摘要
山浪煤矿5#上煤层属浅埋风氧化煤层,现行巷道主要采用架棚支护方式,存在支护成本高、形式单一、劳动强度大等问题,故以5上-3041巷为背景,通过数值模拟、理论计算、矿压监测等手段,进行锚网索支护方案的设计及优化,分析支护方案的适应性,监测掘巷阶段矿压规律,结果表明:顶底板最大相对移近量约为70 mm,最大离层值约为30 mm,围岩稳定性良好,为锚网索支护在该矿的推广使用提供理论依据。
Aiming at the problems of high support cost,single form and high labor intensity of scaffolding support in No.5 upper coal seam in shallowly-buried wind oxidized zone of Shanlang Colliery,the paper proposes the bolt-mesh-cable support scheme through numerical simulation,theoretical calculation,mine pressure monitoring,whose field practice shows that surrounding rock can remain stable with the maximum relative convergence of 70 mm in the roof and floor is about 70 mm and the maximum separation value of 30 mm,providing a theoretical basis for the popularization and application of bolt-mesh-cable support in the mine.
作者
宋飞
Song Fei(Huozhou Coal&Electricity Co.,Shanxi Coking Coal Group Co.,Ltd.,Huozhou,Shanxi 031400)
出处
《江西煤炭科技》
2023年第2期112-115,共4页
Jiangxi Coal Science & Technology
关键词
回采巷道
锚网索支护
数值模拟
厚煤层
浅埋风氧化带
gateway
bolt-mesh-cable support
numerical simulation
thick coal seam
shallowly-buried wind oxidation zone
