Chen Guang-bo

Shandong University of Science and Technology

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Zhongcheng Qin

Shandong University of Science and Technology

Tan Li

Jiangxi University of Finance and Economics

Bin Cao

Zhejiang University of Technology

Yuteng Liu

University of Chinese Academy of Sciences

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Shandong University of Science and Technology

Beijing Institute of Technology

China Coal Research Institute (China)

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Jiangxi University of Finance and Economics

Inner Mongolia University of Science and Technology

Beijing Technology and Business University

Mongolian University of Science and Technology

National University of Science and Technology

Mining Institute

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Karst Development Geological Characteristics in South Piedmont of Qinling Mountain and the Construction Measures

Exploration Engineering(Rock & Soil Drilling and Tunneling) (2009)

Chen Guang-bo

Based on the geological exploration in the first and second railways of Xi'an to Ankang,the paper discussed the geological characteristics of karst phenomenon in the construction in the marine deposit extremely thick carbonate rock layer of carboniferous,Devonian and cambrian-ordovician,which developed in the hinterland of southern Qinling.According to the karst development degree and configuration revealed in the existing engineering construction,the karst was divided into vertical seepage karst zone and undersurface flow karst zone;and on this basis,it was put forward that different construction measures was applied for each karst type and part.

Devonian

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A New Bumping Danger Warning Method Based on the Growth Trend of Drilling Cutting Quantity

Zhongcheng Qin Tan Li Chen Guang-bo Bin Cao Yuteng Liu

The method of drilling bits is a common method to predict the rockburst.This method establishes a quantitative relationship between the drilling cutting quantity and the stress in coal body.But in the process of mining, the common early warning indicator often has some disadvantages such as limitation and hysteretic nature due to some limiting factors.Taking the method of drilling bits as the theoretical basis and the No.3302 coalface of Xingcun coal mine as the engineering background, this paper proposes a new warning method and the new early warning indicator to make up for the limitations and hysteretic nature.The new early warning indicator is obtained by comparing the drilling cutting quantity before and after mining in the depth range of coal bodies with impact risk.Based on the variation trend of drilling cutting quantity and drilling rate warning indicator, the new real-time warning method is proposed.This method can be used to analyze the danger of rockburst in potential danger areas, which could be valuable in the design of rockburst resistant measures in deep buried construction. 1

Bumping

10.2991/coal-18.2018.6

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