Test model clay for simulating IV-class surrounding rock and method for preparing same

A technology for test and model soil, which is applied to the field of test model soil for crushed IV surrounding rock and its preparation field, can solve the problems of easy poisoning, time-consuming model drying, unsuitability for weak and broken rock mass, etc. Strong, easy to operate, easy to operate

Inactive Publication Date: 2010-06-16
UNIV OF SHANGHAI FOR SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] But, above-mentioned method has certain limitation, especially is more suitable for relatively higher rock strata of strength, is not suitable for the weak broken rock mass of low strength like IV type country rock; Secondly, the above-mentioned material this material Either contain toxic substances, which are prone to poisoning during model preparation, or the model takes a long time to dry and cannot be reused

Method used

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  • Test model clay for simulating IV-class surrounding rock and method for preparing same
  • Test model clay for simulating IV-class surrounding rock and method for preparing same
  • Test model clay for simulating IV-class surrounding rock and method for preparing same

Examples

Experimental program
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Effect test

Embodiment 1

[0058]Use 120g of barite powder, 20g of gypsum powder and 35g of sand and mix evenly, then add 15g of clean tap water, after stirring again, add 2g of laundry detergent and fully combine it with the mixture. The ratio of laundry detergent to water is 1:7.5 , after fully stirring, and then let stand for 2h. The density of the obtained model soil is 2.1g / cm 3 , the cohesion force is 11.47kPa, and the internal friction angle is 29.82°.

[0059]

Embodiment 2

[0061] Use 120g of barite powder, 20g of gypsum powder and 35g of sand and mix evenly, then add 15g of clean tap water, after stirring again, add 3g of laundry detergent and fully combine it with the mixture. The ratio of laundry detergent to water is 1:5 , after fully stirring, and then let stand for 2h. The density of the obtained model soil is 2.1g / cm 3 , the cohesion force is 11.26kPa, and the internal friction angle is 30.34°.

[0062]

Embodiment 3

[0064] Use 120g of barite powder, 20g of gypsum powder and 35g of sand to mix evenly, then add 15g of clean tap water, and after stirring again, add 4g of laundry detergent and fully combine it with the mixture. The ratio of laundry detergent to water is 1:3.75 , after fully stirring, and then let stand for 2h. The density of the obtained model soil is 2.1g / cm 3 , the cohesion force is 10.53kPa, and the internal friction angle is 31.69°.

[0065]

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Abstract

The invention discloses test model clay for simulating the IV-class surrounding rock and a method for preparing the same. The test model clay for simulating the IV-class surrounding rock comprises the following raw materials by weight portion: 119-122 portions of barite powder, 19-21 portions of gypsum powder, 35-42 portions of sand, 13-16 portions of water and 3-6 portions of laundry detergent. The density and the strength of test model clay for simulating the IV-class surrounding rock can be controlled by adjusting the parameters including the material variety, the material proportion, the material mixing proportion, the sand amount, the laundry detergent proportion and the water proportion. If a proper amount of laundry detergent is added to the model rock material again to adjust the model rock material, the model rock material can be used repeatedly. The clean tap water is used as the water phase, the laundry detergent is used as the oil phase, and the clean tap water and the laundry detergent are safe and non-toxic and can be selectively stirred easily without needing the complex postprocessing.

Description

technical field [0001] The invention relates to a model soil for testing, in particular to a model soil for testing broken Class IV surrounding rocks and a preparation method thereof. Background technique [0002] Due to the complexity of the rock mass itself, the model test is widely used in the study of rock mass mechanics, especially for weak and broken Class IV surrounding rock. Its purpose is to control the properties of the rock mass artificially, so that it can achieve the appropriate ratio between the model rock mass and the prototype rock mass in the desired aspect. In view of the complexity of the test simulation of weak and broken rock mass, scholars from various countries are currently trying to break through this obstacle from various angles. [0003] Artificial rock mass model materials generally refer to mixing powdery solids and water-containing liquids in a certain proportion to obtain similar artificial mixtures with certain strength and gravity requiremen...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B14/36
Inventor 徐前卫朱合华丁文其马险峰马忠政张燕霞金方方马静夏凯成王高荣韩红娟吴丹丹
Owner UNIV OF SHANGHAI FOR SCI & TECH
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