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| 1 | 地铁引起二次噪声特性及评价量实测与探讨显示文摘针对地铁列车引起的建筑物二次辐射噪声进行了现场试验研究和评价量的探讨分析。从多个角度对试验数据进行了分析,总结了运行列车引起的室内二次辐射噪声特性。从分析频谱宽度、分析时间长度和背景噪声等几个方面研究了影响建筑物室内二次辐射噪声评价量的若干因素,并探讨了不同评价量之间的相关性以及中国现行标准中使用的评价量存在的不足。 | 申道明 张来栋 薛松涛 | 2013 | 土木建筑与环境工程2013，35，4： | 12 |
| 2 | Zonal extraction technology and numerical simulation analysis in open pit coal mine显示文摘In order to enhance coal recovery ratio of open pit coal mines,a new extraction method called zonal mining system for residual coal around the end-walls is presented.The mining system can improve economic benefits by exploiting haulage and ventilation roadways from the exposed position of coal seams by utilizing the existing transportation systems.Moreover,the main mining parameters have also been discussed.The outcome shows that the load on coal seam roof is about 0.307 MPa and the drop step of the coal seam roof about 20.3 m when the thickness of cover and average volume weight are about 120 m and 0.023 MN/m 3 respectively.With the increase of mining height and width,the coal recovery ratio can be improved.However,when recovery ratio is more than 0.85,the average stress on the coal pillar will increase tempestuously,so the recovery ratio should also be controlled to make the coal seam roof safe.Based on the numerical simulation results,it is concluded that the ratio of coal pillar width to height should be more than 1.0 to make sure the coal pillars are steady,and there are only minor displacements on the end-walls. | Chen Yanlong Cai Qingxiang Shang Tao Peng Hongge Zhou Wei Chen Shuzhao | 2012 | International Journal of Mining Science and Technology2012，22，4： | 11 |
| 3 | Time-frequency characteristics of blasting vibration signals measured in milliseconds显示文摘In order to study the time-frequency characteristics of blasting vibration signals, measured in milliseconds, we carried out site blasting vibration tests at an open pit of the Jinduicheng Mine. Based on recorded field data and applying a combination of RSPWVD and wavelet, we analyzed the time-frequency characteristics of recorded field data, summarized the time-frequency characteristics of blasting vibration signals in different frequency bands and present detailed information of blasting vibration signals in milliseconds of high time-frequency resolutions. Because RSPWVD can be seen as of definite physical significance to signal energy distribution in time and frequency domains, we studied the energy distribution of blasting vibration signals for various milliseconds intervals from a perspective of energy distribution. The results indicate that the effect of milliseconds intervals on time-frequency characteristics of blasting vibration signals is significant; the length of delay time directly affects the energy distribution of blasting vibration signals as well as the duration of energy in frequency bands. | Zhao Mingsheng ZhangJianhua Yi Changping | 2011 | Mining Science and Technology2011，21，3： | 9 |
| 4 | Evaluation of human response to blasting vibration from excavation of a large scale rock slope:A case study显示文摘Ground vibration, as the most critical public hazard of blasting, has received much attention from the community. Many countries established national standards to suppress vibration impact on structures, but a world-accepted blasting vibration criterion on human safety is still missing. In order to evaluate human response to the vibration from blasting excavation of a large-scale rock slope in China, this study aims to suggest a revised criterion. The vibration frequency was introduced to improve the existing single-factor(peak particle velocity) standard recommended by the United States Bureau of Mines(USBM). The feasibility of the new criterion was checked based on field vibration monitoring and investigation of human reactions. Moreover, the air overpressure or blast effects on human beings have also been discussed. The result indicates that the entire zone of influence can be divided into three subzones: severe-annoyance, light-annoyance and perception zone according to the revised safety standard. Both the construction company and local residents have provided positive comments on this influence degree assessment, which indicates that the presented criterion is suitable for evaluating human response to nearby blasts. Nevertheless, this specific criterion needs more field tests and verifications before it can | Yan Peng Lu Wenbo Zhang Jing Zou Yujun Chen Ming | 2017 | Earthquake Engineering and Engineering Vibration2017，16，2： | 7 |
