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Single-cavity high-pressure pre-drilling shear lateral pressure gauge

A side pressure instrument and pre-drilling technology, which is applied in the field of single-cavity high-pressure pre-drilling shear side pressure instrument, can solve the problem of rubber mold detachment and other problems

Pending Publication Date: 2021-05-14
SOUTHWESTERN ARCHITECTURAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention intends to provide a single-cavity high-pressure pre-drilling shear side pressure instrument to solve the problem that the rubber mold of the existing side pressure instrument probe is prone to detachment

Method used

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  • Single-cavity high-pressure pre-drilling shear lateral pressure gauge
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  • Single-cavity high-pressure pre-drilling shear lateral pressure gauge

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Embodiment Construction

[0023]The present invention will be further detailed below with reference to the drawings and embodiments:

[0024]Reference numerals in the accompanying drawings include: inlet line 1, core rod 2, banding screw 3, double layer metal armor 4, inner bushing 5, rubber film 6, into the through hole 7, ring embossed 8, Fixed nut 9.

[0025]Such asfigure 1 ,figure 2 withimage 3As shown, a single cavity high pressure pre-diamond shear methodometer, including a top rising device, a bypassometer probe, a control system, a pipeline system, a pole press probe including a core rod 2, inner bushing 5, and rubber The film 6, the upper end of the core rod 2 is integrated with a first shaft shoulder and a second bearing, the first shoulder diameter is larger than the second bearing diameter, and the lower end of the core rod 2 is provided with a ring embossed 8, the annular embossed cap 8 The upper diameter is smaller than the diameter of the lower portion, and the inner bushing 5 is arranged outside th...

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Abstract

The invention belongs to the technical field of geological survey, and discloses a single-cavity high-pressure pre-drilling shear lateral pressure gauge. The single-cavity high-pressure pre-drilling shear lateral pressure gauge comprises a jacking device, a lateral pressure gauge probe, a control system and a pipeline system, wherein the lateral pressure gauge probe comprises a core rod, a neck bush and a rubber film; the upper end of the core rod is sequentially provided with a first shaft shoulder and a second shaft shoulder; the lower end of the core rod is provided with an annular pressing cap; the neck bush is sleeved at the outer side of the core rod between the second shaft shoulder and an annular pressing sleeve; pressing rings for pressing the rubber film are arranged at the two ends of the neck bush; a fixing screw nut is arranged at the lower side of the annular pressing cap; the periphery of the core rod is sleeved with a double-layer metal armor; the upper end of the double-layer metal armor is fixedly connected with the first shaft shoulder; the lower end of the double-layer metal armor is attached to the fixing screw nut; the pipeline system comprises a liquid inlet pipeline; the liquid inlet pipeline communicates with a gap between the neck bush and the core rod; and a liquid inlet through hole is formed in the middle part of the neck bush. After high pressure is applied a measuring cavity, the two ends of the rubber film can be prevented from extending outwards in the axial direction, and the rubber film can be prevented from being pierced or cut by rocks in a hard soil layer.

Description

Technical field[0001]The present invention relates to the field of geological surveys, and more particularly to a single cavity high pressure pre-diamond shear bypassometer.Background technique[0002]The bypassure test is one of the in-situ test methods widely used in geotechnical engineering, and frequently used in deep formation surveys. The basic principle is to use the drill rod to form a drilled hole in the test formation, put a cylindrical bypack in the borehole design, and pressurize cause the bypass to expand laterally, depending on the test of the test, the drilling is lateral expansion. Volume-pressure or stress-strain relational curve, according to this, it can be used to estimate the infographic force, measure the strength parameters, deformation parameters, batch bed coefficients, estimation base settlement, and settlement.[0003]In the late 1970s, my country has begun to develop bypass equipment. In the 1980s, China has gradually begun the practice, promotion and enginee...

Claims

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Application Information

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IPC IPC(8): E21B49/00
CPCE21B49/008
Inventor 郑立宁周其健冯世清陈继彬罗益斌沈攀
Owner SOUTHWESTERN ARCHITECTURAL DESIGN INST
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