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Author:Vaaramaa, Olli
Title:Mallipohjaisen louhintaprosessin hyödyntäminen tiehankkeessa
Benefits of a model-based rock excavation process in road-construction projects
Publication type:Master's thesis
Publication year:2013
Pages:[11] + 64      Language:   fin
Department/School:Rakennustekniikan laitos
Main subject:Kalliorakentaminen   (Rak-32)
Supervisor:Rinne, Mikael
Instructor:Jaakkola, Mika
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark Aalto     | Archive
Keywords:3D-machine control
rock excavation process
open-pit excavation
model-based
3D-koneohjaus
louhintaprosessi
avolouhinta
mallipohjainen
Abstract (eng): Destia Oy has been developing a model-based rock excavation process since 2008.
By development work, the company is seeking, for example, better financial profits and better methods of making quality assurance reports.
The purpose of this thesis is to find out what benefits have been achieved and what can be achieved.

3D-Machine control system, which is integrated to the drilling rig, is a multidisciplinary entity.
The current system in use is exploiting GNSS-positioning with a variety of methods to delineate it for the positioning of the machine.
It also uses a variety of sensors for exact positioning of the tool.
The user interface of the system is located in the cabin.
From there you can handle drill plans and surface models.
Usually drill plans are created beforehand at the office but in some cases they can be created with the 3D-system in the cabin.

Examination of achieved benefits happened at Tikkurilantie's rock excavation project.
Research on site was performed in order to clarify the benefits of the system in various fields of the project.
In this thesis the system's influence on effectiveness of drilling, the usage of the system's output data for rock mass calculations, the possibilities of optimizing blasting fields, the reliability of data acquisition system and the system's financial impact on the project are examined.

During the research, it was noticed that drilling was far more efficient than it was calculated.
The system's output data in rock mass calculations were examined by comparing various rock surface models constructed by different methods.
Results point out that output data are not suitable for rock mass calculations in their own right, but are an excellent tool for checking and completing mappings.
The system which collects and stores performance times and quantities turned out to be unreliable.
It was also found out that in model-based rock excavation methods; there is an opportunity to lower the project's costs by optimizing blasting fields.
The influence on the project's finance was also examined.
Research points out that about 10 % of the realized contract value was actualized due the model-based rock excavation system.
Abstract (fin): Mallipohjaista louhintaprosessia on kehitetty Destia Oy:ssä vuodesta 2008.
Mallipohjaisella louhintaprosessilla pyritään muun muassa taloudellisiin etuihin ja raportoinnin parantumiseen.
Tämän diplomityön tarkoituksena oli selvittää millaisia hyötyjä on saavutettu ja mitä sillä on savutettavissa.

Poravaunuun integroitu 3D-ohjausjärjestelmä on monialainen kokonaisuus.
Käytössä oleva järjestelmä hyödyntää GNSS-paikannusta ja erilaisia menetelmiä sen tarkentamiseen, sekä anturointia työkoneen työkalun paikantamisessa.
Hytissä olevan käyttöliittymän kautta hallitaan poraussuunnitelmia ja tavoitepintamalleja.
Mallien laatiminen tapahtuu pääsääntöisesti toimistolla, mutta joissakin tapauksissa se on mahdollista myös poravaunun hytistä käsin.

Saavutettujen hyötyjen tutkimista varten tutkimuskohteeksi valikoitui Tikkurilantien työmaan louhintatyöt.
Kohteessa pyrittiin selvittämään mallipohjaisen louhintatyön etuja projektin monella eri osa-alueella.
Tässä diplomityössä tutkitaan järjestelmän vaikutusta poraustehoihin, järjestelmän tallentaman toteumatiedon hyödyntämismahdollisuuksia massojen laskennassa, järjestelmän ansiosta syntyviä räjäytyskentän optimointimahdollisuuksia, tiedonkeruujärjestelmän luotettavuutta ja kokonaistaloudellisia vaikutuksia projektille.

Tutkimuksen aikana havaittiin, että poraustehot olivat urakkalaskentaan nähden huomattavasti suuremmat.
Toteumatietoja verrattiin erilailla rakennettuihin pintamalleihin ja tulokset osoittavat, että sellaisenaan poravaunun tallentama toteumatieto soveltuu huonosti massojen laskentaan, mutta ne ovat mainio työkalu kartoitusten tarkistamiseen ja täydentämiseen.
Suoriteaikoja ja määriä tallentava järjestelmä paljastui tutkimuksen aikana epäluotettavaksi.
Tuloksena saatiin myös, että mallipohjaisella louhinnalla on mahdollista optimoida räjäytyskenttiä, mistä seuraa kustannussäästöpotentiaalia.
Projektin kokonaistalouteen järjestelmä vaikutti niin, että noin 10 % toteutuneesta urakkasummasta voidaan katsoa syntyneen mallipohjaisen louhintamenetelmän ansiosta.
ED:2013-06-14
INSSI record number: 46877
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