19 0.0％ 6.0％ 5.0％ 2.60 0.45 150.00 0.04
51 1∶0.67∶0.19 0.0％ 7.5％ 5.0％ 2.60 0.56 150.00 0.06
The material Main physical mechanics parameter that the continuous different proportionings of table 2 record
52 1∶0.67∶0.19 0.0％ 8.0％ 5.0％ 2.55 0.64 150.00 0.06
53 1∶1∶0.35 3.5％ 8.0％ 5.0％ 2.68 1.06 150.00 0.11
54 1∶1.5∶0.28 2.0％ 25.0％ 5.0％ 2.68 1.005 152.68 0.10
55 1∶1.5∶0.28 2.5％ 25.0％ 5.0％ 2.67 1.000 158.98 0.10
56 1∶0.67∶0.29 2.5％ 6.0％ 5.0％ 2.54 0.45 160.00 0.04
57 1∶0.67∶0.29 2.5％ 10.0％ 5.0％ 2.52 0.92 160.00 0.09
58 1∶1∶0.35 2.5％ 7.5％ 5.0％ 2.56 0.64 160.00 0.06
59 1∶1.5∶0.28 2.0％ 25.0％ 5.0％ 2.70 4.41 167.06 0.44
60 1∶0.67∶0.29 2.5％ 8.0％ 5.0％ 2.49 0.65 170.00 0.06
61 1∶1.5∶0.28 3.5％ 17.5％ 6.0％ 2.68 0.750 171.68 0.08
62 1∶1.5∶0.28 2.5％ 17.5％ 6.0％ 2.67 0.948 174.88 0.09
63 1∶1∶0.22 2.5％ 17.5％ 5.0％ 2.81 0.629 174.95 0.06
64 1∶1.5∶0.28 3.5％ 17.5％ 6.0％ 2.67 0.890 192.99 0.09
65 1∶1∶0.35 2.5％ 10.0％ 5.0％ 2.58 0.88 194.45 0.09
66 1∶1.5∶0.28 2.5％ 25.0％ 5.0％ 2.69 1.113 194.90 0.11
67 1∶0.43∶0.25 3.0％ 17.5％ 5.0％ 2.70 0.96 201.38 0.10
68 1∶1.5∶0.28 3.0％ 25.0％ 5.0％ 2.67 0.911 203.82 0.09
69 1∶2.33∶0.37 3.5％ 17.5％ 5.0％ 2.61 1.093 206.68 0.11
70 1∶0.67∶0.29 3.5％ 6.0％ 5.0％ 2.68 0.59 210.00 0.06
71 1∶0.67∶0.19 2.5％ 8.0％ 5.0％ 2.51 0.61 210.00 0.06
72 1∶1.5∶0.28 2.5％ 17.5％ 6.0％ 2.71 0.914 221.66 0.09
73 1∶2.33∶0.37 2.5％ 17.5％ 5.0％ 2.67 0.958 225.22 0.10
74 1∶1.5∶0.28 3.0％ 25.0％ 5.0％ 2.70 1.148 225.48 0.11
75 1∶0.43∶0.25 3.0％ 25.0％ 4.0％ 2.75 1.48 249.30 0.15
76 1∶0.67∶0.19 0.0％ 10.0％ 5.0％ 2.56 0.93 250.00 0.09
77 1∶0.67∶0.19 2.5％ 10.0％ 5.0％ 2.53 0.73 260.00 0.07
78 1∶2.33∶0.37 3.0％ 17.5％ 5.0％ 2.59 1.022 272.54 0.10
The material Main physical mechanics parameter that the continuous different proportionings of table 2 record
79 1∶0.67∶0.29 2.5％ 10.0％ 5.0％ 2.51 0.90 280.00 0.09
80 1∶2.33∶0.37 3.0％ 17.5％ 5.0％ 2.62 1.181 286.24 0.12
81 1∶2.33∶0.37 3.5％ 17.5％ 5.0％ 2.58 1.037 306.16 0.10
82 1∶2.33∶0.37 2.5％ 17.5％ 5.0％ 2.65 0.968 342.44 0.10
83 1∶0.67∶0.29 0.0％ 10.0％ 5.0％ 2.69 1.27 355.00 0.13
84 1∶0.67∶0.29 3.0％ 17.5％ 5.0％ 2.71 1.32 367.93 0.13
85 1∶0.67∶0.29 2.5％ 17.5％ 5.0％ 2.77 1.61 401.50 0.16
86 1∶0.43∶0.25 2.5％ 17.5％ 5.0％ 2.73 1.49 426.42 0.15
87 1∶0.67∶0.29 3.0％ 25.0％ 4.0％ 2.93 1.89 449.43 0.19
88 1∶0.43∶0.25 3.0％ 25.0％ 4.0％ 2.77 1.94 480.76 0.19
89 1∶1∶0.35 2.5％ 17.5％ 5.0％ 2.66 1.87 520.00 0.19
90 1∶1∶0.35 0.0％ 25.0％ 5.0％ 2.72 2.66 543.37 0.27
91 1∶0.67∶0.25 3.5％ 25.0％ 5.0％ 2.72 2.94 578.98 0.29
92 1∶1∶0.35 0.0％ 25.0％ 5.0％ 2.72 3.06 672.62 0.31
93 1∶0.67∶0.29 2.5％ 25.0％ 5.0％ 2.80 3.25 681.84 0.32
94 1∶0.43∶0.25 0.0％ 25.0％ 5.0％ 2.86 3.40 730.00 0.34
95 1∶1∶0.35 3.5％ 25.0％ 5.0％ 2.65 2.77 795.30 0.28
96 1∶0.67∶0.29 2.5％ 25.0％ 5.0％ 2.74 2.54 796.18 0.25
97 1∶1∶0.35 2.5％ 25.0％ 5.0％ 2.76 3.15 810.00 0.32
98 1∶1∶0.35 3.0％ 25.0％ 4.0％ 2.68 2.24 843.97 0.22
99 1∶0∶0.18 0.0％ 25.0％ 5.0％ 2.76 3.17 856.57 0.32
100 1∶0∶0.18 0.0％ 25.0％ 5.0％ 2.88 3.61 883.24 0.36
