破碎顶板迈步滑移超前支护设备可靠性研究

doi:10.16265/j.cnki.issn1003-3033.2023.S2.0030

摘要/Abstract

摘要：

为解决巷道围岩开采过程中由于支护不及时导致顶板易发生坍塌、冒顶事故等问题,提出迈步滑移式超前支护设备,应用仿真模拟方法分析超前支护设备的可靠性。首先,介绍滑移式超前支护结构组成及原理,明确超前支护设备支护效果的功能可靠性;然后,仿真分析超前支护设备在全支撑状态和迈步过程状态的整机结构强度,验证超前支护设备设计的合理性。最后,利用ANSYS Workbench模态分析超前支护设备,获得设备不同振型特征。结果表明:在全支撑状态下超前支护设备最大变形发生在纵梁前端部位(22.139 mm)、最大应力位于前后支撑纵梁的铰接处(205.45 MPa)、等效应变集中的位置位于拱形横梁与支撑纵梁的相交区域(11.624×10^-4);在迈步过程状态下超前支护最大变形发生在副支撑组前纵梁上(13.411 mm)、支护最大应力出现在支撑纵梁与拱形横梁的铰接处(187.65 MPa)、推移油缸的最大位移出现在活塞杆头与副支撑组铰接部(5.633 2 mm)、最大应力则发生在与主支撑组铰接处(187.65 MPa);整机的一、二、三、四阶固有频率分别为41.715 2、44.591、60.826和62.789 Hz,发生形变的部位分别位于副支撑组前支撑立柱上与副支撑组后支撑立柱上。

关键词: 顶板, 超前支护, 强度, 模态分析, 振型

Abstract:

In order to solve the problems of roof collapse and roof fall accidents caused by untimely support during the mining process of tunnel surrounding rock, a step sliding-type advanced support equipment was proposed, and its reliability was studied using simulation methods. Firstly, the composition and principle of the sliding-type advanced support structure were introduced, and the functional reliability of the support effect was clarified. Then, the overall structural strength of the advanced support equipment in both fully supported and stepping process states was simulated and analyzed to verify the rationality of the design of the advanced support equipment. Finally, modal analysis was conducted on the advanced support equipment using ANSYS Workbench to obtain different vibration mode patterns of the equipment. The results show that the maximum deformation of the advanced support equipment in the fully supported state occurs at the front end of the longitudinal beam (with a value of 22.139 mm); the maximum stress is located at the hinge of the front and rear supporting longitudinal beams (with a value of 205.45 MPa), and the location where the equivalent strain is concentrated is located in the intersection area of the arched crossbeam and the supporting longitudinal beam (with a value of 11.624×10^-4). In the stepping process state, the maximum deformation of the advanced support occurs on the front longitudinal beam of the auxiliary support group (with a value of 13.411 mm); the maximum stress of the support occurs at the hinge of the supporting longitudinal beam and the arched crossbeam (with a value of 187.65 MPa); the maximum displacement of the pushing oil cylinder occurs at the hinge of the piston rod head and the auxiliary support group (with a value of 5.633 2 mm), and the maximum stress occurs at the hinge of the main support group (with a value of 187.65 MPa). The first, second, third, and fourth natural frequencies of the machine are 41.715 2, 44.591, 60.826, and 62.789 Hz, respectively. The deformed parts are located on the front support column and the rear support column of the auxiliary support group.

Key words: roof, advanced support, strength, modal analysis, vibration mode

中图分类号:

X936

胡志伟, 刘少杰, 谢苗, 石忠定, 刘治翔. 破碎顶板迈步滑移超前支护设备可靠性研究[J]. 中国安全科学学报, 2023, 33(S2): 28-33.

HU Zhiwei, LIU Shaojie, XIE Miao, SHI Zhongding, LIU Zhixiang. Research on reliability of advanced support equipment for step sliding of broken roof[J]. China Safety Science Journal, 2023, 33(S2): 28-33.

