Accuracy analysis on evaluation indexes of dust suppressant effect

doi:10.16265/j.cnki.issn1003-3033.2022.01.026

Abstract

Abstract:

In order to improve safety capability and occupational health level of coal mines, to reduce occupational hazards such as pneumoconiosis, and quickly and accurately assess suppression performance of different dust suppressants, commonly used evaluation indexes, such as solidified layer thickness, wind erosion resistance, UCS and penetration resistance of such suppressants, were studied, and their accuracy was analyzed based on test methods of each index and their performance difference under various influencing factors. The analysis results show that evaluation indexes like solidified layer thickness, wind erosion resistance and UCS exhibit poor performance in assessing dust suppression effect, while penetration resistance proves to be better for that.

Key words: dust suppressant, evaluation indexes, wind erosion resistance, uniaxial compressive strength (UCS), penetration resistance, thickness of solidified layer

LUO Zhenmin, WANG Dengfei, DING Xuhan. Accuracy analysis on evaluation indexes of dust suppressant effect[J]. China Safety Science Journal, 2022, 32(1): 195-200.

Figures/Tables 2

Tab.1

Tab.2

References 17

[1]	郭进平, 尚旭光, 王雪妮. 基于二元语义和AHP法的矿山职业危害综合评价方法[J]. 中国安全科学学报, 2011, 21(8):116-122.
	GUO Jinping, SHANG Xuguang, WANG Xueni. Comprehensive safety evaluation method for mine occupational hazards based on two-tuple linguistic information and AHP[J]. China Safety Science Journal, 2011, 21(8):116-122.
[2]	XU Guang, CHEN Yinping, JACQUES Eksteen, et al. Surfactant-aided coal dust suppression: a review of evaluation methods and influencing factors[J]. Science of the Total Environment, 2018, 639:1060-1076. doi: 10.1016/j.scitotenv.2018.05.182
[3]	程卫民, 周刚, 陈连军, 等. 我国煤矿粉尘防治理论与技术20年研究进展及展望[J]. 煤炭科学技术, 2020, 48(2):1-20.
	CHENG Weimin, ZHOU Gang, CHEN Lianjun, et al. Research progress and prospect of dust control theory and technology in China's coal mines in the past 20 years[J]. Coal Science and Technology, 2020, 48(2):1-20.
[4]	陈学栋. 露天煤矿胶带机运煤过程产尘机理及抑尘技术研究[D]. 阜新: 辽宁工程技术大学, 2020.
	CHEN Xuedong. Study on dust production mechanism and dust suppression technology of belt conveyor in open-pit coal mine[D]. Fuxin: Liaoning Technical University, 2020.
[5]	ROSA L S, JEB S T, STEVE L W. Stabilization of silty sand with nontraditional additives[J]. Transportation Research Record Journal of the Transportation Research Board, 2002, 1787:61-70. doi: 10.3141/1787-07
[6]	DING Xuhan, XU Guang, ZHOU Wei, et al. Effect of synthetic and natural polymers on reducing bauxite residue dust pollution[J]. Environmental Technology, 2020, 41(5):556-565. doi: 10.1080/09593330.2018.1505963 pmid: 30052142
[7]	李颖泉, 董波, 蔡觉先, 等. 散堆煤体复合型抑尘剂性能表征及应用研究[J]. 兰州交通大学学报, 2019, 38(5):105-113.
	LI Yingquan, DONG Bo, CAI Juexian, et al. Research on performance characterization and application of the composite dust suppressant for pulverized coal[J]. Journal of Lanzhou Jiaotong University, 2019, 38(5) :105-113.
[8]	DING Xuhan, XU Guang, LIU Wei, et al. Effect of polymer stabilizers' viscosity on red sand structure strength and dust pollution resistance[J]. Powder Technology, 2019, 352:117-125. doi: 10.1016/j.powtec.2019.04.046
[9]	Al-KHANBASHI A, ABDALLA W S. Evaluation of three waterborne polymers as stabilizers for sandy soil[J]. Geotechnical and Geological Engineering, 2006, 24(6):1603-1625. doi: 10.1007/s10706-005-4895-3
[10]	罗瑞冬, 林木松, 罗运柏, 等. 新型煤尘抑尘剂的制备及特性[J]. 煤炭学报, 2016, 41(增2):454-459.
	LUO Ruidong, LIN Musong, LUO Yunbai, et al. Preparation and properties of a new type of coal dust suppressant[J]. Journal of China Coal Society, 2016, 41(S2):454-459.
[11]	郑同利, 郑同超, 许耕昕, 等. 新型高分子聚合物抑尘剂现场使用的试验研究[J]. 中国高新区, 2018(8):28-29.
	ZHENG Tongli, ZHENG Tongchao, XU Gengxin, et al. Experimental study on field application of new polymer dust suppressant[J]. Science & Technology Industry Parks, 2018(8):28-29.
[12]	陈景序, 荆德吉, 葛少成, 等. 散煤运输用新型高分子抑尘剂性能的试验研究[J]. 中国安全科学学报, 2019, 29(2):140-146.
	CHEN Jingxu, JING Deji, GE Shaocheng, et al. Experimental study on performance of a new kind of macromolecule dust suppressant for pulverized coal transportation[J]. China Safety Science Journal, 2019, 29(2):140-146.
[13]	DING Xuhan, XU Guang, KURUPPU M, et al. Research and application of non-traditional chemical stabilizers on bauxite residue (red sand) dust control, a review[J]. Science of the Total Environment, 2018, 616/617:1552-1565. doi: 10.1016/j.scitotenv.2017.10.158
[14]	LAHALIH M S, AHMED N. Effect of new soil stabilizers on the compressive strength of dune sand[J]. Construction Building Materials, 1998, 12(6/7):321-328. doi: 10.1016/S0950-0618(98)00024-5
[15]	黄河, 施斌, 刘瑾, 等. STW 型生态土壤稳定剂用于防风固沙试验研究[J]. 岩土工程学报, 2008, 30(12):1900-1904.
	HUANG He, SHI Bin, LIU Jin, et al. Experimental study on application of STW ecotypic soil stabilizer in windbreak and sand fixation[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(12):1900-1904.
[16]	李彦伟, 姜耀东, 杨英明, 等. 煤单轴抗压强度特性的加载速率效应研究[J]. 采矿与安全工程学报, 2016, 33(4):754-760.
	LI Yanwei, JIANG Yaodong, YANG Yingming, et al. Research on loading rate effect of uniaxial compressive strength of coal[J]. Journal of Mining & Safety Engineering, 2016, 33(4):754-760.
[17]	DING Xuahn, XU Guang, MEHMET K, et al. Lignosulfonate treating bauxite residue dust pollution: enhancement of mechanical properties and wind erosion behavior[J]. Water Air & Soil Pollution, 2018, 229(7):1-13.

