赵固二矿高承压水上开采底板突水危险评价及防治技术.docVIP

赵固二矿高承压水上开采底板突水危险评价及防治水技术 彭志涛1，王晓红1,张彦宾2 （1.河南能源化工集团焦煤公司赵固二矿，河南辉县 453633；2.河南理工大学 安全技术培训学院，河南 焦作 454000） 摘要：为保证赵固二矿11011工作面在高承压水上的开采安全，首先根据该矿的地质资料分析了矿井突水的成因；然后通过多种底板突水评价方法（突水系数法和“下三带”理论）综合分析赵固二矿承压水上开采底板突水的危险性；并根据赵固二矿的具体地质条件，提出了超前探测、疏水降压、地质体注浆改造等防治水技术.上述工作为高承压水上开采的防治水提供了经验积累。 关键词：高承压水；突水系数法；“下三带”理论；突水危险性；地质体注浆改造 中图分类号：TD745.2 文献标志码：A 文章编号：1003-0506（2014）-10-0034-04 The water inrush risk assessment and Control Technique with mining above high confined water for Zhaogu No.2 coal mine Peng Zhitao1,Wang Xiaohong1,Zhang Yanbin2 (Zhaogu No.2 coal mine, Jiaozuo Coal Industry Co., Ltd, coal Henan Energy and Chemical Industry Group Co., Ltd, huixian 453633,China; 2.Institute of safety technology training，Henan Polytechnic University，Jiaozuo 454000,China) Abstract: In order to ensure mining safety for the 11011 working face of Zhaogu No.2 coal mine in high pressure water, firstly, the water bursting reason was anglicized based on the geological data. Then through a variety of floor water inrush evaluation method (the water-inrush coefficient method, the theory of “lower three-zones”), floor water inrush risk in high pressure water was estimated. In addition, accord to the specific geological conditions of Zhaogu No.2 coal mine, some water control technologies were putted forward, such as advanced detection, depressurizing and geological body grouting reconstruction. The above work provided the experience accumulation for water prevention and control with mining in high pressure water. Keywords: high pressure water；water inrush coefficient method；the theory of “lower three-zones”；water inrush risk；geological body grouting reconstruction 20世纪60年代初，焦作矿务局矿井突水频繁且突水灾害严重，历史上发生过大小突水事故700余次，其中造成淹井事故14次，直接损失数亿元。因此焦作矿区被认为是全国大水矿区之一。原煤炭部组织有关科研人员对焦作演马庄矿、韩王矿为主的矿井进行了水文地质会战[1]，不仅是为了解决焦作矿务局日益严重的水害问题，也为全国矿井防治水提供技术支持。新世纪以来，随着焦作矿区煤炭资源的逐步枯竭，深部开采已成为现阶段开采的趋势，在大埋深的条件下，针对工作面承压水上开采底板突水危险性的评价及底板突水防治技术研究是很有必要的。 1. 赵固二矿区域水文地质特征 焦作煤田地处太行山复背斜隆起带南段东翼，呈地堑、地垒、掀斜断块等组合形式，以断裂构造为主。其中二1煤层顶板赋存有砂岩，而且底板直接受太原组灰岩的