101 1∶0.11∶0.21 0.0％ 25.0％ 5.0％ 2.79 3.71 900.00 0.37
102 1∶0.43∶0.25 2.5％ 25.0％ 5.0％ 2.85 4.21 921.71 0.42
103 1∶0.25∶0.22 0.0％ 25.0％ 5.0％ 2.81 3.35 930.00 0.33
104 1∶1∶0.35 3.5％ 25.0％ 5.0％ 2.64 2.94 930.00 0.29
105 1∶1∶0.35 2.5％ 25.0％ 5.0％ 2.72 3.54 994.99 0.35
The material Main physical mechanics parameter that the continuous different proportionings of table 2 record
106 1∶0.67∶0.29 0.0％ 25.0％ 5.0％ 2.72 3.58 1050.00 0.36
107 1∶0.43∶0.25 0.0％ 25.0％ 5.0％ 2.87 4.45 1066.96 0.45
108 1∶1∶0.35 3.5％ 25.0％ 5.0％ 2.67 2.88 1067.62 0.29
109 1∶0.25∶0.22 0.0％ 25.0％ 5.0％ 2.80 3.29 1119.66 0.33
110 1∶1.5∶0.28 2.5％ 25.0％ 5.0％ 2.68 5.37 1424.39 0.54
111 1∶0.11∶0.21 0.0％ 25.0％ 5.0％ 2.90 4.82 1458.34 0.48
Adopt powdered iron ore, ground barium sulfate and quartz sand as major ingredient, the rosin spirituous solution is as jointing compound, gypsum is developed into a kind of iron spar powder, guartz sand cement rock-soil similar material as conditioning agent, and mechanics of materials parameter testing shows: this material unit weight variation range is 24～29KN/m 3, the elastic modulus change scope is that 30～1400MPa, ultimate compression strength variation range are that 0.2～5.0MPa, cohesive force variation range are that 20～550Kpa, internal friction angle variation range are 30～50 °.The physical and mechanical parameter variation range of material is wider, can be used to the bigger ground prototype material of analog force mathematic(al) parameter variation range, and this material of evidence has following significant advantage.
(1) mechanics of materials parameter variation range is wider, can use commaterial, as long as adjust the wherein proportioning of each integral part, can adapt to the similar requirement of different sorts rock soil medium, has simplified the difficulty of model investigation work greatly.
(2) material non-corrosive has very high insulativity, and is not subjected to the influence of temperature and humidity, can be on model block paster and need not take other sfgd.s.
(3) employed main raw material is market or factory's standardized product, and is cheap and easy to get, significant to reducing the model trial cost.
(4) after simple, the block forming demoulding of material manufacture craft, can whole dryings come into operation, and shortened the Modelling cycle greatly at room temperature three days.
(5) material can not damage human body without any toxic side effect.
(6) the material building block of compression moulding is easy to cutting, therefore is convenient to the processing and fabricating of different shape model.And the building block seam can be carried out bonding with material own, and puzzle joint does not influence the model overall performance.
(7) the Material Physics mechanical characteristic is stable, can be repeatedly used, and has improved the utilization ratio and the work-ing life of material greatly.
