Vol. 44 No. 4 Aug,2017
矿业安全与环保
MINING SAFETY & ENVIRONMENTAL PROTECTION
孙四清.煤油气共存矿井据进工作面底板油型气涌出机理探讨[J].矿业安全与环保，2017,44(4）：90-94.
文章编号：10084495(2017)04009005 问题探讨
第44卷第4期 2017年8月
煤油气共存矿井掘进工作面底板油型气涌出机理探讨
孙四清
（中煤科工集团西安研究院有限公司，陕西西安710054）
摘要：针对煤油气共存矿井工作面掘进过程中底板油型气涌出问题，采用现场跟踪观测、数值模拟
和理论分析的方法，研究握进工作面底板油型气涌出机理。现场观测结果表明，掘进工作面底板油型气涌出主要受到油型气储集层分布、巷道开挖、底鼓裂隙等因素的影响。数值模拟结果表明，巷道开挖引起地层应力、应变发生变化，导致底板岩层变形破坏，产生裂隙。综合研究分析认为，掘进工作面底板油型气涌出是油型气储集层分布、巷道开挖扰动、地应力和油型气压力等因素综合作用的结果，其中油型气储集层分布是物质前提，巷道开挖扰动是诱导因素，地应力创造了运移通道，油型气压力是动力因素。
关键词：煤油气共存矿井；掘进工作面；油型气；扰动效应；涌出机理
中图分类号：TD712
文献标志码：A
网络出版时间：2017-08-0314：45
网络出版地址:http://kns.cnki.net/kcms/detail/50.1062.TD.20170803.1445.040.html
Discussion on Oil-type Gas Emission Mechanism from Heading Face Floor
in Coal-oil-gas Coexisting Mine
SUN Siqing
( China Goal Technology and Engineering Group Xi' an Research Institute , Xi' an 710054, China)
Abstract : Aiming at the problem of the oiltype gas emission from the heading face floor in the coaloilgas coexisting mine, the oiltype gas emission mechanism from the heading face floor was discussed in this paper through the field followup observation, numerical simulation and theoretical analysis. The field observation results showed that the oiltype gas emission
from the heading face floor was mainly affected by the
r distribution of oiltype gas, the roadway excavation and the floor
heave fractures. The numerical simulation results show
redthatthe
strain, which then caused the deformatior
id dat
comprehensive analysis that the oiltype gas en
oiltype gas, the roadway excavation disturbance, the s
excavation led to the change of the strata stress and
eration of fractures. It was concluded from the
nd the gene
the heading face floor was resulted from the reservoir distribution of
the oiltype gas pressu
and so on, of which the reservoir
distribution of the oiltype gas was the material precondition, the roadway excavation was the induction factor, the strata stress created the gas migration channels , and the oiltype gas pressure provided the power.
Keywords : coaloilgas coexisting mine; heading face; oiltype gas; disturbance effect ; emission mechanisn
黄陵矿区位于鄂尔多斯盆地南缘，在侏罗系延安组中含有丰富的煤炭资源，而其下部的三叠系延长组富含油气资源，整个矿区形成了煤、油气资源共
收稿日期：2017-0225;201704-10修订
基金项目：国家科技重大专项（2016ZX05045-002-002）作者简介：孙四清（1977一），男，河南新县人，博士研究
生，副研究员，从事煤矿地质及煤矿瓦斯防治方面的研究工作。Email ; sunsiqing@ cctegxian, com。
· 90 万方数据
存[1-2]、共采的局面。在漫长的地质演化过程中，延长组深部油气在构造运动作用下向上运移，部分油气在煤层顶底板砂岩层中保存下来。对于煤层底板油气成因类型的研究已确定其属于油型气[3]。
煤层开采过程中这部分油气在采动扰动的作用下涌向采掘空间，对煤矿的安全生产构成了严重威胁。黄陵矿区煤矿生产过程中多次出现底板油型气异常涌出现象[4-6】，大量气体瞬间从巷道底板涌出