Study on the Observation Data of Surface Movements due to Wide Strips Mining in Deep-lying Seams
In order to improve production efficiency in strip mining and protect the ground surface configuration and structure, in the paper, the surface subsidence rules of wide strip mining in deep-lying seams were analyzed and studied through the observation data gained from mining one wide strip in 25 mining section of Hemei 9th mine. Main results of study are as follows:①the value of surface subsidence is so small that it only occupies 1/10 amount of full-mining;②the range of influence for surface movement is almost the same with the full-mining, and the basin of surface subsidence is very gentle;③points of inflection always moves according to the different mining degree and leans to coal pillar under utmost non-full extraction;④nonexistence of surface movement active age, delay of surface movement age, nonexistence of advance influence angle are all time influencing factors expression. These rules adapt for mining deep-lying seams under the similar geological conditions, and can instruct the design for coal mining under buildings, railways and water-bodies in deep-lying seams.
observation data wide strips surface movement inflection point time influence factor
GAO Baobin ZHANG Changjuan LI Dehai
School of Civil Engineering and Architecture,Beijing Jiaotong University, Beijing 100044,China School of Mechanical and Power Engineering, Henan Polytechnic University,JiaoZuo 454003,China School of Energy Science and Engineering, Henan Polytechnic University,JiaoZuo 454003,China
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
278-283
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）