Support-System-design-In-Coal-Mine-Galleries-and-Junctions

A computational tool designed to assist engineers in determining optimal rock support parameters for underground coal mine galleries and junctions. This project presents a semi-empirical, computation-aided approach to design roof-bolt support using rock mass classification (RMR/Q) with simplified CMRI–ISM style rock-load relations.

Features

• Support Design Calculator: Calculate rock load, effective support capacity, and recommended spacing based on RMR classification and bolt parameters
• Grid Spacing Check: Optionally enter a proposed bolt grid spacing and verify if it is adequate against computed maximum spacing
• Dark Mode Support: Toggle between light and dark themes
• Responsive Design: Works seamlessly on desktop, tablet, and mobile devices
• Clean Modern UI: Professional, minimal design with smooth animations

Tech Stack

• HTML5
• CSS3 (with CSS Variables for theming)
• JavaScript (Vanilla JS, no frameworks)
• Git & GitHub

Project Structure

├── index.html          # Home page with calculator
├── about.html          # Detailed project information
├── team.html           # Team members page
├── style.css           # Shared stylesheet with dark mode support
├── script.js           # Calculator logic and interactions
├── config.js           # Application configuration
├── package.json        # Node.js dependencies and scripts
├── vercel.json         # Vercel deployment configuration
├── netlify.toml        # Netlify deployment configuration
├── build.js            # Build script
├── .gitignore          # Git ignore rules
├── DEPLOYMENT.md       # Deployment guide
└── README.md           # Project documentation

Deployment

This project can be deployed to multiple platforms:

GitHub Pages

• Automatically deploys via GitHub Actions on push to main branch
• See .github/workflows/deploy.yml for configuration

Vercel

npm run deploy:vercel

Netlify

npm run deploy:netlify

For detailed deployment instructions, see DEPLOYMENT.md.

Development

Local Development Server

# Install dependencies
npm install

# Start development server
npm run dev
# Server will start on http://localhost:3000

Build

npm run build

Configuration

• Framework Preset: Static Site (No framework)
• Build Command: npm run build (validates files)
• Output Directory: . (current directory)
• Environment Variables: See _env.example and config.js

Usage

1. Open index.html in a web browser
2. Enter the required parameters:
   • RMR (0-100)
   • Roof Thickness t (m)
   • Bolt Capacity Cb (kN)
   • Factor of Safety (FoS)
   • Bolt efficiency ηb
   • Plate efficiency ηp
   • Proposed grid spacing Sg (optional)
   • Location (Gallery/Junction)
3. Click "Check" to calculate results
4. View the calculated rock load, effective capacity, spacing, support density, and optional grid adequacy check

Calculation Formulas

• Rock Load: RL = 0.1 × (100 − RMR) × t (t/m²)
• Effective Capacity (kN): C_eff(kN) = C_b × η_b × η_p
• Effective Capacity (t): C_eff(t) = C_eff(kN) / 9.80665
• Spacing: S = √(C_eff(t) / (RL × FoS × J_f))
• Support Density: C_eff(t) / S²
• Achieved FoS at Proposed Grid: C_eff(t) / (RL × Jf × Sg²)

Team Members

• Sumit Chaturvedi – 221MN052
• Aditya Anshul – 221MN004
• Sushma – 221MN054

License

This project is part of a Major Project assignment.

References

• Paul et al., 2012 — Validation of RMR-based support design, Monnet Ispat (Raigarh), case study
• Bieniawski, 1989 — Engineering Rock Mass Classifications
• Barton, 2002 — Q-value correlations and tunnel design
• CMRI/DGMS guidance for Indian coal measures