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累积爆破穿透半径的预测

Prediction of the Penetration Radius of Cumulative Blasting.

作者信息

Jia Jinzhang, Wu Yumo, Zhao Dan, Li Bin, Wang Dongming

机构信息

College of Safety Science and Engineering, Liaoning Technical University, Liaoning, Fuxin 123000, China.

Key Laboratory of Thermal Dynamic Disaster Prevention and Control of Ministry of Education, Liaoning Technical University, Liaoning, Huludao 125105, China.

出版信息

ACS Omega. 2023 Jun 5;8(24):22159-22167. doi: 10.1021/acsomega.3c02453. eCollection 2023 Jun 20.

DOI:10.1021/acsomega.3c02453
PMID:37360449
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10286281/
Abstract

To improve the efficiency of coal seam gas extraction, the influence characteristics of different factors on the penetration effect of cumulative blasting were determined and the hole spacing was effectively predicted; in this work, we used ANSYS/LS-DYNA numerical simulation software to establish the penetration model of cumulative blasting. Combined with an orthogonal design scheme, the crack radius prediction of cumulative blasting was studied. A prediction model for predicting the fracture radius of cumulative blasting based on three groups of different factors was established. The results showed that the primary and secondary order of factors that affected the fracture radius of cumulative blasting was as follows: ground stress > gas pressure > coal firmness coefficient. The penetration effect decreased with increasing ground stress and decreased with an increase in the gas pressure and coal firmness coefficient. The industrial field test was carried out. The gas extraction concentration increased by 73.4% after cumulative blasting, and the effective crack radius of cumulative blasting was approximately 5.5-6 m. The maximum error of the numerical simulation was 1.2%, and the maximum error of the industrial field test was 6.22%, which proved that the crack radius prediction model of cumulative blasting was correct.

摘要

为提高煤层气抽采效率，确定了不同因素对聚能爆破贯通效果的影响特性，并有效预测了孔间距；在本研究中，我们使用ANSYS/LS-DYNA数值模拟软件建立了聚能爆破的贯通模型。结合正交设计方案，研究了聚能爆破裂纹半径预测问题。建立了基于三组不同因素的聚能爆破裂隙半径预测模型。结果表明，影响聚能爆破裂隙半径的因素主次顺序为：地应力＞瓦斯压力＞煤坚固性系数。贯通效果随地应力增大而降低，随瓦斯压力和煤坚固性系数增大而降低。进行了工业现场试验。聚能爆破后瓦斯抽采浓度提高了73.4%，聚能爆破有效裂隙半径约为5.5-6m。数值模拟最大误差为1.2%，工业现场试验最大误差为6.22%，证明聚能爆破裂纹半径预测模型正确。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/d4819018493e/ao3c02453_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/8d270161c851/ao3c02453_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/24766bccfe93/ao3c02453_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/69a0f60773f6/ao3c02453_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/9dfa82e82fc6/ao3c02453_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/1c9ed10f25b5/ao3c02453_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/bfe7d6f4bc55/ao3c02453_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/12fd053db13f/ao3c02453_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/db64399010cd/ao3c02453_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/d4819018493e/ao3c02453_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/8d270161c851/ao3c02453_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/24766bccfe93/ao3c02453_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/69a0f60773f6/ao3c02453_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/9dfa82e82fc6/ao3c02453_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/1c9ed10f25b5/ao3c02453_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/bfe7d6f4bc55/ao3c02453_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/12fd053db13f/ao3c02453_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/db64399010cd/ao3c02453_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/631c/10286281/d4819018493e/ao3c02453_0010.jpg

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本文引用的文献

1
Study on prediction of blasting cracking radius of liquid CO2 in coal.液态 CO2 在煤体中爆破致裂半径预测研究
PLoS One. 2023 Jan 23;18(1):e0280742. doi: 10.1371/journal.pone.0280742. eCollection 2023.
2
Research on the Mechanism and Control Technology of Coal Wall Sloughing in the Ultra-Large Mining Height Working Face.超大采高综放工作面煤壁片帮机理及控制技术研究。
Int J Environ Res Public Health. 2023 Jan 3;20(1):868. doi: 10.3390/ijerph20010868.
3
Abutment Pressure Distribution Law and Support Analysis of Super Large Mining Height Face.
超大采高综采面支架工作阻力分布规律及支护分析
Int J Environ Res Public Health. 2022 Dec 23;20(1):227. doi: 10.3390/ijerph20010227.
4
Experimental study on the effect of cold soaking with liquid nitrogen on the coal chemical and microstructural characteristics.液氮冷浸对煤的化学及微结构特性影响的实验研究。
Environ Sci Pollut Res Int. 2023 Mar;30(13):36080-36097. doi: 10.1007/s11356-022-24821-9. Epub 2022 Dec 21.
5
Blasting Law of Liquid CO Phase Change in Coal Mine Based on Numerical Simulation.基于数值模拟的煤矿液态CO相变爆破规律
Int J Anal Chem. 2022 Aug 27;2022:6866925. doi: 10.1155/2022/6866925. eCollection 2022.
6
Study on parameter optimization of deep hole cumulative blasting in low permeability coal seams.低渗透煤层深孔聚能爆破参数优化研究
Sci Rep. 2022 Mar 24;12(1):5126. doi: 10.1038/s41598-022-09219-4.
7
Study of the influencing factors of the liquid CO2 phase change fracturing effect in coal seams.煤层液态 CO2 相变压裂效果影响因素研究。
PLoS One. 2021 Jul 21;16(7):e0254996. doi: 10.1371/journal.pone.0254996. eCollection 2021.