层次注浆工艺在松软巷道破碎围岩加固中的应用

发布时间：2018-11-15 15:12

【摘要】：煤层回采过程中,受支撑应力的作用工作面前方煤岩体被破坏,注浆技术是控制煤岩体破坏的有效途径,而注浆工艺对于注浆效果的优劣具有重要意义。以山西某矿为试验矿井,采用层次注浆工艺和传统注浆工艺对其巷道破碎围岩进行加固,并对注浆效果进行对比分析。数据表明:层次注浆工艺注浆速度较传统注浆工艺快了40%;层次注浆工艺段巷道变形量明显小于传统注浆工艺段;层次注浆工艺能使浆液在煤岩体裂隙内得到有效充填,完整性有较大提高;层次注浆工艺煤壁有较小部分落下,但不影响采煤机正常回采,而传统注浆工艺煤壁比较破碎,完整性差;层次注浆工艺整体优于传统注浆工艺。
[Abstract]:In the process of coal seam mining, the effect of supporting stress on coal and rock mass in front of coal face is destroyed. Grouting technology is an effective way to control coal and rock mass damage, and grouting technology is of great significance to the quality of grouting effect. Taking a certain mine in Shanxi as an experimental mine, the broken surrounding rock of roadway is strengthened with hierarchical grouting technology and traditional grouting technology, and the grouting effect is compared and analyzed. The data show that the grouting speed of the hierarchical grouting process is 40% faster than that of the traditional grouting process, and the roadway deformation of the hierarchical grouting process section is obviously smaller than that of the traditional grouting process section. The hierarchical grouting technology can make the slurry fill effectively in the fracture of coal and rock mass, and the integrality is greatly improved. A small part of the coal wall falls down in the hierarchical grouting process, but it does not affect the normal mining of the shearer, while the traditional grouting process is relatively broken, the integrity of the coal wall is poor, and the hierarchical grouting process is better than the traditional grouting process as a whole.
【作者单位】：西南石油大学油气藏地质及开发工程国家重点实验室;西南石油大学地球科学与技术学院;河南理工大学能源科学与工程学院;煤炭安全生产河南省协同创新中心;
【基金】：国家自然科学基金面上基金(50102456);国家自然科学基金青年科学基金(50804013)
【分类号】：TD265.4

【相似文献】