煤油气共生矿井底板油型气赋存特征及防治

为了提高煤油气共生矿井油型气灾害治理的科学性，以黄陵二矿为例，采用现场测试、钻探取芯、跟踪观测、地质分析等多种方法，研究了采掘工作面煤层底板油型气分布特征、涌出规律和运移机理，并初步探讨了底板油型气体灾害防治措施。结果表明:底板油型气涌出点多位于底板砂岩储层上倾尖灭端和砂岩透镜体附近，呈现不连续区带状分布特征，涌出的油型气主要来自富县组砂岩层，涌出的动力主要为地层流体压力差，底板油型气通过地层中存在大量的断裂和裂缝、微裂缝系统进入采掘空间，采掘扰动是底板油型气异常涌出的工程诱导因素。建议加强油型气综合探查技术、油型气灾害预测预报技术、油型气综合抽采技术和智能化矿井建设等方面的研究。

Occurrence characteristics and prevention of oil-type gas in coal-gas symbiosis mine floor

In order to improve the scientific nature of the treatment of oil-type gas disasters in coal-gas-gas symbiosis mines，it was took Huangling No.2 Mine as an example，various methods such as field testing，drilling and coring，tracking observation and geological analysis were used to study the coal seam floor oil type gas distribution characteristics，gushing regularity and migration mechanism，and preliminarily discussed the prevention and control measures of floor oil-type gas disasters.The results showed that the gushing point of floor oil-type gas was mostly located near the upper dip pinch end of the floor sandstone reservoir and the sandstone lens，presenting a discontinuous zone distribution.The gushing oil-type gas mainly came from the sandstone layer of the Fuxian Formation.The driving force of the gushing was mainly the pressure difference of the formation fluid.Floor oil-type gas enters the mining space through a large number of fractures，cracks，and micro-fracture systems in the formation.The excavation disturbance was the engineering inducement factor for the abnormal gushing of floor oil-type gas.It was recommended to strengthen research on oil-type gas comprehensive exploration technology，oil-type gas disaster prediction and prediction technology，oil-type gas comprehensive extraction technology and intelligent mine construction.