Experimental research on mechanism and controlling of floor heave in deep soft rock roadway

被引：0

作者：

Sun L. ^{[1
,2
,3
]}

Yang B. ^{[2
,3
]}

Sun C. ^{[4
]}

Li X. ^{[5
]}

Wang Z. ^{[6
]}

机构：

[1] Key Laboratory of Safety and High-efficiency Coal Mining, Ministry of Education, Anhui University of Science and Technology, Huainan, 232001, Anhui

[2] College of Mining and Geomatics Engineering, Hebei University of Engineering, Handan, 056038, Hebei

[3] Collaborative Innovation Center of the Comprehensive Development and Utilization of Coal Resource, Hebei Province, Handan, 056038, Hebei

[4] Jizhong Energy Handan MIG, Handan, 056002, Hebei

[5] Ping'an Insurance (Group) Co of China Ltd, Hohhot, 010010, Inner Mongolia

[6] Tao'er Coal Mine, Jizhong Energy Handan MIG, Handan, 056105, Hebei

来源：

Caikuang yu Anquan Gongcheng Xuebao/Journal of Mining and Safety Engineering | 2017年 / 34卷 / 02期

关键词：

Cable beam; Deep mine; Floor heave; Shallow and deep part grouting; Soft rock;

D O I：

10.13545/j.cnki.jmse.2017.02.006

中图分类号：

学科分类号：

摘要：

In order to research on mechanism and controlling method of strong floor heave in deep soft rock roadway, with the floor heave of southern main roadway in Handan MIG Tao'er coal mine expansion area as the engineering background, the characteristics and influence factors of strong floor heave in south main roadway were analyzed, the treatment scheme of cable beam+floor grouting was put forward, and the characteristics of floor failure and stress distribution for the two schemes were com pared and analyzed through similar simulation test of original roadway support and floor heave treatment scheme. The results have shown that the factors of strong floor heave include high stress, rock water swelling, and unreasonable supporting structure; shallow floor grouting makes the broken rock mutual cohere and form a whole rock, deep floor grouting fills the deep fractured rock pores, and cable beams anchor the shallow grouting rock mass and the deep grouting rock mass together to limit the floor deformation. The field test has shown that floor deformation is between 38-48 mm, and roadway deformation tends to be stable 30 days after the treatment. The treatment technology of floor heave is suitable for floor reinforcement of deep large section roadway and permanent roadway. © 2017, Editorial Board of Journal of Mining & Safety Engineering. All right reserved.

引用

页码：235 / 242

页数：7

共 16 条

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