Iron spar powder, guartz sand cement rock-soil similar material is a kind of ideal ground analog material, can be widely used in the geotechnical engineering geomechanical model test research in fields such as the energy, traffic, water conservancy, mine, has a extensive future remarkable in economical benefits.
Description of drawings
Fig. 1 is the typical stress strain curve of material, wherein σ is a stress, and ε is strain;
Fig. 2 is a material mole strength envelope curve, and wherein σ is a normal stress, and τ is a shearing stress;
Fig. 3 is the influence curve of the volumetric molar concentration of rosin spirituous solution to material ultimate compression strength, and wherein β is the volumetric molar concentration of rosin spirituous solution, σ cBe material ultimate compression strength.Know by Fig. 3: adjust the volumetric molar concentration of rosin spirituous solution, the ultimate compression strength that can regulate material, the volumetric molar concentration of rosin spirituous solution is high more, and the ultimate compression strength of analog material is just big more;
Fig. 4 is the influence curve of the volumetric molar concentration of rosin spirituous solution to elasticity modulus of materials, and wherein β is the volumetric molar concentration of rosin spirituous solution, and E is an elasticity modulus of materials.Known by Fig. 4: adjust the volumetric molar concentration of rosin spirituous solution, can regulate the Young's modulus of material, the volumetric molar concentration of rosin spirituous solution is high more, and the Young's modulus of analog material is just big more;
Fig. 5 is the influence curve of powdered iron ore content to material unit weight, and wherein I is the per-cent that powdered iron ore accounts for the material gross weight, and γ is the unit weight of material.Known by Fig. 5: powdered iron ore has considerable influence to material unit weight, and along with the increase of powdered iron ore content, the unit weight of analog material also increases thereupon, and the unit weight maximum of material can reach 29KN/m 3
Fig. 6 is the influence curve of powdered iron ore content to elasticity modulus of materials, and wherein I is the per-cent that powdered iron ore accounts for the material gross weight, and E is the Young's modulus of material.Known by Fig. 6: powdered iron ore and ground barium sulfate are when certain proportioning, and the elasticity modulus of materials maximum can be near 1400MPa.
Fig. 7 is the volumetric molar concentration of rosin spirituous solution and the relation curve of material unit weight, and wherein β is the volumetric molar concentration of rosin spirituous solution, and γ is the unit weight of material.Known by Fig. 7: rosin spirituous solution volumetric molar concentration is less to the unit weight influence of material.
Fig. 8 is the influence curve of rosin spirituous solution volumetric molar concentration to the material cohesive force, and wherein β is the volumetric molar concentration of rosin spirituous solution, and C is the material cohesive force.Known by Fig. 8: the material cohesive force increases with the increase of rosin spirituous solution volumetric molar concentration.
Fig. 9 is the influence curve of quartz sand content to the material cohesive force.Wherein S is the per-cent that quartz sand accounts for the material gross weight, and C is the material cohesive force.Know by Fig. 9: when quartz sand content be no more than the material gross weight 20% the time, the material cohesive force increases with the increase of quartz sand.
Figure 10 is the influence curve of quartzy Grains number to the material cohesive force, and wherein M is quartzy Grains number, and C is the material cohesive force.Known by Figure 10: quartzy Grains number big more (being that quartz sand particle is thin more), the cohesive force of analog material is big more.
Figure 11 is the influence curve of quartzy Grains number to the material internal friction angle, and wherein M is quartzy Grains number, and φ is the material internal friction angle.Known by Figure 11: quartzy Grains number big more (being that quartz sand particle is thin more), the sliding angle of analog material is more little.
Embodiment
The following example is to further specify of the present invention, but the invention is not restricted to this.
Embodiment 1 is in powdered iron ore, ground barium sulfate, the weight proportion of quartz sand is 1: 0.67: 0.30, terra alba accounts for material gross weight 2.5%, the volumetric molar concentration of rosin spirituous solution is 7.5%, the rosin spirituous solution accounts under the material gross weight 5% this material mixture ratio state, according to material mixture ratio and the concentration determined, earlier powdered iron ore, ground barium sulfate, quartz sand and terra alba weighing and pouring in the stirrer stirs, adding the rosin spirituous solution then further mixes and stirs, with the compound that mixes and stirs, pour in the steel die, and under pressing machine with the pressure of 2.0MPa with the compound compacting, at last mould is taken apart, take out the test specimen of compression moulding, placed dry 2～3 days at normal temperatures.The last mechanics parameter of testing dry back material test specimen on trier, the mechanics of materials parameter of the corresponding proportioning that test obtains is: material unit weight is 27.5KN/m 2, ultimate compression strength is that 0.48MPa, tensile strength are that 0.05MPa, Young's modulus are that 102MPa, cohesive force are that 106.6KPa, internal friction angle are 42.5 °.The material of this proportioning can be used to simulate the rock mass medium of medium tenacity.
