CN110133216A - Measure the experimental provision that sediment consolidation additional stress is buried in mud-rock flow silt - Google Patents

Measure the experimental provision that sediment consolidation additional stress is buried in mud-rock flow silt Download PDF

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Publication number
CN110133216A
CN110133216A CN201910401591.6A CN201910401591A CN110133216A CN 110133216 A CN110133216 A CN 110133216A CN 201910401591 A CN201910401591 A CN 201910401591A CN 110133216 A CN110133216 A CN 110133216A
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support column
attachment beam
mud
rock flow
attachment
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CN110133216B (en
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陈洪凯
王圣娟
刘彬
曲文婷
张金浩
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Zaozhuang University
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Zaozhuang University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028Force sensors associated with force applying means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24Earth materials

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Remote Sensing (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

It becomes silted up the invention discloses a kind of measurement mud-rock flow and buries the experimental provision of sediment consolidation additional stress, the experimental provision includes test flume, support column, more attachment beams, multiple miniature soil pressure cells, multiple miniature planar dynamometers, dynamic strain indicator and communicating pipe;The method have the benefit that: propose a kind of experimental provision for measuring mud-rock flow silt and burying sediment consolidation additional stress, the device can measure the mud-rock flow that mud-rock flow silt is buried in deposit at different depth and consolidate additional stress, scientific basis is provided by the dangerous degree of the disease for the bridge culvert structure that mud-rock flow silt is buried effectively to assess, also provides theoretical foundation for the bearing capacity that rationally section debris flow body surface layer is buried in determining mud-rock flow silt.

