多伦协鑫煤矿一采区延伸开采可行性分析

Feasibility Analysis of Extending Mining of 1^(st) Mining Zone in Duolun Xiexin Colliery

为了安全合理地解放多伦协鑫煤矿一采区含水层下压煤及缓解工作面接续紧张的状况,运用地质勘查、实验室实验以及理论分析等方法论证了二采区变防水煤岩柱为防砂煤岩柱综放开采的可行性,从而实现一采区向二采区的延伸开采。通过现场实测、相似模拟、数值模拟以及经验公式的方法对"两带"高度进行计算比较,确定经验公式法更为安全合理,最后选择合理公式反算各区域的最大采高,为实现一采区向二采区延伸并解放大量含水层压煤提供了依据,为煤矿生产带来显著经济效益。

In order to free coal resource of l^st mining zone under aquifer and remit mining and driving tense state in Duolun Xiexin Col- liery, applying geological survey, laboratory experiment and theoretical analysis, the feasibility of full-mechanized caving mining by transferring waterproof pillar to sandproof pillar was proved and extending mining from l^st mining zone to 2^nd mining zone was real- ized. By comparison of ＂ two-zone＂ height with site survey, analogue simulation, numerical simulation and empirical formula calcula- tion, it was believed that empirical formula was most rational method. Selecting rational formula to repeatedly calculate largest mining height of every section, reference was provided for extending mining fromlst mining zone to 2^nd mining zone and freeing large amount coal resource under aquifer and prominent economic profit was made.