-
Title
In-00Situ Rapid Measuring Technology and Application of Coal and Rock Strength
-
作者
马万祥陈治中汪占领
-
单位
神华宁夏煤业集团有限责任公司枣泉煤矿天地科技股份有限公司开采设计事业部
-
摘要
为获取煤岩体真实单轴抗压强度,介绍了煤岩体抗压强度井下原位测试方法,并应用此法对枣泉煤矿东、西翼采区进行了煤岩体强度现场实测。结果表明:枣泉煤矿二煤平均单轴抗压强度17 MPa以上。顶板粉砂岩和细砂岩的抗压强度为42~55 MPa;砂质泥岩和泥岩抗压强度24~34MPa;炭质泥岩抗压强度较低,为11~15 MPa。基于井下煤岩体抗压强度实测数据应用于巷道支护设计,更符合井下实际情况,设计的合理性与可靠性显著提高,巷道支护状况得到明显改善。
-
Abstract
In order to have the real uniaxial compressive strength of the coal and rock mass, the paper introduced the in-situ measuring and test method of the coal
and rock compressive strength and the method was applied to the site measurements of the coal and rock strength in the mining blocks of the east and west wings in Z
aoquan Mine.The results showed that the average uniaxial compressive strength in No.2 seam of Zaoquan Mine was over 17 MPa and the compressive strength of the
powder sandy stone and fine sandy stone in the roof was 4255 MPa.The compressive strength of the sandy mudstone and the mudstone was 2434 MPa. The compressiv
e strength of the carbonaceous mudstone was lower and was 1115 MPa.Due to the site measured data of the compressive strength of the coal and rock mass in the und
erground mine applied to the design of the mine roadway support could meet the actual condition of the underground mine, the rationality and the relibility of the desig
n could be obviously improved and the support status of the mine roadway could be obviously improved
-
关键词
煤岩单轴强度原位测试钻孔触探法巷道支护
-
KeyWords
uniaxial strength of coal and rock;in-situ measurement;borehole contact detection method;gateway support;
-
相关文章