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参考文献 15

[1]	张进鹏, 刘立民, 刘传孝, 等. 深部大倾角煤岩层巷道断面形状与耦合支护[J]. 中南大学学报:自然科学版, 2021, 52(11):4074-4 087.
	ZHANG Jinpeng, LIU Limin, LIU Chuanxiao, et al. Cross-section shape and coupling support of deep and large-inclined coal and rock roadway[J]. Journal of Central South University:Science and Technology, 2021, 52(11):4074-4 087.
[2]	谢苗, 李晓婧, 刘治翔, 等. 掘进机扰动下超前支架动态响应特性分析[J]. 中国安全科学学报, 2018, 28(4):65-71. doi: 10.16265/j.cnki.issn1003-3033.2018.04.012
	XIE Miao, LI Xiaojing, LIU Zhixiang, et al. Analysis and study of dynamic response characteristics of advance support disturbed by roadheader[J]. China Safety Science Journal, 2018, 28 (4): 65-71. doi: 10.16265/j.cnki.issn1003-3033.2018.04.012
[3]	范东林, 王巍. 大采高工作面回风巷道支护参数优化研究[J]. 中国安全科学学报, 2022, 32(增2):166-171.
	FAN Donglin, WANG Wei. Study on support parameter optimization of mining roadway in working face with large mining height[J]. China Safety Science Journal, 2022, 32(S2): 166-171. doi: 10.16265/j.cnki.issn1003-3033.2022.S2.0098
[4]	尚玺. 深部顶板夹煤层软岩巷道承载结构失效分析及返修技术[D]. 湘潭: 湖南科技大学, 2022.
	SHANG Xi. Failure analysis and repair technology of bearing structure of soft rock roadway with coal seam in deep roof[D]. Xiangtan: Hunan University of Science and Technology, 2022.
[5]	段燕伟. 不同巷道断面形状对围岩稳定性的数值模拟研究[J]. 价值工程, 2022, 41(6):131-133.
	DUAN Yanwei. Numerical simulation of stability of surrounding rock with different roadway section shapes[J]. Value Engineering, 2022, 41 (6): 131-133.
[6]	安通. 大断面拱形巷道综掘掘支作业合理空顶距探讨[J]. 江西煤炭科技, 2020(2):28-30.
	AN Tong. Discussion on reasonable empty roof distance of comprehensive excavation and supporting operation in large-scale arched roadway[J]. Jiangxi Coal Science & Technology, 2020 (2): 28-30.
[7]	杜健. 半煤岩拱形巷道临时支护设备力学分析及优化[D]. 阜新: 辽宁工程技术大学, 2013.
	DU Jian. The mechanical analysis and optimization of temporary support equipment used in arched seni-coal rock roadway[D]. Fuxin: Liaoning University of Engineering and Technology, 2013.
[8]	LI Li, XIANG Songkong, WEI Yang, et al. A study of anchor cable and c-shaped tube support for the roadway of shuangliu coal mine[J]. Symmetry, 2023, 15(9):78-85. doi: 10.3390/sym15010078
[9]	YU Haijun, LIU Honglin, XIA Yang, et al. A study on the deformation mechanism of the rock surrounding a weakly cemented cross-layer roadway, under tectonic stress[J]. Energies, 2023, 16(6):2546-2 548. doi: 10.3390/en16010546
[10]	JIA Ce, LI Sheng, FAN Chaojun, et al. Supporting optimization of thick seam roadway with top coal based on orthogonal matrix analysis[J]. Scientific Reports, 2023, 13(1):933-933. doi: 10.1038/s41598-023-27817-8 pmid: 36650226
[11]	任增超. 基于顶板破碎段的掘进巷道支护技术应用[J]. 矿业装备, 2023(11):76-77.
	REN Zengchao. Application of support technology for excavation tunnels based on roof fragmentation section[J]. Mining Equipment, 2023 (11): 76-77.
[12]	赵兴远. 巷道破坏机理与支护形式的选择[J]. 科技资讯, 2006(27):91-93.
	ZHAO Xingyuan. The mechanism of tunnel failure and the selection of support forms[J]. Technology Information, 2006(27): 91-93.
[13]	王建霖. 临时支护装置在煤矿掘进工作面的应用[J]. 矿业装备, 2023(12):19-21.
	WANG Jianlin. The application of temporary support devices in coal mine excavation working face[J]. Mining Equipment, 2023 (12): 19-21.
[14]	程光鹏. 掘进工作面过顶板破碎带支护方式研究[J]. 山西化工, 2023, 43(11):166-168.
	CHENG Guangpeng. Research on support methods for broken zone passing through roof in excavation face[J]. Shanxi Chemical Industry, 2023, 43 (11): 166-168.
[15]	王建波, 李洋, 常庆. 基于数值模拟的软岩巷道支护优化研究[J]. 山东煤炭科技, 2023, 41(11):57-60.
	WANG Jianbo, LI Yang, CHANG Qing. Optimization study of soft rock roadway support based on numerical simulation[J]. Shandong Coal Science and Technology, 2023, 41 (11): 57-60.

材料	屈服强度/ MPa	密度/ (kg·m^-3)	弹性模量/ GPa	泊松比
Q460	460	7 850	206	0.28
40Cr	785	7 870	211	0.277

参数	1阶	2阶	3阶	4阶
固有频率/Hz	41.715 2	44.591 0	60.826 0	62.789 0
最大变形/mm	1.127 20	1.181 00	1.825 40	2.027 13