A Health Diagnosis Method for Surrounding Rock of Roadway Supported by Bolt
A technology of bolt support and diagnosis method, which is applied in earth-moving drilling, mining equipment, mining equipment, etc., can solve problems such as manpower, material resource consumption, stability judgment of roadway surrounding rock, and increase in production cost, and achieves a high degree of automation. , low cost, clear effect
Active Publication Date: 2016-06-08
HUNAN UNIV OF SCI & TECH
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Problems solved by technology
However, due to the many factors affecting the stability of the surrounding rock of the bolted roadway, the above-mentioned main methods for diagnosing the instability of the bolted roadway cannot organically combine the deformation of the surrounding rock with the working state of the bolt. To comprehensively and effectively judge the stability of the roadway surrounding rock; and to carry out large-scale long-term monitoring of the bolt support roadway will often cause a large amount of manpower and material resources for coal mining enterprises, resulting in a sharp increase in production costs
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[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0025] A method for diagnosing the health of the surrounding rock of a roadway supported by bolts, comprising the following steps:
[0026] 1) Select the monitoring area of the bolted roadway: According to the stability of the surrounding rock of the bolted roadway and the geological conditions of the surrounding rock of the roadway, the roadway to be monitored is divided into areas, and the weak stage of the roadway support and the relatively unstable area of the surrounding rock are selected. as a monitoring area.
[0027] 2) Select the monitoring anchor rod and monitoring anchor cable: if figure 1 , 2 As shown, along the longitudinal direction of the bolted roadway in the monitoring area, two rows of bolts in the middle of the roof of the bolted roadway are selected as roof monitoring bolt 1 and roof monitoring bolt 2; A row of anchors in the middle of the ...
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The invention provides a health diagnosis method for anchor bolt support roadway surrounding rock. The method comprises the following steps: (1) selecting an anchor bolt support roadway monitoring region; (2) selecting a monitoring anchor rod and a monitoring anchor cable; (3) setting a displacement monitoring point; (4) connecting equipment; (5) acquiring anchoring parameters of the anchor rod or the anchor cable; (6) acquiring surrounding rock surface displacement data; (7) performing health diagnosis on the anchor bolt support roadway surrounding rock. The method is easy to implement, is low in cost, is high in automatic degree, belongs to non-destructive monitoring, and is not interfered with the original support strength and surrounding rock stability of an anchor rod support roadway. By adopting the method, the anchor bolt support roadway can be monitored in real time, mining workers can fully grasp the instant stability state of the anchor rod support roadway surrounding rock by means of real-time monitoring of the anchor bolt support roadway, and the maintenance of the anchor bolt support roadway is facilitated.
Description
technical field [0001] The invention belongs to the technical field of bolt support, and in particular relates to a method for diagnosing the health of the surrounding rock of a roadway supported by bolts. Background technique [0002] The factors affecting the stability of the surrounding rock of the bolted roadway mainly include rock mass strength, rock mass structural surface characteristics, joint fissure development degree, groundwater, original rock stress, tectonic stress, mining influence and adjacent engineering disturbance. Rock mass strength, rock mass structural surface characteristics, joint fissure development degree, groundwater and construction methods affect the anchorage ultimate bearing capacity of the anchor bolt; original rock stress, structural stress, mining support pressure and adjacent engineering disturbance directly affect the anchor bolt working load play. Field engineering practice shows that some roadways often cause large deformation or even d...
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IPC IPC(8): E21F17/00E21F17/18
CPCE21F17/00E21F17/18
Inventor 李青锋周泽朱川曲
Owner HUNAN UNIV OF SCI & TECH