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Method for quickly grading terrene surrounding rock in real time on basis of while-drilling parameters

A soil surrounding rock and parameter technology, which is applied in the field of rapid real-time classification of soil surrounding rock based on parameters while drilling, can solve problems such as long time period, traffic influence, distortion, etc., and achieve the effect of improving accuracy and avoiding disturbance

Active Publication Date: 2016-11-23
SHANDONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] (1) For the classification of clayey soil surrounding rock, the liquid index I is measured in the laboratory L , samples need to be taken from the field and transported to the laboratory, the soil will inevitably be disturbed, so that the measured liquid index I L There are different degrees of distortion, and the time period is long and the efficiency is low
[0004] (2) The standard penetration test and dynamic penetration test required for the classification of sandy soil surrounding rock and gravel soil surrounding rock can only be carried out on the ground, and a drilling rig must be used to drill to the test level first. Then carry out the standard penetration test or the dynamic penetrating test, it is impossible to test the soil surrounding rock in front of the face, resulting in too much unnecessary labor and high test cost
[0005] (3) Standard penetration test and dynamic penetration test, the test sections are generally far apart, and the classification is not accurate. During the construction of the subway tunnel, the test on the ground will also affect the traffic

Method used

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  • Method for quickly grading terrene surrounding rock in real time on basis of while-drilling parameters

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Embodiment Construction

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0047] A method for rapid real-time classification of soil surrounding rocks based on parameters while drilling. On-site drilling tests are carried out. Through the parameters measured while drilling during the drilling process, the fluid content of the clay surrounding rocks in front of the face is obtained through tests. Sex Index I L , Standard penetration hammering number N of sandy soil surrounding rock, dynamic penetrating hammering number N of gravel soil surrounding rock 63.5 , and then establish parameters while drilling and clayey soil fluidity index I L , sandy soil standard penetration hammering number N and gravel soil dynamic penetrating hammering number N 63.5 In the actual underground engineering, the soil type of the soil tunnel is judged first, the drilling d...

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Abstract

The invention discloses a method for quickly grading terrene surrounding rock in real time on the basis of while-drilling parameters. The relational expression between a clay soil liquidity index and the while-drilling parameters, the relational expression between the sandy soil standard penetration hammering number and the while-drilling parameters and the relational expression between the gravel soil dynamic sounding hammering number and while-drilling parameters can be established, in actual underground engineering, the soil variety of a terrene tunnel is firstly judged, drilling detection is conducted, the obtained while-drilling parameters are substituted into the relational expressions to obtain the liquidity index I<L> of clay soil surrounding rock, the standard penetration hammering number N of sandy soil surrounding rock and the dynamic sounding hammering number N<63.5> of gravel soil surrounding rock, and then quick and real-time grading is conducted on the surrounding rock in front of a tunnel face according to the Guidelines for Design of Highway Tunnel. According to the method for quickly grading the terrene surrounding rock in real time on the basis of the while-drilling parameters, only drilling testing needs to be conducted on the surrounding rock through a drilling machine at an engineering site, other tedious indoor tests or site tests are not needed, quick and real-time grading is conducted on the terrene surrounding rock, the grading efficiency is high, and operation is easy.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering investigation, in particular to a method for rapidly and real-time grading soil surrounding rock based on parameters while drilling. Background technique [0002] Tunnel surrounding rocks are generally divided into soil surrounding rocks and rocky surrounding rocks, and soil surrounding rocks are subdivided into clay soil surrounding rocks, sandy soil surrounding rocks and gravel soil surrounding rocks according to different soil types. According to national standards, the indicators used in the classification of the three soil surrounding rocks are different. The classification of clay soil surrounding rocks requires soil samples to be measured in the laboratory to measure the liquid index I L , the sandy soil surrounding rock needs to carry out the standard penetration test on site to determine the standard penetration impact number N, and the gravel soil surrounding rock needs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/08
CPCG06Q50/08
Inventor 李术才王琦高松王雷江贝潘锐孙会彬秦乾于恒昌高红科栾英成许英东胥洪彬鹿伟
Owner SHANDONG UNIV
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