JAHKAI — Mine Planning & Consulting | تخطيط المناجم والاستشارات

Underground mine planning is where decisions are made that determine the economic outcome of the entire operation. The design of access development, the sequencing of stopes, the sizing of ventilation infrastructure, the selection of mining methods — these choices are made early and are expensive to change. They require deep operational experience, not just software proficiency.

تخطيط المناجم تحت الأرض هو حيث تُتخذ القرارات التي تحدد النتيجة الاقتصادية. Underground mine planning is where decisions are made that determine the economic outcome.

Jahkai provides independent mine planning and technical consulting built on decades of hands-on underground experience across multiple commodities and mining methods. Our team has planned, developed, and operated underground mines — we understand the gap between what looks efficient on a screen and what actually works at the face. That operational grounding is what makes our consulting different.

تقدم جاكاي تخطيط مناجم مستقل واستشارات فنية مبنية على عقود من الخبرة العملية. Jahkai provides independent mine planning and technical consulting.

"A mine plan that cannot be executed by the crew at the face is not a mine plan. It is a drawing."

"خطة منجم لا يمكن تنفيذها من قبل الطاقم عند الواجهة ليست خطة منجم." "A mine plan that cannot be executed by the crew at the face is not a mine plan."

What We Deliver

ما نقدمه What We Deliver

Technical Consulting Services

خدمات الاستشارات الفنية Technical Consulting Services

From conceptual design through to operational optimisation — independent technical advice across the full mine lifecycle.

من التصميم المفاهيمي إلى التحسين التشغيلي. From conceptual design through to operational optimisation.

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Underground Mine Design

تصميم المناجم تحت الأرض Underground Mine Design

Access design (decline, shaft, ramp), level layout, infrastructure placement, ore handling systems, and secondary egress planning. Mining method selection based on orebody geometry, geotechnical conditions, and economic analysis. Design that works on paper and underground.

تصميم الوصول وتخطيط المستويات ووضع البنية التحتية. Access design, level layout, infrastructure placement.

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Stope Design & Optimisation

تصميم الحجرات والتحسين Stope Design & Optimisation

Open stope design, cut-and-fill planning, sub-level stoping, longhole stoping, and room-and-pillar layouts. Stope geometry optimisation for maximum recovery with acceptable dilution. Pillar sizing, crown stability assessment, and backfill sequencing. Practical designs that account for real ground conditions.

تصميم الحجرات المفتوحة وتخطيط القطع والملء. Open stope design, cut-and-fill planning.

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Development Sequencing

تسلسل التطوير Development Sequencing

Logical sequencing of development headings to maintain production access, ventilation circuits, and emergency egress throughout the mine life. Critical path identification, development rate forecasting, and scheduling that accounts for the reality of underground construction — including the delays that inevitably occur.

تسلسل منطقي لواجهات التطوير للحفاظ على وصول الإنتاج. Logical sequencing of development headings to maintain production access.

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Production Scheduling

جدولة الإنتاج Production Scheduling

Short-range scheduling — weekly and monthly production plans aligned with development availability, equipment capacity, and workforce rostering. Long-range scheduling — life-of-mine production profiles, capital development sequencing, and economic modelling for investment decision support.

جدولة قصيرة وطويلة المدى متوافقة مع التطوير والإنتاج. Short-range and long-range scheduling aligned with development and production.

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Ventilation Design

تصميم التهوية Ventilation Design

Primary and auxiliary ventilation circuit design, fan selection and placement, duct sizing, airflow modelling, and contaminant management. Heat stress management — particularly critical for operations in high-ambient-temperature environments. Ventilation-on-demand systems for energy optimisation in large underground networks.

تصميم دوائر التهوية الأساسية والمساعدة واختيار المراوح. Primary and auxiliary ventilation circuit design, fan selection.

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Geotechnical Assessment

التقييم الجيوتقني Geotechnical Assessment

Rock mass characterisation, structural domain mapping, in-situ stress estimation, and support design recommendations. Empirical and numerical geotechnical analysis to support mine design decisions. Ground behaviour prediction for new mining areas based on geological and structural data.

توصيف الكتلة الصخرية ورسم خرائط المجالات الهيكلية. Rock mass characterisation, structural domain mapping.

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Feasibility Studies

دراسات الجدوى Feasibility Studies

Pre-feasibility and feasibility-level technical studies for new underground operations. Mining method assessment, capital and operating cost estimation, development scheduling, equipment fleet sizing, and risk identification. Studies designed to support investment decisions with credible, operationally grounded analysis.

دراسات فنية على مستوى ما قبل الجدوى والجدوى. Pre-feasibility and feasibility-level technical studies.

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Operational Reviews

المراجعات التشغيلية Operational Reviews

Independent assessment of existing underground operations — productivity analysis, cost benchmarking, bottleneck identification, and improvement recommendations. Review of mining methods, fleet utilisation, development rates, ground support practices, and safety systems. Actionable findings, not consultant padding.

تقييم مستقل للعمليات القائمة تحت الأرض. Independent assessment of existing underground operations.

