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    Rock-Cutting Mechanics Model and Its Application Based on Slip-Line Theory

    Source: International Journal of Geomechanics:;2018:;Volume ( 018 ):;issue: 005
    Author:
    Wang Qi;Gao Song;Jiang Bei;Li Shucai;He Manchao;Gao Hongke;Qin Qian
    DOI: 10.1061/(ASCE)GM.1943-5622.0001136
    Publisher: American Society of Civil Engineers
    Abstract: Rock mechanics parameters for underground engineering cannot be rapidly or comprehensively tested on site; thus, this article presents a method for determining rock mechanics parameters using drilling parameters obtained during a field drilling experiment. Based on the rock fracture characteristics, a rock-cutting mechanical model was developed that does not assume a damaged rock surface. In this model, the ultimate load of the rock under an oblique cutting force is derived based on slip-line theory. The relationship between the cutting torque and the rock mechanics parameters (hereafter referred to as the CT-R relationship) is then obtained. The results of laboratory tests were compared with theoretical analysis, and the mean deviation ξ was 16.8%, verifying the rationality of the rock-cutting mechanical model and the CT-RP relationship. The CT-RP relationship established in this article can provide a theoretical basis for the inversion of the rock mechanics parameters by the drilling parameters.
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      Rock-Cutting Mechanics Model and Its Application Based on Slip-Line Theory

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4250655
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    contributor authorWang Qi;Gao Song;Jiang Bei;Li Shucai;He Manchao;Gao Hongke;Qin Qian
    date accessioned2019-02-26T07:58:51Z
    date available2019-02-26T07:58:51Z
    date issued2018
    identifier other%28ASCE%29GM.1943-5622.0001136.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4250655
    description abstractRock mechanics parameters for underground engineering cannot be rapidly or comprehensively tested on site; thus, this article presents a method for determining rock mechanics parameters using drilling parameters obtained during a field drilling experiment. Based on the rock fracture characteristics, a rock-cutting mechanical model was developed that does not assume a damaged rock surface. In this model, the ultimate load of the rock under an oblique cutting force is derived based on slip-line theory. The relationship between the cutting torque and the rock mechanics parameters (hereafter referred to as the CT-R relationship) is then obtained. The results of laboratory tests were compared with theoretical analysis, and the mean deviation ξ was 16.8%, verifying the rationality of the rock-cutting mechanical model and the CT-RP relationship. The CT-RP relationship established in this article can provide a theoretical basis for the inversion of the rock mechanics parameters by the drilling parameters.
    publisherAmerican Society of Civil Engineers
    titleRock-Cutting Mechanics Model and Its Application Based on Slip-Line Theory
    typeJournal Paper
    journal volume18
    journal issue5
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/(ASCE)GM.1943-5622.0001136
    page4018025
    treeInternational Journal of Geomechanics:;2018:;Volume ( 018 ):;issue: 005
    contenttypeFulltext
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