Modeling and characteristic analysis of roadway profile under the influence of multiple factors

Liu, Zhixiang; Zhang, Kang; Xie, Miao; Xie, Chunxue; Sun, Z.

doi:10.1038/s41598-022-24205-6

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Zhang et al [ 4 ] studied the distribution and height characteristics of the roof of the excavation face after cutting, and analyzed the influence of the geometric motion of the cutting head on it. Liu et al [ 5 ] studied the morphological characteristics of the rough surface of coal and rock tunnels, and conducted in-depth research on the contour forming mechanism of the tunnel cut by the cutting head of the tunneling machine. The influence law between the cutting process parameters and the surface roughness of the cut formed tunnel was obtained.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the quality of tunnel roof topography by automatic cutting control under the coupling of multiple factors

Lu,

Li,

Zhu

et al. 2024

PLoS ONE

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The automatic cutting of coal and rock surface morphology modeling based on the actual geological environment of coal mine underground excavation and mining is of great significance for improving the surface quality of coal and rock after cutting and enhancing the safety and stability of advanced support. To this end, using the principle of coordinate transformation, the kinematic trajectory of the cutting head of the tunneling machine is established, and the contour morphology of the cutting head under variable cutting technology is obtained. Then, based on the regenerative vibration theory of the cutting head, a dynamic model of the cutting head coal wall is established, and the coordinate relationship of the cutting head in the tunnel coordinate system under vibration induction is analyzed. Based on fractal theory and Z-MAP method, a simulation method for the surface morphology of coal and rock after cutting is proposed, which is driven by the cutting trajectory Under the coupling effect of cutting vibration induction and random fragmentation of coal and rock, simulation of the surface morphology of comprehensive excavation tunnels was conducted, and relevant experiments were conducted to verify the results. A 1:3 similarity experimental model of EBZ160 tunneling machine was used to build a cutting head coal and rock system cutting experimental platform for comparative experiments of cutting morphology. Furthermore, statistical methods were used to compare and evaluate the simulated roof with the actual roof. The results show that the relative errors between the maximum range of peaks and valleys, the peak skewness coefficient of height standard deviation, and the kurtosis coefficient of the actual roof are 1.3%, 24.5%, 16%, and 2.9%, respectively. Overall, this indicates that the surface morphology distribution characteristics of the simulated roof and the actual roof are similar, verifying the effectiveness of the modeling and simulation method proposed in this paper, and providing theoretical support for the design and optimization of advanced support in the future.

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Section: Introductionmentioning

confidence: 99%

Analysis of the quality of tunnel roof topography by automatic cutting control under the coupling of multiple factors

Lu,

Li,

Zhu

et al. 2024

PLoS ONE

Self Cite

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“…It provides a design idea for automatic control of mine drilling rig. Reference [6] discussed the motion law of the cutting head through the kinematic analysis of the roadheader, and then studied the contour forming of the roadway roof. In reference [7], the onboard drilling manipulator of roadheader is designed and studied, and its structure, performance and stability of the whole machine are studied in depth by combining with kinematics analysis.…”

mentioning

confidence: 99%

Collision Detection Method for Anchor Digging Machine Water Drilling Rig

Liu,

Yan,

Zou

et al. 2024

Preprint

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Loading exploration and drainage drilling machine on the anchor machine can effectively increase the tunneling efficiency. In order to avoid the interference between the water drilling rig and the anchor machine in the working process, it is necessary to calculate the joint variables of the drilling rig accurately. Using the robot kinematics analysis method, the kinematics model of the system is established. At the same time, combined with bounding box collision detection technology, the key parts of the equipment are mathematically modeled. A method for collision detection of onboard water exploration and drainage drilling rig of anchor digging machine is proposed. The simulation results show : The designed collision detection method can be used to guide the attitude adjustment of the equipment during the drilling operation of the equipment, and can accurately analyze the interference characteristics and collision detection of the equipment. It provides a theoretical basis for the automatic excavation of the research object and the automatic control of drilling. The azimuth adjustment range of the drilling rig for the experiment is : ± 15°, and the pitch angle adjustment range is : + 5° to -10°.

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Modeling and characteristic analysis of roadway profile under the influence of multiple factors

Cited by 2 publications

References 6 publications

Analysis of the quality of tunnel roof topography by automatic cutting control under the coupling of multiple factors

Analysis of the quality of tunnel roof topography by automatic cutting control under the coupling of multiple factors

Collision Detection Method for Anchor Digging Machine Water Drilling Rig

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