Direct shear tester for field undisturbed soils

A direct shear tester and non-disturbance technology, applied in the field of direct shear tester, can solve the problems of large direct shear tester, inconvenient to carry on-site measurement, unfavorable transportation, etc., and achieve simple structure, low friction and easy to carry Effect

Inactive Publication Date: 2011-02-09
CHONGQING UNIV
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Problems solved by technology

[0003] However, the existing non-disturbed soil direct shear tester has the following disadvantages: ① the existing large direct shear tester is generally only suitable for indoor testing of the mechanical properties of disturbed soil; ② the use of the existing large direct shear tester for vertical and h

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  • Direct shear tester for field undisturbed soils
  • Direct shear tester for field undisturbed soils
  • Direct shear tester for field undisturbed soils

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Embodiment Construction

[0022] figure 1 It is a structural schematic diagram of the present invention, figure 2 It is the front view of the present invention, image 3 for figure 2 right view of the Figure 4 for figure 2 As shown in the figure: the direct shear tester of the non-disturbed soil in the field of the present embodiment comprises a shearing device, a vertical loading device and a horizontal loading device, and the shearing device includes a lower shear box 1 and a sliding fit The upper shear box 2 is arranged on the lower shear box 1, and the vertical loading device includes a loading container I3 for accommodating heavy objects and is fixedly connected with the loading container I3 for undisturbed soil in the upper shear box 2. Vertically loaded force transmission assembly I, the horizontal loading device includes a loading container II4 for accommodating heavy objects and a force transmission assembly II connected to the loading container II4 for horizontally loading the upper s...

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Abstract

The invention discloses a direct shear tester for field undisturbed soils, which comprises a shear device, a vertical loading device and a horizontal loading device, wherein the shear device comprises a lower shear box and an upper shear box arranged on the lower shear box in a sliding fit mode; the vertical loading device comprises a loading container I and a force transmission component I for carrying out vertical loading on soil bodies; and the horizontal loading device comprises a loading container II and a force transmission component II for carrying out horizontal loading on the upper shear box; and when in use, the upper shear box and the lower shear box are sleeved around the tested undisturbed soils, then just enough soils and rocks are arranged around the lower shear box so as to fix the lower shear box, the loading container I and the loading container II are respectively filled with field soils and rocks, and shear strength testing is performed on the field undisturbed soils so as to determine the shear stresses of the undisturbed soils under different vertical pressures, thereby deeply learning the changing rule of some mechanical properties of the undisturbed soils so as to provide a theoretical basis for analyzing the stability of a later-stage waste disposal site and designing the emission scheme of chats.

Description

technical field [0001] The invention relates to a test device for shear strength of non-disturbed soil on site, in particular to a direct shear tester for non-disturbed soil on site such as mine dump or coarse-grained soil. Background technique [0002] Because the undisturbed soil has obvious structure, the structure of undisturbed soil has a more significant influence on its mechanical properties. Therefore, it is necessary to measure the mechanical properties of the undisturbed soil in order to gain an in-depth understanding of some mechanical changes of the undisturbed soil, so as to provide more reliable mechanical parameters for the slope stability of dump sites and waste rock sites. [0003] However, the existing non-disturbed soil direct shear tester has the following disadvantages: ① the existing large direct shear tester is generally only suitable for measuring the mechanical properties of disturbed soil indoors; ② using the existing large direct shear tester for v...

Claims

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Application Information

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IPC IPC(8): G01N3/24
Inventor 王光进杨春和孔祥云顾义磊
Owner CHONGQING UNIV
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