黄河北煤田岩浆岩侵入区内矿井地温分布规律研究—以潘店井田为例

Study on Distribution Law of Mines in Magmatic Rocks Erosion Area in Huanghebei Coalfield— Taking Pandian Coalfied as an Example

摘要:

通常情况下，地温会随深度增加而呈线性增加，地温影响着井下采掘工作面的环境温度。随着矿井深度的变化，空气所受到的压力状态也随之发生改变。当风流沿井巷向下流动时，空气的压力值增大。空气的压缩会出现放热（或吸热），从而使矿井温度升高。随着矿井向深部开采，井下作业环境条件恶化，岩层温度将达到摄氏几十度的高温。新汶孙村煤矿800m水平部分工作面温度高达30～33℃，巨野矿区龙固矿井850m水平所有工作面温度高达34～36℃，已严重影响了工人劳动效率。黄河北煤田潘店井田东部有燕山期岩浆岩活动，含煤地层的上中下部均有岩浆岩侵入，针对岩浆岩侵蚀地区采用钻孔简易测温和近似稳态测温等手段，详细查明地温分布规律，通过区内地温资料对比发现，该区有岩浆岩侵蚀影响的地段比没有岩浆岩侵蚀的地段地温高2.6～7.2℃。

Abstract:

Typically, ground temperature will increase linearly with the increase of depth, and ground temperature affects the underground mining working face in ambient temperature. Accompanying with the change of the depth of the mine, the stress state will change. When the dissolute flows down the shaft, the air pressure value will increase. Compressed air will be exothermic or endothermic, and cause the increase of mine temperature. Accompanying with the mining to the deep of coal mine, underground work environment will deteriorate, and strata temperature will reach a high temperature as tens of degrees centigrade. The temperature of the working surface at the depth of 800m in Suncun coal mine in Xinwen is 30~33 ℃, and all working temperature at the depth of 850m in Longgu coal well in Juye mining area is 34～36 ℃. It has seriously affected the labor efficiency of workers. There are Yanshanian magmatic activity in eastern Pandian coal well in Huang hebei coalfield, and magma intruded in the upper, middle and lower parts of coalbearing strata. In view of the magmatic rock erosion region, by using simple drilling test and approximate method of steady state temperature, distribution law of ground temperature has been identified in detail. Through comparision of ground temperature data in this area, it is found that the temperature in magma erosion area is higher as 2.6～7.2 ℃ than that in no magma erosion area.