Experimental and Numerical Study on Cutting Performance of Coal Plow

Tian, Zhen; Jing, Shuangxi; Liu, Wei; Gao, Shan; Zhang, Jianjun

doi:10.1109/access.2020.3039438

Cited by 5 publications

(5 citation statements)

References 32 publications

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“…The auxiliary installation device for rock bolt drilling In the 20th century, Cundall et al [12][13][14] proposed the discrete element method (DEM), and simulated the conveying performance of screw conveyor for the first time through DEM. Nowadays, DEM has become the main application method for simulating screw conveying, and it is also widely used in geotechnical field, [15][16][17] mining field, [18][19][20] chemical field, [21][22][23] and agricultural field. [24][25][26] With the continuous improvement and development of the DEM, it has been widely used in the field of bit research to construct different drilling environments through DEM, and then analyze the particle movement in the drilling process.…”

Section: F I G U R Ementioning

confidence: 99%

Drilling study of bit in gravel environment based on DEM–MBD

Gao

Liu

et al. 2021

Engineering Reports

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In the process of rock bolt support for the roadway with floor heave, the rock bolt cannot reach the bottom of the borehole smoothly due to the influence of the collapse gravels around the borehole. In order to solve the problem of difficult rock bolt installation, the auxiliary installation device of rock bolt drilling was innovatively designed. At the same time, a new method of auxiliary bolt installation was put forward, in which a bit was installed at the bottom of the bolt to assist the bolt drilling. The drilling process of the bit was simulated by the co-simulation of discrete element method (DEM) and multibody dynamics method (MBD). The axial resistance of the bit and the change law of the particles movement were studied under different motion parameters and structural parameters. It was found that the drilling performance of bit was directly related to the motion parameters and structure of bit. And the selection of gravel parameters in DEM was verified by experiments. The research results can provide technical guidance for bit structure design and the selection of motion parameters of bolt drilling auxiliary installation device, and can effectively improve the rock bolt installation efficiency.

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Section: F I G U R Ementioning

confidence: 99%

Drilling study of bit in gravel environment based on DEM–MBD

Gao

Liu

et al. 2021

Engineering Reports

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Section: A Establishment Of the Numerical Modelmentioning

confidence: 99%

“…The elastic modulus of the anchor rod used is 2.0×10 5 MPa, and the prestress is 5t. The elastic modulus of the anchor cable is 1.95×10 5 MPa, Ø22, the row spacing is 1400 mm, and the prestress is 15t. The elastic modulus of shotcrete is 2.56×10 4 MPa, Poisson's ratio is 0.21, thickness is 150 mm, and strength grade is C20.…”

Section: A Establishment Of the Numerical Modelmentioning

confidence: 99%

“…KANEKO [4] based on the existing Japanese distribution network as a model and used it for computer numerical simulation, proposed a method to determine the optimal radial loop configuration in the photovoltaic distribution network, and evaluated the effectiveness of the configuration , The result has good reliability. TIAN [5] In order to study the machinability of coal ploughs, improve the performance of coal ploughs, so as to achieve efficient mining of coal mines. A three-dimensional model was established by computer numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

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Application of Computer Method in Solving Complex Engineering Technical Problems

Qiao

et al. 2021

IEEE Access

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In order to verify the applicability of the computer numerical simulation method under complex engineering conditions, and solve the problem that it is difficult to guarantee the normal construction of underground projects with a depth of more than 1 km (it is difficult to carry out multiple field attempts under highdepth conditions, and if you simply use ordinary the calculation method, its calculation accuracy is difficult to guarantee). For the construction of complex geological conditions of an underground mine with a depth of 1300 m in the Central Plains of China, based on the finite difference method (FDM) with high calculation accuracy, using FLAC 3D software based on FDM, and using progressive design method (PDM) [1], design a variety of different schemes and analyze the mechanism of force and deformation of the surrounding rock mass of the project. Apply the obtained optimal scheme in actual engineering, and monitor the actual force and deformation. Comparing the results of the computer numerical simulation with the monitoring results, the results show that the computer numerical simulation method can also have good application in the actual engineering under the geological conditions of ultra-kilometer depth. It also provides theoretical basis and technical guidance for engineering hypothesis under approximate conditions.

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“…Coal plow adopts flat pick, which is different from pick type of shearer and road header, and the plow pick is an important part when the plow cutting the coal wall [19], [20]. The research on the cutting performance of flat pick is helpful to improve the performance of coal plow.…”

Section: Introductionmentioning

confidence: 99%

Cutting Test and Finite Element Analysis of Plow Pick

et al. 2021

Self Cite

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The pick is the working part of the coal plow, the cutting performance of the pick is very important for the efficient production of the coal mine. In order to analyze the dynamic characteristics of the plow pick during the cutting process, a cutting test platform was built. The force of the plow pick and the vibration of the plow head were obtained through the cutting test, and the relationship between the vibration of the plow head and the cutting speed and cutting depth was analyzed. In order to study the influence of different alloy head shapes on the performance of plow pick, two kinds of pick were designed: a pick with chip bit and a pick with conical bit. The finite element method was used to establish the cutting model, and the numerical simulation was carried out. The research results show that the caving effect of pick with chip bit is better than that of pick with conical bit, but the cutting resistance of the pick with chip bit is greater than pick with conical bit. When the cutting angle was 60°, the force of the pick is the smallest and the force of the pick increases with the increase of the installation angle. The maximum error of the force of the pick obtained by the two methods was 8.41%. The cutting test verified the results of the numerical simulation. According to the research results, two types of pick were adopted in the coal plow, which were installed in different positions. Through the analysis of the actual working state of the plow, it is found that the damage form of the pick was consistent with the result of numerical simulation.

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Experimental and Numerical Study on Cutting Performance of Coal Plow

Cited by 5 publications

References 32 publications

Drilling study of bit in gravel environment based on DEM–MBD

Drilling study of bit in gravel environment based on DEM–MBD

Application of Computer Method in Solving Complex Engineering Technical Problems

Cutting Test and Finite Element Analysis of Plow Pick

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