TBM-Mounted Seismic Ahead-Prospecting for Fast Detecting Anomalous Geology Ahead of Tunnel Face

Zhou, Wei; Xu, Xinji; Wang, Kai; Chen, Lei; Liu, Zhengyu; Li, Yao

doi:10.1109/access.2020.3045701

Cited by 11 publications

(3 citation statements)

References 33 publications

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“…Currently, many kinds of advanced detection methods exist for geological anomaly, such as geological, advanced pilot pit, and geophysical exploration methods. The geophysical prospecting method involves detecting the geological body indirectly using instruments, and the geological structure is not destroyed in this process 31 – 33 . The equivalent anti-flux transient electromagnetic method (OCTEM) is a fast, non-destructive, and strong anti-interference transient electromagnetic method.…”

Section: Mechanism Of Mud Inclusion Type Underground Debris Flowsmentioning

confidence: 99%

Study on formation mechanism of mud-inclusion-type underground debris flows using natural caving method

Niu,

Hou,

Bao

et al. 2024

Sci Rep

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This study aimed to investigate the formation mechanism of the mud-inclusion-type underground debris flows of natural caving underground mines. The characteristics of fine moraine particles flowing through the coarse-grained ore bed were used to analyze the formation process of mud inclusions in the caving ore bed through a physical model test. Based on the movement behavior of the mud inclusions of moraine in the caving ore bed, a formation-mechanism generalized model of underground debris flows with mud inclusions was established. The model was used to examine the formation mechanism of mud-inclusion-type underground debris flows in natural caving. The results showed that the fine moraine particles had good cross-flow characteristics in the process of drawing coarse-grained ore. The accumulation of fine moraine in the ore bed was a prerequisite for the formation of mud inclusions, and the fluid inclusions were formed by a mixture of the particles with the infiltrated water. When mud inclusions in moraine are affected by many factors, such as ore-drawing vibrations, blasting vibrations, and groundwater, the inclusions undergo multiple migration–stop–migration cycles, resulting in separation or fusion. However, the inclusions are released along the optimal random pore path to the outlet, forming a certain scale of underground debris flows accidents. The accuracy and reliability of the formation mechanism were verified through geophysical explorations based on the equivalent inverse flux transient electromagnetic method. This study not only broadens the research on debris flow, but also provides theoretical guidance for the prevention and control of underground debris flows.

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Section: Mechanism Of Mud Inclusion Type Underground Debris Flowsmentioning

confidence: 99%

Study on formation mechanism of mud-inclusion-type underground debris flows using natural caving method

Niu,

Hou,

Bao

et al. 2024

Sci Rep

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show abstract

“…But limited by the lower frequency of TBM drilling noise, the resolution of TSWD is lower than that by using active source. Liu et al and Nie et al developed the seismic ahead prospecting (SAP [32][33][34]) method, which consists of a three-dimensional observation system, using either active or passive seismic sources, and has been widely used in engineering applications. The above detection methods require large observation space (touch the rock mass directly) and strict observation conditions for seismic data acquisition.…”

Section: Introductionmentioning

confidence: 99%

Double-shield TBM Mounted Seismic Ahead-prospecting System and its Application

Chen,

Li,

et al. 2024

Preprint

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Double-shield tunnel boring machine (TBM) has been widely used in tunnel construction. However, the unknown adverse geological conditions in front of the tunnel face can easily disturb the construction progress of the double-shield TBM. To ensure the construction safety of double-shield TBM, it is necessary to predict the geological information in front of the tunnel face in advance. However, the unique tunnel environment with a double-shield TBM makes it hard to predict geological conditions by conventional detection techniques. Therefore, this paper proposes a double-shield TBM-mounted seismic ahead-prospecting system. According to the special structure of double-shield TBM, a geological detection system mainly including the vibration source and rod-sensing elements was developed. The mounted vibration source is excited by high-pressure gas, and the excited seismic signal has strong energy, which can realize long-distance disaster prospection. The rod-sensing element can directly contact the surrounding rock mass through the grouting hole and collect reflected wave signals with a higher signal-to-noise ratio. The system can directly excite and receive seismic waves in the rock mass around the tunnel. The proposed system has been mounted on double-shield TBMs and verified based on field.

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“…The design capacity of drilling rig is 300 m, and the most type of TBM exploration drilling hole can be satisfied. Also, it can support with various construction techniques such as rotary drilling, pneumatic percussion drilling, and hydraulic percussion drilling [4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Development and application of high-power advanced exploration drilling rig for coal mining TBM

Han¹,

Song²,

Peng³

2022

Vib. proced.

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With the continuous popularization and application of TBM equipment and technology in the field of coal mine, aiming at the problems of small torque and small propulsion of existing TBM advanced exploration drilling rigs for coal mine, which is difficult to drill long borehole, and lack of special high-power drilling equipment to match with it, a high-power drilling rig for coal mine TBM is developed. This paper introduces the structure of the drilling rig, analyzes the structure and principle of the luffing mechanism and the rotary table protection device, also the strength of the key parts. Through the application in Guineng Group Heilaga Juxin coal mine shows that this equipment has large torque and propulsion, the hydraulic system and operation mode meet the requirements of long-distance separate layout in TBM. The drilling rig has good stability and high efficiency, and can meet the various needs of long drilling for advanced exploration, which promotes the application of TBM equipment and technology in the field of coal mine.

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TBM-Mounted Seismic Ahead-Prospecting for Fast Detecting Anomalous Geology Ahead of Tunnel Face

Cited by 11 publications

References 33 publications

Study on formation mechanism of mud-inclusion-type underground debris flows using natural caving method

Study on formation mechanism of mud-inclusion-type underground debris flows using natural caving method

Double-shield TBM Mounted Seismic Ahead-prospecting System and its Application

Development and application of high-power advanced exploration drilling rig for coal mining TBM

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