Embodiment 2 is in powdered iron ore, ground barium sulfate, the weight proportion of quartz sand is 1: 1: 0.22, terra alba accounts for material gross weight 4.0%, the volumetric molar concentration of rosin spirituous solution is 17.5%, the rosin spirituous solution accounts under the material gross weight 5% this material mixture ratio state, according to material mixture ratio and the concentration determined, earlier powdered iron ore, ground barium sulfate, quartz sand and terra alba weighing and pouring in the stirrer stirs, adding the rosin spirituous solution then further mixes and stirs, with the compound that mixes and stirs, pour in the steel die, and under pressing machine with the pressure of 2.0MPa with the compound compacting, at last mould is taken apart, take out the test specimen of compression moulding, placed dry 2～3 days at normal temperatures.The last mechanics parameter of testing dry back material test specimen on trier, the mechanics of materials parameter that test obtains corresponding proportioning is: material unit weight is 27.1KN/m 2, ultimate compression strength is that 0.309MPa, tensile strength are that 0.03MPa, Young's modulus are 48.1MPa.The material of this proportioning can be used to the softer rock mass medium of analog intensity.
Embodiment 3 is in powdered iron ore, ground barium sulfate, the weight proportion of quartz sand is 1: 0.43: 0.25, terra alba accounts for material gross weight 3.0%, the volumetric molar concentration of rosin spirituous solution is 25.0%, the rosin spirituous solution accounts under the material gross weight 4% this material mixture ratio state, according to material mixture ratio and the concentration determined, earlier powdered iron ore, ground barium sulfate, quartz sand and terra alba weighing and pouring in the stirrer stirs, adding the rosin spirituous solution then further mixes and stirs, with the compound that mixes and stirs, pour in the steel die, and under pressing machine with the pressure of 2.0MPa with the compound compacting, at last mould is taken apart, take out the test specimen of compression moulding, placed dry 2～3 days at normal temperatures.The last mechanics parameter of testing dry back material test specimen on trier, the mechanics of materials parameter that test obtains corresponding proportioning is: material unit weight is 27.7KN/m 2, ultimate compression strength is that 1.94MPa, tensile strength are that 0.19MPa, Young's modulus are 480.8MPa.The material of this proportioning can be used to the higher rock mass medium of analog intensity.

Claims (5)

1. iron spar powder, guartz sand cement rock-soil similar material, it is to uniformly mix a kind of matrix material that forms by powdered iron ore (Iron ore powder), ground barium sulfate (Blanc fixpowder), quartz sand (Sand), terra alba (Gypsum powder), rosin alcohol (Rosin and Alcohol) solution proportioning according to the rules.
2. iron spar powder, guartz sand cement rock-soil similar material as claimed in claim 1, it is characterized in that: powdered iron ore, ground barium sulfate, quartz sand, terra alba, rosin and industrial spirit are made starting material, wherein, powdered iron ore, ground barium sulfate and quartz sand are as main aggregate, the solution of rosin and alcohol preparation is as jointing compound, and terra alba is as conditioning agent.
3. iron spar powder, guartz sand cement rock-soil similar material as claimed in claim 1, it is characterized in that: the weight proportion of powdered iron ore, ground barium sulfate and quartz sand is: 1: 0.67～1.5: 0.17～0.37, terra alba is as conditioning agent, its weight is 0～4% of material gross weight, the rosin spirituous solution is as jointing compound, its volumetric molar concentration is 5～25%, and its weight is 3%～6% of material gross weight.
4. as the manufacture craft of each described iron spar powder, guartz sand cement rock-soil similar material of claim 1-3, it is characterized in that: earlier powdered iron ore, ground barium sulfate, the proportioning weighing and pouring in the stirrer according to the rules of quartz sand and terra alba stirs, adding the rosin spirituous solution then further mixes and stirs, with the compound that mixes and stirs, pour in the steel die, and under pressing machine with the pressure about 1.5～2.0MPa with the compound compacting, at last mould is taken apart, take out the test specimen of compression moulding, labelled on the test specimen surface, placing at normal temperatures, drying got final product in 2～3 days.
5. iron spar powder, guartz sand cement rock-soil similar material as claimed in claim 1 is characterized in that: unit weight height, mechanics parameter variation range are wide, stable performance, cheap, manufacture craft is simple and reusable; This material can be widely used in the geotechnical engineering geomechanical model test research in fields such as the energy, traffic, water conservancy, mine.
CNB2005101045814A 2005-11-23 2005-11-23 Iron spar powder, guartz sand cement rock-soil similar material and preparation process thereof Expired - Fee Related CN100336769C (en)

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