Advisory

الاستشارات Advisory

Contractor Scope Definition & Tender Evaluation

تعريف نطاق المقاول وتقييم العطاءات Contractor Scope Definition & Tender Evaluation

For mine owners engaging mining contractors, the quality of the scope definition determines the quality of the tenders received — and the success of the contract. Jahkai provides independent advisory services that protect the owner's interests.

لملاك المناجم الذين يتعاقدون مع مقاولي التعدين. For mine owners engaging mining contractors.

Scope Definition

تعريف النطاق Scope Definition

Technical scope packages — clear definition of mining scope, performance expectations, equipment requirements, and reporting obligations

Schedule alignment — scope milestones tied to realistic development and production schedules

Risk allocation — appropriate allocation of geological, operational, and commercial risk between owner and contractor

KPI frameworks — measurable performance indicators that drive the right behaviours and outcomes

Tender Evaluation

تقييم العطاءات Tender Evaluation

Technical assessment — evaluation of contractor capability, methodology, equipment fleet, and personnel against scope requirements

Commercial analysis — rate comparison, cost build-up review, margin assessment, and lifecycle cost modelling

Risk assessment — identification of delivery risks in each tender, including equipment age, personnel availability, and subcontractor dependencies

Recommendation reports — clear, defensible recommendations supported by technical and commercial evidence

Gulf Relevance

الصلة بالخليج Gulf Relevance

Planning the Kingdom's Underground Future

تخطيط مستقبل المملكة تحت الأرض Planning the Kingdom's Underground Future

Saudi Arabia is transitioning from a surface-mining economy to one that increasingly operates underground. This transition requires specialist planning expertise that does not yet exist at scale within the Kingdom.

تنتقل السعودية من اقتصاد التعدين السطحي إلى اقتصاد يعمل تحت الأرض. Saudi Arabia is transitioning from a surface-mining economy to underground.

Surface-to-Underground Transition

الانتقال من السطح إلى تحت الأرض Surface-to-Underground Transition

Many of the Kingdom's mineral deposits — including major gold and base metal targets in the Arabian Shield — will transition from open-pit to underground mining as surface resources are depleted or as deeper deposits are brought into development. This transition is one of the most technically demanding phases in a mine's life. It requires careful planning of access development, ventilation infrastructure, ground support strategies, and equipment selection — all while maintaining production from the existing surface operation. Our team has managed this transition across multiple Australian operations.

العديد من الرواسب المعدنية في المملكة ستنتقل من التعدين المكشوف إلى تحت الأرض. Many of the Kingdom's mineral deposits will transition from open-pit to underground mining.

Ventilation in Extreme Climates

التهوية في المناخات القاسية Ventilation in Extreme Climates

Saudi Arabia's surface temperatures regularly exceed 45 degrees Celsius in summer. When this air is drawn underground, it creates heat stress conditions that demand sophisticated ventilation design — refrigeration plants, spot cooling, airflow management, and roster design that accounts for thermal exposure limits. Our ventilation designs for Gulf operations incorporate climate-specific modelling from the outset, not as an afterthought.

تتجاوز درجات الحرارة السطحية في السعودية ٤٥ درجة مئوية في الصيف. Saudi Arabia's surface temperatures regularly exceed 45 degrees Celsius in summer.

New Discoveries Need Feasibility Studies

الاكتشافات الجديدة تحتاج دراسات جدوى New Discoveries Need Feasibility Studies

The Arabian Shield's mineral potential is being systematically explored for the first time. Deposits in the Nabita and Ad-Duwayhi Gold Belt regions, along with base metal and rare earth targets, require feasibility-level technical studies to attract investment and advance toward development. Jahkai provides operationally grounded feasibility work — studies built on practical mining experience, not theoretical modelling alone. Our studies give investors confidence that the technical plan can actually be executed.

يتم استكشاف الإمكانات المعدنية للدرع العربي بشكل منهجي لأول مرة. The Arabian Shield's mineral potential is being systematically explored for the first time.

Knowledge Transfer

نقل المعرفة Knowledge Transfer

Building Planning Capability In-Kingdom

بناء قدرات التخطيط داخل المملكة Building Planning Capability In-Kingdom

Mine planning is a discipline that combines technical knowledge with operational judgement — it cannot be learned from software training alone. Our knowledge transfer approach for planning capability follows the same philosophy as our operational training.

تخطيط المناجم تخصص يجمع بين المعرفة الفنية والحكم التشغيلي. Mine planning is a discipline that combines technical knowledge with operational judgement.

Embedded mentoring — Jahkai planners work alongside national counterparts, progressively transferring decision-making responsibility as competency develops
Software and methodology training — technical training in industry-standard mine planning software, scheduling tools, and ventilation modelling platforms
Operational exposure — planning staff spend time underground to develop the practical understanding that makes mine plans realistic and executable
Review and calibration — regular comparison of planned versus actual performance, building the feedback loop that develops planning judgement over time
Independent capability — the goal is a local planning team that can design, schedule, and optimise underground operations without external support