|
|
|
| Analysis and application of grouting reinforcement technology for coal seam floor of No.50601 face in Tianan Mine |
| Dong Yueqing |
| Yangquan Coal Industry Group Tianan Coal Mine Co., Ltd., Xinzhou 035100， China |
|
|
|
|
Abstract The mining of No.50601 face in Tianan Mine was threatened by the water of upper Majiagou Formation limestone karst confined aquifer on the floor. In order to realize the safe mining of the working face, the geological and hydrogeological conditions of No.50601 face were analyzed. 83 drilling holes were arranged in the return air roadway and the belt roadway to carry out grouting reinforcement within 15 m of the top of the upper Majiagou Formation limestone aquifer. The sum of water volume of all drilling holes was 642 m3/h, and a total of 875.3 t of cement was injected. Finally, the safe mining of the working face was realized, which provided experience for the prevention and control of confined aquifer water in coal seam floor.
|
|
|
|
|
|
| [ 1 ] 虎维岳，田 干. 我国煤矿水害类型及其防治对策[ J ]. 煤炭科学技术，2010，38（ 1 ）：92 - 96.
[ 2 ] 靳德武，刘英锋，刘再斌，等. 煤矿重大突水灾害防治技术研究新进展[ J ]. 煤炭科学技术，2013，41（ 1 ）：25 - 29.
[ 3 ] 陈江峰，黄玉峰，熊法政. 承压水导升过程中微裂隙扩张分析[ J ]. 地质与勘探，2017，53（ 1 ）：157 - 163.
[ 4 ] 曾一凡，孟世豪，吕 扬，等. 基于矿井安全与生态水资源保护等多目标约束的超前疏放水技术[ J ]. 煤炭学报，2022，47（ 8 ）：3 091 - 3 100.
[ 5 ] 许延春，李江华，刘白宙. 焦作矿区煤层底板注浆加固工作面突水原因与防治[ J ]. 煤田地质与勘探，2014（ 4 ）：50 - 54.
[ 6 ] 张 峰. 承压水上开采煤层底板裂隙时空演化规律研究[ D ]. 安徽：安徽理工大学，2014. |
|
|
|