Description

Measure the experimental provision that sediment consolidation additional stress is buried in mud-rock flow silt
Technical field
The present invention relates to a kind of silts of mud-rock flow to bury sediment consolidation additional stress measuring technique more particularly to a kind of measurement mud Rock glacier, which becomes silted up, buries the experimental provision of sediment consolidation additional stress.
Background technique
China is located at the total mileage of highway of mud-rock flow district occurred frequently up to 1,500,000 kilometers (by the end of the year 2017), mud-stone flow disaster It takes place frequently;Roadbed washout that mud-rock flow causes, suspending concrete pavement slab, road silt bury, Bridge Pier ground erosion attack etc. is disconnected Road disaster has the characteristics that " put more, wide, the condition of a disaster weight ", only results within 2010 direct economic loss up to 87,000,000,000 yuan, serious shadow Ring transport power performance, transportation safety and flood-fighting rescue work.The disconnected road mitigation technical level of mud-rock flow is improved as early as possible has become state The demand of family's level.It is buried practice have shown that the highway bridge culvert in mud-rock flow district occurred frequently is frequently subjected to mud-rock flow silt, deposition is buried in silt The mud-rock flow additional stress that object generates in dehydration consolidation process easily damages bridge culvert structure, for Scientific evaluation mud-rock flow It becomes silted up and buries the dangerous degree of disease of bridge culvert structure, science is needed to provide mud-rock flow consolidation additional stress size.And in measurement mud-rock flow In terms of sediment consolidation additional stress is buried in silt, effective means there is no both at home and abroad at present.
Summary of the invention
For the problems in background technique, the invention proposes a kind of silts of measurement mud-rock flow to bury sediment consolidation additional stress Experimental provision, innovation be: the experimental provision includes test flume, support column, more attachment beams, multiple miniature soil pressures Box, multiple miniature planar dynamometers, dynamic strain indicator and communicating pipe;
The test trench bottom is provided with mounting hole, and the lower end of the support column is fixed in mounting hole, the axial direction of support column with Test flume plane perpendicular, upper end of support column face height are lower than the upper surface of test flume;The communicating pipe is arranged in the slot of test flume On bottom, the outer end of communicating pipe is connected to the outer wall of test flume, and the inner end of communicating pipe is connected to the lower end of support column inner hole;The company The inner end for connecing beam is fixed on the side wall of support column, the axial direction of attachment beam and support column it is axially vertical, the inner hole of attachment beam with The inner hole of support column is connected to;The miniature soil pressure cell is arranged on the upper side of attachment beam outer end, and miniature planar dynamometer is set It sets on the downside of attachment beam outer end, miniature soil pressure cell and miniature planar dynamometer position are opposite;The dynamic strain indicator It is arranged outside test flume, the miniature soil pressure cell and miniature planar dynamometer are electrically connected with dynamic strain indicator;Miniature soil Pressure cell leads to dynamic with pipe orifice is connected to by attachment beam inner hole, support column inner hole with the electric wire of miniature planar dynamometer Deformeter;
The more attachment beams are divided into multiple attachment beam groups, and each attachment beam group includes 3 attachment beams;In same attachment beam group 3 attachment beams are circumferentially uniformly distributed along support column;Multiple attachment beam groups are along support column axial direction equidistantly distributed;Same attachment beam group In 3 connection beam lengths it is identical;Attachment beam in different attachment beam groups, it is progressively longer by sequence from top to bottom.
The principle of the present invention is: the debris flow body dehydration consolidation process inside from surface layer shows as consolidation cutting edge of a knife or a sword from deposit table Layer is promoted to deposit deep, and crushes consolidation cutting edge of a knife or a sword lower part debris flow body simultaneously generates additional stress, and at different depth It is not identical to consolidate additional stress, since consolidation cutting edge of a knife or a sword debris flow body below is in fluid state or plastic state always, no Miniature soil pressure cell and miniature planar dynamometer can be rest directly upon different depth position, then the present invention using support column and Attachment beam is fixed miniature soil pressure cell and miniature planar dynamometer, supports;
When on-test, first start dynamic strain indicator, then prepared debris flow body is filled in test flume, makes mud-rock flow Body fills up test flume, and then to debris flow body natural consolidation, in debris flow body consolidation process, dynamic strain indicator is to miniature soil pressure The output signal of power box and miniature planar dynamometer carries out continuous acquisition, can finally obtain the pressure in debris flow body consolidation process Power (being measured by miniature soil pressure cell) and additional stress data (being measured by miniature planar dynamometer);It is axially distributed along support column Multiple attachment beam groups can measure the data at different depth position in debris flow body, and attachment beam gradually becomes from top to bottom Length is to influence detection accuracy to avoid sensing device from being vertically overlapped;When it is implemented, the slurry to debris flow body is viscous Degree, solid phase particles gradation, solid phase ratio are adjusted, and the debris flow body of different conditions can be obtained, using apparatus of the present invention to not Debris flow body with state is tested, and the data under the conditions of various debris flow bodies can be obtained.
The method have the benefit that: propose a kind of reality for measuring mud-rock flow silt and burying sediment consolidation additional stress Experiment device, the device can measure the mud-rock flow that mud-rock flow silt is buried in deposit at different depth and consolidate additional stress, be effective Assessment provides scientific basis by the become silted up dangerous degree of disease of the bridge culvert structure buried of mud-rock flow, is also rationally to determine the road mud-rock flow Yu Mai The bearing capacity on section debris flow body surface layer provides theoretical foundation.
Detailed description of the invention
Fig. 1, structural schematic diagram of the invention;
Title corresponding to each label is respectively as follows: test flume 1, support column 2, attachment beam 3, miniature soil pressure cell 4, miniature in figure Plane dynamometer 5, dynamic strain indicator 6, communicating pipe 7.
Specific embodiment
A kind of experimental provision for measuring mud-rock flow silt and burying sediment consolidation additional stress, structure are as follows: the experimental provision Including test flume 1, support column 2, more attachment beams 3, multiple miniature soil pressure cells 4, multiple miniature planar dynamometers 5, dynamically answer Become instrument 6 and communicating pipe 7;
1 bottom of test flume is provided with mounting hole, and the lower end of the support column 2 is fixed in mounting hole, the axial direction of support column 2 With 1 plane perpendicular of test flume, 2 upper surface height of support column is lower than the upper surface of test flume 1;The communicating pipe 7 is arranged in test On the slot bottom of slot 1, the outer end of communicating pipe 7 is connected to the outer wall of test flume 1, the inner end of communicating pipe 7 and the lower end of 2 inner hole of support column Connection;The inner end of the attachment beam 3 is fixed on the side wall of support column 2, and the axial direction of attachment beam 3 is axially vertical with support column 2, The inner hole of attachment beam 3 is connected to the inner hole of support column 2;The upper side of 3 outer end of attachment beam is arranged in the miniature soil pressure cell 4 On, miniature planar dynamometer 5 is arranged on the downside of 3 outer end of attachment beam, miniature soil pressure cell 4 and miniature planar dynamometer 5 Position is opposite;The dynamic strain indicator 6 is arranged outside test flume 1, and the miniature soil pressure cell 4 and miniature planar dynamometer 5 are equal It is electrically connected with dynamic strain indicator 6;The electric wire of miniature soil pressure cell 4 and miniature planar dynamometer 5 by 3 inner hole of attachment beam, 2 inner hole of support column and 7 inner hole of communicating pipe lead to dynamic strain indicator 6;
The more attachment beams 3 divide for multiple attachment beam groups, and each attachment beam group includes 3 attachment beams 3;In same attachment beam group 3 attachment beams 3 be uniformly distributed along support column 2 is circumferential;Multiple attachment beam groups are along the axial equidistantly distributed of support column 2;Same company 33 length of attachment beam for meeting Liang Zuzhong are identical;Attachment beam 3 in different attachment beam groups, is gradually become by sequence from top to bottom It is long.

