Testing method of rock-soil engineering in-situ rotation touch investigating and its special equipment

A technology for geotechnical engineering and special equipment, which is applied in the field of in-situ rotary penetration testing of geotechnical engineering, and can solve the problem of poor penetration of exploration depth requirements, unsatisfactory static penetration testing methods, and difficulty in ensuring deep geotechnical engineering exploration accuracy. and other problems to achieve the effect of effective test accuracy

Active Publication Date: 2007-05-02
铁道第三勘察设计院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention aims to solve the problem that the static penetration test method cannot meet the exploration depth requirements of high-rise building pile foundations, subways, high-speed railway bridge foundations, etc., and that the penetration i

Method used

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  • Testing method of rock-soil engineering in-situ rotation touch investigating and its special equipment
  • Testing method of rock-soil engineering in-situ rotation touch investigating and its special equipment
  • Testing method of rock-soil engineering in-situ rotation touch investigating and its special equipment

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Experimental program
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Embodiment

[0053] The operation steps of the present embodiment are described as follows in conjunction with Fig. 1:

[0054] 1. The rotary penetrating vehicle (drilling rig) is in place, and hydraulic outriggers and hydraulic anchors are carried out to make the rotary penetrating vehicle level and stable.

[0055] 2. Set up a mud pit, inject water or mud, and connect the mud pit, the mud pump of the rotary penetrating vehicle and the rotary faucet through the pipeline to make the pumping, water supply and return water unimpeded.

[0056] 3. Before the penetrating operation, connect the underground test bar to the above-ground reading instrument through the communication interface on the ground. The communication interface is set in the data acquisition memory of the underground test bar, and the above-ground reading instrument completes the content of the program.

[0057] The ground reading instrument is a special computer composed of CPU, display, memory, communication interface, spec...

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Abstract

An in-situ rotation contact method for the prospecting of rock and earth engineering features that the continuously applied pressure, rotational torque, water supplying pressure and their variations with the depth change of stratum are used to reflect the engineering properties of said stratum, directly and mechanically layer the stratum, and determine the load-bearing power, deformation modulus and anti-shear strength of foundation. Its dedicated apparatus is composed of a land data reader, and a underground prospecting rod unit consisting of prospecting rod, probe, and data acquisition and memory device.

Description

technical field [0001] The invention relates to a geotechnical engineering in-situ rotary penetration testing method and special equipment thereof. Background technique [0002] The well-known static penetration testing is to press a conical probe with a certain specification and a sensor inside it into the soil layer at a uniform speed by means of machinery, and it is a test method for measuring engineering geological characteristics according to the resistance of the probe. Due to the different softness and hardness of various soil layers in the stratum, the resistance suffered by the probe is also different naturally. The sensor transmits the electrical signal reflecting the different penetration resistance through the cable to the ground recording instrument to record it, and then through the penetration resistance The qualitative and statistical correlations between engineering geological characteristics of soil and soil can realize the exploration purpose of engineerin...

Claims

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Application Information

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IPC IPC(8): E02D1/02G01L9/04
Inventor 赵凤林陈新军叶启民
Owner 铁道第三勘察设计院
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