|
|
|
| Control technology of roadway floor heave in soft rock large fault area |
| Jiao Yunfei |
| Chengzhuang Mine, Jincheng Lanyan Coal Industry Corporation Ltd., Jincheng 048000, China |
|
|
|
|
Abstract In order to solve the problems of large deformation of surrounding rock and difficult control of floor heave in the second panel of No. 15 coal seam of Chengzhuang Mine, through the investigation of geological conditions and analysis of shale composition in the floor, it was concluded that the multi-layer dirt band in the side of the roadway led to the development of joint surface, and the high content of expansive minerals in the shale in the floor led to the violent floor heave of the roadway. The paper put forward the technology of pre grouting reinforcement of floor and reinforcement of anchor cable. The field monitoring showed that the floor heave of roadway was effectively controlled after the reinforcement of roadway, and the amount of floor heave was basically controlled at about 20 mm, which ensured the stability of surrounding rock of roadway in panel area.
|
|
|
|
|
|
| [ 1 ] 杨本生，耿学良，孙利辉，等. 五阳矿厚煤层巷道底鼓机制及控制研究[ J ]. 采矿与安全工程学报，2012，29（ 1 ）：8 - 13.
[ 2 ] 姜耀东，赵毅鑫，刘文岗，等. 深部开采中巷道底鼓问题的研究[ J ]. 岩石力学与工程学报，2004（ 14 ）：2 396 - 2 401.
[ 3 ] 陆银龙，王连国，张 蓓，等. 软岩巷道锚注支护时机优化研究[ J ]. 岩土力学，2012，33（ 5 ）：1 395 - 1 401.
[ 4 ] 王连国，陆银龙，黄耀光，等. 深部软岩巷道深-浅耦合全断面锚注支护研究[ J ]. 中国矿业大学学报，2016，45（ 1 ）：11 - 18.
[ 5 ] 雷尹嘉， 杨桐茂， 赵 勇. 丰汇煤矿巷道底鼓成因及控制技术[ J ]. 煤炭技术， 2017， 36（ 11 ）：69 - 71.
[ 6 ] 闫孝斌. 浅谈深部软岩巷道底鼓治理技术的应用[ J ]. 江西煤炭科技，2017（ 3 ）：53 - 55.
[ 7 ] 关建军，刘永战. 高应力煤层顶板巷道底鼓治理技术浅析[ J ]. 内蒙古煤炭经济，2017（ 9 ）：112 - 113. |
|
|
|
