霍洛湾煤矿22101工作面顶板两带发育规律  

Developmental rules of the hydraulic fractured zone of working face 22101 in Huoluowan coal mine

作　　者：王世东[1] 谢伟 罗利卜 

机构地区：[1]煤炭科学研究总院西安研究院,陕西西安710054 [2]神东天隆集团有限责任公司,陕西榆林719315

出　　处：《煤田地质与勘探》2009年第3期38-40,共3页Coal Geology & Exploration

基　　金："十一五"国家科技支撑计划重点项目(2007BAK24B01)

摘　　要：在详细分析霍洛湾煤矿水文地质条件基础上,根据2-2煤层上覆不同岩层的岩石力学参数建立了工作面回采过程中覆岩变形与破坏特征的数值模拟模型,研究了工作面回采过程中顶板覆岩在不同来压阶段导水裂隙带和垮落带的发育高度;通过对钻孔冲洗液漏失量的现场观测,进行了"两带"发育高度的探测。将数值模拟结果及现场观测资料对比分析,确定22101工作面的导水裂隙带高度为33.6～37.8m,垮落带高度约9.6m。这为评价研究区水体下开采可行性和水体下开采防水煤柱的设计提供了科学依据。Based on the hydrogeological conditions of Huoluowan coal mine, and combinated with the different rock mechanical parameters of overburden strata of coalbed 2-2, this paper established a numerical model which simulated characteristics of overburden rock deformation and failure,and studied the development height of fissure zone and caving height of top wall at different stages of flighest mine pressure. Then according to the monitoring data of consumption of wash liquid at field experiment,the real growth height data were gotten. Contrasting the simulated results and the observed ones, the paper summarized the development height of hydraulic fractured zone between 33.6 and 37.8 m for working faces 22101, and the caving height was 9.6 re.Thus this was helpful to provide the scientific basis for evaluating the feasibility of mining under water and designing water prevention coal pillar for the study area.

关 键 词：霍洛湾煤矿 导水裂隙带 防水煤柱 

分 类 号：TD741[矿业工程—矿井通风与安全]