贵州省腾龙煤矿溃水溃矸事故形成机制分析  

Analysis on the Formation Mechanism of Water and Gangue Collapse Accidents in Tenglong Coal Mine in Guizhou Province

作　　者：郑纲 ZHENG Gang(CCTEG Xi’an Research Institute(Group)Co.,Ltd.,Xi’an,Shaanxi 710077;State Key Laboratory of Coal Mine Disaster Prevention and Control,Xi’an,Shaanxi 710077;Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard,Xi’an,Shaanxi 710077)

机构地区：[1]中煤科工西安研究院(集团)有限公司,陕西西安710077 [2]煤矿灾害防控全国重点实验室,陕西西安710077 [3]陕西省煤矿水害防治技术重点实验室,陕西西安710077

出　　处：《中国煤炭地质》2024年第3期43-46,5,共5页Coal Geology of China

基　　金：中煤科工集团西安研究院有限公司科技创新基金项目“西部侏罗系煤层顶板砂岩层预裂注浆技术开发”(2021XAYKF02)。

摘　　要：腾龙煤矿10903工作面发生了离层水导致的溃水溃矸事故,通过事故现场、涌水情况、溃入物质及支护变化进行了事故类别判断。为研究溃水溃矸的形成机理,通过分析工作面顶板地质结构及含水层特征,阐明了工作面发育离层水的地质条件;基于采场顶板覆岩组成、离层相似模拟试验,指出煤层上部的长兴组灰岩是控制覆岩形成离层空间亚关键层,长兴灰岩水是离层水的主要补给水源。分析研究了事故发生前工作面迎头构造发育、采掘及顶板支护变化,指出离层水发育、断层破坏及支护缺陷导致顶板碎裂岩体架前切冒,形成了溃水溃矸。10903 working face of Tenglong coal mine experienced a water and gangue collapse accident caused by abscission layer layer water.The accident category was determined based on the accident site,water inflow situation,collapse materials,and support changes.To study the formation mechanism of water and gangue collapse,the geological conditions for the development of abscission layer layer water in the working face were elucidated by analyzing the geological structure and aquifer characteristics of the roof of the working face;Based on the simulation test of the composition and separation of the overlying rock in the mining area,it is pointed out that the Changxing Formation limestone in the upper part of the coal seam is a sub key layer controlling the formation of abscission layer space in the overlying rock,and the Changxing limestone water is the main source of supply for abscission layer water.Analysis and research were conducted on the development of the frontal structure of the working face,mining,and changes in roof support before the accident occurred.It was pointed out that the development of detachment water,fault failure,and support defects led to the front cutting of the fractured rock frame of the roof,resulting in water and gangue collapse.

关 键 词：煤矿水防治 溃水溃矸 事故分析 离层水 

分 类 号：TD745[矿业工程—矿井通风与安全]