不连沟煤矿F6219综放工作面支架适应性分析  

Support adaptability analysis in No.F6219 fully mechanized caving face of Buliangou Mine

作　　者：彭杨皓 徐金陵 李昂 樊郑如 李永胜 Peng Yanghao;Xu Jinling;Li Ang;Fan Zhengru;Li Yongsheng(Huadian Coal Industry Group Co.,Ltd.,Beijing 100035,China;Digital Intelligence Technology Co.,Ltd.Of Huadian Coal Industry Group,Beijing 102488,China;Inner Mongolia Mengtai Buliangou Coal Industry Co.,Ltd.,Zhungeer Banner 017100,China)

机构地区：[1]华电煤业集团有限公司,北京100035 [2]华电煤业集团数智技术有限公司,北京102488 [3]内蒙古蒙泰不连沟煤业有限责任公司,内蒙古准格尔旗017100

出　　处：《煤炭与化工》2024年第9期14-23,27,共11页Coal and Chemical Industry

基　　金：中国华电集团有限公司科技项目(CHDKJ21-02-16)。

摘　　要：不连沟煤矿F6219综放工作面以往使用低阻力液压支架的综放工作面来压时,常伴随有立柱急速下缩、安全阀大面积开启等强矿压显现,存在安全隐患。本文以不连沟煤矿F6219综放工作面为工程背景,通过实测数据对工作面支架初撑力、安全阀开启情况、工作阻力频率及支架不保压不平衡等进行支架适应性分析。结果表明:F6219综放工作面支架初撑力平均值5762~7777 kN,初撑力合格率仅为0~28.6%;支架安全阀开启率为3.1%~53.1%,平均30.3%,开启率偏高,安全阀开启比例最大78.9%,平均36.6%,开启比例偏高;支架工况不佳,后立柱接顶不实,支架处于低阻力区时,占比达44.43%;此外,支架不保压和不平衡现象较多。通过对不连沟煤矿支架适应性进行分析,得出低阻力支架控顶工作面存在大面积切顶压架危险,为保障生产安全,提出工程建议。In the past,No.F6219 fully mechanized caving face in the Buliangou Mine used low resistance hydraulic supports to press the fully mechanized mining face,which often resulted in strong mining pressure such as rapid column contraction and large-scale opening of safety valves,posing safety hazards to the safety production of the working face.No.F6219 fully mechanized caving face was taekng as the engineering background,the adaptability analysis of the support was carried out on the initial support force,the opening of the safety valve,the frequency of working resistance,and the imbalance of support pressure through measured data.It was concluded that there was a risk of large-scale roof cutting and pressure on the low resistance support roof control working face.The results showed that the average initial support force was 5762-7777kN,and the qualification rate of the initial support force was only 0-28.6%;The opening rate of the bracket safety valve was 3.1%~53.1%,with an average of 30.3%,indicating a high opening rate.The maximum opening ratio of the safety valve was 78.9%,with an average of 36.6%,indicating a high opening ratio;The working condition of the support was not good,the top of the rear column was not real,and the support was in the low resistance area,accounting for 44.43%;In addition,there were many instances of bracket instability and imbalance.Through the analysis of the adaptability of the support in Buliangou Mine,it was concluded that there was a danger of large area roof cutting and support pressing in the roof control working face of low resistance support.In order to ensure the safety of production,engineering suggestions were put forward.

关 键 词：支架适应性 综放开采 实测研究 支架工况 

分 类 号：TD323[矿业工程—矿井建设]