编号	主要成分参数(g/100 mL)
编号	十二烷基磺酸钠	聚丙烯酸钠	羧甲基纤维素钠	无水硫酸钠
Ⅰ	0.1	0.1	0.25	0.05
Ⅱ	0.2	0.2	0.5	0.1
Ⅲ	0.4	0.5	0.75	0.35
Ⅳ	0.6	0.8	1.0	0.6
Ⅴ	0.8	1.1	1.25	0.8

评价指标	优点	缺点
固化层厚度	①原材料设备容易获得 ②煤样略微压实省时省力	①厚度大小无法代表抑尘剂真实效果 ②量化难度高且费时 ③人为喷洒时喷洒不均匀影响试验结果
抗风蚀特性	直观表示抑尘剂抑尘效果	①未达到起动风速时准确性不足,且试验过程不能无限制提高风速条件 ②裂纹产生和发育过程的高度随机性导致准确性不足 ③试验过程中振动加速裂纹产生和发育最终导致试验结果准确性不足 ④需要频繁称重,因此不可能消除人为干扰对试验结果影响 ⑤喷洒抑尘剂后会对煤样收缩造成游离砂暴露进而影响试验结果
UCS特性	①操作简单,省时省力 ②原材料设备容易获得	①大尺寸煤样进行UCS特性研究时准确性较低 ②施加的高倍压力可能会改变煤的表面结构进而影响测量结果 ③取样过程可能会产生内部裂纹或断裂形成预变形面进而影响测量结果 ④过高加载速率可能会破坏煤样影响试验结果
贯穿阻力特性	①可以准确判断抑尘剂抑尘效果 ②省时省力 ③原材料容易获得	人为喷洒抑尘剂时喷洒不均匀影响试验结果