|
|
|
| Safety evaluation of mining under pressure in Majialiang Mine |
| Bai Yunfei |
| Jinneng Holdings Coal Industry Group Zheneng Majialiang Coal Industry Co., Ltd.,Shuozhou 036000, China |
|
|
|
|
Abstract In order to evaluate the influence of the Ordovician karst water on the coal seam in the Majialiang mine field, combined with the water filling conditions and water filling channels of the water-filled aquifer, based on the analysis of the geological and hydrogeological conditions of the mine, the characteristics of the aquiclude in the coal seam floor were analyzed, and the depth of the floor disturbance failure, the thickness of the effective aquiclude and the possible water-conducting channel were introduced. Three different methods, such as the elevation comparison method, the water inrush coefficient method and the Si 's formula method, were used to evaluate the risk of water inrush in the mining of the main coal seam under pressure. The safety of the mining of the coal seam floor under pressure was comprehensively evaluated, and the coal seam was reasonably divided, and the method of identifying the Ordovician limestone water inrush was proposed. Provide technical guidance for mine water prevention and control work to ensure mine safety production.
|
|
|
|
|
|
| [ 1 ] 杨士春. 干河煤矿奥灰水带压开采安全性评价[ J ]. 江西煤炭科技，2021（ 2 ）：176 - 179.
[ 2 ] 弓远程. 工作面带压开采安全评价及防治水技术实践[ J ]. 江西煤炭科技，2020（ 2 ）：193 - 196.
[ 3 ] 牛永刚，赵世文，牛记远. 煤层底板承压水体上带压开采的分析研究[ J ]. 煤炭与化工，2015，38（ 3 ）：76 - 78.
[ 4 ] 郭恩珍. 煤矿奥灰带压开采主要突水因素分析及安全评价[ J ]. 山东煤炭科技，2017（ 6 ）：151 - 153. |
|
|
|
