Academic Center

All Issues
Latest Issue
Most Download Articles
Most Read Articles
Full Text Download
2016 Issue 11

Study on site measurement of surface movement law under shallow depth coal and vertically repeated mining

Author:

Chen Pan Gu Shuancheng Zhang Youzhen

Author Unit:

Xi'an University of Science and Technology Xi'an Research Institute Company Limited ,China Coal Technology and Engineering Group

Key Words:

surface movement;shallow depth seam; repeated mining; contiguous seams; goaf;
  • Abstract
  • Paper Chart
  • Related Articles
  • Citation Format
In order to study the diference between the surace movement law under repeated mining and the surface movement law of the conventional coal mining face,with the site measurements of the surface movement law of No.N1200 cal mining face in Shenmu Ningtiaota Mine ofShaanxi Coal ndustry Group,the paper compared the differences of the surface movement parameters for the overburden strata with no goaf andgoaf above the coal mining face.The related strata movement theory was applied to explain the causes of the diferences existed in the surface movement law under repeated mining.The results showed that the surface subsidence coficient of coal mining face under repeated mining was 0.877,the advance influence angle was 49.4 ,he comprehensive movement angle was 60' and the ofiset distance at a turning point was 12.5 m.incomparison with the conventional coal mining face under the similar conditon,the surface subsidence coeficient under repeated mining infuences was higher.T'he advance influence angle,movement angle and ofiset distance at a turning point were low and the horzontal movement c.eficents were same basically.
No Content Yet
No.05
May 15th,2022

Contact Us

  • All Rights of Website Desige Reserved©《COAL SCIENCE AND TECHNOLOGY》Editorial Department
  • 京ICP备05086979号-19

  • Address:8th Floor, Coal Building, District 13, Heping Street, Chaoyang District, Beijing:Ad & Finance Department(Room 1204),Editorial Department(Room 811)
  • Telephone:010-87986431(Ad Consult)
  • Mailbox: mtkxjs@vip.163.com