Jinneng Holding Equipment Manufacturing Group Zhaozhuang No.2 Well

针对赵庄二号井2309工作面顺槽顶板砂质泥岩厚度大、顶板不稳定情况，通过地应力测试得到了围岩地应力分布情况，结合顶板岩性变化对顺槽支护设计进行了优化。现场试验表明，2309工作面顺槽常规区域顶板最大下沉量为85 mm、构造区域顶板最大下沉量为289 mm，下沉量均在控制范围之内，顶板未出现严重下沉、掉矸情况，支护方案合理可靠。

In view of the large thickness of sandy mudstone and unstable roof in the channel roof of the 2309 working face of Zhaozhuang No.2 well, the distribution conditions of surrounding rock crustal stress is obtained through crustal stress test, and the channel support design is optimized in combination with the changes in roof lithology. The on-site test shows that the maximum subsidence amount of the roof in the conventional area of the 2309 working face channel is 85 mm, and the maximum subsidence amount of the roof in the structural area is 289 mm, the subsidence amount is all within the control range, there is no serious subsidence or debris falling situation on the roof, and the support scheme is reasonable and reliable.

1 工作面概况
2 围岩地应力测试
3 顺槽顶板支护设计优化
3.1 原顺槽顶板支护方式
3.2 顺槽顶板支护方式优化
1）常规区域顺槽顶板支护优化
2）构造区域顺槽顶板支护优化
3.3 支护效果模拟分析
4 现场试验效果
5 结论

张亚飞.2309工作面顺槽巷道顶板支护优化研究[J].山东煤炭科技,2023,41(07):78-80.