Advance Search
Study on Failure Law of Cretaceous Overburden Strata Under Conditions of Fully Mechanized Top Coal Caving Mining[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (10).
Citation: Study on Failure Law of Cretaceous Overburden Strata Under Conditions of Fully Mechanized Top Coal Caving Mining[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (10).

Study on Failure Law of Cretaceous Overburden Strata Under Conditions of Fully Mechanized Top Coal Caving Mining

More Information
  • Available Online: April 02, 2023
  • Published Date: October 24, 2011
  • In order to ensure the fully mechanized top coal caving mining face not affected by the Tertiary System Aquifer in the overburden strata, to determine the rational thickness of the left safety coal (rock) pillar shall understand the failure law of the Cretaceous overburden strata under the conditions of the fully mechanized to p coal caving mining.Based on the site measured results of the failure height in the overburden strata and in combination with the lab similar material simulation, the rat io relationship between the failure "two zone" height of the Cretaceous overburden strata and the mining height under the condition of the fully mechanized top coal cavi ng mining was obtained.The failing and mining ratio of 5.61 and the cracking and mining ratio of 12.21 was applied to be the numerical basis of the rational left safety C oal (rock) pillar under the fully mechanized top coal caving mining in the top slice of No.7 seam.In comparison analysis on the related failure data of the overburden stra ta with the similar mining condition in the mine, the paper held that the overburden failure in the Cretaceous strata would have small cracking and mining ratio and the I arge falling and mining ratio features and could meet the failure law of the soft and weak type overburden strata.
  • Related Articles

    [1]LIU Hongtao, LUO Zilong, HAN Zijun, HAN Zhou, CHEN Xiaogang, PENG Jiachen. Study on evolution law of overburden fracture in fully-mechanized top-coal caving face with large mining height in thick coal seam[J]. COAL SCIENCE AND TECHNOLOGY, 2024, 52(3): 1-12. DOI: 10.13199/j.cnki.cst.2022-1926
    [2]Wang Wen Dong Miao Li Huamin Huang Zujun, . Study on water conductivity features of mining cracks in watery overburden strata[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (5).
    [3]Liu Quanming YuLei, . Mine strata behavior law affected by overburden strata structure above fully-mechanized top coal caving mining face in shallow depth seam[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (3).
    [4]Kuang Tiejun. Study on overburden strata movement law at face end of high cutting fully-mechanized top coal caving face in ultra thick seam[J]. COAL SCIENCE AND TECHNOLOGY, 2016, (6).
    [5]Wang Jiachen Zhang Jinwang, . Study on top-coal recovery ratio distribution law of longwall top-coal caving mining in steeply thick coal seam[J]. COAL SCIENCE AND TECHNOLOGY, 2015, (12).
    [6]YANG Peng. Similar Simulation of Mining Cracking Evolution Law for Overburden Strata Above Coal Mining Face[J]. COAL SCIENCE AND TECHNOLOGY, 2014, (8).
    [7]Study on Mine Strata Pressure Law of Fully Mechanized High Cutting Coal Mining Face Under Thick Unconsolidated Overburden Strata[J]. COAL SCIENCE AND TECHNOLOGY, 2013, (5).
    [8]Study on Mine Strata Pressure Law of Wanggeweili Coal Mining Face in Shallow Depth Seam with Different Overburden Strata[J]. COAL SCIENCE AND TECHNOLOGY, 2013, (2).
    [9]Analysis and Study on Falling Down Law of Coal and Rock in High Cutting Fully Mechanized Top Coal Caving Mining[J]. COAL SCIENCE AND TECHNOLOGY, 2013, (1).
    [10]Study on Micro Seismic Monitoring and Measuring Technology in High Cutting Fully Mechanized Top Coal Caving Mining of Deep Mine[J]. COAL SCIENCE AND TECHNOLOGY, 2012, (12).
  • Cited by

    Periodical cited type(1)

    1. 束振宇,徐祥,魏迎春,王安民,王路,刘志飞,陈高建,曹代勇. 不同类型接触变质煤大分子结构差异性研究. 煤炭科学技术. 2023(06): 147-157 . 本站查看

    Other cited types(1)

Catalog

    Article views (545) PDF downloads (0) Cited by(2)
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return