Claims (1)

1. a kind of experimental provision for measuring mud-rock flow silt and burying sediment consolidation additional stress, it is characterised in that: the experimental provision Including test flume (1), support column (2), more attachment beams (3), multiple miniature soil pressure cells (4), multiple miniature planar dynamometers (5), dynamic strain indicator (6) and communicating pipe (7);
Test flume (1) bottom is provided with mounting hole, and the lower end of the support column (2) is fixed in mounting hole, support column (2) Axial direction and test flume (1) plane perpendicular, support column (2) upper surface height be lower than test flume (1) upper surface;The communicating pipe (7) be arranged on the slot bottom of test flume (1), the outer end of communicating pipe (7) is connected to the outer wall of test flume (1), communicating pipe (7) it is interior End is connected to the lower end of support column (2) inner hole;The inner end of the attachment beam (3) is fixed on the side wall of support column (2), attachment beam (3) axial direction is axially vertical with support column (2), and the inner hole of attachment beam (3) is connected to the inner hole of support column (2);It is described miniature Soil pressure cell (4) is arranged on the upper side of attachment beam (3) outer end, and miniature planar dynamometer (5) is arranged in attachment beam (3) outer end Downside on, miniature soil pressure cell (4) and miniature planar dynamometer (5) position are opposite;Dynamic strain indicator (6) setting exists Outside, the miniature soil pressure cell (4) and miniature planar dynamometer (5) are electrically connected with dynamic strain indicator (6) test flume (1); The electric wire of miniature soil pressure cell (4) and miniature planar dynamometer (5) passes through attachment beam (3) inner hole, support column (2) inner hole and company Siphunculus (7) inner hole leads to dynamic strain indicator (6);
The more attachment beams (3) are divided into multiple attachment beam groups, and each attachment beam group includes 3 attachment beams (3);Same attachment beam 3 attachment beams (3) in group are circumferentially uniformly distributed along support column (2);Axial equidistant point along support column (2) of multiple attachment beam groups Cloth;3 attachment beam (3) length in same attachment beam group are identical;Attachment beam (3) in different attachment beam groups, by from top to bottom Sequence it is progressively longer.
CN201910401591.6A 2019-05-15 2019-05-15 Experimental device for measuring consolidation additional stress of sediment buried in debris flow Active CN110133216B (en)

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