|
|
|
| Application of high water material in gob-side entry retaining of fully mechanized mining face |
| Huang Hua |
| Shanxi Jinshen Energy Co., Ltd, Xinzhou 036500, China |
|
|
|
|
Abstract In view of the problems of complex construction process and poor support effect of the traditional paste concrete filling material in gob-side entry retaining, the technology of high water material support was proposed. Through the analysis of the action mechanism of the roadway side filling body and the calculation of the filling support parameters, the water cement ratio of the high water material, the volume of the filling body and the support strength were determined. The field application results showed that after filling and supporting with high water material, the surrounding rock of the reserved roadway was obviously deformed within 20 ~ 100m from the working face. The maximum displacement of the roof and floor on the side of the solid coal body was 590mm, the maximum displacement of the roof and floor on the side of the filling body was 800mm, and the maximum displacement of the two sides was 560mm; The maximum load carried by the filling body was 10.5 MPa, the deformation of roadway surrounding rock was within the control range, and the strength of the filling body met the maximum load support requirements.
|
|
|
|
|
|
| 1 ] 连雅乐. 沿空留巷技术在煤矿开采中的应用[ J ]. 当代化工研究，2021（ 15 ）：59 - 60.
[ 2 ] 张 强. 煤矿井下沿空留巷技术优化研究[ J ]. 能源与节能，2021（ 8 ）：109 - 110，174.
[ 3 ] 霍和平，任建伟，赵 磊. 贾家沟煤矿6107工作面沿空留巷技术应用[ J ]. 同煤科技，2021（ 4 ）：53 - 56.
[ 4 ] 黄正栋，张东峰，张小强. 沿空留巷巷旁充填材料性能优化研究[ J ]. 煤矿安全，2021，52（ 8 ）：59 - 65，74.
[ 5 ] 杨 勇. 高水充填材料巷旁充填沿空留巷技术应用探讨[ J ]. 能源与节能，2021（ 8 ）：165 - 166，208.
[ 6 ] 洛建军. 新型高水材料在沿空留巷技术中的应用[ J ]. 煤炭科
技，2021，42（ 3 ）：99 - 102.
[ 7 ] 赵昕楠. 高水材料巷旁充填沿空留巷技术应用研究[ J ]. 煤炭与化工，2021，44（ 2 ）：62 - 65．
[ 8 ] 苗 鹏. 综采工作面高水充填沿空留巷技术应用实践[ J ]. 能源技术与管理，2020，45（ 3 ）：92 - 94. |
|
|
|
