Shenhua Xinjie Energy Co. , Ltd.
CCTEG Wuhan Engineering Company
School of Energy and Mining Engineering, China University of Mining and Technology-Beijing

针对新街台格庙矿区立体煤-气资源矿权重叠导致资源难以统筹规划开发的现状,通过调研检索、理论分析、数值模拟等方法研究了矿权立体重叠区的“煤-气”协同开采模式,研究结果表明“煤-气”交叉开采的不利情景主要分为井下煤层腐蚀气井管、采掘过废弃井、地面沉降管线破损和其他经济技术影响等方面,开采模式可按照时间与空间的关系归纳为先气后煤、先煤后气和协同共采交叉模式等,并据此给出了矿区天然气走廊规划布置方案。“煤-气”协同开采走廊模式下走廊保护煤柱的回收将产生孤岛工作面,孤岛工作面应力分布特征结合矿区的深部开采条件将进一步诱发动力灾害,“短-短-长”工作面布置在最后超长工作面回收时的应力调控有利于弱化煤岩动力灾害。

The overlapping of coal and gas resource mining rights in the Xinjie Taigemiao Mine Area has made it difficult to coordinate the planning and development of resources. Based on this, we investigate the coal-gas collaborative mining mode in the three-dimensional overlapping area of mining rights through methods such as research retrieval, theoretical analysis, and numerical simulation. The research shows that: the adverse scenarios of coal-gas cross mining mainly include corrosion of coal seams in underground gas well pipes, mining through abandoned wells, damage to pipelines caused by surface settlement, and other economic and technical impacts. The mining mode can be classified into gas-coal sequent mining, coal-gas sequent mining, and collaborative cross-mining modes based on the relationship between time and space. We provide targeted planning and layout for the natural gas corridor in the mining area. Under the coal-gas collaborative mining corridor mode, the recovery of protective coal pillars for the corridor will create isolated working faces. The stress distribution characteristics of isolated working faces combined with the deep mining conditions in the mining area will further induce the dynamic disasters. The arrangement of short-short-long working faces in the last stage of super-long working face recovery is conducive to stress regulation to weaken coal and rock dynamic disasters.

中煤科工武汉设计研究院创新基金项目(ZZYF202321)

高士岗,李臣,辛德林,等.矿权重叠区煤-气协同开发走廊规划及数值模拟研究[J].煤炭工程,2024,56(10):165-171.