胜利煤矿14煤回采工作面防水煤柱留设探究
Technology Wind(2021)
Abstract
胜利煤矿位于牙克石市境内,一采区一水平开采最上部14号煤层,该煤层埋深较浅一般为20.55-104.98m,平均厚度为47.64m,开采过程中存在顶板扰动沟通地表水体的风险,需要留设防水煤柱确保生产安全.本文以矿井以往水文地质资料、专项物探成果报告资料等为基础,结合近几年回采工作面生产过程顶板实际观测数据等相关资料,通过分析研究确定14煤回采工作面防水煤柱留设范围.
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