Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preventing and controlling wall burst of head-on coal body of rock burst roadway
The invention relates to the technical field of roadway construction methods, in particular to a rock burst roadway head-on coal explosion prevention and control method which comprises the following steps: performing ground stress test on a field roadway head-on; the method comprises the following steps: collecting a coal sample of a laneway side coal body at the head-on of a laneway, preparing into a sample, performing stress loading on the sample, and determining a reasonable drilling diameter; a plurality of obtained samples are taken to be subjected to a drilling grouting test; advanced drilling construction is carried out on the on-site roadway head-on, so that an advanced drill hole is formed in the roadway side coal body, water jet is carried out on the advanced drill hole, and a jet hole is formed in the roadway side coal body; and the formed jet holes are subjected to grouting modification. According to the method, the problems of wall explosion, wall caving, deformation and the like of the roadway side coal body in the roadway tunneling process are effectively controlled, the problem of poor forming of the roadway side coal body is solved, the impact tendency of the coal body is reduced, and the integrity and strength of the roadway side coal body are improved.
本发明涉及巷道施工方法技术领域，尤其涉及一种冲击地压巷道迎头煤体炸帮防控方法，防控方法包括以下步骤：对现场巷道迎头进行地应力测试；采集巷道迎头的巷帮煤体的煤样并制成试样，对试样进行应力加载，确定合理的钻孔直径；取多个所获得的试样进行钻孔注浆试验；对现场巷道迎头进行超前钻孔施工，以在巷帮煤体上形成有超前钻孔，对超前钻孔进行水射流，以在巷帮煤体中形成射流孔洞；对所形成射流孔洞进行注浆改性。本发明有效控制巷道掘进过程中巷帮煤体炸帮、片帮及变形等问题，改善巷帮煤体成型差的难题，降低了煤体冲击倾向性，提高了巷帮煤体的完整性和强度。
Method for preventing and controlling wall burst of head-on coal body of rock burst roadway
The invention relates to the technical field of roadway construction methods, in particular to a rock burst roadway head-on coal explosion prevention and control method which comprises the following steps: performing ground stress test on a field roadway head-on; the method comprises the following steps: collecting a coal sample of a laneway side coal body at the head-on of a laneway, preparing into a sample, performing stress loading on the sample, and determining a reasonable drilling diameter; a plurality of obtained samples are taken to be subjected to a drilling grouting test; advanced drilling construction is carried out on the on-site roadway head-on, so that an advanced drill hole is formed in the roadway side coal body, water jet is carried out on the advanced drill hole, and a jet hole is formed in the roadway side coal body; and the formed jet holes are subjected to grouting modification. According to the method, the problems of wall explosion, wall caving, deformation and the like of the roadway side coal body in the roadway tunneling process are effectively controlled, the problem of poor forming of the roadway side coal body is solved, the impact tendency of the coal body is reduced, and the integrity and strength of the roadway side coal body are improved.
本发明涉及巷道施工方法技术领域，尤其涉及一种冲击地压巷道迎头煤体炸帮防控方法，防控方法包括以下步骤：对现场巷道迎头进行地应力测试；采集巷道迎头的巷帮煤体的煤样并制成试样，对试样进行应力加载，确定合理的钻孔直径；取多个所获得的试样进行钻孔注浆试验；对现场巷道迎头进行超前钻孔施工，以在巷帮煤体上形成有超前钻孔，对超前钻孔进行水射流，以在巷帮煤体中形成射流孔洞；对所形成射流孔洞进行注浆改性。本发明有效控制巷道掘进过程中巷帮煤体炸帮、片帮及变形等问题，改善巷帮煤体成型差的难题，降低了煤体冲击倾向性，提高了巷帮煤体的完整性和强度。
Method for preventing and controlling wall burst of head-on coal body of rock burst roadway
冲击地压巷道迎头煤体炸帮防控方法
FU YUKAI (Autor:in) / WU YONGZHENG (Autor:in) / REN SHUO (Autor:in) / YANG JIANWEI (Autor:in) / FENG YOULIANG (Autor:in)
01.08.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E21D
SHAFTS
,
Schächte
/
E02D
FOUNDATIONS
,
Gründungen
/
E21B
EARTH OR ROCK DRILLING
,
Erd- oder Gesteinsbohren
/
G01N
Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften
,
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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