A method for controlling safe mining at the boundary of slopes in landslide risk areas

By dividing the slope into landslide risk zones and non-landslide risk zones, and adopting a dual support control approach of localized transverse mining and replacement with localized lateral support, combined with longitudinal and transverse mining methods, the problem of lagging landslide risk zone management was solved, achieving safe slope boundary and efficient resource recovery.

CN120867754BActive Publication Date: 2026-05-26LIAO NING GONG CHENG JI SHU DA XUE E ER DUO SI YAN JIU YUAN
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LIAO NING GONG CHENG JI SHU DA XUE E ER DUO SI YAN JIU YUAN
Filing Date
2025-09-01
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing technologies have failed to effectively address the issues of slope management and boundary demarcation in landslide-prone areas, resulting in delayed landslide risk zone management, the covering of large amounts of resources, and impacts the safety and resource recovery efficiency of open-pit mines.

Method used

By dividing the slope into landslide risk zone P1 and non-landslide risk zone P2, a dual support control system of local lateral mining and replacement and local lateral lining is adopted. Combined with longitudinal and lateral mining methods, the slope morphology is designed, and the Morgenstern method is used to determine whether the stability coefficient meets the safety reserve coefficient, thereby determining the slope morphology and parameters at each stage.

Benefits of technology

Effective management of landslide risk areas has been achieved, ensuring the safety of slopes to the boundary, avoiding delays in landslide risk area management, and improving the safety and resource recovery efficiency of open-pit coal mines.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application proposes a method for controlling the safe boundary of open-pit coal mines in areas with landslide risk. It belongs to the field of open-pit mining technology. First, localized transverse mining and backfilling, along with localized slope reinforcement, are simultaneously carried out on both sides of the landslide risk area. Then, alternating longitudinal and transverse mining methods are used in both the landslide risk and non-landslide risk areas. Based on the slope stability coefficient at each stage, construction parameters are determined for each stage. A finite element analysis model is established based on these parameters to determine the tracking distance for transverse mining and backfilling. Finally, a plan view of the engineering location at each stage is drawn to guide open-pit coal mine mining. This method considers how to treat localized landslide risk areas and how to achieve boundary protection after treatment, avoiding the problem of delayed landslide risk area treatment and providing effective technical support for subsequent landslide risk area treatment and mining in open-pit coal mines.
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