| 5 | Simultaneous investigation of blast induced ground vibration and airblast effects on safety level of structures and human in surface blasting显示文摘The significance of studying, monitoring and predicting blast induced vibration and noise level in mining and civil activities is justified in the capability of imposing damages, sense of uncertainty due to negative psychological impacts on involved personnel and also judicial complaints of local inhabitants in the nearby area. This paper presents achieved results during an investigation carried out at Sungun Copper Mine, Iran. Besides, the research also studied the significance of blast induced ground vibration and airblast on safety aspects of nearby structures, potential risks, frequency analysis, and human response.According to the United States Bureau of Mines(USBM) standard, the attenuation equations were developed using field records. A general frequency analysis and risk evaluation revealed that: 94% of generated frequencies are less than 14 Hz which is within the natural frequency of structures that increases risk of damage. At the end, studies of human response showed destructive effects of the phenomena by ranging between 2.54 and 25.40 mm/s for ground vibrations and by the average value of 110 dB for noise levels which could increase sense of uncertainty among involved employees. | Faramarzi Farhad Ebrahimi Farsangi Mohammad Ali Mansouri Hamid | 2014 | International Journal of Mining Science and Technology2014，24，5： | 7 |
| 6 | Prediction of blast-induced ground vibrations via genetic programming显示文摘Excessive ground vibrations, due to blasting, can cause severe damages to the nearby area. Hence, the blast-induced ground vibration prediction is an essential tool for both evaluating and controlling the adverse consequences of blasting. Since there are several effective variables on ground vibrations that have highly nonlinear interactions, no comprehensive model of the blast-induced vibrations are available. In this study, the genetic expression programming technique was employed for prediction of the frequency of the adjacent ground vibrations. Nine input variables were used for prediction of the vibration frequencies at different distances from the blasting face. A high coefficient of determination with low mean absolute percentage error(MAPE) was achieved that demonstrated the suitability of the algorithm in this case. The proposed model outperformed an artificial neural network model that was proposed by other authors for the same dataset. | Dindarloo Saeid R. | 2015 | International Journal of Mining Science and Technology2015，25，6： | 4 |
| 7 | Complexity analysis of blast-induced vibrations in underground mining: A case study显示文摘Blasting in geological bodies is an industrial process acting in an environment characterized by high uncertainties (natural joints, faults, voids, abrupt structural changes), which are transposed into the process parameters (e.g. energetic transfer to rock mass, hole deviations, misfires, vibrations, fly-rock, etc.). The approach to this problem searching for the 'optimum' result can be ineffective. The geological environment is marked out by too many uncertainties, to have an 'optimum' suitable to different applications. Researching for 'Robustness' in a blast design gives rise to much more efficiency. Robustness is the capability of the system to behave constantly under varying conditions, without leading to unexpected results. Since the geology varies from site to site, setting a robust method can grant better results in varying environments, lowering the costs and increasing benefits and safety. Complexity Analysis (C.A.) is an innovative approach to systems. C.A. allows analyzing the Complexity of the Blast System and the criticality of each variable (drilling, charging and initiation parameters). The lower is the complexity, the more robust is the system, and the lower is the possibility of unexpected results. The paper presents the results obtained thanks to the C.A. approach in an underground gypsum quarry (Italy), exploited by conventional rooms and pillars method by drilling and blasting. The application of C.A. led to a reliable solution to reduce the charge per delay, hence reducing the impact of ground vibration on the surrounding structures. The analysis of the correlation degree between the variables allowed recognizing empirical laws as well. | Cardu Marilena Dompieri Mauricio Seccatore Jacopo | 2012 | International Journal of Mining Science and Technology2012，22，1： | 3 |
| 8 | 降低炮孔孔底空气间隔装药的爆破震动显示文摘针对爆破作业中因岩体结构和构造的差异。爆破地震传递的能量不同,为了减少爆破地震在地下岩体传播过程中的爆破地震效应。通过理论研究以及模型试验。分析了爆破对炮孔子L壁的应力应变作用过程,并得出孔底空气间隔装药长度与震动持续时间、震动峰值的关系。同时结合现场浅孔、深孔爆破中炮孔空气间隔层不同间隔方式的地震效应对比,综合比较震动幅值、震动频率和震动持续时间等因素。证明不同空气间隔方式的间隔装药均能降低爆破地震效应。减小前冲、后冲。孔底空气间隔装药在3种装药方式中降震效果都较好,其降震可达10%,25%。其中,子L底间隔装药结构的爆破地震效应最小,其次为孔上部间隔装药。炮孑L中部间隔装药地震效应最大。 | 罗尧东 罗冰 | 2013 | 科技导报2013，31，25： | 1 |
| 9 | 模拟声源的小尺度爆破模型研制显示文摘研制了模拟声源的小尺度爆破模型。具体过程为:利用10 g 2号岩石乳化炸药开展现场爆炸试验,获得爆炸噪声的声压及快速傅里叶变换谱线(FFT);将导爆管、鞭炮、发令枪3种模拟声源激发噪声的声压及FFT比对,进行起爆工况贴合度分析,提出导爆管作为实验用模拟声源;开展高帧数高速摄像实验,获得导爆管爆速与爆轰波移动距离关系,拟合回归分析,确定导爆管作为模拟声源的标准长度为36.29~100 cm。应用几何和材料相似原理,设计基于模拟声源的小尺度爆破模型。应用效果表明,模拟声源的小尺度爆破模型可操作性强,实验数据良好,安全性高。 | 闫莎莎 王海亮 于福 赵琛 吕莎莎 | 2021 | 实验室研究与探索2021，40，12： | 0 |
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