针对王楼煤矿由于受工业广场沉降等原因影响,原有近井点破坏的情况,利用GPS和全站仪联合测量的方法对井筒十字线中线点进行恢复.本文介绍了王楼煤矿在近井点、高程基点和井筒十字中心线标定工程中使用的方法,可为类似工作提供参考.
Taking 1009 auxiliary haulage chute of Huangling No.1 Mine as the test roadway, the method of introducing advanced tunneling equipment, improving tunneling technology, optimizing support scheme and gas prevention scheme is adopted to improve the tunneling efficiency. The monitoring of surrounding rock and gas conditions in the roadway shows that the surrounding rock of the roadway is basically stable and the gas emission is within the safe value under the condition that the tunneling efficiency is greatly improved. The application of rapid tunneling technology in the coal roadway of Huangling No. 1 Mine has achieved success.
为保证煤炭安全开采,预防事故发生,通过建设灾害智能分析管控系统,实现对矿井瓦斯、顶板、水文、火灾、粉尘等主要灾害进行全方位实时监测及预控,对矿井多种监测数据统一传输、采集和分类存储,实现灾害数据在控制层的深度融合、快速联动,为建设智慧矿山提供安全保障和技术支撑.
为解决浅埋深房柱采区下31203 综采面过上覆煤柱顶板控制难题,通过逐步破坏理论计算,分析判断房柱和集中煤柱在无外力作用下能保持长期稳定,进而得出上覆集中煤柱超前失稳可抑制下方工作面顶板大幅下沉结论,并进行了数值模拟验证.在此基础上,提出采前优化工作面设计、采时预测预报、采时房柱采区下常规及集中煤柱下专项控顶技术,实现工作面安全高效回采.
陈蛮庄煤矿为千米埋深单翼开采矿井,由于部分巷道风速超限,通风能力不足,矿井通风网络等存在问题,不能满足安全生产需求,需要进一步优化.通过科学选用主要通风机等进行优化,解决了西翼轨道大巷进风困难、风速超限等问题.矿井总进风量增加了2548 m3/min,实现了矿井通风系统安全可靠运行.
