Zonal cooperative control method for gob-side entry retention
A technology of collaborative control and gob-entry retention, which is applied in the field of cooperative control of gob-side gob-retaining partitions, safe and efficient construction of gob-side entry retention in mine underground engineering, and can solve improper support, inability to real-time partition of roadway roof surrounding rock, Real-time and quantitative evaluation of the support effect of the surrounding rock on the roof cannot be achieved, and the effect of safe and efficient construction can be achieved
Active Publication Date: 2021-02-12
王琦
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Problems solved by technology
[0004] (1) It is impossible to accurately and real-time partition the surrounding rock of the roadway roof, and the surrounding rock support design and advance support design of the roadway roof lack quantitative basis, which is prone to improper support, causing serious safety hazards such as large deformation of the roadway, roof fall, and landslides ACCIDENT
[0005] (2) Real-time and quantitative evaluation of the surrounding rock support effect of the roadway roof after anchoring and grouting cannot be carried out, and the anchoring and grouting parameters and advanced support parameters cannot be optimized in time, which consumes a lot of manpower and material resources
[0006] To sum up, at present, there is still a lack of effective solutions for the accurate and real-time partitioning of the surrounding rock of the roadway roof and the real-time and quantitative evaluation of the supporting effect of the surrounding rock of the roadway roof after anchoring and grouting
Method used
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[0047] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
[0048] It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.
[0049]One or more embodiments provide a collaborative control method for gob-side entry retaining partitions. In this method, t...
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The invention discloses a cooperative control method for gob-side entry retaining partitions. Firstly, drilling is taken as the core, and the surrounding rock of the roadway roof is comprehensively partitioned in combination with geological conditions; Anchoring parameters; use high-strength grouting anchor rods, high-strength grouting anchor cables, and quantitative yielding devices to perform anchoring and grouting support for the surrounding rock of the roadway roof; evaluate the effect of anchoring and grouting on the surrounding rock of the roadway roof, and optimize the roof advance according to the evaluation results Pre-split parameters and anchor injection parameters, combined with numerical simulation to determine the design parameters of advance support; carry out advance pre-split on the roof of the roadway, and erect support pillars. The partition cooperative control method of gob-side entry retention proposed by the present invention can accurately determine the parameters of anchor grouting, roof pre-cracking parameters and advance support parameters, and can quantitatively evaluate the effect of anchor grouting and support, which is the key for coal mine gob-side entry retention and its parameters. Design provides effective methods and means.
Description
technical field [0001] The disclosure belongs to the technical field of safety in mine underground engineering, and specifically relates to a gob-side entry retaining partition cooperative control method for designing gob-side entry retention parameters and efficiently supporting the surrounding rock of the roadway roof during the excavation process of the gob-side entry roadway. It is suitable for safe and efficient construction of gob-side entry retention in mine underground engineering. Background technique [0002] Gobside retaining is a mining roadway layout and control technology that preserves the mining roadway of the working face along the edge of the gob to realize the recovery function of the lower section. The coal pillars are canceled along the gob-side entry, realizing continuous mining without coal pillars, reducing the roadway excavation rate, alleviating the contradiction of excavation replacement, optimizing the development and mining layout, eliminating th...
Claims
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IPC IPC(8): E21D20/00E21D20/02E21B49/00
Inventor 王琦
Owner 王琦