Support method and support structure for soft coal/ rock stratum alley

A technology for roadway support and rock formation, which is used in earth-moving drilling, mining equipment, installation of bolts, etc. Tightening force reduction, enhanced reliability, reduced effect of soft coal/rock roadway deformation

A technology for roadway support and rock formation, which is used in earth-moving drilling, mining equipment, installation of bolts, etc. Tightening force reduction, enhanced reliability, reduced effect of soft coal/rock roadway deformation

CN103174444AActive Publication Date: 2013-06-26CHINA UNIV OF MINING & TECH (BEIJING)
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  • Support method and support structure for soft coal/ rock stratum alley
  • Support method and support structure for soft coal/ rock stratum alley
  • Support method and support structure for soft coal/ rock stratum alley

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Embodiment Construction

[0029] A soft coal / rock layer roadway support method and support structure according to the embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] see image 3 As shown, the embodiment of the present invention provides a kind of soft coal / rock formation roadway support method, comprising steps:

[0032] S11, drilling on the roadside of soft coal / rock formation roadway;

[0033] S12. Grouting the bottom of the drilled hole to form a grout reinforcement group;

[0034] S13. Install an anchor cable in the borehole, and anchor the cable body end of the anchor cable on the g...

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Abstract

The invention discloses a support method and a support structure for a soft coal / rock stratum alley and relates to the technical field of coal stratum alley support. The support method and the support structure for the soft coal / rock stratum alley aim at solving the problem that the soft coal / rock stratum alley is easy to deform. The support method for the soft coal / rock stratum alley comprises the steps: holes are drilled in edges of the soft coal / rock stratum alley; grout is directionally controlled at the bottom of each drilled hole so that grout reinforcing groups are formed; and an anchor cable is arranged in each drilled hole and a cable body end portion of each anchor cable is anchored on each grout reinforcing group. According to the support structure for the soft coal / rock stratum alley, the cable body end portion of each anchor cable is anchored on each grout reinforcing group. The support method and the support structure are suitable for alley support and particularly suitable for the alley support of soft coal / rock strata.

Description

technical field [0001] The invention relates to the technical field of coal / rock layer roadway support, in particular to a soft coal / rock layer roadway support method and a support structure. Background technique [0002] Coal mine roadway support technology is a key technology in mine construction and coal mining. Safe, reasonable and effective roadway support is a necessary condition to ensure high mine production and high efficiency. The bolt support method has many characteristics such as good support effect, high efficiency, and low cost. It has been widely used in coal mining enterprises in my country, and has brought huge technical and economic benefits to the enterprise. The bolt support has become a roadway support. main technical means. [0003] Compared with the anchor rod, the anchor cable has the characteristics of large depth, high strength and large pre-tightening force. The anchor cable should closely follow the excavation face and provide timely support. f...

Claims

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Application Information

Patent Timeline
26 Jun 2013
Publication
CN103174444A
IPC
E21D20/02
Inventors
杨仁树; ιƒ­δΈœζ˜Ž