摘要
以焦作矿区8个发生突水的底板注浆加固工作面为背景,依据底板钻孔涌水量对工作面进行了富水性分区,研究了工作面底板注浆加固体的空间分布特征,分析了底板突水的机理。研究结果表明:底板突水主要发生在富水区,并受断层带、基本顶来压等多个因素影响。注浆加固有效地降低了大水工作面的突水危险,表明对工作面的富水区、断层带、基本顶来压等特殊位置加大注浆工程量是十分必要的。
On the basis of water inflow of floor boreholes in 8 reinforcing mining faces with floor grunting against water-burst, space distribution characteristics of reinforcement body by floor grunting were researched and floor water-burst mechanism was ana- lyzed. Results showed that floor water-burst occurred mainly in watery area and was influenced by faults, basic roof weighting. Grunting reinforcement could effectively reduce water-burst danger of mining face threatened by water, which showed that it was very necessary that adding grunting amount in watery area, fault zone and places of basic roof weighting.
出处
《煤矿开采》
北大核心
2013年第3期110-113,88,共5页
Coal Mining Technology
基金
国家重点基础研究发展计划(973计划)资助项目:矿井突水的动力学特征及控制因素(2007CB209402)
关键词
底板注浆加固
富水区
底板突水
剪切破坏带
floor reinforcement with grunting
watery area
floor water-burst
shear failure zone